Merge llvm-project release/18.x llvmorg-18.1.3-0-gc13b7485b879

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvm-project release/18.x llvmorg-18.1.3-0-gc13b7485b879.

PR:		276104
MFC after:	1 month

107 files changed, 1266 insertions, 431 deletions

diff --git a/contrib/llvm-project/clang/include/clang/AST/DeclBase.h b/contrib/llvm-project/clang/include/clang/AST/DeclBase.h
index 9a4736019d1b..eb7a1a320600 100644
--- a/contrib/llvm-project/clang/include/clang/AST/DeclBase.h
+++ b/contrib/llvm-project/clang/include/clang/AST/DeclBase.h
@@ -673,6 +673,16 @@ public:
   /// fragment. See [module.global.frag]p3,4 for details.
   bool isDiscardedInGlobalModuleFragment() const { return false; }
 
+  /// Check if we should skip checking ODRHash for declaration \param D.
+  ///
+  /// The existing ODRHash mechanism seems to be not stable enough and
+  /// the false positive ODR violation reports are annoying and we rarely see
+  /// true ODR violation reports. Also we learned that MSVC disabled ODR checks
+  /// for declarations in GMF. So we try to disable ODR checks in the GMF to
+  /// get better user experiences before we make the ODR violation checks stable
+  /// enough.
+  bool shouldSkipCheckingODR() const;
+
   /// Return true if this declaration has an attribute which acts as
   /// definition of the entity, such as 'alias' or 'ifunc'.
   bool hasDefiningAttr() const;
diff --git a/contrib/llvm-project/clang/include/clang/Sema/ScopeInfo.h b/contrib/llvm-project/clang/include/clang/Sema/ScopeInfo.h
index 6eaa74382685..06e47eed4e93 100644
--- a/contrib/llvm-project/clang/include/clang/Sema/ScopeInfo.h
+++ b/contrib/llvm-project/clang/include/clang/Sema/ScopeInfo.h
@@ -925,8 +925,8 @@ public:
   /// that were defined in parent contexts. Used to avoid warnings when the
   /// shadowed variables are uncaptured by this lambda.
   struct ShadowedOuterDecl {
-    const VarDecl *VD;
-    const VarDecl *ShadowedDecl;
+    const NamedDecl *VD;
+    const NamedDecl *ShadowedDecl;
   };
   llvm::SmallVector<ShadowedOuterDecl, 4> ShadowingDecls;
 
diff --git a/contrib/llvm-project/clang/include/clang/Serialization/ASTReader.h b/contrib/llvm-project/clang/include/clang/Serialization/ASTReader.h
index cd28226c295b..62c25f5b7a0d 100644
--- a/contrib/llvm-project/clang/include/clang/Serialization/ASTReader.h
+++ b/contrib/llvm-project/clang/include/clang/Serialization/ASTReader.h
@@ -2451,13 +2451,6 @@ private:
   uint32_t Value;
   uint32_t CurrentBitsIndex = ~0;
 };
-
-inline bool shouldSkipCheckingODR(const Decl *D) {
-  return D->getOwningModule() &&
-         D->getASTContext().getLangOpts().SkipODRCheckInGMF &&
-         D->getOwningModule()->isExplicitGlobalModule();
-}
-
 } // namespace clang
 
 #endif // LLVM_CLANG_SERIALIZATION_ASTREADER_H
diff --git a/contrib/llvm-project/clang/lib/AST/Decl.cpp b/contrib/llvm-project/clang/lib/AST/Decl.cpp
index 26fdfa040796..1ee33fd7576d 100644
--- a/contrib/llvm-project/clang/lib/AST/Decl.cpp
+++ b/contrib/llvm-project/clang/lib/AST/Decl.cpp
@@ -4476,7 +4476,7 @@ unsigned FunctionDecl::getODRHash() {
   }
 
   class ODRHash Hash;
-  Hash.AddFunctionDecl(this);
+  Hash.AddFunctionDecl(this, /*SkipBody=*/shouldSkipCheckingODR());
   setHasODRHash(true);
   ODRHash = Hash.CalculateHash();
   return ODRHash;
diff --git a/contrib/llvm-project/clang/lib/AST/DeclBase.cpp b/contrib/llvm-project/clang/lib/AST/DeclBase.cpp
index 8163f9bdaf8d..6b3c13ff206d 100644
--- a/contrib/llvm-project/clang/lib/AST/DeclBase.cpp
+++ b/contrib/llvm-project/clang/lib/AST/DeclBase.cpp
@@ -1102,6 +1102,11 @@ bool Decl::isInAnotherModuleUnit() const {
   return M != getASTContext().getCurrentNamedModule();
 }
 
+bool Decl::shouldSkipCheckingODR() const {
+  return getASTContext().getLangOpts().SkipODRCheckInGMF && getOwningModule() &&
+         getOwningModule()->isExplicitGlobalModule();
+}
+
 static Decl::Kind getKind(const Decl *D) { return D->getKind(); }
 static Decl::Kind getKind(const DeclContext *DC) { return DC->getDeclKind(); }
 
diff --git a/contrib/llvm-project/clang/lib/Basic/Module.cpp b/contrib/llvm-project/clang/lib/Basic/Module.cpp
index 925217431d4d..0dac8748a98a 100644
--- a/contrib/llvm-project/clang/lib/Basic/Module.cpp
+++ b/contrib/llvm-project/clang/lib/Basic/Module.cpp
@@ -301,10 +301,9 @@ bool Module::directlyUses(const Module *Requested) {
     if (Requested->isSubModuleOf(Use))
       return true;
 
-  // Anyone is allowed to use our builtin stdarg.h and stddef.h and their
-  // accompanying modules.
-  if (Requested->getTopLevelModuleName() == "_Builtin_stdarg" ||
-      Requested->getTopLevelModuleName() == "_Builtin_stddef")
+  // Anyone is allowed to use our builtin stddef.h and its accompanying modules.
+  if (Requested->fullModuleNameIs({"_Builtin_stddef", "max_align_t"}) ||
+      Requested->fullModuleNameIs({"_Builtin_stddef_wint_t"}))
     return true;
 
   if (NoUndeclaredIncludes)
diff --git a/contrib/llvm-project/clang/lib/CodeGen/BackendUtil.cpp b/contrib/llvm-project/clang/lib/CodeGen/BackendUtil.cpp
index 7877e20d77f7..4f22d35f9d3a 100644
--- a/contrib/llvm-project/clang/lib/CodeGen/BackendUtil.cpp
+++ b/contrib/llvm-project/clang/lib/CodeGen/BackendUtil.cpp
@@ -186,6 +186,14 @@ class EmitAssemblyHelper {
            TargetTriple.getVendor() != llvm::Triple::Apple;
   }
 
+  /// Check whether we should emit a flag for UnifiedLTO.
+  /// The UnifiedLTO module flag should be set when UnifiedLTO is enabled for
+  /// ThinLTO or Full LTO with module summaries.
+  bool shouldEmitUnifiedLTOModueFlag() const {
+    return CodeGenOpts.UnifiedLTO &&
+           (CodeGenOpts.PrepareForThinLTO || shouldEmitRegularLTOSummary());
+  }
+
 public:
   EmitAssemblyHelper(DiagnosticsEngine &_Diags,
                      const HeaderSearchOptions &HeaderSearchOpts,
@@ -1029,7 +1037,8 @@ void EmitAssemblyHelper::RunOptimizationPipeline(
   if (!actionRequiresCodeGen(Action) && CodeGenOpts.VerifyModule)
     MPM.addPass(VerifierPass());
 
-  if (Action == Backend_EmitBC || Action == Backend_EmitLL) {
+  if (Action == Backend_EmitBC || Action == Backend_EmitLL ||
+      CodeGenOpts.FatLTO) {
     if (CodeGenOpts.PrepareForThinLTO && !CodeGenOpts.DisableLLVMPasses) {
       if (!TheModule->getModuleFlag("EnableSplitLTOUnit"))
         TheModule->addModuleFlag(llvm::Module::Error, "EnableSplitLTOUnit",
@@ -1040,11 +1049,9 @@ void EmitAssemblyHelper::RunOptimizationPipeline(
           if (!ThinLinkOS)
             return;
         }
-        if (CodeGenOpts.UnifiedLTO)
-          TheModule->addModuleFlag(llvm::Module::Error, "UnifiedLTO", uint32_t(1));
         MPM.addPass(ThinLTOBitcodeWriterPass(
             *OS, ThinLinkOS ? &ThinLinkOS->os() : nullptr));
-      } else {
+      } else if (Action == Backend_EmitLL) {
         MPM.addPass(PrintModulePass(*OS, "", CodeGenOpts.EmitLLVMUseLists,
                                     /*EmitLTOSummary=*/true));
       }
@@ -1058,24 +1065,17 @@ void EmitAssemblyHelper::RunOptimizationPipeline(
         if (!TheModule->getModuleFlag("EnableSplitLTOUnit"))
           TheModule->addModuleFlag(llvm::Module::Error, "EnableSplitLTOUnit",
                                    uint32_t(1));
-        if (CodeGenOpts.UnifiedLTO)
-          TheModule->addModuleFlag(llvm::Module::Error, "UnifiedLTO", uint32_t(1));
       }
-      if (Action == Backend_EmitBC)
+      if (Action == Backend_EmitBC) {
         MPM.addPass(BitcodeWriterPass(*OS, CodeGenOpts.EmitLLVMUseLists,
                                       EmitLTOSummary));
-      else
+      } else if (Action == Backend_EmitLL) {
         MPM.addPass(PrintModulePass(*OS, "", CodeGenOpts.EmitLLVMUseLists,
                                     EmitLTOSummary));
+      }
     }
-  }
-  if (CodeGenOpts.FatLTO) {
-    // Set the EnableSplitLTOUnit and UnifiedLTO module flags, since FatLTO
-    // uses a different action than Backend_EmitBC or Backend_EmitLL.
-    if (!TheModule->getModuleFlag("EnableSplitLTOUnit"))
-      TheModule->addModuleFlag(llvm::Module::Error, "EnableSplitLTOUnit",
-                               uint32_t(CodeGenOpts.EnableSplitLTOUnit));
-    if (CodeGenOpts.UnifiedLTO && !TheModule->getModuleFlag("UnifiedLTO"))
+
+    if (shouldEmitUnifiedLTOModueFlag())
       TheModule->addModuleFlag(llvm::Module::Error, "UnifiedLTO", uint32_t(1));
   }
 
diff --git a/contrib/llvm-project/clang/lib/CodeGen/CGDecl.cpp b/contrib/llvm-project/clang/lib/CodeGen/CGDecl.cpp
index bbe14ef4c172..aa9997b87ecf 100644
--- a/contrib/llvm-project/clang/lib/CodeGen/CGDecl.cpp
+++ b/contrib/llvm-project/clang/lib/CodeGen/CGDecl.cpp
@@ -1241,27 +1241,38 @@ static void emitStoresForConstant(CodeGenModule &CGM, const VarDecl &D,
     return;
   }
 
-  // If the initializer is small, use a handful of stores.
+  // If the initializer is small or trivialAutoVarInit is set, use a handful of
+  // stores.
+  bool IsTrivialAutoVarInitPattern =
+      CGM.getContext().getLangOpts().getTrivialAutoVarInit() ==
+      LangOptions::TrivialAutoVarInitKind::Pattern;
   if (shouldSplitConstantStore(CGM, ConstantSize)) {
     if (auto *STy = dyn_cast<llvm::StructType>(Ty)) {
-      const llvm::StructLayout *Layout =
-          CGM.getDataLayout().getStructLayout(STy);
-      for (unsigned i = 0; i != constant->getNumOperands(); i++) {
-        CharUnits CurOff = CharUnits::fromQuantity(Layout->getElementOffset(i));
-        Address EltPtr = Builder.CreateConstInBoundsByteGEP(
-            Loc.withElementType(CGM.Int8Ty), CurOff);
-        emitStoresForConstant(CGM, D, EltPtr, isVolatile, Builder,
-                              constant->getAggregateElement(i), IsAutoInit);
+      if (STy == Loc.getElementType() ||
+          (STy != Loc.getElementType() && IsTrivialAutoVarInitPattern)) {
+        const llvm::StructLayout *Layout =
+            CGM.getDataLayout().getStructLayout(STy);
+        for (unsigned i = 0; i != constant->getNumOperands(); i++) {
+          CharUnits CurOff =
+              CharUnits::fromQuantity(Layout->getElementOffset(i));
+          Address EltPtr = Builder.CreateConstInBoundsByteGEP(
+              Loc.withElementType(CGM.Int8Ty), CurOff);
+          emitStoresForConstant(CGM, D, EltPtr, isVolatile, Builder,
+                                constant->getAggregateElement(i), IsAutoInit);
+        }
+        return;
       }
-      return;
     } else if (auto *ATy = dyn_cast<llvm::ArrayType>(Ty)) {
-      for (unsigned i = 0; i != ATy->getNumElements(); i++) {
-        Address EltPtr = Builder.CreateConstGEP(
-            Loc.withElementType(ATy->getElementType()), i);
-        emitStoresForConstant(CGM, D, EltPtr, isVolatile, Builder,
-                              constant->getAggregateElement(i), IsAutoInit);
+      if (ATy == Loc.getElementType() ||
+          (ATy != Loc.getElementType() && IsTrivialAutoVarInitPattern)) {
+        for (unsigned i = 0; i != ATy->getNumElements(); i++) {
+          Address EltPtr = Builder.CreateConstGEP(
+              Loc.withElementType(ATy->getElementType()), i);
+          emitStoresForConstant(CGM, D, EltPtr, isVolatile, Builder,
+                                constant->getAggregateElement(i), IsAutoInit);
+        }
+        return;
       }
-      return;
     }
   }
 
diff --git a/contrib/llvm-project/clang/lib/Driver/ToolChains/WebAssembly.cpp b/contrib/llvm-project/clang/lib/Driver/ToolChains/WebAssembly.cpp
index 57f4600727ec..0b16b660364f 100644
--- a/contrib/llvm-project/clang/lib/Driver/ToolChains/WebAssembly.cpp
+++ b/contrib/llvm-project/clang/lib/Driver/ToolChains/WebAssembly.cpp
@@ -44,8 +44,15 @@ std::string wasm::Linker::getLinkerPath(const ArgList &Args) const {
           llvm::sys::fs::can_execute(UseLinker))
         return std::string(UseLinker);
 
-      // Accept 'lld', and 'ld' as aliases for the default linker
-      if (UseLinker != "lld" && UseLinker != "ld")
+      // Interpret 'lld' as explicitly requesting `wasm-ld`, so look for that
+      // linker. Note that for `wasm32-wasip2` this overrides the default linker
+      // of `wasm-component-ld`.
+      if (UseLinker == "lld") {
+        return ToolChain.GetProgramPath("wasm-ld");
+      }
+
+      // Allow 'ld' as an alias for the default linker
+      if (UseLinker != "ld")
         ToolChain.getDriver().Diag(diag::err_drv_invalid_linker_name)
             << A->getAsString(Args);
     }
@@ -73,6 +80,16 @@ void wasm::Linker::ConstructJob(Compilation &C, const JobAction &JA,
   if (Args.hasArg(options::OPT_s))
     CmdArgs.push_back("--strip-all");
 
+  // On `wasip2` the default linker is `wasm-component-ld` which wraps the
+  // execution of `wasm-ld`. Find `wasm-ld` and pass it as an argument of where
+  // to find it to avoid it needing to hunt and rediscover or search `PATH` for
+  // where it is.
+  if (llvm::sys::path::stem(Linker).ends_with_insensitive(
+          "wasm-component-ld")) {
+    CmdArgs.push_back("--wasm-ld-path");
+    CmdArgs.push_back(Args.MakeArgString(ToolChain.GetProgramPath("wasm-ld")));
+  }
+
   Args.addAllArgs(CmdArgs, {options::OPT_L, options::OPT_u});
 
   ToolChain.AddFilePathLibArgs(Args, CmdArgs);
@@ -221,6 +238,12 @@ WebAssembly::WebAssembly(const Driver &D, const llvm::Triple &Triple,
   }
 }
 
+const char *WebAssembly::getDefaultLinker() const {
+  if (getOS() == "wasip2")
+    return "wasm-component-ld";
+  return "wasm-ld";
+}
+
 bool WebAssembly::IsMathErrnoDefault() const { return false; }
 
 bool WebAssembly::IsObjCNonFragileABIDefault() const { return true; }
diff --git a/contrib/llvm-project/clang/lib/Driver/ToolChains/WebAssembly.h b/contrib/llvm-project/clang/lib/Driver/ToolChains/WebAssembly.h
index ae60f464c108..76e0ca39bd74 100644
--- a/contrib/llvm-project/clang/lib/Driver/ToolChains/WebAssembly.h
+++ b/contrib/llvm-project/clang/lib/Driver/ToolChains/WebAssembly.h
@@ -67,7 +67,7 @@ private:
                            llvm::opt::ArgStringList &CmdArgs) const override;
   SanitizerMask getSupportedSanitizers() const override;
 
-  const char *getDefaultLinker() const override { return "wasm-ld"; }
+  const char *getDefaultLinker() const override;
 
   CXXStdlibType GetDefaultCXXStdlibType() const override {
     return ToolChain::CST_Libcxx;
diff --git a/contrib/llvm-project/clang/lib/Headers/__stddef_null.h b/contrib/llvm-project/clang/lib/Headers/__stddef_null.h
index 7336fdab3897..c10bd2d7d988 100644
--- a/contrib/llvm-project/clang/lib/Headers/__stddef_null.h
+++ b/contrib/llvm-project/clang/lib/Headers/__stddef_null.h
@@ -7,7 +7,7 @@
  *===-----------------------------------------------------------------------===
  */
 
-#if !defined(NULL) || !__has_feature(modules)
+#if !defined(NULL) || !__building_module(_Builtin_stddef)
 
 /* linux/stddef.h will define NULL to 0. glibc (and other) headers then define
  * __need_NULL and rely on stddef.h to redefine NULL to the correct value again.
diff --git a/contrib/llvm-project/clang/lib/Headers/__stddef_nullptr_t.h b/contrib/llvm-project/clang/lib/Headers/__stddef_nullptr_t.h
index 183d394d56c1..7f3fbe6fe0d3 100644
--- a/contrib/llvm-project/clang/lib/Headers/__stddef_nullptr_t.h
+++ b/contrib/llvm-project/clang/lib/Headers/__stddef_nullptr_t.h
@@ -7,7 +7,12 @@
  *===-----------------------------------------------------------------------===
  */
 
-#ifndef _NULLPTR_T
+/*
+ * When -fbuiltin-headers-in-system-modules is set this is a non-modular header
+ * and needs to behave as if it was textual.
+ */
+#if !defined(_NULLPTR_T) ||                                                    \
+    (__has_feature(modules) && !__building_module(_Builtin_stddef))
 #define _NULLPTR_T
 
 #ifdef __cplusplus
diff --git a/contrib/llvm-project/clang/lib/Headers/__stddef_offsetof.h b/contrib/llvm-project/clang/lib/Headers/__stddef_offsetof.h
index 3b347b3b92f6..84172c6cd273 100644
--- a/contrib/llvm-project/clang/lib/Headers/__stddef_offsetof.h
+++ b/contrib/llvm-project/clang/lib/Headers/__stddef_offsetof.h
@@ -7,6 +7,11 @@
  *===-----------------------------------------------------------------------===
  */
 
-#ifndef offsetof
+/*
+ * When -fbuiltin-headers-in-system-modules is set this is a non-modular header
+ * and needs to behave as if it was textual.
+ */
+#if !defined(offsetof) ||                                                      \
+    (__has_feature(modules) && !__building_module(_Builtin_stddef))
 #define offsetof(t, d) __builtin_offsetof(t, d)
 #endif
diff --git a/contrib/llvm-project/clang/lib/Headers/__stddef_ptrdiff_t.h b/contrib/llvm-project/clang/lib/Headers/__stddef_ptrdiff_t.h
index 3ea6d7d2852e..fd3c893c66c9 100644
--- a/contrib/llvm-project/clang/lib/Headers/__stddef_ptrdiff_t.h
+++ b/contrib/llvm-project/clang/lib/Headers/__stddef_ptrdiff_t.h
@@ -7,7 +7,12 @@
  *===-----------------------------------------------------------------------===
  */
 
-#ifndef _PTRDIFF_T
+/*
+ * When -fbuiltin-headers-in-system-modules is set this is a non-modular header
+ * and needs to behave as if it was textual.
+ */
+#if !defined(_PTRDIFF_T) ||                                                    \
+    (__has_feature(modules) && !__building_module(_Builtin_stddef))
 #define _PTRDIFF_T
 
 typedef __PTRDIFF_TYPE__ ptrdiff_t;
diff --git a/contrib/llvm-project/clang/lib/Headers/__stddef_rsize_t.h b/contrib/llvm-project/clang/lib/Headers/__stddef_rsize_t.h
index b6428d0c12b6..dd433d40d973 100644
--- a/contrib/llvm-project/clang/lib/Headers/__stddef_rsize_t.h
+++ b/contrib/llvm-project/clang/lib/Headers/__stddef_rsize_t.h
@@ -7,7 +7,12 @@
  *===-----------------------------------------------------------------------===
  */
 
-#ifndef _RSIZE_T
+/*
+ * When -fbuiltin-headers-in-system-modules is set this is a non-modular header
+ * and needs to behave as if it was textual.
+ */
+#if !defined(_RSIZE_T) ||                                                      \
+    (__has_feature(modules) && !__building_module(_Builtin_stddef))
 #define _RSIZE_T
 
 typedef __SIZE_TYPE__ rsize_t;
diff --git a/contrib/llvm-project/clang/lib/Headers/__stddef_size_t.h b/contrib/llvm-project/clang/lib/Headers/__stddef_size_t.h
index e4a389510bcd..3dd7b1f37929 100644
--- a/contrib/llvm-project/clang/lib/Headers/__stddef_size_t.h
+++ b/contrib/llvm-project/clang/lib/Headers/__stddef_size_t.h
@@ -7,7 +7,12 @@
  *===-----------------------------------------------------------------------===
  */
 
-#ifndef _SIZE_T
+/*
+ * When -fbuiltin-headers-in-system-modules is set this is a non-modular header
+ * and needs to behave as if it was textual.
+ */
+#if !defined(_SIZE_T) ||                                                       \
+    (__has_feature(modules) && !__building_module(_Builtin_stddef))
 #define _SIZE_T
 
 typedef __SIZE_TYPE__ size_t;
diff --git a/contrib/llvm-project/clang/lib/Headers/__stddef_unreachable.h b/contrib/llvm-project/clang/lib/Headers/__stddef_unreachable.h
index 3e7fe0197966..518580c92d3f 100644
--- a/contrib/llvm-project/clang/lib/Headers/__stddef_unreachable.h
+++ b/contrib/llvm-project/clang/lib/Headers/__stddef_unreachable.h
@@ -7,6 +7,11 @@
  *===-----------------------------------------------------------------------===
  */
 
-#ifndef unreachable
+/*
+ * When -fbuiltin-headers-in-system-modules is set this is a non-modular header
+ * and needs to behave as if it was textual.
+ */
+#if !defined(unreachable) ||                                                   \
+    (__has_feature(modules) && !__building_module(_Builtin_stddef))
 #define unreachable() __builtin_unreachable()
 #endif
diff --git a/contrib/llvm-project/clang/lib/Headers/__stddef_wchar_t.h b/contrib/llvm-project/clang/lib/Headers/__stddef_wchar_t.h
index 16a6186512c0..bd69f6322541 100644
--- a/contrib/llvm-project/clang/lib/Headers/__stddef_wchar_t.h
+++ b/contrib/llvm-project/clang/lib/Headers/__stddef_wchar_t.h
@@ -9,7 +9,12 @@
 
 #if !defined(__cplusplus) || (defined(_MSC_VER) && !_NATIVE_WCHAR_T_DEFINED)
 
-#ifndef _WCHAR_T
+/*
+ * When -fbuiltin-headers-in-system-modules is set this is a non-modular header
+ * and needs to behave as if it was textual.
+ */
+#if !defined(_WCHAR_T) ||                                                      \
+    (__has_feature(modules) && !__building_module(_Builtin_stddef))
 #define _WCHAR_T
 
 #ifdef _MSC_EXTENSIONS
diff --git a/contrib/llvm-project/clang/lib/Headers/larchintrin.h b/contrib/llvm-project/clang/lib/Headers/larchintrin.h
index a613e5ca0e5e..f4218295919a 100644
--- a/contrib/llvm-project/clang/lib/Headers/larchintrin.h
+++ b/contrib/llvm-project/clang/lib/Headers/larchintrin.h
@@ -156,7 +156,7 @@ extern __inline unsigned char
   return (unsigned char)__builtin_loongarch_iocsrrd_b((unsigned int)_1);
 }
 
-extern __inline unsigned char
+extern __inline unsigned short
     __attribute__((__gnu_inline__, __always_inline__, __artificial__))
     __iocsrrd_h(unsigned int _1) {
   return (unsigned short)__builtin_loongarch_iocsrrd_h((unsigned int)_1);
diff --git a/contrib/llvm-project/clang/lib/Headers/module.modulemap b/contrib/llvm-project/clang/lib/Headers/module.modulemap
index a786689d3917..56a13f69bc05 100644
--- a/contrib/llvm-project/clang/lib/Headers/module.modulemap
+++ b/contrib/llvm-project/clang/lib/Headers/module.modulemap
@@ -155,9 +155,9 @@ module _Builtin_intrinsics [system] [extern_c] {
 
 // Start -fbuiltin-headers-in-system-modules affected modules
 
-// The following modules all ignore their top level headers
-// when -fbuiltin-headers-in-system-modules is passed, and
-// most of those headers join system modules when present.
+// The following modules all ignore their headers when
+// -fbuiltin-headers-in-system-modules is passed, and many of
+// those headers join system modules when present.
 
 // e.g. if -fbuiltin-headers-in-system-modules is passed, then
 // float.h will not be in the _Builtin_float module (that module
@@ -190,11 +190,6 @@ module _Builtin_stdalign [system] {
   export *
 }
 
-// When -fbuiltin-headers-in-system-modules is passed, only
-// the top level headers are removed, the implementation headers
-// will always be in their submodules. That means when stdarg.h
-// is included, it will still import this module and make the
-// appropriate submodules visible.
 module _Builtin_stdarg [system] {
   textual header "stdarg.h"
 
@@ -237,6 +232,8 @@ module _Builtin_stdbool [system] {
 module _Builtin_stddef [system] {
   textual header "stddef.h"
 
+  // __stddef_max_align_t.h is always in this module, even if
+  // -fbuiltin-headers-in-system-modules is passed.
   explicit module max_align_t {
     header "__stddef_max_align_t.h"
     export *
@@ -283,9 +280,10 @@ module _Builtin_stddef [system] {
   }
 }
 
-/* wint_t is provided by <wchar.h> and not <stddef.h>. It's here
- * for compatibility, but must be explicitly requested. Therefore
- * __stddef_wint_t.h is not part of _Builtin_stddef. */
+// wint_t is provided by <wchar.h> and not <stddef.h>. It's here
+// for compatibility, but must be explicitly requested. Therefore
+// __stddef_wint_t.h is not part of _Builtin_stddef. It is always in
+// this module even if -fbuiltin-headers-in-system-modules is passed.
 module _Builtin_stddef_wint_t [system] {
   header "__stddef_wint_t.h"
   export *
diff --git a/contrib/llvm-project/clang/lib/Lex/ModuleMap.cpp b/contrib/llvm-project/clang/lib/Lex/ModuleMap.cpp
index afb2948f05ae..10c475f617d4 100644
--- a/contrib/llvm-project/clang/lib/Lex/ModuleMap.cpp
+++ b/contrib/llvm-project/clang/lib/Lex/ModuleMap.cpp
@@ -2498,9 +2498,12 @@ void ModuleMapParser::parseHeaderDecl(MMToken::TokenKind LeadingToken,
   }
 
   bool NeedsFramework = false;
-  // Don't add the top level headers to the builtin modules if the builtin headers
-  // belong to the system modules.
-  if (!Map.LangOpts.BuiltinHeadersInSystemModules || ActiveModule->isSubModule() || !isBuiltInModuleName(ActiveModule->Name))
+  // Don't add headers to the builtin modules if the builtin headers belong to
+  // the system modules, with the exception of __stddef_max_align_t.h which
+  // always had its own module.
+  if (!Map.LangOpts.BuiltinHeadersInSystemModules ||
+      !isBuiltInModuleName(ActiveModule->getTopLevelModuleName()) ||
+      ActiveModule->fullModuleNameIs({"_Builtin_stddef", "max_align_t"}))
     Map.addUnresolvedHeader(ActiveModule, std::move(Header), NeedsFramework);
 
   if (NeedsFramework)
diff --git a/contrib/llvm-project/clang/lib/Sema/SemaDecl.cpp b/contrib/llvm-project/clang/lib/Sema/SemaDecl.cpp
index a300badc6d02..f5bb3e0b42e2 100644
--- a/contrib/llvm-project/clang/lib/Sema/SemaDecl.cpp
+++ b/contrib/llvm-project/clang/lib/Sema/SemaDecl.cpp
@@ -8396,28 +8396,40 @@ void Sema::CheckShadow(NamedDecl *D, NamedDecl *ShadowedDecl,
 
   unsigned WarningDiag = diag::warn_decl_shadow;
   SourceLocation CaptureLoc;
-  if (isa<VarDecl>(D) && isa<VarDecl>(ShadowedDecl) && NewDC &&
-      isa<CXXMethodDecl>(NewDC)) {
+  if (isa<VarDecl>(D) && NewDC && isa<CXXMethodDecl>(NewDC)) {
     if (const auto *RD = dyn_cast<CXXRecordDecl>(NewDC->getParent())) {
       if (RD->isLambda() && OldDC->Encloses(NewDC->getLexicalParent())) {
-        if (RD->getLambdaCaptureDefault() == LCD_None) {
-          // Try to avoid warnings for lambdas with an explicit capture list.
+        if (const auto *VD = dyn_cast<VarDecl>(ShadowedDecl)) {
           const auto *LSI = cast<LambdaScopeInfo>(getCurFunction());
-          // Warn only when the lambda captures the shadowed decl explicitly.
-          CaptureLoc = getCaptureLocation(LSI, cast<VarDecl>(ShadowedDecl));
-          if (CaptureLoc.isInvalid())
-            WarningDiag = diag::warn_decl_shadow_uncaptured_local;
-        } else {
-          // Remember that this was shadowed so we can avoid the warning if the
-          // shadowed decl isn't captured and the warning settings allow it.
+          if (RD->getLambdaCaptureDefault() == LCD_None) {
+            // Try to avoid warnings for lambdas with an explicit capture
+            // list. Warn only when the lambda captures the shadowed decl
+            // explicitly.
+            CaptureLoc = getCaptureLocation(LSI, VD);
+            if (CaptureLoc.isInvalid())
+              WarningDiag = diag::warn_decl_shadow_uncaptured_local;
+          } else {
+            // Remember that this was shadowed so we can avoid the warning if
+            // the shadowed decl isn't captured and the warning settings allow
+            // it.
+            cast<LambdaScopeInfo>(getCurFunction())
+                ->ShadowingDecls.push_back({D, VD});
+            return;
+          }
+        }
+        if (isa<FieldDecl>(ShadowedDecl)) {
+          // If lambda can capture this, then emit default shadowing warning,
+          // Otherwise it is not really a shadowing case since field is not
+          // available in lambda's body.
+          // At this point we don't know that lambda can capture this, so
+          // remember that this was shadowed and delay until we know.
           cast<LambdaScopeInfo>(getCurFunction())
-              ->ShadowingDecls.push_back(
-                  {cast<VarDecl>(D), cast<VarDecl>(ShadowedDecl)});
+              ->ShadowingDecls.push_back({D, ShadowedDecl});
           return;
         }
       }
-
-      if (cast<VarDecl>(ShadowedDecl)->hasLocalStorage()) {
+      if (const auto *VD = dyn_cast<VarDecl>(ShadowedDecl);
+          VD && VD->hasLocalStorage()) {
         // A variable can't shadow a local variable in an enclosing scope, if
         // they are separated by a non-capturing declaration context.
         for (DeclContext *ParentDC = NewDC;
@@ -8468,19 +8480,28 @@ void Sema::CheckShadow(NamedDecl *D, NamedDecl *ShadowedDecl,
 /// when these variables are captured by the lambda.
 void Sema::DiagnoseShadowingLambdaDecls(const LambdaScopeInfo *LSI) {
   for (const auto &Shadow : LSI->ShadowingDecls) {
-    const VarDecl *ShadowedDecl = Shadow.ShadowedDecl;
+    const NamedDecl *ShadowedDecl = Shadow.ShadowedDecl;
     // Try to avoid the warning when the shadowed decl isn't captured.
-    SourceLocation CaptureLoc = getCaptureLocation(LSI, ShadowedDecl);
     const DeclContext *OldDC = ShadowedDecl->getDeclContext();
-    Diag(Shadow.VD->getLocation(), CaptureLoc.isInvalid()
-                                       ? diag::warn_decl_shadow_uncaptured_local
-                                       : diag::warn_decl_shadow)
-        << Shadow.VD->getDeclName()
-        << computeShadowedDeclKind(ShadowedDecl, OldDC) << OldDC;
-    if (!CaptureLoc.isInvalid())
-      Diag(CaptureLoc, diag::note_var_explicitly_captured_here)
-          << Shadow.VD->getDeclName() << /*explicitly*/ 0;
-    Diag(ShadowedDecl->getLocation(), diag::note_previous_declaration);
+    if (const auto *VD = dyn_cast<VarDecl>(ShadowedDecl)) {
+      SourceLocation CaptureLoc = getCaptureLocation(LSI, VD);
+      Diag(Shadow.VD->getLocation(),
+           CaptureLoc.isInvalid() ? diag::warn_decl_shadow_uncaptured_local
+                                  : diag::warn_decl_shadow)
+          << Shadow.VD->getDeclName()
+          << computeShadowedDeclKind(ShadowedDecl, OldDC) << OldDC;
+      if (CaptureLoc.isValid())
+        Diag(CaptureLoc, diag::note_var_explicitly_captured_here)
+            << Shadow.VD->getDeclName() << /*explicitly*/ 0;
+      Diag(ShadowedDecl->getLocation(), diag::note_previous_declaration);
+    } else if (isa<FieldDecl>(ShadowedDecl)) {
+      Diag(Shadow.VD->getLocation(),
+           LSI->isCXXThisCaptured() ? diag::warn_decl_shadow
+                                    : diag::warn_decl_shadow_uncaptured_local)
+          << Shadow.VD->getDeclName()
+          << computeShadowedDeclKind(ShadowedDecl, OldDC) << OldDC;
+      Diag(ShadowedDecl->getLocation(), diag::note_previous_declaration);
+    }
   }
 }
 
diff --git a/contrib/llvm-project/clang/lib/Sema/SemaOverload.cpp b/contrib/llvm-project/clang/lib/Sema/SemaOverload.cpp
index 940bcccb9e26..b708272ebe7d 100644
--- a/contrib/llvm-project/clang/lib/Sema/SemaOverload.cpp
+++ b/contrib/llvm-project/clang/lib/Sema/SemaOverload.cpp
@@ -14470,6 +14470,23 @@ ExprResult Sema::CreateOverloadedBinOp(SourceLocation OpLoc,
                                        CurFPFeatureOverrides());
   }
 
+  // If this is the .* operator, which is not overloadable, just
+  // create a built-in binary operator.
+  if (Opc == BO_PtrMemD) {
+    auto CheckPlaceholder = [&](Expr *&Arg) {
+      ExprResult Res = CheckPlaceholderExpr(Arg);
+      if (Res.isUsable())
+        Arg = Res.get();
+      return !Res.isUsable();
+    };
+
+    // CreateBuiltinBinOp() doesn't like it if we tell it to create a '.*'
+    // expression that contains placeholders (in either the LHS or RHS).
+    if (CheckPlaceholder(Args[0]) || CheckPlaceholder(Args[1]))
+      return ExprError();
+    return CreateBuiltinBinOp(OpLoc, Opc, Args[0], Args[1]);
+  }
+
   // Always do placeholder-like conversions on the RHS.
   if (checkPlaceholderForOverload(*this, Args[1]))
     return ExprError();
@@ -14489,11 +14506,6 @@ ExprResult Sema::CreateOverloadedBinOp(SourceLocation OpLoc,
   if (Opc == BO_Assign && !Args[0]->getType()->isOverloadableType())
     return CreateBuiltinBinOp(OpLoc, Opc, Args[0], Args[1]);
 
-  // If this is the .* operator, which is not overloadable, just
-  // create a built-in binary operator.
-  if (Opc == BO_PtrMemD)
-    return CreateBuiltinBinOp(OpLoc, Opc, Args[0], Args[1]);
-
   // Build the overload set.
   OverloadCandidateSet CandidateSet(OpLoc, OverloadCandidateSet::CSK_Operator,
                                     OverloadCandidateSet::OperatorRewriteInfo(
diff --git a/contrib/llvm-project/clang/lib/Sema/SemaTemplate.cpp b/contrib/llvm-project/clang/lib/Sema/SemaTemplate.cpp
index a381d876a54c..b619f5d729e8 100644
--- a/contrib/llvm-project/clang/lib/Sema/SemaTemplate.cpp
+++ b/contrib/llvm-project/clang/lib/Sema/SemaTemplate.cpp
@@ -1830,7 +1830,27 @@ static TemplateParameterList *GetTemplateParameterList(TemplateDecl *TD) {
   // Make sure we get the template parameter list from the most
   // recent declaration, since that is the only one that is guaranteed to
   // have all the default template argument information.
-  return cast<TemplateDecl>(TD->getMostRecentDecl())->getTemplateParameters();
+  Decl *D = TD->getMostRecentDecl();
+  // C++11 [temp.param]p12:
+  // A default template argument shall not be specified in a friend class
+  // template declaration.
+  //
+  // Skip past friend *declarations* because they are not supposed to contain
+  // default template arguments. Moreover, these declarations may introduce
+  // template parameters living in different template depths than the
+  // corresponding template parameters in TD, causing unmatched constraint
+  // substitution.
+  //
+  // FIXME: Diagnose such cases within a class template:
+  //  template <class T>
+  //  struct S {
+  //    template <class = void> friend struct C;
+  //  };
+  //  template struct S<int>;
+  while (D->getFriendObjectKind() != Decl::FriendObjectKind::FOK_None &&
+         D->getPreviousDecl())
+    D = D->getPreviousDecl();
+  return cast<TemplateDecl>(D)->getTemplateParameters();
 }
 
 DeclResult Sema::CheckClassTemplate(
diff --git a/contrib/llvm-project/clang/lib/Serialization/ASTReader.cpp b/contrib/llvm-project/clang/lib/Serialization/ASTReader.cpp
index 028610deb300..490b8cb10a48 100644
--- a/contrib/llvm-project/clang/lib/Serialization/ASTReader.cpp
+++ b/contrib/llvm-project/clang/lib/Serialization/ASTReader.cpp
@@ -9745,7 +9745,7 @@ void ASTReader::finishPendingActions() {
             !NonConstDefn->isLateTemplateParsed() &&
             // We only perform ODR checks for decls not in the explicit
             // global module fragment.
-            !shouldSkipCheckingODR(FD) &&
+            !FD->shouldSkipCheckingODR() &&
             FD->getODRHash() != NonConstDefn->getODRHash()) {
           if (!isa<CXXMethodDecl>(FD)) {
             PendingFunctionOdrMergeFailures[FD].push_back(NonConstDefn);
diff --git a/contrib/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp b/contrib/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp
index 321c11e55c14..110f55f8c0f4 100644
--- a/contrib/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp
+++ b/contrib/llvm-project/clang/lib/Serialization/ASTReaderDecl.cpp
@@ -832,7 +832,7 @@ void ASTDeclReader::VisitEnumDecl(EnumDecl *ED) {
       Reader.mergeDefinitionVisibility(OldDef, ED);
       // We don't want to check the ODR hash value for declarations from global
       // module fragment.
-      if (!shouldSkipCheckingODR(ED) &&
+      if (!ED->shouldSkipCheckingODR() &&
           OldDef->getODRHash() != ED->getODRHash())
         Reader.PendingEnumOdrMergeFailures[OldDef].push_back(ED);
     } else {
@@ -874,7 +874,7 @@ void ASTDeclReader::VisitRecordDecl(RecordDecl *RD) {
   VisitRecordDeclImpl(RD);
   // We should only reach here if we're in C/Objective-C. There is no
   // global module fragment.
-  assert(!shouldSkipCheckingODR(RD));
+  assert(!RD->shouldSkipCheckingODR());
   RD->setODRHash(Record.readInt());
 
   // Maintain the invariant of a redeclaration chain containing only
@@ -2152,7 +2152,7 @@ void ASTDeclReader::MergeDefinitionData(
   }
 
   // We don't want to check ODR for decls in the global module fragment.
-  if (shouldSkipCheckingODR(MergeDD.Definition))
+  if (MergeDD.Definition->shouldSkipCheckingODR())
     return;
 
   if (D->getODRHash() != MergeDD.ODRHash) {
@@ -3526,7 +3526,7 @@ ASTDeclReader::FindExistingResult ASTDeclReader::findExisting(NamedDecl *D) {
   // same template specialization into the same CXXRecordDecl.
   auto MergedDCIt = Reader.MergedDeclContexts.find(D->getLexicalDeclContext());
   if (MergedDCIt != Reader.MergedDeclContexts.end() &&
-      !shouldSkipCheckingODR(D) && MergedDCIt->second == D->getDeclContext())
+      !D->shouldSkipCheckingODR() && MergedDCIt->second == D->getDeclContext())
     Reader.PendingOdrMergeChecks.push_back(D);
 
   return FindExistingResult(Reader, D, /*Existing=*/nullptr,
diff --git a/contrib/llvm-project/clang/lib/Serialization/ASTWriter.cpp b/contrib/llvm-project/clang/lib/Serialization/ASTWriter.cpp
index 73018c1170d8..378a1f86bd53 100644
--- a/contrib/llvm-project/clang/lib/Serialization/ASTWriter.cpp
+++ b/contrib/llvm-project/clang/lib/Serialization/ASTWriter.cpp
@@ -6010,7 +6010,7 @@ void ASTRecordWriter::AddCXXDefinitionData(const CXXRecordDecl *D) {
 
   BitsPacker DefinitionBits;
 
-  bool ShouldSkipCheckingODR = shouldSkipCheckingODR(D);
+  bool ShouldSkipCheckingODR = D->shouldSkipCheckingODR();
   DefinitionBits.addBit(ShouldSkipCheckingODR);
 
 #define FIELD(Name, Width, Merge)                                              \
diff --git a/contrib/llvm-project/clang/lib/Serialization/ASTWriterDecl.cpp b/contrib/llvm-project/clang/lib/Serialization/ASTWriterDecl.cpp
index e73800100e3c..42583c09f009 100644
--- a/contrib/llvm-project/clang/lib/Serialization/ASTWriterDecl.cpp
+++ b/contrib/llvm-project/clang/lib/Serialization/ASTWriterDecl.cpp
@@ -488,7 +488,7 @@ void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) {
   BitsPacker EnumDeclBits;
   EnumDeclBits.addBits(D->getNumPositiveBits(), /*BitWidth=*/8);
   EnumDeclBits.addBits(D->getNumNegativeBits(), /*BitWidth=*/8);
-  bool ShouldSkipCheckingODR = shouldSkipCheckingODR(D);
+  bool ShouldSkipCheckingODR = D->shouldSkipCheckingODR();
   EnumDeclBits.addBit(ShouldSkipCheckingODR);
   EnumDeclBits.addBit(D->isScoped());
   EnumDeclBits.addBit(D->isScopedUsingClassTag());
@@ -514,7 +514,7 @@ void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) {
       !D->isTopLevelDeclInObjCContainer() &&
       !CXXRecordDecl::classofKind(D->getKind()) &&
       !D->getIntegerTypeSourceInfo() && !D->getMemberSpecializationInfo() &&
-      !needsAnonymousDeclarationNumber(D) && !shouldSkipCheckingODR(D) &&
+      !needsAnonymousDeclarationNumber(D) && !D->shouldSkipCheckingODR() &&
       D->getDeclName().getNameKind() == DeclarationName::Identifier)
     AbbrevToUse = Writer.getDeclEnumAbbrev();
 
@@ -680,7 +680,7 @@ void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) {
   // FIXME: stable encoding
   FunctionDeclBits.addBits(llvm::to_underlying(D->getLinkageInternal()), 3);
   FunctionDeclBits.addBits((uint32_t)D->getStorageClass(), /*BitWidth=*/3);
-  bool ShouldSkipCheckingODR = shouldSkipCheckingODR(D);
+  bool ShouldSkipCheckingODR = D->shouldSkipCheckingODR();
   FunctionDeclBits.addBit(ShouldSkipCheckingODR);
   FunctionDeclBits.addBit(D->isInlineSpecified());
   FunctionDeclBits.addBit(D->isInlined());
@@ -1514,7 +1514,7 @@ void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) {
       D->getFirstDecl() == D->getMostRecentDecl() && !D->isInvalidDecl() &&
       !D->hasAttrs() && !D->isTopLevelDeclInObjCContainer() &&
       D->getDeclName().getNameKind() == DeclarationName::Identifier &&
-      !shouldSkipCheckingODR(D) && !D->hasExtInfo() &&
+      !D->shouldSkipCheckingODR() && !D->hasExtInfo() &&
       !D->isExplicitlyDefaulted()) {
     if (D->getTemplatedKind() == FunctionDecl::TK_NonTemplate ||
         D->getTemplatedKind() == FunctionDecl::TK_FunctionTemplate ||
diff --git a/contrib/llvm-project/clang/lib/StaticAnalyzer/Core/CallEvent.cpp b/contrib/llvm-project/clang/lib/StaticAnalyzer/Core/CallEvent.cpp
index 0ac1d91b79be..bc14aea27f67 100644
--- a/contrib/llvm-project/clang/lib/StaticAnalyzer/Core/CallEvent.cpp
+++ b/contrib/llvm-project/clang/lib/StaticAnalyzer/Core/CallEvent.cpp
@@ -1409,7 +1409,7 @@ CallEventManager::getSimpleCall(const CallExpr *CE, ProgramStateRef State,
   if (const auto *OpCE = dyn_cast<CXXOperatorCallExpr>(CE)) {
     const FunctionDecl *DirectCallee = OpCE->getDirectCallee();
     if (const auto *MD = dyn_cast<CXXMethodDecl>(DirectCallee))
-      if (MD->isInstance())
+      if (MD->isImplicitObjectMemberFunction())
         return create<CXXMemberOperatorCall>(OpCE, State, LCtx, ElemRef);
 
   } else if (CE->getCallee()->getType()->isBlockPointerType()) {
diff --git a/contrib/llvm-project/compiler-rt/lib/builtins/divtc3.c b/contrib/llvm-project/compiler-rt/lib/builtins/divtc3.c
index e970cef574b2..099de5802daf 100644
--- a/contrib/llvm-project/compiler-rt/lib/builtins/divtc3.c
+++ b/contrib/llvm-project/compiler-rt/lib/builtins/divtc3.c
@@ -13,7 +13,7 @@
 #define QUAD_PRECISION
 #include "fp_lib.h"
 
-#if defined(CRT_HAS_TF_MODE)
+#if defined(CRT_HAS_F128)
 
 // Returns: the quotient of (a + ib) / (c + id)
 
diff --git a/contrib/llvm-project/compiler-rt/lib/builtins/fp_lib.h b/contrib/llvm-project/compiler-rt/lib/builtins/fp_lib.h
index af406e760497..c4f0a5b9587f 100644
--- a/contrib/llvm-project/compiler-rt/lib/builtins/fp_lib.h
+++ b/contrib/llvm-project/compiler-rt/lib/builtins/fp_lib.h
@@ -22,6 +22,7 @@
 
 #include "int_lib.h"
 #include "int_math.h"
+#include "int_types.h"
 #include <limits.h>
 #include <stdbool.h>
 #include <stdint.h>
@@ -93,13 +94,14 @@ static __inline void wideMultiply(rep_t a, rep_t b, rep_t *hi, rep_t *lo) {
 COMPILER_RT_ABI fp_t __adddf3(fp_t a, fp_t b);
 
 #elif defined QUAD_PRECISION
-#if defined(CRT_HAS_TF_MODE)
+#if defined(CRT_HAS_F128) && defined(CRT_HAS_128BIT)
 typedef uint64_t half_rep_t;
 typedef __uint128_t rep_t;
 typedef __int128_t srep_t;
 typedef tf_float fp_t;
 #define HALF_REP_C UINT64_C
 #define REP_C (__uint128_t)
+#if defined(CRT_HAS_IEEE_TF)
 // Note: Since there is no explicit way to tell compiler the constant is a
 // 128-bit integer, we let the constant be casted to 128-bit integer
 #define significandBits 112
@@ -188,7 +190,10 @@ static __inline void wideMultiply(rep_t a, rep_t b, rep_t *hi, rep_t *lo) {
 #undef Word_HiMask
 #undef Word_LoMask
 #undef Word_FullMask
-#endif // defined(CRT_HAS_TF_MODE)
+#endif // defined(CRT_HAS_IEEE_TF)
+#else
+typedef long double fp_t;
+#endif // defined(CRT_HAS_F128) && defined(CRT_HAS_128BIT)
 #else
 #error SINGLE_PRECISION, DOUBLE_PRECISION or QUAD_PRECISION must be defined.
 #endif
@@ -196,19 +201,6 @@ static __inline void wideMultiply(rep_t a, rep_t b, rep_t *hi, rep_t *lo) {
 #if defined(SINGLE_PRECISION) || defined(DOUBLE_PRECISION) ||                  \
     (defined(QUAD_PRECISION) && defined(CRT_HAS_TF_MODE))
 #define typeWidth (sizeof(rep_t) * CHAR_BIT)
-#define exponentBits (typeWidth - significandBits - 1)
-#define maxExponent ((1 << exponentBits) - 1)
-#define exponentBias (maxExponent >> 1)
-
-#define implicitBit (REP_C(1) << significandBits)
-#define significandMask (implicitBit - 1U)
-#define signBit (REP_C(1) << (significandBits + exponentBits))
-#define absMask (signBit - 1U)
-#define exponentMask (absMask ^ significandMask)
-#define oneRep ((rep_t)exponentBias << significandBits)
-#define infRep exponentMask
-#define quietBit (implicitBit >> 1)
-#define qnanRep (exponentMask | quietBit)
 
 static __inline rep_t toRep(fp_t x) {
   const union {
@@ -226,6 +218,21 @@ static __inline fp_t fromRep(rep_t x) {
   return rep.f;
 }
 
+#if !defined(QUAD_PRECISION) || defined(CRT_HAS_IEEE_TF)
+#define exponentBits (typeWidth - significandBits - 1)
+#define maxExponent ((1 << exponentBits) - 1)
+#define exponentBias (maxExponent >> 1)
+
+#define implicitBit (REP_C(1) << significandBits)
+#define significandMask (implicitBit - 1U)
+#define signBit (REP_C(1) << (significandBits + exponentBits))
+#define absMask (signBit - 1U)
+#define exponentMask (absMask ^ significandMask)
+#define oneRep ((rep_t)exponentBias << significandBits)
+#define infRep exponentMask
+#define quietBit (implicitBit >> 1)
+#define qnanRep (exponentMask | quietBit)
+
 static __inline int normalize(rep_t *significand) {
   const int shift = rep_clz(*significand) - rep_clz(implicitBit);
   *significand <<= shift;
@@ -328,6 +335,8 @@ static __inline fp_t __compiler_rt_scalbnX(fp_t x, int y) {
     return fromRep(sign | ((rep_t)exp << significandBits) | sig);
 }
 
+#endif // !defined(QUAD_PRECISION) || defined(CRT_HAS_IEEE_TF)
+
 // Avoid using fmax from libm.
 static __inline fp_t __compiler_rt_fmaxX(fp_t x, fp_t y) {
   // If either argument is NaN, return the other argument. If both are NaN,
@@ -405,6 +414,8 @@ static __inline tf_float __compiler_rt_fmaxtf(tf_float x, tf_float y) {
 #define __compiler_rt_logbl crt_logbl
 #define __compiler_rt_scalbnl crt_scalbnl
 #define __compiler_rt_fmaxl crt_fmaxl
+#define crt_fabstf crt_fabsl
+#define crt_copysigntf crt_copysignl
 #else
 #error Unsupported TF mode type
 #endif
diff --git a/contrib/llvm-project/compiler-rt/lib/builtins/int_types.h b/contrib/llvm-project/compiler-rt/lib/builtins/int_types.h
index 7624c7280615..ca97391fc284 100644
--- a/contrib/llvm-project/compiler-rt/lib/builtins/int_types.h
+++ b/contrib/llvm-project/compiler-rt/lib/builtins/int_types.h
@@ -189,12 +189,16 @@ typedef long double tf_float;
 #define CRT_LDBL_IEEE_F128
 #endif
 #define TF_C(x) x##L
-#elif __LDBL_MANT_DIG__ == 113
-// Use long double instead of __float128 if it matches the IEEE 128-bit format.
+#elif __LDBL_MANT_DIG__ == 113 ||                                              \
+    (__FLT_RADIX__ == 16 && __LDBL_MANT_DIG__ == 28)
+// Use long double instead of __float128 if it matches the IEEE 128-bit format
+// or the IBM hexadecimal format.
 #define CRT_LDBL_128BIT
 #define CRT_HAS_F128
+#if __LDBL_MANT_DIG__ == 113
 #define CRT_HAS_IEEE_TF
 #define CRT_LDBL_IEEE_F128
+#endif
 typedef long double tf_float;
 #define TF_C(x) x##L
 #elif defined(__FLOAT128__) || defined(__SIZEOF_FLOAT128__)
diff --git a/contrib/llvm-project/compiler-rt/lib/builtins/multc3.c b/contrib/llvm-project/compiler-rt/lib/builtins/multc3.c
index f20e53ccbf23..61a3f45e4727 100644
--- a/contrib/llvm-project/compiler-rt/lib/builtins/multc3.c
+++ b/contrib/llvm-project/compiler-rt/lib/builtins/multc3.c
@@ -15,7 +15,7 @@
 #include "int_lib.h"
 #include "int_math.h"
 
-#if defined(CRT_HAS_TF_MODE)
+#if defined(CRT_HAS_F128)
 
 // Returns: the product of a + ib and c + id
 
diff --git a/contrib/llvm-project/compiler-rt/lib/msan/msan.cpp b/contrib/llvm-project/compiler-rt/lib/msan/msan.cpp
index 3cdf10c14990..a2fc27de1901 100644
--- a/contrib/llvm-project/compiler-rt/lib/msan/msan.cpp
+++ b/contrib/llvm-project/compiler-rt/lib/msan/msan.cpp
@@ -467,7 +467,7 @@ void __msan_init() {
   __msan_clear_on_return();
   if (__msan_get_track_origins())
     VPrintf(1, "msan_track_origins\n");
-  if (!InitShadow(__msan_get_track_origins())) {
+  if (!InitShadowWithReExec(__msan_get_track_origins())) {
     Printf("FATAL: MemorySanitizer can not mmap the shadow memory.\n");
     Printf("FATAL: Make sure to compile with -fPIE and to link with -pie.\n");
     Printf("FATAL: Disabling ASLR is known to cause this error.\n");
diff --git a/contrib/llvm-project/compiler-rt/lib/msan/msan.h b/contrib/llvm-project/compiler-rt/lib/msan/msan.h
index 710447a3e1a3..7fb58be67a02 100644
--- a/contrib/llvm-project/compiler-rt/lib/msan/msan.h
+++ b/contrib/llvm-project/compiler-rt/lib/msan/msan.h
@@ -33,12 +33,18 @@ struct MappingDesc {
   uptr start;
   uptr end;
   enum Type {
-    INVALID, APP, SHADOW, ORIGIN
+    INVALID = 1,
+    ALLOCATOR = 2,
+    APP = 4,
+    SHADOW = 8,
+    ORIGIN = 16,
   } type;
   const char *name;
 };
 
-
+// Note: MappingDesc::ALLOCATOR entries are only used to check for memory
+// layout compatibility. The actual allocation settings are in
+// msan_allocator.cpp, which need to be kept in sync.
 #if SANITIZER_LINUX && defined(__mips64)
 
 // MIPS64 maps:
@@ -84,7 +90,8 @@ const MappingDesc kMemoryLayout[] = {
     {0X0B00000000000, 0X0C00000000000, MappingDesc::SHADOW, "shadow-10-13"},
     {0X0C00000000000, 0X0D00000000000, MappingDesc::INVALID, "invalid"},
     {0X0D00000000000, 0X0E00000000000, MappingDesc::ORIGIN, "origin-10-13"},
-    {0X0E00000000000, 0X1000000000000, MappingDesc::APP, "app-15"},
+    {0x0E00000000000, 0x0E40000000000, MappingDesc::ALLOCATOR, "allocator"},
+    {0X0E40000000000, 0X1000000000000, MappingDesc::APP, "app-15"},
 };
 # define MEM_TO_SHADOW(mem) ((uptr)mem ^ 0xB00000000000ULL)
 # define SHADOW_TO_ORIGIN(shadow) (((uptr)(shadow)) + 0x200000000000ULL)
@@ -106,7 +113,8 @@ const MappingDesc kMemoryLayout[] = {
     {0x510000000000ULL, 0x600000000000ULL, MappingDesc::APP, "app-2"},
     {0x600000000000ULL, 0x610000000000ULL, MappingDesc::ORIGIN, "origin-1"},
     {0x610000000000ULL, 0x700000000000ULL, MappingDesc::INVALID, "invalid"},
-    {0x700000000000ULL, 0x800000000000ULL, MappingDesc::APP, "app-3"}};
+    {0x700000000000ULL, 0x740000000000ULL, MappingDesc::ALLOCATOR, "allocator"},
+    {0x740000000000ULL, 0x800000000000ULL, MappingDesc::APP, "app-3"}};
 #  define MEM_TO_SHADOW(mem) (((uptr)(mem)) ^ 0x500000000000ULL)
 #  define SHADOW_TO_ORIGIN(shadow) (((uptr)(shadow)) + 0x100000000000ULL)
 
@@ -118,7 +126,8 @@ const MappingDesc kMemoryLayout[] = {
     {0x180200000000ULL, 0x1C0000000000ULL, MappingDesc::INVALID, "invalid"},
     {0x1C0000000000ULL, 0x2C0200000000ULL, MappingDesc::ORIGIN, "origin"},
     {0x2C0200000000ULL, 0x300000000000ULL, MappingDesc::INVALID, "invalid"},
-    {0x300000000000ULL, 0x800000000000ULL, MappingDesc::APP, "high memory"}};
+    {0x300000000000ULL, 0x320000000000ULL, MappingDesc::ALLOCATOR, "allocator"},
+    {0x320000000000ULL, 0x800000000000ULL, MappingDesc::APP, "high memory"}};
 
 // Various kernels use different low end ranges but we can combine them into one
 // big range. They also use different high end ranges but we can map them all to
@@ -141,7 +150,8 @@ const MappingDesc kMemoryLayout[] = {
     {0x180000000000ULL, 0x1C0000000000ULL, MappingDesc::INVALID, "invalid"},
     {0x1C0000000000ULL, 0x2C0000000000ULL, MappingDesc::ORIGIN, "origin"},
     {0x2C0000000000ULL, 0x440000000000ULL, MappingDesc::INVALID, "invalid"},
-    {0x440000000000ULL, 0x500000000000ULL, MappingDesc::APP, "high memory"}};
+    {0x440000000000ULL, 0x460000000000ULL, MappingDesc::ALLOCATOR, "allocator"},
+    {0x460000000000ULL, 0x500000000000ULL, MappingDesc::APP, "high memory"}};
 
 #define MEM_TO_SHADOW(mem) \
   ((((uptr)(mem)) & ~0xC00000000000ULL) + 0x080000000000ULL)
@@ -208,7 +218,8 @@ const MappingDesc kMemoryLayout[] = {
     {0x510000000000ULL, 0x600000000000ULL, MappingDesc::APP, "app-2"},
     {0x600000000000ULL, 0x610000000000ULL, MappingDesc::ORIGIN, "origin-1"},
     {0x610000000000ULL, 0x700000000000ULL, MappingDesc::INVALID, "invalid"},
-    {0x700000000000ULL, 0x800000000000ULL, MappingDesc::APP, "app-3"}};
+    {0x700000000000ULL, 0x740000000000ULL, MappingDesc::ALLOCATOR, "allocator"},
+    {0x740000000000ULL, 0x800000000000ULL, MappingDesc::APP, "app-3"}};
 #define MEM_TO_SHADOW(mem) (((uptr)(mem)) ^ 0x500000000000ULL)
 #define SHADOW_TO_ORIGIN(mem) (((uptr)(mem)) + 0x100000000000ULL)
 
@@ -223,20 +234,22 @@ const uptr kMemoryLayoutSize = sizeof(kMemoryLayout) / sizeof(kMemoryLayout[0]);
 #ifndef __clang__
 __attribute__((optimize("unroll-loops")))
 #endif
-inline bool addr_is_type(uptr addr, MappingDesc::Type mapping_type) {
+inline bool
+addr_is_type(uptr addr, int mapping_types) {
 // It is critical for performance that this loop is unrolled (because then it is
 // simplified into just a few constant comparisons).
 #ifdef __clang__
 #pragma unroll
 #endif
   for (unsigned i = 0; i < kMemoryLayoutSize; ++i)
-    if (kMemoryLayout[i].type == mapping_type &&
+    if ((kMemoryLayout[i].type & mapping_types) &&
         addr >= kMemoryLayout[i].start && addr < kMemoryLayout[i].end)
       return true;
   return false;
 }
 
-#define MEM_IS_APP(mem) addr_is_type((uptr)(mem), MappingDesc::APP)
+#define MEM_IS_APP(mem) \
+  (addr_is_type((uptr)(mem), MappingDesc::APP | MappingDesc::ALLOCATOR))
 #define MEM_IS_SHADOW(mem) addr_is_type((uptr)(mem), MappingDesc::SHADOW)
 #define MEM_IS_ORIGIN(mem) addr_is_type((uptr)(mem), MappingDesc::ORIGIN)
 
@@ -250,7 +263,7 @@ extern bool msan_init_is_running;
 extern int msan_report_count;
 
 bool ProtectRange(uptr beg, uptr end);
-bool InitShadow(bool init_origins);
+bool InitShadowWithReExec(bool init_origins);
 char *GetProcSelfMaps();
 void InitializeInterceptors();
 
diff --git a/contrib/llvm-project/compiler-rt/lib/msan/msan_allocator.cpp b/contrib/llvm-project/compiler-rt/lib/msan/msan_allocator.cpp
index 0b2dd2b2f188..b1bc5b9390f7 100644
--- a/contrib/llvm-project/compiler-rt/lib/msan/msan_allocator.cpp
+++ b/contrib/llvm-project/compiler-rt/lib/msan/msan_allocator.cpp
@@ -48,6 +48,9 @@ struct MsanMapUnmapCallback {
   }
 };
 
+// Note: to ensure that the allocator is compatible with the application memory
+// layout (especially with high-entropy ASLR), kSpaceBeg and kSpaceSize must be
+// duplicated as MappingDesc::ALLOCATOR in msan.h.
 #if defined(__mips64)
 static const uptr kMaxAllowedMallocSize = 2UL << 30;
 
diff --git a/contrib/llvm-project/compiler-rt/lib/msan/msan_linux.cpp b/contrib/llvm-project/compiler-rt/lib/msan/msan_linux.cpp
index c7ecb7cad566..cd2d9f5c720c 100644
--- a/contrib/llvm-project/compiler-rt/lib/msan/msan_linux.cpp
+++ b/contrib/llvm-project/compiler-rt/lib/msan/msan_linux.cpp
@@ -20,6 +20,9 @@
 #  include <signal.h>
 #  include <stdio.h>
 #  include <stdlib.h>
+#  if SANITIZER_LINUX
+#    include <sys/personality.h>
+#  endif
 #  include <sys/resource.h>
 #  include <sys/time.h>
 #  include <unistd.h>
@@ -43,11 +46,13 @@ void ReportMapRange(const char *descr, uptr beg, uptr size) {
   }
 }
 
-static bool CheckMemoryRangeAvailability(uptr beg, uptr size) {
+static bool CheckMemoryRangeAvailability(uptr beg, uptr size, bool verbose) {
   if (size > 0) {
     uptr end = beg + size - 1;
     if (!MemoryRangeIsAvailable(beg, end)) {
-      Printf("FATAL: Memory range 0x%zx - 0x%zx is not available.\n", beg, end);
+      if (verbose)
+        Printf("FATAL: Memory range 0x%zx - 0x%zx is not available.\n", beg,
+               end);
       return false;
     }
   }
@@ -86,7 +91,7 @@ static void CheckMemoryLayoutSanity() {
     CHECK(addr_is_type(start, type));
     CHECK(addr_is_type((start + end) / 2, type));
     CHECK(addr_is_type(end - 1, type));
-    if (type == MappingDesc::APP) {
+    if (type == MappingDesc::APP || type == MappingDesc::ALLOCATOR) {
       uptr addr = start;
       CHECK(MEM_IS_SHADOW(MEM_TO_SHADOW(addr)));
       CHECK(MEM_IS_ORIGIN(MEM_TO_ORIGIN(addr)));
@@ -106,7 +111,7 @@ static void CheckMemoryLayoutSanity() {
   }
 }
 
-bool InitShadow(bool init_origins) {
+static bool InitShadow(bool init_origins, bool dry_run) {
   // Let user know mapping parameters first.
   VPrintf(1, "__msan_init %p\n", reinterpret_cast<void *>(&__msan_init));
   for (unsigned i = 0; i < kMemoryLayoutSize; ++i)
@@ -116,8 +121,9 @@ bool InitShadow(bool init_origins) {
   CheckMemoryLayoutSanity();
 
   if (!MEM_IS_APP(&__msan_init)) {
-    Printf("FATAL: Code %p is out of application range. Non-PIE build?\n",
-           reinterpret_cast<void *>(&__msan_init));
+    if (!dry_run)
+      Printf("FATAL: Code %p is out of application range. Non-PIE build?\n",
+             reinterpret_cast<void *>(&__msan_init));
     return false;
   }
 
@@ -138,20 +144,26 @@ bool InitShadow(bool init_origins) {
     bool protect = type == MappingDesc::INVALID ||
                    (!init_origins && type == MappingDesc::ORIGIN);
     CHECK(!(map && protect));
-    if (!map && !protect)
-      CHECK(type == MappingDesc::APP);
+    if (!map && !protect) {
+      CHECK(type == MappingDesc::APP || type == MappingDesc::ALLOCATOR);
+
+      if (dry_run && type == MappingDesc::ALLOCATOR &&
+          !CheckMemoryRangeAvailability(start, size, !dry_run))
+        return false;
+    }
     if (map) {
-      if (!CheckMemoryRangeAvailability(start, size))
+      if (dry_run && !CheckMemoryRangeAvailability(start, size, !dry_run))
         return false;
-      if (!MmapFixedSuperNoReserve(start, size, kMemoryLayout[i].name))
+      if (!dry_run &&
+          !MmapFixedSuperNoReserve(start, size, kMemoryLayout[i].name))
         return false;
-      if (common_flags()->use_madv_dontdump)
+      if (!dry_run && common_flags()->use_madv_dontdump)
         DontDumpShadowMemory(start, size);
     }
     if (protect) {
-      if (!CheckMemoryRangeAvailability(start, size))
+      if (dry_run && !CheckMemoryRangeAvailability(start, size, !dry_run))
         return false;
-      if (!ProtectMemoryRange(start, size, kMemoryLayout[i].name))
+      if (!dry_run && !ProtectMemoryRange(start, size, kMemoryLayout[i].name))
         return false;
     }
   }
@@ -159,6 +171,35 @@ bool InitShadow(bool init_origins) {
   return true;
 }
 
+bool InitShadowWithReExec(bool init_origins) {
+  // Start with dry run: check layout is ok, but don't print warnings because
+  // warning messages will cause tests to fail (even if we successfully re-exec
+  // after the warning).
+  bool success = InitShadow(__msan_get_track_origins(), true);
+  if (!success) {
+#  if SANITIZER_LINUX
+    // Perhaps ASLR entropy is too high. If ASLR is enabled, re-exec without it.
+    int old_personality = personality(0xffffffff);
+    bool aslr_on =
+        (old_personality != -1) && ((old_personality & ADDR_NO_RANDOMIZE) == 0);
+
+    if (aslr_on) {
+      VReport(1,
+              "WARNING: MemorySanitizer: memory layout is incompatible, "
+              "possibly due to high-entropy ASLR.\n"
+              "Re-execing with fixed virtual address space.\n"
+              "N.B. reducing ASLR entropy is preferable.\n");
+      CHECK_NE(personality(old_personality | ADDR_NO_RANDOMIZE), -1);
+      ReExec();
+    }
+#  endif
+  }
+
+  // The earlier dry run didn't actually map or protect anything. Run again in
+  // non-dry run mode.
+  return success && InitShadow(__msan_get_track_origins(), false);
+}
+
 static void MsanAtExit(void) {
   if (flags()->print_stats && (flags()->atexit || msan_report_count > 0))
     ReportStats();
diff --git a/contrib/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp b/contrib/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp
index a9f6673ac44e..d0282c270431 100644
--- a/contrib/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp
+++ b/contrib/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp
@@ -14,6 +14,7 @@
 
 #include "sanitizer_common/sanitizer_atomic.h"
 #include "sanitizer_common/sanitizer_errno.h"
+#include "sanitizer_common/sanitizer_glibc_version.h"
 #include "sanitizer_common/sanitizer_libc.h"
 #include "sanitizer_common/sanitizer_linux.h"
 #include "sanitizer_common/sanitizer_platform_limits_netbsd.h"
@@ -1613,47 +1614,40 @@ TSAN_INTERCEPTOR(int, __fxstat, int version, int fd, void *buf) {
     FdAccess(thr, pc, fd);
   return REAL(__fxstat)(version, fd, buf);
 }
-#define TSAN_MAYBE_INTERCEPT___FXSTAT TSAN_INTERCEPT(__fxstat)
+
+TSAN_INTERCEPTOR(int, __fxstat64, int version, int fd, void *buf) {
+  SCOPED_TSAN_INTERCEPTOR(__fxstat64, version, fd, buf);
+  if (fd > 0)
+    FdAccess(thr, pc, fd);
+  return REAL(__fxstat64)(version, fd, buf);
+}
+#define TSAN_MAYBE_INTERCEPT___FXSTAT TSAN_INTERCEPT(__fxstat); TSAN_INTERCEPT(__fxstat64)
 #else
 #define TSAN_MAYBE_INTERCEPT___FXSTAT
 #endif
 
+#if !SANITIZER_GLIBC || __GLIBC_PREREQ(2, 33)
 TSAN_INTERCEPTOR(int, fstat, int fd, void *buf) {
-#if SANITIZER_GLIBC
-  SCOPED_TSAN_INTERCEPTOR(__fxstat, 0, fd, buf);
-  if (fd > 0)
-    FdAccess(thr, pc, fd);
-  return REAL(__fxstat)(0, fd, buf);
-#else
   SCOPED_TSAN_INTERCEPTOR(fstat, fd, buf);
   if (fd > 0)
     FdAccess(thr, pc, fd);
   return REAL(fstat)(fd, buf);
-#endif
-}
-
-#if SANITIZER_GLIBC
-TSAN_INTERCEPTOR(int, __fxstat64, int version, int fd, void *buf) {
-  SCOPED_TSAN_INTERCEPTOR(__fxstat64, version, fd, buf);
-  if (fd > 0)
-    FdAccess(thr, pc, fd);
-  return REAL(__fxstat64)(version, fd, buf);
 }
-#define TSAN_MAYBE_INTERCEPT___FXSTAT64 TSAN_INTERCEPT(__fxstat64)
+#  define TSAN_MAYBE_INTERCEPT_FSTAT TSAN_INTERCEPT(fstat)
 #else
-#define TSAN_MAYBE_INTERCEPT___FXSTAT64
+#  define TSAN_MAYBE_INTERCEPT_FSTAT
 #endif
 
-#if SANITIZER_GLIBC
+#if __GLIBC_PREREQ(2, 33)
 TSAN_INTERCEPTOR(int, fstat64, int fd, void *buf) {
-  SCOPED_TSAN_INTERCEPTOR(__fxstat64, 0, fd, buf);
+  SCOPED_TSAN_INTERCEPTOR(fstat64, fd, buf);
   if (fd > 0)
     FdAccess(thr, pc, fd);
-  return REAL(__fxstat64)(0, fd, buf);
+  return REAL(fstat64)(fd, buf);
 }
-#define TSAN_MAYBE_INTERCEPT_FSTAT64 TSAN_INTERCEPT(fstat64)
+#  define TSAN_MAYBE_INTERCEPT_FSTAT64 TSAN_INTERCEPT(fstat64)
 #else
-#define TSAN_MAYBE_INTERCEPT_FSTAT64
+#  define TSAN_MAYBE_INTERCEPT_FSTAT64
 #endif
 
 TSAN_INTERCEPTOR(int, open, const char *name, int oflag, ...) {
@@ -2950,10 +2944,9 @@ void InitializeInterceptors() {
 
   TSAN_INTERCEPT(pthread_once);
 
-  TSAN_INTERCEPT(fstat);
   TSAN_MAYBE_INTERCEPT___FXSTAT;
+  TSAN_MAYBE_INTERCEPT_FSTAT;
   TSAN_MAYBE_INTERCEPT_FSTAT64;
-  TSAN_MAYBE_INTERCEPT___FXSTAT64;
   TSAN_INTERCEPT(open);
   TSAN_MAYBE_INTERCEPT_OPEN64;
   TSAN_INTERCEPT(creat);
diff --git a/contrib/llvm-project/libcxx/include/__availability b/contrib/llvm-project/libcxx/include/__availability
index c5069a027750..b8b2da9bb122 100644
--- a/contrib/llvm-project/libcxx/include/__availability
+++ b/contrib/llvm-project/libcxx/include/__availability
@@ -72,11 +72,10 @@
 #  endif
 #endif
 
-// Availability markup is disabled when building the library, or when the compiler
+// Availability markup is disabled when building the library, or when a non-Clang
+// compiler is used because only Clang supports the necessary attributes.
 // doesn't support the proper attributes.
-#if defined(_LIBCPP_BUILDING_LIBRARY) || defined(_LIBCXXABI_BUILDING_LIBRARY) ||                                       \
-    !__has_feature(attribute_availability_with_strict) || !__has_feature(attribute_availability_in_templates) ||       \
-    !__has_extension(pragma_clang_attribute_external_declaration)
+#if defined(_LIBCPP_BUILDING_LIBRARY) || defined(_LIBCXXABI_BUILDING_LIBRARY) || !defined(_LIBCPP_COMPILER_CLANG_BASED)
 #  if !defined(_LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS)
 #    define _LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS
 #  endif
diff --git a/contrib/llvm-project/libcxx/modules/modules.json.in b/contrib/llvm-project/libcxx/modules/modules.json.in
index ddc377f28f91..759ac92d81f1 100644
--- a/contrib/llvm-project/libcxx/modules/modules.json.in
+++ b/contrib/llvm-project/libcxx/modules/modules.json.in
@@ -5,7 +5,7 @@
     {
       "logical-name": "std",
       "source-path": "@LIBCXX_MODULE_RELATIVE_PATH@/std.cppm",
-      "is-standard-library": true,
+      "is-std-library": true,
       "local-arguments": {
         "system-include-directories": [
           "@LIBCXX_MODULE_RELATIVE_PATH@"
diff --git a/contrib/llvm-project/lld/COFF/DLL.cpp b/contrib/llvm-project/lld/COFF/DLL.cpp
index 6b516d8c6d5e..c4388ba9e40d 100644
--- a/contrib/llvm-project/lld/COFF/DLL.cpp
+++ b/contrib/llvm-project/lld/COFF/DLL.cpp
@@ -172,7 +172,7 @@ binImports(COFFLinkerContext &ctx,
 // A chunk for the delay import descriptor table etnry.
 class DelayDirectoryChunk : public NonSectionChunk {
 public:
-  explicit DelayDirectoryChunk(Chunk *n) : dllName(n) {}
+  explicit DelayDirectoryChunk(Chunk *n) : dllName(n) { setAlignment(4); }
 
   size_t getSize() const override {
     return sizeof(delay_import_directory_table_entry);
diff --git a/contrib/llvm-project/lld/ELF/Arch/LoongArch.cpp b/contrib/llvm-project/lld/ELF/Arch/LoongArch.cpp
index 05fd38fb753f..464f5dfb320c 100644
--- a/contrib/llvm-project/lld/ELF/Arch/LoongArch.cpp
+++ b/contrib/llvm-project/lld/ELF/Arch/LoongArch.cpp
@@ -11,6 +11,7 @@
 #include "Symbols.h"
 #include "SyntheticSections.h"
 #include "Target.h"
+#include "llvm/Support/LEB128.h"
 
 using namespace llvm;
 using namespace llvm::object;
@@ -41,6 +42,7 @@ public:
 };
 } // end anonymous namespace
 
+namespace {
 enum Op {
   SUB_W = 0x00110000,
   SUB_D = 0x00118000,
@@ -65,6 +67,7 @@ enum Reg {
   R_T2 = 14,
   R_T3 = 15,
 };
+} // namespace
 
 // Mask out the input's lowest 12 bits for use with `pcalau12i`, in sequences
 // like `pcalau12i + addi.[wd]` or `pcalau12i + {ld,st}.*` where the `pcalau12i`
@@ -153,6 +156,17 @@ static bool isJirl(uint32_t insn) {
   return (insn & 0xfc000000) == JIRL;
 }
 
+static void handleUleb128(uint8_t *loc, uint64_t val) {
+  const uint32_t maxcount = 1 + 64 / 7;
+  uint32_t count;
+  const char *error = nullptr;
+  uint64_t orig = decodeULEB128(loc, &count, nullptr, &error);
+  if (count > maxcount || (count == maxcount && error))
+    errorOrWarn(getErrorLocation(loc) + "extra space for uleb128");
+  uint64_t mask = count < maxcount ? (1ULL << 7 * count) - 1 : -1ULL;
+  encodeULEB128((orig + val) & mask, loc, count);
+}
+
 LoongArch::LoongArch() {
   // The LoongArch ISA itself does not have a limit on page sizes. According to
   // the ISA manual, the PS (page size) field in MTLB entries and CSR.STLBPS is
@@ -394,11 +408,13 @@ RelExpr LoongArch::getRelExpr(const RelType type, const Symbol &s,
   case R_LARCH_ADD16:
   case R_LARCH_ADD32:
   case R_LARCH_ADD64:
+  case R_LARCH_ADD_ULEB128:
   case R_LARCH_SUB6:
   case R_LARCH_SUB8:
   case R_LARCH_SUB16:
   case R_LARCH_SUB32:
   case R_LARCH_SUB64:
+  case R_LARCH_SUB_ULEB128:
     // The LoongArch add/sub relocs behave like the RISCV counterparts; reuse
     // the RelExpr to avoid code duplication.
     return R_RISCV_ADD;
@@ -633,6 +649,9 @@ void LoongArch::relocate(uint8_t *loc, const Relocation &rel,
   case R_LARCH_ADD64:
     write64le(loc, read64le(loc) + val);
     return;
+  case R_LARCH_ADD_ULEB128:
+    handleUleb128(loc, val);
+    return;
   case R_LARCH_SUB6:
     *loc = (*loc & 0xc0) | ((*loc - val) & 0x3f);
     return;
@@ -648,6 +667,9 @@ void LoongArch::relocate(uint8_t *loc, const Relocation &rel,
   case R_LARCH_SUB64:
     write64le(loc, read64le(loc) - val);
     return;
+  case R_LARCH_SUB_ULEB128:
+    handleUleb128(loc, -val);
+    return;
 
   case R_LARCH_MARK_LA:
   case R_LARCH_MARK_PCREL:
diff --git a/contrib/llvm-project/lld/ELF/Arch/PPC64.cpp b/contrib/llvm-project/lld/ELF/Arch/PPC64.cpp
index de52f6a79a40..019c073bd541 100644
--- a/contrib/llvm-project/lld/ELF/Arch/PPC64.cpp
+++ b/contrib/llvm-project/lld/ELF/Arch/PPC64.cpp
@@ -26,6 +26,7 @@ using namespace lld::elf;
 constexpr uint64_t ppc64TocOffset = 0x8000;
 constexpr uint64_t dynamicThreadPointerOffset = 0x8000;
 
+namespace {
 // The instruction encoding of bits 21-30 from the ISA for the Xform and Dform
 // instructions that can be used as part of the initial exec TLS sequence.
 enum XFormOpcd {
@@ -139,6 +140,7 @@ enum class PPCPrefixedInsn : uint64_t {
   PSTXV = PREFIX_8LS | 0xd8000000,
   PSTXVP = PREFIX_8LS | 0xf8000000
 };
+
 static bool checkPPCLegacyInsn(uint32_t encoding) {
   PPCLegacyInsn insn = static_cast<PPCLegacyInsn>(encoding);
   if (insn == PPCLegacyInsn::NOINSN)
@@ -164,7 +166,6 @@ enum class LegacyToPrefixMask : uint64_t {
       0x8000000003e00000, // S/T (6-10) - The [S/T]X bit moves from 28 to 5.
 };
 
-namespace {
 class PPC64 final : public TargetInfo {
 public:
   PPC64();
diff --git a/contrib/llvm-project/lld/ELF/Arch/RISCV.cpp b/contrib/llvm-project/lld/ELF/Arch/RISCV.cpp
index 5fcab4d39d43..4798c86f7d1b 100644
--- a/contrib/llvm-project/lld/ELF/Arch/RISCV.cpp
+++ b/contrib/llvm-project/lld/ELF/Arch/RISCV.cpp
@@ -57,6 +57,7 @@ public:
 
 const uint64_t dtpOffset = 0x800;
 
+namespace {
 enum Op {
   ADDI = 0x13,
   AUIPC = 0x17,
@@ -78,6 +79,7 @@ enum Reg {
   X_A0 = 10,
   X_T3 = 28,
 };
+} // namespace
 
 static uint32_t hi20(uint32_t val) { return (val + 0x800) >> 12; }
 static uint32_t lo12(uint32_t val) { return val & 4095; }
diff --git a/contrib/llvm-project/lld/ELF/Arch/X86_64.cpp b/contrib/llvm-project/lld/ELF/Arch/X86_64.cpp
index de459013595f..a85bf3aa0c09 100644
--- a/contrib/llvm-project/lld/ELF/Arch/X86_64.cpp
+++ b/contrib/llvm-project/lld/ELF/Arch/X86_64.cpp
@@ -328,9 +328,10 @@ bool X86_64::relaxOnce(int pass) const {
         if (rel.expr != R_RELAX_GOT_PC)
           continue;
 
-        uint64_t v = sec->getRelocTargetVA(
-            sec->file, rel.type, rel.addend,
-            sec->getOutputSection()->addr + rel.offset, *rel.sym, rel.expr);
+        uint64_t v = sec->getRelocTargetVA(sec->file, rel.type, rel.addend,
+                                           sec->getOutputSection()->addr +
+                                               sec->outSecOff + rel.offset,
+                                           *rel.sym, rel.expr);
         if (isInt<32>(v))
           continue;
         if (rel.sym->auxIdx == 0) {
diff --git a/contrib/llvm-project/lld/ELF/Writer.cpp b/contrib/llvm-project/lld/ELF/Writer.cpp
index 6df43a34be01..8a08b0fcc90d 100644
--- a/contrib/llvm-project/lld/ELF/Writer.cpp
+++ b/contrib/llvm-project/lld/ELF/Writer.cpp
@@ -261,6 +261,9 @@ static void demoteDefined(Defined &sym, DenseMap<SectionBase *, size_t> &map) {
   Undefined(sym.file, sym.getName(), binding, sym.stOther, sym.type,
             /*discardedSecIdx=*/map.lookup(sym.section))
       .overwrite(sym);
+  // Eliminate from the symbol table, otherwise we would leave an undefined
+  // symbol if the symbol is unreferenced in the absence of GC.
+  sym.isUsedInRegularObj = false;
 }
 
 // If all references to a DSO happen to be weak, the DSO is not added to
diff --git a/contrib/llvm-project/lld/docs/ReleaseNotes.rst b/contrib/llvm-project/lld/docs/ReleaseNotes.rst
index 56ba3463aead..6ada711a20a6 100644
--- a/contrib/llvm-project/lld/docs/ReleaseNotes.rst
+++ b/contrib/llvm-project/lld/docs/ReleaseNotes.rst
@@ -163,5 +163,10 @@ WebAssembly Improvements
   is read from object files within the archive.  This matches the behaviour of
   the ELF linker.
 
+SystemZ
+-------
+
+* Add target support for SystemZ (s390x).
+
 Fixes
 #####
diff --git a/contrib/llvm-project/llvm/include/llvm/Analysis/VectorUtils.h b/contrib/llvm-project/llvm/include/llvm/Analysis/VectorUtils.h
index 7a92e62b53c5..c6eb66cc9660 100644
--- a/contrib/llvm-project/llvm/include/llvm/Analysis/VectorUtils.h
+++ b/contrib/llvm-project/llvm/include/llvm/Analysis/VectorUtils.h
@@ -406,6 +406,11 @@ bool maskIsAllZeroOrUndef(Value *Mask);
 /// lanes can be assumed active.
 bool maskIsAllOneOrUndef(Value *Mask);
 
+/// Given a mask vector of i1, Return true if any of the elements of this
+/// predicate mask are known to be true or undef.  That is, return true if at
+/// least one lane can be assumed active.
+bool maskContainsAllOneOrUndef(Value *Mask);
+
 /// Given a mask vector of the form <Y x i1>, return an APInt (of bitwidth Y)
 /// for each lane which may be active.
 APInt possiblyDemandedEltsInMask(Value *Mask);
diff --git a/contrib/llvm-project/llvm/include/llvm/BinaryFormat/COFF.h b/contrib/llvm-project/llvm/include/llvm/BinaryFormat/COFF.h
index 522ee37da6e8..72461d0d9c31 100644
--- a/contrib/llvm-project/llvm/include/llvm/BinaryFormat/COFF.h
+++ b/contrib/llvm-project/llvm/include/llvm/BinaryFormat/COFF.h
@@ -716,7 +716,10 @@ enum ImportNameType : unsigned {
   IMPORT_NAME_NOPREFIX = 2,
   /// The import name is the public symbol name, but skipping the leading ?,
   /// @, or optionally _, and truncating at the first @.
-  IMPORT_NAME_UNDECORATE = 3
+  IMPORT_NAME_UNDECORATE = 3,
+  /// The import name is specified as a separate string in the import library
+  /// object file.
+  IMPORT_NAME_EXPORTAS = 4
 };
 
 enum class GuardFlags : uint32_t {
diff --git a/contrib/llvm-project/llvm/include/llvm/Object/COFF.h b/contrib/llvm-project/llvm/include/llvm/Object/COFF.h
index a548b2c15c5f..2a5c3d8913b1 100644
--- a/contrib/llvm-project/llvm/include/llvm/Object/COFF.h
+++ b/contrib/llvm-project/llvm/include/llvm/Object/COFF.h
@@ -1362,6 +1362,47 @@ public:
   SectionStrippedError() { setErrorCode(object_error::section_stripped); }
 };
 
+inline std::optional<std::string>
+getArm64ECMangledFunctionName(StringRef Name) {
+  bool IsCppFn = Name[0] == '?';
+  if (IsCppFn && Name.find("$$h") != std::string::npos)
+    return std::nullopt;
+  if (!IsCppFn && Name[0] == '#')
+    return std::nullopt;
+
+  StringRef Prefix = "$$h";
+  size_t InsertIdx = 0;
+  if (IsCppFn) {
+    InsertIdx = Name.find("@@");
+    size_t ThreeAtSignsIdx = Name.find("@@@");
+    if (InsertIdx != std::string::npos && InsertIdx != ThreeAtSignsIdx) {
+      InsertIdx += 2;
+    } else {
+      InsertIdx = Name.find("@");
+      if (InsertIdx != std::string::npos)
+        InsertIdx++;
+    }
+  } else {
+    Prefix = "#";
+  }
+
+  return std::optional<std::string>(
+      (Name.substr(0, InsertIdx) + Prefix + Name.substr(InsertIdx)).str());
+}
+
+inline std::optional<std::string>
+getArm64ECDemangledFunctionName(StringRef Name) {
+  if (Name[0] == '#')
+    return std::string(Name.substr(1));
+  if (Name[0] != '?')
+    return std::nullopt;
+
+  std::pair<StringRef, StringRef> Pair = Name.split("$$h");
+  if (Pair.second.empty())
+    return std::nullopt;
+  return (Pair.first + Pair.second).str();
+}
+
 } // end namespace object
 
 } // end namespace llvm
diff --git a/contrib/llvm-project/llvm/include/llvm/Object/COFFImportFile.h b/contrib/llvm-project/llvm/include/llvm/Object/COFFImportFile.h
index edc836ff0348..8358197309f0 100644
--- a/contrib/llvm-project/llvm/include/llvm/Object/COFFImportFile.h
+++ b/contrib/llvm-project/llvm/include/llvm/Object/COFFImportFile.h
@@ -26,7 +26,16 @@
 namespace llvm {
 namespace object {
 
+constexpr std::string_view ImportDescriptorPrefix = "__IMPORT_DESCRIPTOR_";
+constexpr std::string_view NullImportDescriptorSymbolName =
+    "__NULL_IMPORT_DESCRIPTOR";
+constexpr std::string_view NullThunkDataPrefix = "\x7f";
+constexpr std::string_view NullThunkDataSuffix = "_NULL_THUNK_DATA";
+
 class COFFImportFile : public SymbolicFile {
+private:
+  enum SymbolIndex { ImpSymbol, ThunkSymbol, ECAuxSymbol, ECThunkSymbol };
+
 public:
   COFFImportFile(MemoryBufferRef Source)
       : SymbolicFile(ID_COFFImportFile, Source) {}
@@ -36,9 +45,23 @@ public:
   void moveSymbolNext(DataRefImpl &Symb) const override { ++Symb.p; }
 
   Error printSymbolName(raw_ostream &OS, DataRefImpl Symb) const override {
-    if (Symb.p == 0)
+    switch (Symb.p) {
+    case ImpSymbol:
       OS << "__imp_";
-    OS << StringRef(Data.getBufferStart() + sizeof(coff_import_header));
+      break;
+    case ECAuxSymbol:
+      OS << "__imp_aux_";
+      break;
+    }
+    const char *Name = Data.getBufferStart() + sizeof(coff_import_header);
+    if (Symb.p != ECThunkSymbol && COFF::isArm64EC(getMachine())) {
+      if (std::optional<std::string> DemangledName =
+              getArm64ECDemangledFunctionName(Name)) {
+        OS << StringRef(*DemangledName);
+        return Error::success();
+      }
+    }
+    OS << StringRef(Name);
     return Error::success();
   }
 
@@ -52,7 +75,12 @@ public:
 
   basic_symbol_iterator symbol_end() const override {
     DataRefImpl Symb;
-    Symb.p = isData() ? 1 : 2;
+    if (isData())
+      Symb.p = ImpSymbol + 1;
+    else if (COFF::isArm64EC(getMachine()))
+      Symb.p = ECThunkSymbol + 1;
+    else
+      Symb.p = ThunkSymbol + 1;
     return BasicSymbolRef(Symb, this);
   }
 
@@ -66,6 +94,7 @@ public:
   uint16_t getMachine() const { return getCOFFImportHeader()->Machine; }
 
   StringRef getFileFormatName() const;
+  StringRef getExportName() const;
 
 private:
   bool isData() const {
diff --git a/contrib/llvm-project/llvm/include/llvm/Support/FormattedStream.h b/contrib/llvm-project/llvm/include/llvm/Support/FormattedStream.h
index 5f937cfa7984..850a18dbb941 100644
--- a/contrib/llvm-project/llvm/include/llvm/Support/FormattedStream.h
+++ b/contrib/llvm-project/llvm/include/llvm/Support/FormattedStream.h
@@ -52,6 +52,10 @@ class formatted_raw_ostream : public raw_ostream {
   /// have the rest of it.
   SmallString<4> PartialUTF8Char;
 
+  /// DisableScan - Temporarily disable scanning of output. Used to ignore color
+  /// codes.
+  bool DisableScan;
+
   void write_impl(const char *Ptr, size_t Size) override;
 
   /// current_pos - Return the current position within the stream,
@@ -89,9 +93,33 @@ class formatted_raw_ostream : public raw_ostream {
       SetUnbuffered();
     TheStream->SetUnbuffered();
 
+    enable_colors(TheStream->colors_enabled());
+
     Scanned = nullptr;
   }
 
+  void PreDisableScan() {
+    assert(!DisableScan);
+    ComputePosition(getBufferStart(), GetNumBytesInBuffer());
+    assert(PartialUTF8Char.empty());
+    DisableScan = true;
+  }
+
+  void PostDisableScan() {
+    assert(DisableScan);
+    DisableScan = false;
+    Scanned = getBufferStart() + GetNumBytesInBuffer();
+  }
+
+  struct DisableScanScope {
+    formatted_raw_ostream *S;
+
+    DisableScanScope(formatted_raw_ostream *FRO) : S(FRO) {
+      S->PreDisableScan();
+    }
+    ~DisableScanScope() { S->PostDisableScan(); }
+  };
+
 public:
   /// formatted_raw_ostream - Open the specified file for
   /// writing. If an error occurs, information about the error is
@@ -104,12 +132,12 @@ public:
   /// underneath it.
   ///
   formatted_raw_ostream(raw_ostream &Stream)
-      : TheStream(nullptr), Position(0, 0) {
+      : TheStream(nullptr), Position(0, 0), DisableScan(false) {
     setStream(Stream);
   }
-  explicit formatted_raw_ostream() : TheStream(nullptr), Position(0, 0) {
-    Scanned = nullptr;
-  }
+  explicit formatted_raw_ostream()
+      : TheStream(nullptr), Position(0, 0), Scanned(nullptr),
+        DisableScan(false) {}
 
   ~formatted_raw_ostream() override {
     flush();
@@ -136,17 +164,26 @@ public:
   }
 
   raw_ostream &resetColor() override {
-    TheStream->resetColor();
+    if (colors_enabled()) {
+      DisableScanScope S(this);
+      raw_ostream::resetColor();
+    }
     return *this;
   }
 
   raw_ostream &reverseColor() override {
-    TheStream->reverseColor();
+    if (colors_enabled()) {
+      DisableScanScope S(this);
+      raw_ostream::reverseColor();
+    }
     return *this;
   }
 
   raw_ostream &changeColor(enum Colors Color, bool Bold, bool BG) override {
-    TheStream->changeColor(Color, Bold, BG);
+    if (colors_enabled()) {
+      DisableScanScope S(this);
+      raw_ostream::changeColor(Color, Bold, BG);
+    }
     return *this;
   }
 
diff --git a/contrib/llvm-project/llvm/include/llvm/Target/TargetSchedule.td b/contrib/llvm-project/llvm/include/llvm/Target/TargetSchedule.td
index 032de7285178..40c2cce8c6ef 100644
--- a/contrib/llvm-project/llvm/include/llvm/Target/TargetSchedule.td
+++ b/contrib/llvm-project/llvm/include/llvm/Target/TargetSchedule.td
@@ -620,7 +620,7 @@ class SecondFusionPredicateWithMCInstPredicate<MCInstPredicate pred>
   : FusionPredicateWithMCInstPredicate<second_fusion_target, pred>;
 // The pred will be applied on both firstMI and secondMI.
 class BothFusionPredicateWithMCInstPredicate<MCInstPredicate pred>
-  : FusionPredicateWithMCInstPredicate<second_fusion_target, pred>;
+  : FusionPredicateWithMCInstPredicate<both_fusion_target, pred>;
 
 // Tie firstOpIdx and secondOpIdx. The operand of `FirstMI` at position
 // `firstOpIdx` should be the same as the operand of `SecondMI` at position
diff --git a/contrib/llvm-project/llvm/lib/Analysis/ValueTracking.cpp b/contrib/llvm-project/llvm/lib/Analysis/ValueTracking.cpp
index 412115eb649c..9f9451e4e814 100644
--- a/contrib/llvm-project/llvm/lib/Analysis/ValueTracking.cpp
+++ b/contrib/llvm-project/llvm/lib/Analysis/ValueTracking.cpp
@@ -5986,6 +5986,8 @@ void llvm::getUnderlyingObjects(const Value *V,
       if (!LI || !LI->isLoopHeader(PN->getParent()) ||
           isSameUnderlyingObjectInLoop(PN, LI))
         append_range(Worklist, PN->incoming_values());
+      else
+        Objects.push_back(P);
       continue;
     }
 
diff --git a/contrib/llvm-project/llvm/lib/Analysis/VectorUtils.cpp b/contrib/llvm-project/llvm/lib/Analysis/VectorUtils.cpp
index 73facc76a92b..bf7bc0ba84a0 100644
--- a/contrib/llvm-project/llvm/lib/Analysis/VectorUtils.cpp
+++ b/contrib/llvm-project/llvm/lib/Analysis/VectorUtils.cpp
@@ -1012,6 +1012,31 @@ bool llvm::maskIsAllOneOrUndef(Value *Mask) {
   return true;
 }
 
+bool llvm::maskContainsAllOneOrUndef(Value *Mask) {
+  assert(isa<VectorType>(Mask->getType()) &&
+         isa<IntegerType>(Mask->getType()->getScalarType()) &&
+         cast<IntegerType>(Mask->getType()->getScalarType())->getBitWidth() ==
+             1 &&
+         "Mask must be a vector of i1");
+
+  auto *ConstMask = dyn_cast<Constant>(Mask);
+  if (!ConstMask)
+    return false;
+  if (ConstMask->isAllOnesValue() || isa<UndefValue>(ConstMask))
+    return true;
+  if (isa<ScalableVectorType>(ConstMask->getType()))
+    return false;
+  for (unsigned
+           I = 0,
+           E = cast<FixedVectorType>(ConstMask->getType())->getNumElements();
+       I != E; ++I) {
+    if (auto *MaskElt = ConstMask->getAggregateElement(I))
+      if (MaskElt->isAllOnesValue() || isa<UndefValue>(MaskElt))
+        return true;
+  }
+  return false;
+}
+
 /// TODO: This is a lot like known bits, but for
 /// vectors.  Is there something we can common this with?
 APInt llvm::possiblyDemandedEltsInMask(Value *Mask) {
diff --git a/contrib/llvm-project/llvm/lib/MC/MCParser/AsmParser.cpp b/contrib/llvm-project/llvm/lib/MC/MCParser/AsmParser.cpp
index 8e508dbdb1c6..026d252ec5bc 100644
--- a/contrib/llvm-project/llvm/lib/MC/MCParser/AsmParser.cpp
+++ b/contrib/llvm-project/llvm/lib/MC/MCParser/AsmParser.cpp
@@ -44,6 +44,7 @@
 #include "llvm/MC/MCSection.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSymbol.h"
+#include "llvm/MC/MCSymbolMachO.h"
 #include "llvm/MC/MCTargetOptions.h"
 #include "llvm/MC/MCValue.h"
 #include "llvm/Support/Casting.h"
@@ -1950,7 +1951,8 @@ bool AsmParser::parseStatement(ParseStatementInfo &Info,
       Lex();
     }
 
-    if (MAI.hasSubsectionsViaSymbols() && CFIStartProcLoc && Sym->isExternal())
+    if (MAI.hasSubsectionsViaSymbols() && CFIStartProcLoc &&
+        Sym->isExternal() && !cast<MCSymbolMachO>(Sym)->isAltEntry())
       return Error(StartTokLoc, "non-private labels cannot appear between "
                                 ".cfi_startproc / .cfi_endproc pairs") &&
              Error(*CFIStartProcLoc, "previous .cfi_startproc was here");
diff --git a/contrib/llvm-project/llvm/lib/Object/ArchiveWriter.cpp b/contrib/llvm-project/llvm/lib/Object/ArchiveWriter.cpp
index 155926a8c594..1a7ed2db5439 100644
--- a/contrib/llvm-project/llvm/lib/Object/ArchiveWriter.cpp
+++ b/contrib/llvm-project/llvm/lib/Object/ArchiveWriter.cpp
@@ -677,6 +677,13 @@ static bool isECObject(object::SymbolicFile &Obj) {
   return false;
 }
 
+bool isImportDescriptor(StringRef Name) {
+  return Name.starts_with(ImportDescriptorPrefix) ||
+         Name == StringRef{NullImportDescriptorSymbolName} ||
+         (Name.starts_with(NullThunkDataPrefix) &&
+          Name.ends_with(NullThunkDataSuffix));
+}
+
 static Expected<std::vector<unsigned>> getSymbols(SymbolicFile *Obj,
                                                   uint16_t Index,
                                                   raw_ostream &SymNames,
@@ -704,6 +711,10 @@ static Expected<std::vector<unsigned>> getSymbols(SymbolicFile *Obj,
       if (Map == &SymMap->Map) {
         Ret.push_back(SymNames.tell());
         SymNames << Name << '\0';
+        // If EC is enabled, then the import descriptors are NOT put into EC
+        // objects so we need to copy them to the EC map manually.
+        if (SymMap->UseECMap && isImportDescriptor(Name))
+          SymMap->ECMap[Name] = Index;
       }
     } else {
       Ret.push_back(SymNames.tell());
diff --git a/contrib/llvm-project/llvm/lib/Object/COFFImportFile.cpp b/contrib/llvm-project/llvm/lib/Object/COFFImportFile.cpp
index 60556c149bf7..d3b5cf2d9f7b 100644
--- a/contrib/llvm-project/llvm/lib/Object/COFFImportFile.cpp
+++ b/contrib/llvm-project/llvm/lib/Object/COFFImportFile.cpp
@@ -52,6 +52,38 @@ StringRef COFFImportFile::getFileFormatName() const {
   }
 }
 
+StringRef COFFImportFile::getExportName() const {
+  const coff_import_header *hdr = getCOFFImportHeader();
+  StringRef name = Data.getBuffer().substr(sizeof(*hdr)).split('\0').first;
+
+  auto ltrim1 = [](StringRef s, StringRef chars) {
+    return !s.empty() && chars.contains(s[0]) ? s.substr(1) : s;
+  };
+
+  switch (hdr->getNameType()) {
+  case IMPORT_ORDINAL:
+    name = "";
+    break;
+  case IMPORT_NAME_NOPREFIX:
+    name = ltrim1(name, "?@_");
+    break;
+  case IMPORT_NAME_UNDECORATE:
+    name = ltrim1(name, "?@_");
+    name = name.substr(0, name.find('@'));
+    break;
+  case IMPORT_NAME_EXPORTAS: {
+    // Skip DLL name
+    name = Data.getBuffer().substr(sizeof(*hdr) + name.size() + 1);
+    name = name.split('\0').second.split('\0').first;
+    break;
+  }
+  default:
+    break;
+  }
+
+  return name;
+}
+
 static uint16_t getImgRelRelocation(MachineTypes Machine) {
   switch (Machine) {
   default:
@@ -76,7 +108,7 @@ template <class T> static void append(std::vector<uint8_t> &B, const T &Data) {
 }
 
 static void writeStringTable(std::vector<uint8_t> &B,
-                             ArrayRef<const std::string> Strings) {
+                             ArrayRef<const std::string_view> Strings) {
   // The COFF string table consists of a 4-byte value which is the size of the
   // table, including the length field itself.  This value is followed by the
   // string content itself, which is an array of null-terminated C-style
@@ -139,9 +171,6 @@ static Expected<std::string> replace(StringRef S, StringRef From,
   return (Twine(S.substr(0, Pos)) + To + S.substr(Pos + From.size())).str();
 }
 
-static const std::string NullImportDescriptorSymbolName =
-    "__NULL_IMPORT_DESCRIPTOR";
-
 namespace {
 // This class constructs various small object files necessary to support linking
 // symbols imported from a DLL.  The contents are pretty strictly defined and
@@ -160,8 +189,9 @@ class ObjectFactory {
 public:
   ObjectFactory(StringRef S, MachineTypes M)
       : NativeMachine(M), ImportName(S), Library(llvm::sys::path::stem(S)),
-        ImportDescriptorSymbolName(("__IMPORT_DESCRIPTOR_" + Library).str()),
-        NullThunkSymbolName(("\x7f" + Library + "_NULL_THUNK_DATA").str()) {}
+        ImportDescriptorSymbolName((ImportDescriptorPrefix + Library).str()),
+        NullThunkSymbolName(
+            (NullThunkDataPrefix + Library + NullThunkDataSuffix).str()) {}
 
   // Creates an Import Descriptor.  This is a small object file which contains a
   // reference to the terminators and contains the library name (entry) for the
@@ -183,6 +213,7 @@ public:
   // Library Format.
   NewArchiveMember createShortImport(StringRef Sym, uint16_t Ordinal,
                                      ImportType Type, ImportNameType NameType,
+                                     StringRef ExportName,
                                      MachineTypes Machine);
 
   // Create a weak external file which is described in PE/COFF Aux Format 3.
@@ -474,12 +505,13 @@ NewArchiveMember ObjectFactory::createNullThunk(std::vector<uint8_t> &Buffer) {
   return {MemoryBufferRef{F, ImportName}};
 }
 
-NewArchiveMember ObjectFactory::createShortImport(StringRef Sym,
-                                                  uint16_t Ordinal,
-                                                  ImportType ImportType,
-                                                  ImportNameType NameType,
-                                                  MachineTypes Machine) {
+NewArchiveMember
+ObjectFactory::createShortImport(StringRef Sym, uint16_t Ordinal,
+                                 ImportType ImportType, ImportNameType NameType,
+                                 StringRef ExportName, MachineTypes Machine) {
   size_t ImpSize = ImportName.size() + Sym.size() + 2; // +2 for NULs
+  if (!ExportName.empty())
+    ImpSize += ExportName.size() + 1;
   size_t Size = sizeof(coff_import_header) + ImpSize;
   char *Buf = Alloc.Allocate<char>(Size);
   memset(Buf, 0, Size);
@@ -499,6 +531,10 @@ NewArchiveMember ObjectFactory::createShortImport(StringRef Sym,
   memcpy(P, Sym.data(), Sym.size());
   P += Sym.size() + 1;
   memcpy(P, ImportName.data(), ImportName.size());
+  if (!ExportName.empty()) {
+    P += ImportName.size() + 1;
+    memcpy(P, ExportName.data(), ExportName.size());
+  }
 
   return {MemoryBufferRef(StringRef(Buf, Size), ImportName)};
 }
@@ -615,27 +651,51 @@ Error writeImportLibrary(StringRef ImportName, StringRef Path,
       ImportType = IMPORT_CONST;
 
     StringRef SymbolName = E.SymbolName.empty() ? E.Name : E.SymbolName;
-    ImportNameType NameType = E.Noname
-                                  ? IMPORT_ORDINAL
-                                  : getNameType(SymbolName, E.Name,
-                                                Machine, MinGW);
-    Expected<std::string> Name = E.ExtName.empty()
-                                     ? std::string(SymbolName)
-                                     : replace(SymbolName, E.Name, E.ExtName);
-
-    if (!Name)
-      return Name.takeError();
-
-    if (!E.AliasTarget.empty() && *Name != E.AliasTarget) {
+    std::string Name;
+
+    if (E.ExtName.empty()) {
+      Name = std::string(SymbolName);
+    } else {
+      Expected<std::string> ReplacedName =
+          replace(SymbolName, E.Name, E.ExtName);
+      if (!ReplacedName)
+        return ReplacedName.takeError();
+      Name.swap(*ReplacedName);
+    }
+
+    if (!E.AliasTarget.empty() && Name != E.AliasTarget) {
       Members.push_back(
-          OF.createWeakExternal(E.AliasTarget, *Name, false, Machine));
+          OF.createWeakExternal(E.AliasTarget, Name, false, Machine));
       Members.push_back(
-          OF.createWeakExternal(E.AliasTarget, *Name, true, Machine));
+          OF.createWeakExternal(E.AliasTarget, Name, true, Machine));
       continue;
     }
 
-    Members.push_back(
-        OF.createShortImport(*Name, E.Ordinal, ImportType, NameType, Machine));
+    ImportNameType NameType;
+    std::string ExportName;
+    if (E.Noname) {
+      NameType = IMPORT_ORDINAL;
+    } else {
+      NameType = getNameType(SymbolName, E.Name, Machine, MinGW);
+    }
+
+    // On ARM64EC, use EXPORTAS to import demangled name for mangled symbols.
+    if (ImportType == IMPORT_CODE && isArm64EC(Machine)) {
+      if (std::optional<std::string> MangledName =
+              getArm64ECMangledFunctionName(Name)) {
+        if (ExportName.empty()) {
+          NameType = IMPORT_NAME_EXPORTAS;
+          ExportName.swap(Name);
+        }
+        Name = std::move(*MangledName);
+      } else if (ExportName.empty()) {
+        NameType = IMPORT_NAME_EXPORTAS;
+        ExportName = std::move(*getArm64ECDemangledFunctionName(Name));
+      }
+    }
+
+    Members.push_back(OF.createShortImport(Name, E.Ordinal, ImportType,
+                                           NameType, ExportName, Machine));
   }
 
   return writeArchive(Path, Members, SymtabWritingMode::NormalSymtab,
diff --git a/contrib/llvm-project/llvm/lib/Support/FormattedStream.cpp b/contrib/llvm-project/llvm/lib/Support/FormattedStream.cpp
index c0d284350995..c50530e76efc 100644
--- a/contrib/llvm-project/llvm/lib/Support/FormattedStream.cpp
+++ b/contrib/llvm-project/llvm/lib/Support/FormattedStream.cpp
@@ -94,6 +94,9 @@ void formatted_raw_ostream::UpdatePosition(const char *Ptr, size_t Size) {
 /// ComputePosition - Examine the current output and update line and column
 /// counts.
 void formatted_raw_ostream::ComputePosition(const char *Ptr, size_t Size) {
+  if (DisableScan)
+    return;
+
   // If our previous scan pointer is inside the buffer, assume we already
   // scanned those bytes. This depends on raw_ostream to not change our buffer
   // in unexpected ways.
diff --git a/contrib/llvm-project/llvm/lib/Target/AArch64/AArch64Arm64ECCallLowering.cpp b/contrib/llvm-project/llvm/lib/Target/AArch64/AArch64Arm64ECCallLowering.cpp
index 11248bb7aef3..55c5bbc66a3f 100644
--- a/contrib/llvm-project/llvm/lib/Target/AArch64/AArch64Arm64ECCallLowering.cpp
+++ b/contrib/llvm-project/llvm/lib/Target/AArch64/AArch64Arm64ECCallLowering.cpp
@@ -24,11 +24,13 @@
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/Instruction.h"
 #include "llvm/InitializePasses.h"
+#include "llvm/Object/COFF.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/TargetParser/Triple.h"
 
 using namespace llvm;
+using namespace llvm::object;
 
 using OperandBundleDef = OperandBundleDefT<Value *>;
 
@@ -43,6 +45,8 @@ static cl::opt<bool> GenerateThunks("arm64ec-generate-thunks", cl::Hidden,
 
 namespace {
 
+enum class ThunkType { GuestExit, Entry, Exit };
+
 class AArch64Arm64ECCallLowering : public ModulePass {
 public:
   static char ID;
@@ -69,14 +73,14 @@ private:
   Type *I64Ty;
   Type *VoidTy;
 
-  void getThunkType(FunctionType *FT, AttributeList AttrList, bool EntryThunk,
+  void getThunkType(FunctionType *FT, AttributeList AttrList, ThunkType TT,
                     raw_ostream &Out, FunctionType *&Arm64Ty,
                     FunctionType *&X64Ty);
   void getThunkRetType(FunctionType *FT, AttributeList AttrList,
                        raw_ostream &Out, Type *&Arm64RetTy, Type *&X64RetTy,
                        SmallVectorImpl<Type *> &Arm64ArgTypes,
                        SmallVectorImpl<Type *> &X64ArgTypes, bool &HasSretPtr);
-  void getThunkArgTypes(FunctionType *FT, AttributeList AttrList,
+  void getThunkArgTypes(FunctionType *FT, AttributeList AttrList, ThunkType TT,
                         raw_ostream &Out,
                         SmallVectorImpl<Type *> &Arm64ArgTypes,
                         SmallVectorImpl<Type *> &X64ArgTypes, bool HasSretPtr);
@@ -89,10 +93,11 @@ private:
 
 void AArch64Arm64ECCallLowering::getThunkType(FunctionType *FT,
                                               AttributeList AttrList,
-                                              bool EntryThunk, raw_ostream &Out,
+                                              ThunkType TT, raw_ostream &Out,
                                               FunctionType *&Arm64Ty,
                                               FunctionType *&X64Ty) {
-  Out << (EntryThunk ? "$ientry_thunk$cdecl$" : "$iexit_thunk$cdecl$");
+  Out << (TT == ThunkType::Entry ? "$ientry_thunk$cdecl$"
+                                 : "$iexit_thunk$cdecl$");
 
   Type *Arm64RetTy;
   Type *X64RetTy;
@@ -102,8 +107,8 @@ void AArch64Arm64ECCallLowering::getThunkType(FunctionType *FT,
 
   // The first argument to a thunk is the called function, stored in x9.
   // For exit thunks, we pass the called function down to the emulator;
-  // for entry thunks, we just call the Arm64 function directly.
-  if (!EntryThunk)
+  // for entry/guest exit thunks, we just call the Arm64 function directly.
+  if (TT == ThunkType::Exit)
     Arm64ArgTypes.push_back(PtrTy);
   X64ArgTypes.push_back(PtrTy);
 
@@ -111,14 +116,16 @@ void AArch64Arm64ECCallLowering::getThunkType(FunctionType *FT,
   getThunkRetType(FT, AttrList, Out, Arm64RetTy, X64RetTy, Arm64ArgTypes,
                   X64ArgTypes, HasSretPtr);
 
-  getThunkArgTypes(FT, AttrList, Out, Arm64ArgTypes, X64ArgTypes, HasSretPtr);
+  getThunkArgTypes(FT, AttrList, TT, Out, Arm64ArgTypes, X64ArgTypes,
+                   HasSretPtr);
 
   Arm64Ty = FunctionType::get(Arm64RetTy, Arm64ArgTypes, false);
+
   X64Ty = FunctionType::get(X64RetTy, X64ArgTypes, false);
 }
 
 void AArch64Arm64ECCallLowering::getThunkArgTypes(
-    FunctionType *FT, AttributeList AttrList, raw_ostream &Out,
+    FunctionType *FT, AttributeList AttrList, ThunkType TT, raw_ostream &Out,
     SmallVectorImpl<Type *> &Arm64ArgTypes,
     SmallVectorImpl<Type *> &X64ArgTypes, bool HasSretPtr) {
 
@@ -156,9 +163,11 @@ void AArch64Arm64ECCallLowering::getThunkArgTypes(
     X64ArgTypes.push_back(PtrTy);
     // x5
     Arm64ArgTypes.push_back(I64Ty);
-    // FIXME: x5 isn't actually passed/used by the x64 side; revisit once we
-    // have proper isel for varargs
-    X64ArgTypes.push_back(I64Ty);
+    if (TT != ThunkType::Entry) {
+      // FIXME: x5 isn't actually used by the x64 side; revisit once we
+      // have proper isel for varargs
+      X64ArgTypes.push_back(I64Ty);
+    }
     return;
   }
 
@@ -339,8 +348,7 @@ Function *AArch64Arm64ECCallLowering::buildExitThunk(FunctionType *FT,
   SmallString<256> ExitThunkName;
   llvm::raw_svector_ostream ExitThunkStream(ExitThunkName);
   FunctionType *Arm64Ty, *X64Ty;
-  getThunkType(FT, Attrs, /*EntryThunk*/ false, ExitThunkStream, Arm64Ty,
-               X64Ty);
+  getThunkType(FT, Attrs, ThunkType::Exit, ExitThunkStream, Arm64Ty, X64Ty);
   if (Function *F = M->getFunction(ExitThunkName))
     return F;
 
@@ -443,7 +451,7 @@ Function *AArch64Arm64ECCallLowering::buildEntryThunk(Function *F) {
   SmallString<256> EntryThunkName;
   llvm::raw_svector_ostream EntryThunkStream(EntryThunkName);
   FunctionType *Arm64Ty, *X64Ty;
-  getThunkType(F->getFunctionType(), F->getAttributes(), /*EntryThunk*/ true,
+  getThunkType(F->getFunctionType(), F->getAttributes(), ThunkType::Entry,
                EntryThunkStream, Arm64Ty, X64Ty);
   if (Function *F = M->getFunction(EntryThunkName))
     return F;
@@ -465,10 +473,11 @@ Function *AArch64Arm64ECCallLowering::buildEntryThunk(Function *F) {
 
   bool TransformDirectToSRet = X64RetType->isVoidTy() && !RetTy->isVoidTy();
   unsigned ThunkArgOffset = TransformDirectToSRet ? 2 : 1;
+  unsigned PassthroughArgSize = F->isVarArg() ? 5 : Thunk->arg_size();
 
   // Translate arguments to call.
   SmallVector<Value *> Args;
-  for (unsigned i = ThunkArgOffset, e = Thunk->arg_size(); i != e; ++i) {
+  for (unsigned i = ThunkArgOffset, e = PassthroughArgSize; i != e; ++i) {
     Value *Arg = Thunk->getArg(i);
     Type *ArgTy = Arm64Ty->getParamType(i - ThunkArgOffset);
     if (ArgTy->isArrayTy() || ArgTy->isStructTy() ||
@@ -485,6 +494,22 @@ Function *AArch64Arm64ECCallLowering::buildEntryThunk(Function *F) {
     Args.push_back(Arg);
   }
 
+  if (F->isVarArg()) {
+    // The 5th argument to variadic entry thunks is used to model the x64 sp
+    // which is passed to the thunk in x4, this can be passed to the callee as
+    // the variadic argument start address after skipping over the 32 byte
+    // shadow store.
+
+    // The EC thunk CC will assign any argument marked as InReg to x4.
+    Thunk->addParamAttr(5, Attribute::InReg);
+    Value *Arg = Thunk->getArg(5);
+    Arg = IRB.CreatePtrAdd(Arg, IRB.getInt64(0x20));
+    Args.push_back(Arg);
+
+    // Pass in a zero variadic argument size (in x5).
+    Args.push_back(IRB.getInt64(0));
+  }
+
   // Call the function passed to the thunk.
   Value *Callee = Thunk->getArg(0);
   Callee = IRB.CreateBitCast(Callee, PtrTy);
@@ -518,7 +543,7 @@ Function *AArch64Arm64ECCallLowering::buildEntryThunk(Function *F) {
 Function *AArch64Arm64ECCallLowering::buildGuestExitThunk(Function *F) {
   llvm::raw_null_ostream NullThunkName;
   FunctionType *Arm64Ty, *X64Ty;
-  getThunkType(F->getFunctionType(), F->getAttributes(), /*EntryThunk*/ true,
+  getThunkType(F->getFunctionType(), F->getAttributes(), ThunkType::GuestExit,
                NullThunkName, Arm64Ty, X64Ty);
   auto MangledName = getArm64ECMangledFunctionName(F->getName().str());
   assert(MangledName && "Can't guest exit to function that's already native");
diff --git a/contrib/llvm-project/llvm/lib/Target/AArch64/AArch64CallingConvention.td b/contrib/llvm-project/llvm/lib/Target/AArch64/AArch64CallingConvention.td
index 78ea4a5180f7..8e67f0f5c881 100644
--- a/contrib/llvm-project/llvm/lib/Target/AArch64/AArch64CallingConvention.td
+++ b/contrib/llvm-project/llvm/lib/Target/AArch64/AArch64CallingConvention.td
@@ -213,6 +213,9 @@ def CC_AArch64_Arm64EC_VarArg : CallingConv<[
 // address is passed in X9.
 let Entry = 1 in
 def CC_AArch64_Arm64EC_Thunk : CallingConv<[
+  // ARM64EC-specific: the InReg attribute can be used to access the x64 sp passed into entry thunks in x4 from the IR.
+  CCIfInReg<CCIfType<[i64], CCAssignToReg<[X4]>>>,
+
   // Byval aggregates are passed by pointer
   CCIfByVal<CCPassIndirect<i64>>,
 
diff --git a/contrib/llvm-project/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/contrib/llvm-project/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
index 0287856560e9..196aa50cf406 100644
--- a/contrib/llvm-project/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/contrib/llvm-project/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -8007,11 +8007,19 @@ AArch64TargetLowering::LowerCall(CallLoweringInfo &CLI,
   }
 
   if (IsVarArg && Subtarget->isWindowsArm64EC()) {
+    SDValue ParamPtr = StackPtr;
+    if (IsTailCall) {
+      // Create a dummy object at the top of the stack that can be used to get
+      // the SP after the epilogue
+      int FI = MF.getFrameInfo().CreateFixedObject(1, FPDiff, true);
+      ParamPtr = DAG.getFrameIndex(FI, PtrVT);
+    }
+
     // For vararg calls, the Arm64EC ABI requires values in x4 and x5
     // describing the argument list.  x4 contains the address of the
     // first stack parameter. x5 contains the size in bytes of all parameters
     // passed on the stack.
-    RegsToPass.emplace_back(AArch64::X4, StackPtr);
+    RegsToPass.emplace_back(AArch64::X4, ParamPtr);
     RegsToPass.emplace_back(AArch64::X5,
                             DAG.getConstant(NumBytes, DL, MVT::i64));
   }
diff --git a/contrib/llvm-project/llvm/lib/Target/AArch64/AArch64MCInstLower.cpp b/contrib/llvm-project/llvm/lib/Target/AArch64/AArch64MCInstLower.cpp
index 1e12cf545fa7..37d621cd2f65 100644
--- a/contrib/llvm-project/llvm/lib/Target/AArch64/AArch64MCInstLower.cpp
+++ b/contrib/llvm-project/llvm/lib/Target/AArch64/AArch64MCInstLower.cpp
@@ -23,11 +23,13 @@
 #include "llvm/MC/MCExpr.h"
 #include "llvm/MC/MCInst.h"
 #include "llvm/MC/MCStreamer.h"
+#include "llvm/Object/COFF.h"
 #include "llvm/Support/CodeGen.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Target/TargetLoweringObjectFile.h"
 #include "llvm/Target/TargetMachine.h"
 using namespace llvm;
+using namespace llvm::object;
 
 extern cl::opt<bool> EnableAArch64ELFLocalDynamicTLSGeneration;
 
diff --git a/contrib/llvm-project/llvm/lib/Target/AArch64/Utils/AArch64BaseInfo.h b/contrib/llvm-project/llvm/lib/Target/AArch64/Utils/AArch64BaseInfo.h
index 10e69655f77e..8b32d593d2a8 100644
--- a/contrib/llvm-project/llvm/lib/Target/AArch64/Utils/AArch64BaseInfo.h
+++ b/contrib/llvm-project/llvm/lib/Target/AArch64/Utils/AArch64BaseInfo.h
@@ -248,34 +248,6 @@ static inline bool atomicBarrierDroppedOnZero(unsigned Opcode) {
   return false;
 }
 
-static inline std::optional<std::string>
-getArm64ECMangledFunctionName(std::string Name) {
-  bool IsCppFn = Name[0] == '?';
-  if (IsCppFn && Name.find("$$h") != std::string::npos)
-    return std::nullopt;
-  if (!IsCppFn && Name[0] == '#')
-    return std::nullopt;
-
-  StringRef Prefix = "$$h";
-  size_t InsertIdx = 0;
-  if (IsCppFn) {
-    InsertIdx = Name.find("@@");
-    size_t ThreeAtSignsIdx = Name.find("@@@");
-    if (InsertIdx != std::string::npos && InsertIdx != ThreeAtSignsIdx) {
-      InsertIdx += 2;
-    } else {
-      InsertIdx = Name.find("@");
-      if (InsertIdx != std::string::npos)
-        InsertIdx++;
-    }
-  } else {
-    Prefix = "#";
-  }
-
-  Name.insert(Name.begin() + InsertIdx, Prefix.begin(), Prefix.end());
-  return std::optional<std::string>(Name);
-}
-
 namespace AArch64CC {
 
 // The CondCodes constants map directly to the 4-bit encoding of the condition
diff --git a/contrib/llvm-project/llvm/lib/Target/ARM/ARMFrameLowering.cpp b/contrib/llvm-project/llvm/lib/Target/ARM/ARMFrameLowering.cpp
index eeb7f64aa581..9b54dd4e4e61 100644
--- a/contrib/llvm-project/llvm/lib/Target/ARM/ARMFrameLowering.cpp
+++ b/contrib/llvm-project/llvm/lib/Target/ARM/ARMFrameLowering.cpp
@@ -2781,10 +2781,7 @@ void ARMFrameLowering::determineCalleeSaves(MachineFunction &MF,
   AFI->setLRIsSpilled(SavedRegs.test(ARM::LR));
 }
 
-void ARMFrameLowering::processFunctionBeforeFrameFinalized(
-    MachineFunction &MF, RegScavenger *RS) const {
-  TargetFrameLowering::processFunctionBeforeFrameFinalized(MF, RS);
-
+void ARMFrameLowering::updateLRRestored(MachineFunction &MF) {
   MachineFrameInfo &MFI = MF.getFrameInfo();
   if (!MFI.isCalleeSavedInfoValid())
     return;
@@ -2808,6 +2805,12 @@ void ARMFrameLowering::processFunctionBeforeFrameFinalized(
   }
 }
 
+void ARMFrameLowering::processFunctionBeforeFrameFinalized(
+    MachineFunction &MF, RegScavenger *RS) const {
+  TargetFrameLowering::processFunctionBeforeFrameFinalized(MF, RS);
+  updateLRRestored(MF);
+}
+
 void ARMFrameLowering::getCalleeSaves(const MachineFunction &MF,
                                       BitVector &SavedRegs) const {
   TargetFrameLowering::getCalleeSaves(MF, SavedRegs);
diff --git a/contrib/llvm-project/llvm/lib/Target/ARM/ARMFrameLowering.h b/contrib/llvm-project/llvm/lib/Target/ARM/ARMFrameLowering.h
index 8d2b8beb9a58..3c7358d8cd53 100644
--- a/contrib/llvm-project/llvm/lib/Target/ARM/ARMFrameLowering.h
+++ b/contrib/llvm-project/llvm/lib/Target/ARM/ARMFrameLowering.h
@@ -59,6 +59,10 @@ public:
   void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
                             RegScavenger *RS) const override;
 
+  /// Update the IsRestored flag on LR if it is spilled, based on the return
+  /// instructions.
+  static void updateLRRestored(MachineFunction &MF);
+
   void processFunctionBeforeFrameFinalized(
       MachineFunction &MF, RegScavenger *RS = nullptr) const override;
 
diff --git a/contrib/llvm-project/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp b/contrib/llvm-project/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
index ed9d30c3c3ab..6121055eb021 100644
--- a/contrib/llvm-project/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
+++ b/contrib/llvm-project/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
@@ -2062,17 +2062,6 @@ bool ARMLoadStoreOpt::MergeReturnIntoLDM(MachineBasicBlock &MBB) {
       MO.setReg(ARM::PC);
       PrevMI.copyImplicitOps(*MBB.getParent(), *MBBI);
       MBB.erase(MBBI);
-      // We now restore LR into PC so it is not live-out of the return block
-      // anymore: Clear the CSI Restored bit.
-      MachineFrameInfo &MFI = MBB.getParent()->getFrameInfo();
-      // CSI should be fixed after PrologEpilog Insertion
-      assert(MFI.isCalleeSavedInfoValid() && "CSI should be valid");
-      for (CalleeSavedInfo &Info : MFI.getCalleeSavedInfo()) {
-        if (Info.getReg() == ARM::LR) {
-          Info.setRestored(false);
-          break;
-        }
-      }
       return true;
     }
   }
@@ -2120,14 +2109,22 @@ bool ARMLoadStoreOpt::runOnMachineFunction(MachineFunction &Fn) {
   isThumb2 = AFI->isThumb2Function();
   isThumb1 = AFI->isThumbFunction() && !isThumb2;
 
-  bool Modified = false;
+  bool Modified = false, ModifiedLDMReturn = false;
   for (MachineBasicBlock &MBB : Fn) {
     Modified |= LoadStoreMultipleOpti(MBB);
     if (STI->hasV5TOps() && !AFI->shouldSignReturnAddress())
-      Modified |= MergeReturnIntoLDM(MBB);
+      ModifiedLDMReturn |= MergeReturnIntoLDM(MBB);
     if (isThumb1)
       Modified |= CombineMovBx(MBB);
   }
+  Modified |= ModifiedLDMReturn;
+
+  // If we merged a BX instruction into an LDM, we need to re-calculate whether
+  // LR is restored. This check needs to consider the whole function, not just
+  // the instruction(s) we changed, because there may be other BX returns which
+  // still need LR to be restored.
+  if (ModifiedLDMReturn)
+    ARMFrameLowering::updateLRRestored(Fn);
 
   Allocator.DestroyAll();
   return Modified;
diff --git a/contrib/llvm-project/llvm/lib/Target/AVR/AVRInstrInfo.td b/contrib/llvm-project/llvm/lib/Target/AVR/AVRInstrInfo.td
index efaaec32ee6b..0a77c7c1d418 100644
--- a/contrib/llvm-project/llvm/lib/Target/AVR/AVRInstrInfo.td
+++ b/contrib/llvm-project/llvm/lib/Target/AVR/AVRInstrInfo.td
@@ -1398,7 +1398,7 @@ let mayLoad = 1, hasSideEffects = 0,
 
 // Load indirect with displacement operations.
 let canFoldAsLoad = 1, isReMaterializable = 1 in {
-  let Constraints = "@earlyclobber $reg" in def LDDRdPtrQ
+  def LDDRdPtrQ
       : FSTDLDD<0,
                 (outs GPR8
                  : $reg),
diff --git a/contrib/llvm-project/llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp b/contrib/llvm-project/llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
index 76c1a14fe015..907aae13d6de 100644
--- a/contrib/llvm-project/llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
+++ b/contrib/llvm-project/llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
@@ -2343,7 +2343,9 @@ Retry:
     return DAG.getNode(
         LoongArchISD::BSTRINS, DL, ValTy, N0.getOperand(0),
         DAG.getConstant(CN1->getSExtValue() >> MaskIdx0, DL, ValTy),
-        DAG.getConstant((MaskIdx0 + MaskLen0 - 1), DL, GRLenVT),
+        DAG.getConstant(ValBits == 32 ? (MaskIdx0 + (MaskLen0 & 31) - 1)
+                                      : (MaskIdx0 + MaskLen0 - 1),
+                        DL, GRLenVT),
         DAG.getConstant(MaskIdx0, DL, GRLenVT));
   }
 
@@ -4940,3 +4942,8 @@ bool LoongArchTargetLowering::hasAndNotCompare(SDValue Y) const {
 
   return !isa<ConstantSDNode>(Y);
 }
+
+ISD::NodeType LoongArchTargetLowering::getExtendForAtomicCmpSwapArg() const {
+  // TODO: LAMCAS will use amcas{_DB,}.[bhwd] which does not require extension.
+  return ISD::SIGN_EXTEND;
+}
diff --git a/contrib/llvm-project/llvm/lib/Target/LoongArch/LoongArchISelLowering.h b/contrib/llvm-project/llvm/lib/Target/LoongArch/LoongArchISelLowering.h
index 72182623b2c3..9e9ac0b82692 100644
--- a/contrib/llvm-project/llvm/lib/Target/LoongArch/LoongArchISelLowering.h
+++ b/contrib/llvm-project/llvm/lib/Target/LoongArch/LoongArchISelLowering.h
@@ -206,6 +206,8 @@ public:
     return ISD::SIGN_EXTEND;
   }
 
+  ISD::NodeType getExtendForAtomicCmpSwapArg() const override;
+
   Register getRegisterByName(const char *RegName, LLT VT,
                              const MachineFunction &MF) const override;
   bool mayBeEmittedAsTailCall(const CallInst *CI) const override;
diff --git a/contrib/llvm-project/llvm/lib/Target/LoongArch/LoongArchTargetMachine.h b/contrib/llvm-project/llvm/lib/Target/LoongArch/LoongArchTargetMachine.h
index 7d39d47e86b3..fa9bc7608e7d 100644
--- a/contrib/llvm-project/llvm/lib/Target/LoongArch/LoongArchTargetMachine.h
+++ b/contrib/llvm-project/llvm/lib/Target/LoongArch/LoongArchTargetMachine.h
@@ -45,6 +45,11 @@ public:
   MachineFunctionInfo *
   createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F,
                             const TargetSubtargetInfo *STI) const override;
+
+  // Addrspacecasts are always noops.
+  bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override {
+    return true;
+  }
 };
 
 } // end namespace llvm
diff --git a/contrib/llvm-project/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp b/contrib/llvm-project/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
index 27d7f0f261d1..adfcea736158 100644
--- a/contrib/llvm-project/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
+++ b/contrib/llvm-project/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
@@ -1255,7 +1255,9 @@ void MipsTargetELFStreamer::emitDirectiveCpsetup(unsigned RegNo,
     emitRRI(Mips::SD, GPReg, Mips::SP, RegOrOffset, SMLoc(), &STI);
   }
 
-  if (getABI().IsN32()) {
+#if 0
+  // We haven't support -mabicalls -mno-shared yet.
+  if (-mno-shared) {
     MCSymbol *GPSym = MCA.getContext().getOrCreateSymbol("__gnu_local_gp");
     const MipsMCExpr *HiExpr = MipsMCExpr::create(
         MipsMCExpr::MEK_HI, MCSymbolRefExpr::create(GPSym, MCA.getContext()),
@@ -1273,6 +1275,7 @@ void MipsTargetELFStreamer::emitDirectiveCpsetup(unsigned RegNo,
 
     return;
   }
+#endif
 
   const MipsMCExpr *HiExpr = MipsMCExpr::createGpOff(
       MipsMCExpr::MEK_HI, MCSymbolRefExpr::create(&Sym, MCA.getContext()),
@@ -1288,8 +1291,11 @@ void MipsTargetELFStreamer::emitDirectiveCpsetup(unsigned RegNo,
   emitRRX(Mips::ADDiu, GPReg, GPReg, MCOperand::createExpr(LoExpr), SMLoc(),
           &STI);
 
-  // daddu  $gp, $gp, $funcreg
-  emitRRR(Mips::DADDu, GPReg, GPReg, RegNo, SMLoc(), &STI);
+  // (d)addu  $gp, $gp, $funcreg
+  if (getABI().IsN32())
+    emitRRR(Mips::ADDu, GPReg, GPReg, RegNo, SMLoc(), &STI);
+  else
+    emitRRR(Mips::DADDu, GPReg, GPReg, RegNo, SMLoc(), &STI);
 }
 
 void MipsTargetELFStreamer::emitDirectiveCpreturn(unsigned SaveLocation,
diff --git a/contrib/llvm-project/llvm/lib/Target/Mips/MipsExpandPseudo.cpp b/contrib/llvm-project/llvm/lib/Target/Mips/MipsExpandPseudo.cpp
index 2c2554b5b4bc..c30129743a96 100644
--- a/contrib/llvm-project/llvm/lib/Target/Mips/MipsExpandPseudo.cpp
+++ b/contrib/llvm-project/llvm/lib/Target/Mips/MipsExpandPseudo.cpp
@@ -388,18 +388,32 @@ bool MipsExpandPseudo::expandAtomicBinOpSubword(
     Opcode = Mips::XOR;
     break;
   case Mips::ATOMIC_LOAD_UMIN_I8_POSTRA:
+    IsUnsigned = true;
+    IsMin = true;
+    break;
   case Mips::ATOMIC_LOAD_UMIN_I16_POSTRA:
     IsUnsigned = true;
-    [[fallthrough]];
+    IsMin = true;
+    break;
   case Mips::ATOMIC_LOAD_MIN_I8_POSTRA:
+    SEOp = Mips::SEB;
+    IsMin = true;
+    break;
   case Mips::ATOMIC_LOAD_MIN_I16_POSTRA:
     IsMin = true;
     break;
   case Mips::ATOMIC_LOAD_UMAX_I8_POSTRA:
+    IsUnsigned = true;
+    IsMax = true;
+    break;
   case Mips::ATOMIC_LOAD_UMAX_I16_POSTRA:
     IsUnsigned = true;
-    [[fallthrough]];
+    IsMax = true;
+    break;
   case Mips::ATOMIC_LOAD_MAX_I8_POSTRA:
+    SEOp = Mips::SEB;
+    IsMax = true;
+    break;
   case Mips::ATOMIC_LOAD_MAX_I16_POSTRA:
     IsMax = true;
     break;
@@ -461,14 +475,42 @@ bool MipsExpandPseudo::expandAtomicBinOpSubword(
 
     // For little endian we need to clear uninterested bits.
     if (STI->isLittle()) {
-      // and OldVal, OldVal, Mask
-      // and Incr, Incr, Mask
-      BuildMI(loopMBB, DL, TII->get(Mips::AND), OldVal)
-          .addReg(OldVal)
-          .addReg(Mask);
-      BuildMI(loopMBB, DL, TII->get(Mips::AND), Incr).addReg(Incr).addReg(Mask);
+      if (!IsUnsigned) {
+        BuildMI(loopMBB, DL, TII->get(Mips::SRAV), OldVal)
+            .addReg(OldVal)
+            .addReg(ShiftAmnt);
+        BuildMI(loopMBB, DL, TII->get(Mips::SRAV), Incr)
+            .addReg(Incr)
+            .addReg(ShiftAmnt);
+        if (STI->hasMips32r2()) {
+          BuildMI(loopMBB, DL, TII->get(SEOp), OldVal).addReg(OldVal);
+          BuildMI(loopMBB, DL, TII->get(SEOp), Incr).addReg(Incr);
+        } else {
+          const unsigned ShiftImm = SEOp == Mips::SEH ? 16 : 24;
+          BuildMI(loopMBB, DL, TII->get(Mips::SLL), OldVal)
+              .addReg(OldVal, RegState::Kill)
+              .addImm(ShiftImm);
+          BuildMI(loopMBB, DL, TII->get(Mips::SRA), OldVal)
+              .addReg(OldVal, RegState::Kill)
+              .addImm(ShiftImm);
+          BuildMI(loopMBB, DL, TII->get(Mips::SLL), Incr)
+              .addReg(Incr, RegState::Kill)
+              .addImm(ShiftImm);
+          BuildMI(loopMBB, DL, TII->get(Mips::SRA), Incr)
+              .addReg(Incr, RegState::Kill)
+              .addImm(ShiftImm);
+        }
+      } else {
+        // and OldVal, OldVal, Mask
+        // and Incr, Incr, Mask
+        BuildMI(loopMBB, DL, TII->get(Mips::AND), OldVal)
+            .addReg(OldVal)
+            .addReg(Mask);
+        BuildMI(loopMBB, DL, TII->get(Mips::AND), Incr)
+            .addReg(Incr)
+            .addReg(Mask);
+      }
     }
-
     // unsigned: sltu Scratch4, oldVal, Incr
     // signed:   slt Scratch4, oldVal, Incr
     BuildMI(loopMBB, DL, TII->get(SLTScratch4), Scratch4)
diff --git a/contrib/llvm-project/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp b/contrib/llvm-project/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp
index 6792842f8550..424501c35c04 100644
--- a/contrib/llvm-project/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp
+++ b/contrib/llvm-project/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp
@@ -1191,12 +1191,6 @@ void PPCFrameLowering::emitPrologue(MachineFunction &MF,
       if ((Reg == PPC::X2 || Reg == PPC::R2) && MustSaveTOC)
         continue;
 
-      // For SVR4, don't emit a move for the CR spill slot if we haven't
-      // spilled CRs.
-      if (isSVR4ABI && (PPC::CR2 <= Reg && Reg <= PPC::CR4)
-          && !MustSaveCR)
-        continue;
-
       // For 64-bit SVR4 when we have spilled CRs, the spill location
       // is SP+8, not a frame-relative slot.
       if (isSVR4ABI && isPPC64 && (PPC::CR2 <= Reg && Reg <= PPC::CR4)) {
diff --git a/contrib/llvm-project/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/contrib/llvm-project/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index aec58d1c0dcb..85f1e670045b 100644
--- a/contrib/llvm-project/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/contrib/llvm-project/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -14942,6 +14942,7 @@ SDValue PPCTargetLowering::combineFPToIntToFP(SDNode *N,
     SDValue Ld = DAG.getMemIntrinsicNode(PPCISD::LXSIZX, dl,
                                          DAG.getVTList(MVT::f64, MVT::Other),
                                          Ops, MVT::i8, LDN->getMemOperand());
+    DAG.makeEquivalentMemoryOrdering(LDN, Ld);
 
     // For signed conversion, we need to sign-extend the value in the VSR
     if (Signed) {
diff --git a/contrib/llvm-project/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/contrib/llvm-project/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index 80447d03c000..a0cec426002b 100644
--- a/contrib/llvm-project/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/contrib/llvm-project/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -3192,7 +3192,8 @@ static std::optional<uint64_t> getExactInteger(const APFloat &APF,
 // Note that this method will also match potentially unappealing index
 // sequences, like <i32 0, i32 50939494>, however it is left to the caller to
 // determine whether this is worth generating code for.
-static std::optional<VIDSequence> isSimpleVIDSequence(SDValue Op) {
+static std::optional<VIDSequence> isSimpleVIDSequence(SDValue Op,
+                                                      unsigned EltSizeInBits) {
   unsigned NumElts = Op.getNumOperands();
   assert(Op.getOpcode() == ISD::BUILD_VECTOR && "Unexpected BUILD_VECTOR");
   bool IsInteger = Op.getValueType().isInteger();
@@ -3200,7 +3201,7 @@ static std::optional<VIDSequence> isSimpleVIDSequence(SDValue Op) {
   std::optional<unsigned> SeqStepDenom;
   std::optional<int64_t> SeqStepNum, SeqAddend;
   std::optional<std::pair<uint64_t, unsigned>> PrevElt;
-  unsigned EltSizeInBits = Op.getValueType().getScalarSizeInBits();
+  assert(EltSizeInBits >= Op.getValueType().getScalarSizeInBits());
   for (unsigned Idx = 0; Idx < NumElts; Idx++) {
     // Assume undef elements match the sequence; we just have to be careful
     // when interpolating across them.
@@ -3213,14 +3214,14 @@ static std::optional<VIDSequence> isSimpleVIDSequence(SDValue Op) {
       if (!isa<ConstantSDNode>(Op.getOperand(Idx)))
         return std::nullopt;
       Val = Op.getConstantOperandVal(Idx) &
-            maskTrailingOnes<uint64_t>(EltSizeInBits);
+            maskTrailingOnes<uint64_t>(Op.getScalarValueSizeInBits());
     } else {
       // The BUILD_VECTOR must be all constants.
       if (!isa<ConstantFPSDNode>(Op.getOperand(Idx)))
         return std::nullopt;
       if (auto ExactInteger = getExactInteger(
               cast<ConstantFPSDNode>(Op.getOperand(Idx))->getValueAPF(),
-              EltSizeInBits))
+              Op.getScalarValueSizeInBits()))
         Val = *ExactInteger;
       else
         return std::nullopt;
@@ -3276,11 +3277,11 @@ static std::optional<VIDSequence> isSimpleVIDSequence(SDValue Op) {
     uint64_t Val;
     if (IsInteger) {
       Val = Op.getConstantOperandVal(Idx) &
-            maskTrailingOnes<uint64_t>(EltSizeInBits);
+            maskTrailingOnes<uint64_t>(Op.getScalarValueSizeInBits());
     } else {
       Val = *getExactInteger(
           cast<ConstantFPSDNode>(Op.getOperand(Idx))->getValueAPF(),
-          EltSizeInBits);
+          Op.getScalarValueSizeInBits());
     }
     uint64_t ExpectedVal =
         (int64_t)(Idx * (uint64_t)*SeqStepNum) / *SeqStepDenom;
@@ -3550,7 +3551,7 @@ static SDValue lowerBuildVectorOfConstants(SDValue Op, SelectionDAG &DAG,
   // Try and match index sequences, which we can lower to the vid instruction
   // with optional modifications. An all-undef vector is matched by
   // getSplatValue, above.
-  if (auto SimpleVID = isSimpleVIDSequence(Op)) {
+  if (auto SimpleVID = isSimpleVIDSequence(Op, Op.getScalarValueSizeInBits())) {
     int64_t StepNumerator = SimpleVID->StepNumerator;
     unsigned StepDenominator = SimpleVID->StepDenominator;
     int64_t Addend = SimpleVID->Addend;
@@ -15562,7 +15563,10 @@ SDValue RISCVTargetLowering::PerformDAGCombine(SDNode *N,
 
     if (Index.getOpcode() == ISD::BUILD_VECTOR &&
         MGN->getExtensionType() == ISD::NON_EXTLOAD && isTypeLegal(VT)) {
-      if (std::optional<VIDSequence> SimpleVID = isSimpleVIDSequence(Index);
+      // The sequence will be XLenVT, not the type of Index. Tell
+      // isSimpleVIDSequence this so we avoid overflow.
+      if (std::optional<VIDSequence> SimpleVID =
+              isSimpleVIDSequence(Index, Subtarget.getXLen());
           SimpleVID && SimpleVID->StepDenominator == 1) {
         const int64_t StepNumerator = SimpleVID->StepNumerator;
         const int64_t Addend = SimpleVID->Addend;
diff --git a/contrib/llvm-project/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp b/contrib/llvm-project/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
index 866d5cf340e6..66dab70d455f 100644
--- a/contrib/llvm-project/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
+++ b/contrib/llvm-project/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
@@ -37,6 +37,9 @@ static cl::opt<unsigned> SLPMaxVF(
 InstructionCost
 RISCVTTIImpl::getRISCVInstructionCost(ArrayRef<unsigned> OpCodes, MVT VT,
                                       TTI::TargetCostKind CostKind) {
+  // Check if the type is valid for all CostKind
+  if (!VT.isVector())
+    return InstructionCost::getInvalid();
   size_t NumInstr = OpCodes.size();
   if (CostKind == TTI::TCK_CodeSize)
     return NumInstr;
diff --git a/contrib/llvm-project/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp b/contrib/llvm-project/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
index 5db04a8bef82..5e0b0594b0a4 100644
--- a/contrib/llvm-project/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
+++ b/contrib/llvm-project/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
@@ -4252,6 +4252,7 @@ SDValue SystemZTargetLowering::lowerXALUO(SDValue Op,
   if (N->getValueType(0) == MVT::i128) {
     unsigned BaseOp = 0;
     unsigned FlagOp = 0;
+    bool IsBorrow = false;
     switch (Op.getOpcode()) {
     default: llvm_unreachable("Unknown instruction!");
     case ISD::UADDO:
@@ -4261,6 +4262,7 @@ SDValue SystemZTargetLowering::lowerXALUO(SDValue Op,
     case ISD::USUBO:
       BaseOp = ISD::SUB;
       FlagOp = SystemZISD::VSCBI;
+      IsBorrow = true;
       break;
     }
     SDValue Result = DAG.getNode(BaseOp, DL, MVT::i128, LHS, RHS);
@@ -4268,6 +4270,9 @@ SDValue SystemZTargetLowering::lowerXALUO(SDValue Op,
     Flag = DAG.getNode(ISD::AssertZext, DL, MVT::i128, Flag,
                        DAG.getValueType(MVT::i1));
     Flag = DAG.getZExtOrTrunc(Flag, DL, N->getValueType(1));
+    if (IsBorrow)
+      Flag = DAG.getNode(ISD::XOR, DL, Flag.getValueType(),
+                         Flag, DAG.getConstant(1, DL, Flag.getValueType()));
     return DAG.getNode(ISD::MERGE_VALUES, DL, N->getVTList(), Result, Flag);
   }
 
@@ -4340,6 +4345,7 @@ SDValue SystemZTargetLowering::lowerUADDSUBO_CARRY(SDValue Op,
   if (VT == MVT::i128) {
     unsigned BaseOp = 0;
     unsigned FlagOp = 0;
+    bool IsBorrow = false;
     switch (Op.getOpcode()) {
     default: llvm_unreachable("Unknown instruction!");
     case ISD::UADDO_CARRY:
@@ -4349,14 +4355,21 @@ SDValue SystemZTargetLowering::lowerUADDSUBO_CARRY(SDValue Op,
     case ISD::USUBO_CARRY:
       BaseOp = SystemZISD::VSBI;
       FlagOp = SystemZISD::VSBCBI;
+      IsBorrow = true;
       break;
     }
+    if (IsBorrow)
+      Carry = DAG.getNode(ISD::XOR, DL, Carry.getValueType(),
+                          Carry, DAG.getConstant(1, DL, Carry.getValueType()));
     Carry = DAG.getZExtOrTrunc(Carry, DL, MVT::i128);
     SDValue Result = DAG.getNode(BaseOp, DL, MVT::i128, LHS, RHS, Carry);
     SDValue Flag = DAG.getNode(FlagOp, DL, MVT::i128, LHS, RHS, Carry);
     Flag = DAG.getNode(ISD::AssertZext, DL, MVT::i128, Flag,
                        DAG.getValueType(MVT::i1));
     Flag = DAG.getZExtOrTrunc(Flag, DL, N->getValueType(1));
+    if (IsBorrow)
+      Flag = DAG.getNode(ISD::XOR, DL, Flag.getValueType(),
+                         Flag, DAG.getConstant(1, DL, Flag.getValueType()));
     return DAG.getNode(ISD::MERGE_VALUES, DL, N->getVTList(), Result, Flag);
   }
 
@@ -6611,6 +6624,27 @@ SDValue SystemZTargetLowering::combineZERO_EXTEND(
       return NewSelect;
     }
   }
+  // Convert (zext (xor (trunc X), C)) into (xor (trunc X), C') if the size
+  // of the result is smaller than the size of X and all the truncated bits
+  // of X are already zero.
+  if (N0.getOpcode() == ISD::XOR &&
+      N0.hasOneUse() && N0.getOperand(0).hasOneUse() &&
+      N0.getOperand(0).getOpcode() == ISD::TRUNCATE &&
+      N0.getOperand(1).getOpcode() == ISD::Constant) {
+    SDValue X = N0.getOperand(0).getOperand(0);
+    if (VT.isScalarInteger() && VT.getSizeInBits() < X.getValueSizeInBits()) {
+      KnownBits Known = DAG.computeKnownBits(X);
+      APInt TruncatedBits = APInt::getBitsSet(X.getValueSizeInBits(),
+                                              N0.getValueSizeInBits(),
+                                              VT.getSizeInBits());
+      if (TruncatedBits.isSubsetOf(Known.Zero)) {
+        X = DAG.getNode(ISD::TRUNCATE, SDLoc(X), VT, X);
+        APInt Mask = N0.getConstantOperandAPInt(1).zext(VT.getSizeInBits());
+        return DAG.getNode(ISD::XOR, SDLoc(N0), VT,
+                           X, DAG.getConstant(Mask, SDLoc(N0), VT));
+      }
+    }
+  }
   return SDValue();
 }
 
diff --git a/contrib/llvm-project/llvm/lib/Target/X86/X86ISelLowering.cpp b/contrib/llvm-project/llvm/lib/Target/X86/X86ISelLowering.cpp
index a071c5a3ca03..9e64726fb6ff 100644
--- a/contrib/llvm-project/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/contrib/llvm-project/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -47878,6 +47878,7 @@ static SDValue combineAndShuffleNot(SDNode *N, SelectionDAG &DAG,
   SDValue X, Y;
   SDValue N0 = N->getOperand(0);
   SDValue N1 = N->getOperand(1);
+  const TargetLowering &TLI = DAG.getTargetLoweringInfo();
 
   if (SDValue Not = GetNot(N0)) {
     X = Not;
@@ -47891,9 +47892,11 @@ static SDValue combineAndShuffleNot(SDNode *N, SelectionDAG &DAG,
   X = DAG.getBitcast(VT, X);
   Y = DAG.getBitcast(VT, Y);
   SDLoc DL(N);
+
   // We do not split for SSE at all, but we need to split vectors for AVX1 and
   // AVX2.
-  if (!Subtarget.useAVX512Regs() && VT.is512BitVector()) {
+  if (!Subtarget.useAVX512Regs() && VT.is512BitVector() && 
+      TLI.isTypeLegal(VT.getHalfNumVectorElementsVT(*DAG.getContext()))) {
     SDValue LoX, HiX;
     std::tie(LoX, HiX) = splitVector(X, DAG, DL);
     SDValue LoY, HiY;
@@ -47903,7 +47906,11 @@ static SDValue combineAndShuffleNot(SDNode *N, SelectionDAG &DAG,
     SDValue HiV = DAG.getNode(X86ISD::ANDNP, DL, SplitVT, {HiX, HiY});
     return DAG.getNode(ISD::CONCAT_VECTORS, DL, VT, {LoV, HiV});
   }
-  return DAG.getNode(X86ISD::ANDNP, DL, VT, {X, Y});
+
+  if (TLI.isTypeLegal(VT))
+    return DAG.getNode(X86ISD::ANDNP, DL, VT, {X, Y});
+
+  return SDValue();
 }
 
 // Try to widen AND, OR and XOR nodes to VT in order to remove casts around
diff --git a/contrib/llvm-project/llvm/lib/Target/X86/X86InstrVecCompiler.td b/contrib/llvm-project/llvm/lib/Target/X86/X86InstrVecCompiler.td
index bbd19cf8d5b2..461b2badc131 100644
--- a/contrib/llvm-project/llvm/lib/Target/X86/X86InstrVecCompiler.td
+++ b/contrib/llvm-project/llvm/lib/Target/X86/X86InstrVecCompiler.td
@@ -83,6 +83,7 @@ defm : subvector_subreg_lowering<VR128, v2f64, VR256, v4f64,  sub_xmm>;
 defm : subvector_subreg_lowering<VR128, v8i16, VR256, v16i16, sub_xmm>;
 defm : subvector_subreg_lowering<VR128, v16i8, VR256, v32i8,  sub_xmm>;
 defm : subvector_subreg_lowering<VR128, v8f16, VR256, v16f16, sub_xmm>;
+defm : subvector_subreg_lowering<VR128, v8bf16, VR256, v16bf16, sub_xmm>;
 
 // A 128-bit subvector extract from the first 512-bit vector position is a
 // subregister copy that needs no instruction. Likewise, a 128-bit subvector
@@ -95,6 +96,7 @@ defm : subvector_subreg_lowering<VR128, v2f64, VR512, v8f64,  sub_xmm>;
 defm : subvector_subreg_lowering<VR128, v8i16, VR512, v32i16, sub_xmm>;
 defm : subvector_subreg_lowering<VR128, v16i8, VR512, v64i8,  sub_xmm>;
 defm : subvector_subreg_lowering<VR128, v8f16, VR512, v32f16, sub_xmm>;
+defm : subvector_subreg_lowering<VR128, v8bf16, VR512, v32bf16, sub_xmm>;
 
 // A 128-bit subvector extract from the first 512-bit vector position is a
 // subregister copy that needs no instruction. Likewise, a 128-bit subvector
@@ -107,6 +109,7 @@ defm : subvector_subreg_lowering<VR256, v4f64,  VR512, v8f64,  sub_ymm>;
 defm : subvector_subreg_lowering<VR256, v16i16, VR512, v32i16, sub_ymm>;
 defm : subvector_subreg_lowering<VR256, v32i8,  VR512, v64i8,  sub_ymm>;
 defm : subvector_subreg_lowering<VR256, v16f16, VR512, v32f16, sub_ymm>;
+defm : subvector_subreg_lowering<VR256, v16bf16, VR512, v32bf16, sub_ymm>;
 
 
 // If we're inserting into an all zeros vector, just use a plain move which
diff --git a/contrib/llvm-project/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/contrib/llvm-project/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
index cd40b1d3b093..be774a89eccb 100644
--- a/contrib/llvm-project/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
+++ b/contrib/llvm-project/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
@@ -6080,6 +6080,10 @@ bool X86TTIImpl::areInlineCompatible(const Function *Caller,
 
   for (const Instruction &I : instructions(Callee)) {
     if (const auto *CB = dyn_cast<CallBase>(&I)) {
+      // Having more target features is fine for inline ASM.
+      if (CB->isInlineAsm())
+        continue;
+
       SmallVector<Type *, 8> Types;
       for (Value *Arg : CB->args())
         Types.push_back(Arg->getType());
diff --git a/contrib/llvm-project/llvm/lib/Transforms/IPO/ArgumentPromotion.cpp b/contrib/llvm-project/llvm/lib/Transforms/IPO/ArgumentPromotion.cpp
index 8058282c4225..062a3d341007 100644
--- a/contrib/llvm-project/llvm/lib/Transforms/IPO/ArgumentPromotion.cpp
+++ b/contrib/llvm-project/llvm/lib/Transforms/IPO/ArgumentPromotion.cpp
@@ -652,10 +652,6 @@ static bool findArgParts(Argument *Arg, const DataLayout &DL, AAResults &AAR,
   // check to see if the pointer is guaranteed to not be modified from entry of
   // the function to each of the load instructions.
 
-  // Because there could be several/many load instructions, remember which
-  // blocks we know to be transparent to the load.
-  df_iterator_default_set<BasicBlock *, 16> TranspBlocks;
-
   for (LoadInst *Load : Loads) {
     // Check to see if the load is invalidated from the start of the block to
     // the load itself.
@@ -669,7 +665,7 @@ static bool findArgParts(Argument *Arg, const DataLayout &DL, AAResults &AAR,
     // To do this, we perform a depth first search on the inverse CFG from the
     // loading block.
     for (BasicBlock *P : predecessors(BB)) {
-      for (BasicBlock *TranspBB : inverse_depth_first_ext(P, TranspBlocks))
+      for (BasicBlock *TranspBB : inverse_depth_first(P))
         if (AAR.canBasicBlockModify(*TranspBB, Loc))
           return false;
     }
diff --git a/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
index a647be2d26c7..bc43edb5e620 100644
--- a/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ b/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -412,11 +412,14 @@ Instruction *InstCombinerImpl::simplifyMaskedScatter(IntrinsicInst &II) {
   if (auto *SplatPtr = getSplatValue(II.getArgOperand(1))) {
     // scatter(splat(value), splat(ptr), non-zero-mask) -> store value, ptr
     if (auto *SplatValue = getSplatValue(II.getArgOperand(0))) {
-      Align Alignment = cast<ConstantInt>(II.getArgOperand(2))->getAlignValue();
-      StoreInst *S =
-          new StoreInst(SplatValue, SplatPtr, /*IsVolatile=*/false, Alignment);
-      S->copyMetadata(II);
-      return S;
+      if (maskContainsAllOneOrUndef(ConstMask)) {
+        Align Alignment =
+            cast<ConstantInt>(II.getArgOperand(2))->getAlignValue();
+        StoreInst *S = new StoreInst(SplatValue, SplatPtr, /*IsVolatile=*/false,
+                                     Alignment);
+        S->copyMetadata(II);
+        return S;
+      }
     }
     // scatter(vector, splat(ptr), splat(true)) -> store extract(vector,
     // lastlane), ptr
diff --git a/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp b/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
index 58f0763bb0c0..c5d3f60176a8 100644
--- a/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
+++ b/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
@@ -2156,14 +2156,14 @@ static bool collectInsertionElements(Value *V, unsigned Shift,
     Type *ElementIntTy = IntegerType::get(C->getContext(), ElementSize);
 
     for (unsigned i = 0; i != NumElts; ++i) {
-      unsigned ShiftI = Shift + i * ElementSize;
+      unsigned ShiftI = i * ElementSize;
       Constant *Piece = ConstantFoldBinaryInstruction(
           Instruction::LShr, C, ConstantInt::get(C->getType(), ShiftI));
       if (!Piece)
         return false;
 
       Piece = ConstantExpr::getTrunc(Piece, ElementIntTy);
-      if (!collectInsertionElements(Piece, ShiftI, Elements, VecEltTy,
+      if (!collectInsertionElements(Piece, ShiftI + Shift, Elements, VecEltTy,
                                     isBigEndian))
         return false;
     }
diff --git a/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp b/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
index 8c0fd6622551..9973a80a7db9 100644
--- a/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
+++ b/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
@@ -6491,6 +6491,13 @@ InstCombiner::getFlippedStrictnessPredicateAndConstant(CmpInst::Predicate Pred,
       if (!SafeReplacementConstant)
         SafeReplacementConstant = CI;
     }
+  } else if (isa<VectorType>(C->getType())) {
+    // Handle scalable splat
+    Value *SplatC = C->getSplatValue();
+    auto *CI = dyn_cast_or_null<ConstantInt>(SplatC);
+    // Bail out if the constant can't be safely incremented/decremented.
+    if (!CI || !ConstantIsOk(CI))
+      return std::nullopt;
   } else {
     // ConstantExpr?
     return std::nullopt;
diff --git a/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp b/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp
index 21bfc91148bf..9f220ec003ec 100644
--- a/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp
+++ b/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp
@@ -1284,7 +1284,11 @@ Instruction *InstCombinerImpl::foldSelectValueEquivalence(SelectInst &Sel,
       isGuaranteedNotToBeUndefOrPoison(CmpRHS, SQ.AC, &Sel, &DT)) {
     if (Value *V = simplifyWithOpReplaced(TrueVal, CmpLHS, CmpRHS, SQ,
                                           /* AllowRefinement */ true))
-      return replaceOperand(Sel, Swapped ? 2 : 1, V);
+      // Require either the replacement or the simplification result to be a
+      // constant to avoid infinite loops.
+      // FIXME: Make this check more precise.
+      if (isa<Constant>(CmpRHS) || isa<Constant>(V))
+        return replaceOperand(Sel, Swapped ? 2 : 1, V);
 
     // Even if TrueVal does not simplify, we can directly replace a use of
     // CmpLHS with CmpRHS, as long as the instruction is not used anywhere
@@ -1302,7 +1306,8 @@ Instruction *InstCombinerImpl::foldSelectValueEquivalence(SelectInst &Sel,
       isGuaranteedNotToBeUndefOrPoison(CmpLHS, SQ.AC, &Sel, &DT))
     if (Value *V = simplifyWithOpReplaced(TrueVal, CmpRHS, CmpLHS, SQ,
                                           /* AllowRefinement */ true))
-      return replaceOperand(Sel, Swapped ? 2 : 1, V);
+      if (isa<Constant>(CmpLHS) || isa<Constant>(V))
+        return replaceOperand(Sel, Swapped ? 2 : 1, V);
 
   auto *FalseInst = dyn_cast<Instruction>(FalseVal);
   if (!FalseInst)
diff --git a/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp b/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
index 5d207dcfd18d..6f0cf9d9c8f1 100644
--- a/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
+++ b/contrib/llvm-project/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
@@ -1455,6 +1455,7 @@ static Value *foldOperationIntoSelectOperand(Instruction &I, SelectInst *SI,
                                              Value *NewOp, InstCombiner &IC) {
   Instruction *Clone = I.clone();
   Clone->replaceUsesOfWith(SI, NewOp);
+  Clone->dropUBImplyingAttrsAndMetadata();
   IC.InsertNewInstBefore(Clone, SI->getIterator());
   return Clone;
 }
diff --git a/contrib/llvm-project/llvm/lib/Transforms/Instrumentation/ThreadSanitizer.cpp b/contrib/llvm-project/llvm/lib/Transforms/Instrumentation/ThreadSanitizer.cpp
index 8ee0bca7e354..0f42ff790869 100644
--- a/contrib/llvm-project/llvm/lib/Transforms/Instrumentation/ThreadSanitizer.cpp
+++ b/contrib/llvm-project/llvm/lib/Transforms/Instrumentation/ThreadSanitizer.cpp
@@ -752,11 +752,12 @@ bool ThreadSanitizer::instrumentAtomic(Instruction *I, const DataLayout &DL) {
     const unsigned ByteSize = 1U << Idx;
     const unsigned BitSize = ByteSize * 8;
     Type *Ty = Type::getIntNTy(IRB.getContext(), BitSize);
-    Value *Args[] = {Addr,
-                     IRB.CreateIntCast(RMWI->getValOperand(), Ty, false),
+    Value *Val = RMWI->getValOperand();
+    Value *Args[] = {Addr, IRB.CreateBitOrPointerCast(Val, Ty),
                      createOrdering(&IRB, RMWI->getOrdering())};
-    CallInst *C = CallInst::Create(F, Args);
-    ReplaceInstWithInst(I, C);
+    Value *C = IRB.CreateCall(F, Args);
+    I->replaceAllUsesWith(IRB.CreateBitOrPointerCast(C, Val->getType()));
+    I->eraseFromParent();
   } else if (AtomicCmpXchgInst *CASI = dyn_cast<AtomicCmpXchgInst>(I)) {
     Value *Addr = CASI->getPointerOperand();
     Type *OrigOldValTy = CASI->getNewValOperand()->getType();
diff --git a/contrib/llvm-project/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp b/contrib/llvm-project/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
index 250ad19902f0..380d65836553 100644
--- a/contrib/llvm-project/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
+++ b/contrib/llvm-project/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
@@ -857,6 +857,9 @@ struct DSEState {
   // no longer be captured.
   bool ShouldIterateEndOfFunctionDSE;
 
+  /// Dead instructions to be removed at the end of DSE.
+  SmallVector<Instruction *> ToRemove;
+
   // Class contains self-reference, make sure it's not copied/moved.
   DSEState(const DSEState &) = delete;
   DSEState &operator=(const DSEState &) = delete;
@@ -1692,7 +1695,8 @@ struct DSEState {
     return {MaybeDeadAccess};
   }
 
-  // Delete dead memory defs
+  /// Delete dead memory defs and recursively add their operands to ToRemove if
+  /// they became dead.
   void deleteDeadInstruction(Instruction *SI) {
     MemorySSAUpdater Updater(&MSSA);
     SmallVector<Instruction *, 32> NowDeadInsts;
@@ -1708,8 +1712,11 @@ struct DSEState {
       salvageKnowledge(DeadInst);
 
       // Remove the Instruction from MSSA.
-      if (MemoryAccess *MA = MSSA.getMemoryAccess(DeadInst)) {
-        if (MemoryDef *MD = dyn_cast<MemoryDef>(MA)) {
+      MemoryAccess *MA = MSSA.getMemoryAccess(DeadInst);
+      bool IsMemDef = MA && isa<MemoryDef>(MA);
+      if (MA) {
+        if (IsMemDef) {
+          auto *MD = cast<MemoryDef>(MA);
           SkipStores.insert(MD);
           if (auto *SI = dyn_cast<StoreInst>(MD->getMemoryInst())) {
             if (SI->getValueOperand()->getType()->isPointerTy()) {
@@ -1730,13 +1737,21 @@ struct DSEState {
       // Remove its operands
       for (Use &O : DeadInst->operands())
         if (Instruction *OpI = dyn_cast<Instruction>(O)) {
-          O = nullptr;
+          O.set(PoisonValue::get(O->getType()));
           if (isInstructionTriviallyDead(OpI, &TLI))
             NowDeadInsts.push_back(OpI);
         }
 
       EI.removeInstruction(DeadInst);
-      DeadInst->eraseFromParent();
+      // Remove memory defs directly if they don't produce results, but only
+      // queue other dead instructions for later removal. They may have been
+      // used as memory locations that have been cached by BatchAA. Removing
+      // them here may lead to newly created instructions to be allocated at the
+      // same address, yielding stale cache entries.
+      if (IsMemDef && DeadInst->getType()->isVoidTy())
+        DeadInst->eraseFromParent();
+      else
+        ToRemove.push_back(DeadInst);
     }
   }
 
@@ -2233,6 +2248,12 @@ static bool eliminateDeadStores(Function &F, AliasAnalysis &AA, MemorySSA &MSSA,
 
   MadeChange |= State.eliminateRedundantStoresOfExistingValues();
   MadeChange |= State.eliminateDeadWritesAtEndOfFunction();
+
+  while (!State.ToRemove.empty()) {
+    Instruction *DeadInst = State.ToRemove.pop_back_val();
+    DeadInst->eraseFromParent();
+  }
+
   return MadeChange;
 }
 } // end anonymous namespace
diff --git a/contrib/llvm-project/llvm/lib/Transforms/Scalar/SROA.cpp b/contrib/llvm-project/llvm/lib/Transforms/Scalar/SROA.cpp
index bdbaf4f55c96..17a94f9381bf 100644
--- a/contrib/llvm-project/llvm/lib/Transforms/Scalar/SROA.cpp
+++ b/contrib/llvm-project/llvm/lib/Transforms/Scalar/SROA.cpp
@@ -2257,6 +2257,41 @@ checkVectorTypesForPromotion(Partition &P, const DataLayout &DL,
   return nullptr;
 }
 
+static VectorType *createAndCheckVectorTypesForPromotion(
+    SetVector<Type *> &OtherTys, ArrayRef<VectorType *> CandidateTysCopy,
+    function_ref<void(Type *)> CheckCandidateType, Partition &P,
+    const DataLayout &DL, SmallVectorImpl<VectorType *> &CandidateTys,
+    bool &HaveCommonEltTy, Type *&CommonEltTy, bool &HaveVecPtrTy,
+    bool &HaveCommonVecPtrTy, VectorType *&CommonVecPtrTy) {
+  [[maybe_unused]] VectorType *OriginalElt =
+      CandidateTysCopy.size() ? CandidateTysCopy[0] : nullptr;
+  // Consider additional vector types where the element type size is a
+  // multiple of load/store element size.
+  for (Type *Ty : OtherTys) {
+    if (!VectorType::isValidElementType(Ty))
+      continue;
+    unsigned TypeSize = DL.getTypeSizeInBits(Ty).getFixedValue();
+    // Make a copy of CandidateTys and iterate through it, because we
+    // might append to CandidateTys in the loop.
+    for (VectorType *const VTy : CandidateTysCopy) {
+      // The elements in the copy should remain invariant throughout the loop
+      assert(CandidateTysCopy[0] == OriginalElt && "Different Element");
+      unsigned VectorSize = DL.getTypeSizeInBits(VTy).getFixedValue();
+      unsigned ElementSize =
+          DL.getTypeSizeInBits(VTy->getElementType()).getFixedValue();
+      if (TypeSize != VectorSize && TypeSize != ElementSize &&
+          VectorSize % TypeSize == 0) {
+        VectorType *NewVTy = VectorType::get(Ty, VectorSize / TypeSize, false);
+        CheckCandidateType(NewVTy);
+      }
+    }
+  }
+
+  return checkVectorTypesForPromotion(P, DL, CandidateTys, HaveCommonEltTy,
+                                      CommonEltTy, HaveVecPtrTy,
+                                      HaveCommonVecPtrTy, CommonVecPtrTy);
+}
+
 /// Test whether the given alloca partitioning and range of slices can be
 /// promoted to a vector.
 ///
@@ -2271,6 +2306,7 @@ static VectorType *isVectorPromotionViable(Partition &P, const DataLayout &DL) {
   // we have different element types.
   SmallVector<VectorType *, 4> CandidateTys;
   SetVector<Type *> LoadStoreTys;
+  SetVector<Type *> DeferredTys;
   Type *CommonEltTy = nullptr;
   VectorType *CommonVecPtrTy = nullptr;
   bool HaveVecPtrTy = false;
@@ -2314,42 +2350,32 @@ static VectorType *isVectorPromotionViable(Partition &P, const DataLayout &DL) {
       Ty = SI->getValueOperand()->getType();
     else
       continue;
+
+    auto CandTy = Ty->getScalarType();
+    if (CandTy->isPointerTy() && (S.beginOffset() != P.beginOffset() ||
+                                  S.endOffset() != P.endOffset())) {
+      DeferredTys.insert(Ty);
+      continue;
+    }
+
     LoadStoreTys.insert(Ty);
     // Consider any loads or stores that are the exact size of the slice.
     if (S.beginOffset() == P.beginOffset() && S.endOffset() == P.endOffset())
       CheckCandidateType(Ty);
   }
 
-  if (auto *VTy = checkVectorTypesForPromotion(
-          P, DL, CandidateTys, HaveCommonEltTy, CommonEltTy, HaveVecPtrTy,
+  SmallVector<VectorType *, 4> CandidateTysCopy = CandidateTys;
+  if (auto *VTy = createAndCheckVectorTypesForPromotion(
+          LoadStoreTys, CandidateTysCopy, CheckCandidateType, P, DL,
+          CandidateTys, HaveCommonEltTy, CommonEltTy, HaveVecPtrTy,
           HaveCommonVecPtrTy, CommonVecPtrTy))
     return VTy;
 
-  // Consider additional vector types where the element type size is a
-  // multiple of load/store element size.
-  for (Type *Ty : LoadStoreTys) {
-    if (!VectorType::isValidElementType(Ty))
-      continue;
-    unsigned TypeSize = DL.getTypeSizeInBits(Ty).getFixedValue();
-    // Make a copy of CandidateTys and iterate through it, because we might
-    // append to CandidateTys in the loop.
-    SmallVector<VectorType *, 4> CandidateTysCopy = CandidateTys;
-    CandidateTys.clear();
-    for (VectorType *&VTy : CandidateTysCopy) {
-      unsigned VectorSize = DL.getTypeSizeInBits(VTy).getFixedValue();
-      unsigned ElementSize =
-          DL.getTypeSizeInBits(VTy->getElementType()).getFixedValue();
-      if (TypeSize != VectorSize && TypeSize != ElementSize &&
-          VectorSize % TypeSize == 0) {
-        VectorType *NewVTy = VectorType::get(Ty, VectorSize / TypeSize, false);
-        CheckCandidateType(NewVTy);
-      }
-    }
-  }
-
-  return checkVectorTypesForPromotion(P, DL, CandidateTys, HaveCommonEltTy,
-                                      CommonEltTy, HaveVecPtrTy,
-                                      HaveCommonVecPtrTy, CommonVecPtrTy);
+  CandidateTys.clear();
+  return createAndCheckVectorTypesForPromotion(
+      DeferredTys, CandidateTysCopy, CheckCandidateType, P, DL, CandidateTys,
+      HaveCommonEltTy, CommonEltTy, HaveVecPtrTy, HaveCommonVecPtrTy,
+      CommonVecPtrTy);
 }
 
 /// Test whether a slice of an alloca is valid for integer widening.
diff --git a/contrib/llvm-project/llvm/tools/llvm-mc/llvm-mc.cpp b/contrib/llvm-project/llvm/tools/llvm-mc/llvm-mc.cpp
index cf6aaa1f0698..2754d4964559 100644
--- a/contrib/llvm-project/llvm/tools/llvm-mc/llvm-mc.cpp
+++ b/contrib/llvm-project/llvm/tools/llvm-mc/llvm-mc.cpp
@@ -547,11 +547,6 @@ int main(int argc, char **argv) {
     std::unique_ptr<MCAsmBackend> MAB(
         TheTarget->createMCAsmBackend(*STI, *MRI, MCOptions));
     auto FOut = std::make_unique<formatted_raw_ostream>(*OS);
-    // FIXME: Workaround for bug in formatted_raw_ostream. Color escape codes
-    // are (incorrectly) written directly to the unbuffered raw_ostream wrapped
-    // by the formatted_raw_ostream.
-    if (Action == AC_CDisassemble)
-      FOut->SetUnbuffered();
     Str.reset(
         TheTarget->createAsmStreamer(Ctx, std::move(FOut), /*asmverbose*/ true,
                                      /*useDwarfDirectory*/ true, IP,
diff --git a/contrib/llvm-project/llvm/tools/llvm-objdump/llvm-objdump.cpp b/contrib/llvm-project/llvm/tools/llvm-objdump/llvm-objdump.cpp
index 22b427f57658..7ecdd60313d0 100644
--- a/contrib/llvm-project/llvm/tools/llvm-objdump/llvm-objdump.cpp
+++ b/contrib/llvm-project/llvm/tools/llvm-objdump/llvm-objdump.cpp
@@ -2032,13 +2032,6 @@ disassembleObject(ObjectFile &Obj, const ObjectFile &DbgObj,
 
       formatted_raw_ostream FOS(outs());
 
-      // FIXME: Workaround for bug in formatted_raw_ostream. Color escape codes
-      // are (incorrectly) written directly to the unbuffered raw_ostream
-      // wrapped by the formatted_raw_ostream.
-      if (DisassemblyColor == ColorOutput::Enable ||
-          DisassemblyColor == ColorOutput::Auto)
-        FOS.SetUnbuffered();
-
       std::unordered_map<uint64_t, std::string> AllLabels;
       std::unordered_map<uint64_t, std::vector<BBAddrMapLabel>> BBAddrMapLabels;
       if (SymbolizeOperands) {
diff --git a/contrib/llvm-project/llvm/tools/llvm-readobj/COFFImportDumper.cpp b/contrib/llvm-project/llvm/tools/llvm-readobj/COFFImportDumper.cpp
index 8aedc310ae3a..0ab2a1765565 100644
--- a/contrib/llvm-project/llvm/tools/llvm-readobj/COFFImportDumper.cpp
+++ b/contrib/llvm-project/llvm/tools/llvm-readobj/COFFImportDumper.cpp
@@ -45,8 +45,14 @@ void dumpCOFFImportFile(const COFFImportFile *File, ScopedPrinter &Writer) {
   case COFF::IMPORT_NAME_UNDECORATE:
     Writer.printString("Name type", "undecorate");
     break;
+  case COFF::IMPORT_NAME_EXPORTAS:
+    Writer.printString("Name type", "export as");
+    break;
   }
 
+  if (H->getNameType() != COFF::IMPORT_ORDINAL)
+    Writer.printString("Export name", File->getExportName());
+
   for (const object::BasicSymbolRef &Sym : File->symbols()) {
     raw_ostream &OS = Writer.startLine();
     OS << "Symbol: ";
diff --git a/contrib/llvm-project/llvm/utils/TableGen/MacroFusionPredicatorEmitter.cpp b/contrib/llvm-project/llvm/utils/TableGen/MacroFusionPredicatorEmitter.cpp
index 78dcd4471ae7..7f494e532b1f 100644
--- a/contrib/llvm-project/llvm/utils/TableGen/MacroFusionPredicatorEmitter.cpp
+++ b/contrib/llvm-project/llvm/utils/TableGen/MacroFusionPredicatorEmitter.cpp
@@ -152,8 +152,7 @@ void MacroFusionPredicatorEmitter::emitFirstPredicate(Record *Predicate,
         << "if (FirstDest.isVirtual() && !MRI.hasOneNonDBGUse(FirstDest))\n";
     OS.indent(4) << "  return false;\n";
     OS.indent(2) << "}\n";
-  } else if (Predicate->isSubClassOf(
-                 "FirstFusionPredicateWithMCInstPredicate")) {
+  } else if (Predicate->isSubClassOf("FusionPredicateWithMCInstPredicate")) {
     OS.indent(2) << "{\n";
     OS.indent(4) << "const MachineInstr *MI = FirstMI;\n";
     OS.indent(4) << "if (";
@@ -173,7 +172,7 @@ void MacroFusionPredicatorEmitter::emitFirstPredicate(Record *Predicate,
 void MacroFusionPredicatorEmitter::emitSecondPredicate(Record *Predicate,
                                                        PredicateExpander &PE,
                                                        raw_ostream &OS) {
-  if (Predicate->isSubClassOf("SecondFusionPredicateWithMCInstPredicate")) {
+  if (Predicate->isSubClassOf("FusionPredicateWithMCInstPredicate")) {
     OS.indent(2) << "{\n";
     OS.indent(4) << "const MachineInstr *MI = &SecondMI;\n";
     OS.indent(4) << "if (";
@@ -185,7 +184,7 @@ void MacroFusionPredicatorEmitter::emitSecondPredicate(Record *Predicate,
     OS.indent(2) << "}\n";
   } else {
     PrintFatalError(Predicate->getLoc(),
-                    "Unsupported predicate for first instruction: " +
+                    "Unsupported predicate for second instruction: " +
                         Predicate->getType()->getAsString());
   }
 }
@@ -196,9 +195,8 @@ void MacroFusionPredicatorEmitter::emitBothPredicate(Record *Predicate,
   if (Predicate->isSubClassOf("FusionPredicateWithCode"))
     OS << Predicate->getValueAsString("Predicate");
   else if (Predicate->isSubClassOf("BothFusionPredicateWithMCInstPredicate")) {
-    Record *MCPred = Predicate->getValueAsDef("Predicate");
-    emitFirstPredicate(MCPred, PE, OS);
-    emitSecondPredicate(MCPred, PE, OS);
+    emitFirstPredicate(Predicate, PE, OS);
+    emitSecondPredicate(Predicate, PE, OS);
   } else if (Predicate->isSubClassOf("TieReg")) {
     int FirstOpIdx = Predicate->getValueAsInt("FirstOpIdx");
     int SecondOpIdx = Predicate->getValueAsInt("SecondOpIdx");
diff --git a/contrib/llvm-project/openmp/runtime/src/kmp.h b/contrib/llvm-project/openmp/runtime/src/kmp.h
index 259c57b5afbc..46ee4c9fba71 100644
--- a/contrib/llvm-project/openmp/runtime/src/kmp.h
+++ b/contrib/llvm-project/openmp/runtime/src/kmp.h
@@ -818,6 +818,7 @@ private:
 typedef KMPAffinity::Mask kmp_affin_mask_t;
 extern KMPAffinity *__kmp_affinity_dispatch;
 
+#ifndef KMP_OS_AIX
 class kmp_affinity_raii_t {
   kmp_affin_mask_t *mask;
   bool restored;
@@ -842,6 +843,7 @@ public:
   }
   ~kmp_affinity_raii_t() { restore(); }
 };
+#endif // !KMP_OS_AIX
 
 // Declare local char buffers with this size for printing debug and info
 // messages, using __kmp_affinity_print_mask().
@@ -2506,7 +2508,7 @@ typedef struct kmp_depend_info {
   union {
     kmp_uint8 flag; // flag as an unsigned char
     struct { // flag as a set of 8 bits
-#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#if defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
       /* Same fields as in the #else branch, but in reverse order */
       unsigned all : 1;
       unsigned unused : 3;
@@ -2671,7 +2673,7 @@ typedef struct kmp_task_stack {
 #endif // BUILD_TIED_TASK_STACK
 
 typedef struct kmp_tasking_flags { /* Total struct must be exactly 32 bits */
-#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#if defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
   /* Same fields as in the #else branch, but in reverse order */
 #if OMPX_TASKGRAPH
   unsigned reserved31 : 6;
@@ -3911,7 +3913,7 @@ extern void __kmp_balanced_affinity(kmp_info_t *th, int team_size);
 #if KMP_WEIGHTED_ITERATIONS_SUPPORTED
 extern int __kmp_get_first_osid_with_ecore(void);
 #endif
-#if KMP_OS_LINUX || KMP_OS_FREEBSD
+#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_AIX
 extern int kmp_set_thread_affinity_mask_initial(void);
 #endif
 static inline void __kmp_assign_root_init_mask() {
diff --git a/contrib/llvm-project/openmp/runtime/src/kmp_affinity.cpp b/contrib/llvm-project/openmp/runtime/src/kmp_affinity.cpp
index 6a41d34b0237..1ac541fbcaa7 100644
--- a/contrib/llvm-project/openmp/runtime/src/kmp_affinity.cpp
+++ b/contrib/llvm-project/openmp/runtime/src/kmp_affinity.cpp
@@ -2906,12 +2906,17 @@ static inline const char *__kmp_cpuinfo_get_envvar() {
 }
 
 // Parse /proc/cpuinfo (or an alternate file in the same format) to obtain the
-// affinity map.
+// affinity map. On AIX, the map is obtained through system SRAD (Scheduler
+// Resource Allocation Domain).
 static bool __kmp_affinity_create_cpuinfo_map(int *line,
                                               kmp_i18n_id_t *const msg_id) {
+  *msg_id = kmp_i18n_null;
+
+#if KMP_OS_AIX
+  unsigned num_records = __kmp_xproc;
+#else
   const char *filename = __kmp_cpuinfo_get_filename();
   const char *envvar = __kmp_cpuinfo_get_envvar();
-  *msg_id = kmp_i18n_null;
 
   if (__kmp_affinity.flags.verbose) {
     KMP_INFORM(AffParseFilename, "KMP_AFFINITY", filename);
@@ -2970,6 +2975,7 @@ static bool __kmp_affinity_create_cpuinfo_map(int *line,
     *msg_id = kmp_i18n_str_CantRewindCpuinfo;
     return false;
   }
+#endif // KMP_OS_AIX
 
   // Allocate the array of records to store the proc info in.  The dummy
   // element at the end makes the logic in filling them out easier to code.
@@ -2999,6 +3005,99 @@ static bool __kmp_affinity_create_cpuinfo_map(int *line,
     INIT_PROC_INFO(threadInfo[i]);
   }
 
+#if KMP_OS_AIX
+  int smt_threads;
+  lpar_info_format1_t cpuinfo;
+  unsigned num_avail = __kmp_xproc;
+
+  if (__kmp_affinity.flags.verbose)
+    KMP_INFORM(AffParseFilename, "KMP_AFFINITY", "system info for topology");
+
+  // Get the number of SMT threads per core.
+  int retval =
+      lpar_get_info(LPAR_INFO_FORMAT1, &cpuinfo, sizeof(lpar_info_format1_t));
+  if (!retval)
+    smt_threads = cpuinfo.smt_threads;
+  else {
+    CLEANUP_THREAD_INFO;
+    *msg_id = kmp_i18n_str_UnknownTopology;
+    return false;
+  }
+
+  // Allocate a resource set containing available system resourses.
+  rsethandle_t sys_rset = rs_alloc(RS_SYSTEM);
+  if (sys_rset == NULL) {
+    CLEANUP_THREAD_INFO;
+    *msg_id = kmp_i18n_str_UnknownTopology;
+    return false;
+  }
+  // Allocate a resource set for the SRAD info.
+  rsethandle_t srad = rs_alloc(RS_EMPTY);
+  if (srad == NULL) {
+    rs_free(sys_rset);
+    CLEANUP_THREAD_INFO;
+    *msg_id = kmp_i18n_str_UnknownTopology;
+    return false;
+  }
+
+  // Get the SRAD system detail level.
+  int sradsdl = rs_getinfo(NULL, R_SRADSDL, 0);
+  if (sradsdl < 0) {
+    rs_free(sys_rset);
+    rs_free(srad);
+    CLEANUP_THREAD_INFO;
+    *msg_id = kmp_i18n_str_UnknownTopology;
+    return false;
+  }
+  // Get the number of RADs at that SRAD SDL.
+  int num_rads = rs_numrads(sys_rset, sradsdl, 0);
+  if (num_rads < 0) {
+    rs_free(sys_rset);
+    rs_free(srad);
+    CLEANUP_THREAD_INFO;
+    *msg_id = kmp_i18n_str_UnknownTopology;
+    return false;
+  }
+
+  // Get the maximum number of procs that may be contained in a resource set.
+  int max_procs = rs_getinfo(NULL, R_MAXPROCS, 0);
+  if (max_procs < 0) {
+    rs_free(sys_rset);
+    rs_free(srad);
+    CLEANUP_THREAD_INFO;
+    *msg_id = kmp_i18n_str_UnknownTopology;
+    return false;
+  }
+
+  int cur_rad = 0;
+  int num_set = 0;
+  for (int srad_idx = 0; cur_rad < num_rads && srad_idx < VMI_MAXRADS;
+       ++srad_idx) {
+    // Check if the SRAD is available in the RSET.
+    if (rs_getrad(sys_rset, srad, sradsdl, srad_idx, 0) < 0)
+      continue;
+
+    for (int cpu = 0; cpu < max_procs; cpu++) {
+      // Set the info for the cpu if it is in the SRAD.
+      if (rs_op(RS_TESTRESOURCE, srad, NULL, R_PROCS, cpu)) {
+        threadInfo[cpu][osIdIndex] = cpu;
+        threadInfo[cpu][pkgIdIndex] = cur_rad;
+        threadInfo[cpu][coreIdIndex] = cpu / smt_threads;
+        ++num_set;
+        if (num_set >= num_avail) {
+          // Done if all available CPUs have been set.
+          break;
+        }
+      }
+    }
+    ++cur_rad;
+  }
+  rs_free(sys_rset);
+  rs_free(srad);
+
+  // The topology is already sorted.
+
+#else // !KMP_OS_AIX
   unsigned num_avail = 0;
   *line = 0;
 #if KMP_ARCH_S390X
@@ -3246,6 +3345,8 @@ static bool __kmp_affinity_create_cpuinfo_map(int *line,
   qsort(threadInfo, num_avail, sizeof(*threadInfo),
         __kmp_affinity_cmp_ProcCpuInfo_phys_id);
 
+#endif // KMP_OS_AIX
+
   // The table is now sorted by pkgId / coreId / threadId, but we really don't
   // know the radix of any of the fields. pkgId's may be sparsely assigned among
   // the chips on a system. Although coreId's are usually assigned
@@ -4441,7 +4542,7 @@ static bool __kmp_aux_affinity_initialize_topology(kmp_affinity_t &affinity) {
     }
 #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */
 
-#if KMP_OS_LINUX
+#if KMP_OS_LINUX || KMP_OS_AIX
     if (!success) {
       int line = 0;
       success = __kmp_affinity_create_cpuinfo_map(&line, &msg_id);
@@ -4837,7 +4938,12 @@ void __kmp_affinity_uninitialize(void) {
   }
   if (__kmp_affin_origMask != NULL) {
     if (KMP_AFFINITY_CAPABLE()) {
+#if KMP_OS_AIX
+      // Uninitialize by unbinding the thread.
+      bindprocessor(BINDTHREAD, thread_self(), PROCESSOR_CLASS_ANY);
+#else
       __kmp_set_system_affinity(__kmp_affin_origMask, FALSE);
+#endif
     }
     KMP_CPU_FREE(__kmp_affin_origMask);
     __kmp_affin_origMask = NULL;
@@ -5011,7 +5117,10 @@ void __kmp_affinity_bind_init_mask(int gtid) {
     __kmp_set_system_affinity(th->th.th_affin_mask, FALSE);
   } else
 #endif
+#ifndef KMP_OS_AIX
+    // Do not set the full mask as the init mask on AIX.
     __kmp_set_system_affinity(th->th.th_affin_mask, TRUE);
+#endif
 }
 
 void __kmp_affinity_bind_place(int gtid) {
@@ -5124,7 +5233,7 @@ int __kmp_aux_set_affinity(void **mask) {
 int __kmp_aux_get_affinity(void **mask) {
   int gtid;
   int retval;
-#if KMP_OS_WINDOWS || KMP_DEBUG
+#if KMP_OS_WINDOWS || KMP_OS_AIX || KMP_DEBUG
   kmp_info_t *th;
 #endif
   if (!KMP_AFFINITY_CAPABLE()) {
@@ -5132,7 +5241,7 @@ int __kmp_aux_get_affinity(void **mask) {
   }
 
   gtid = __kmp_entry_gtid();
-#if KMP_OS_WINDOWS || KMP_DEBUG
+#if KMP_OS_WINDOWS || KMP_OS_AIX || KMP_DEBUG
   th = __kmp_threads[gtid];
 #else
   (void)gtid; // unused variable
@@ -5155,7 +5264,7 @@ int __kmp_aux_get_affinity(void **mask) {
     }
   }
 
-#if !KMP_OS_WINDOWS
+#if !KMP_OS_WINDOWS && !KMP_OS_AIX
 
   retval = __kmp_get_system_affinity((kmp_affin_mask_t *)(*mask), FALSE);
   KA_TRACE(
@@ -5175,7 +5284,7 @@ int __kmp_aux_get_affinity(void **mask) {
   KMP_CPU_COPY((kmp_affin_mask_t *)(*mask), th->th.th_affin_mask);
   return 0;
 
-#endif /* KMP_OS_WINDOWS */
+#endif /* !KMP_OS_WINDOWS && !KMP_OS_AIX */
 }
 
 int __kmp_aux_get_affinity_max_proc() {
@@ -5557,7 +5666,7 @@ void __kmp_balanced_affinity(kmp_info_t *th, int nthreads) {
   }
 }
 
-#if KMP_OS_LINUX || KMP_OS_FREEBSD
+#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_AIX
 // We don't need this entry for Windows because
 // there is GetProcessAffinityMask() api
 //
@@ -5592,7 +5701,11 @@ extern "C"
                 "set full mask for thread %d\n",
                 gtid));
   KMP_DEBUG_ASSERT(__kmp_affin_fullMask != NULL);
+#if KMP_OS_AIX
+  return bindprocessor(BINDTHREAD, thread_self(), PROCESSOR_CLASS_ANY);
+#else
   return __kmp_set_system_affinity(__kmp_affin_fullMask, FALSE);
+#endif
 }
 #endif
 
diff --git a/contrib/llvm-project/openmp/runtime/src/kmp_affinity.h b/contrib/llvm-project/openmp/runtime/src/kmp_affinity.h
index 5464259784e2..1fb70491a9ed 100644
--- a/contrib/llvm-project/openmp/runtime/src/kmp_affinity.h
+++ b/contrib/llvm-project/openmp/runtime/src/kmp_affinity.h
@@ -191,7 +191,7 @@ public:
 };
 #endif /* KMP_USE_HWLOC */
 
-#if KMP_OS_LINUX || KMP_OS_FREEBSD
+#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_AIX
 #if KMP_OS_LINUX
 /* On some of the older OS's that we build on, these constants aren't present
    in <asm/unistd.h> #included from <sys.syscall.h>. They must be the same on
@@ -314,6 +314,10 @@ public:
 #elif KMP_OS_FREEBSD
 #include <pthread.h>
 #include <pthread_np.h>
+#elif KMP_OS_AIX
+#include <sys/dr.h>
+#include <sys/rset.h>
+#define VMI_MAXRADS 64 // Maximum number of RADs allowed by AIX.
 #endif
 class KMPNativeAffinity : public KMPAffinity {
   class Mask : public KMPAffinity::Mask {
@@ -401,6 +405,70 @@ class KMPNativeAffinity : public KMPAffinity {
         ++retval;
       return retval;
     }
+#if KMP_OS_AIX
+    // On AIX, we don't have a way to get CPU(s) a thread is bound to.
+    // This routine is only used to get the full mask.
+    int get_system_affinity(bool abort_on_error) override {
+      KMP_ASSERT2(KMP_AFFINITY_CAPABLE(),
+                  "Illegal get affinity operation when not capable");
+
+      (void)abort_on_error;
+
+      // Set the mask with all CPUs that are available.
+      for (int i = 0; i < __kmp_xproc; ++i)
+        KMP_CPU_SET(i, this);
+      return 0;
+    }
+    int set_system_affinity(bool abort_on_error) const override {
+      KMP_ASSERT2(KMP_AFFINITY_CAPABLE(),
+
+                  "Illegal set affinity operation when not capable");
+
+      int location;
+      int gtid = __kmp_entry_gtid();
+      int tid = thread_self();
+
+      // Unbind the thread if it was bound to any processors before so that
+      // we can bind the thread to CPUs specified by the mask not others.
+      int retval = bindprocessor(BINDTHREAD, tid, PROCESSOR_CLASS_ANY);
+
+      // On AIX, we can only bind to one instead of a set of CPUs with the
+      // bindprocessor() system call.
+      KMP_CPU_SET_ITERATE(location, this) {
+        if (KMP_CPU_ISSET(location, this)) {
+          retval = bindprocessor(BINDTHREAD, tid, location);
+          if (retval == -1 && errno == 1) {
+            rsid_t rsid;
+            rsethandle_t rsh;
+            // Put something in rsh to prevent compiler warning
+            // about uninitalized use
+            rsh = rs_alloc(RS_EMPTY);
+            rsid.at_pid = getpid();
+            if (RS_DEFAULT_RSET != ra_getrset(R_PROCESS, rsid, 0, rsh)) {
+              retval = ra_detachrset(R_PROCESS, rsid, 0);
+              retval = bindprocessor(BINDTHREAD, tid, location);
+            }
+          }
+          if (retval == 0) {
+            KA_TRACE(10, ("__kmp_set_system_affinity:  Done binding "
+                          "T#%d to cpu=%d.\n",
+                          gtid, location));
+            continue;
+          }
+          int error = errno;
+          if (abort_on_error) {
+            __kmp_fatal(KMP_MSG(FunctionError, "bindprocessor()"),
+                        KMP_ERR(error), __kmp_msg_null);
+            KA_TRACE(10, ("__kmp_set_system_affinity:  Error binding "
+                          "T#%d to cpu=%d, errno=%d.\n",
+                          gtid, location, error));
+            return error;
+          }
+        }
+      }
+      return 0;
+    }
+#else // !KMP_OS_AIX
     int get_system_affinity(bool abort_on_error) override {
       KMP_ASSERT2(KMP_AFFINITY_CAPABLE(),
                   "Illegal get affinity operation when not capable");
@@ -443,6 +511,7 @@ class KMPNativeAffinity : public KMPAffinity {
       }
       return error;
     }
+#endif // KMP_OS_AIX
   };
   void determine_capable(const char *env_var) override {
     __kmp_affinity_determine_capable(env_var);
@@ -471,7 +540,7 @@ class KMPNativeAffinity : public KMPAffinity {
   }
   api_type get_api_type() const override { return NATIVE_OS; }
 };
-#endif /* KMP_OS_LINUX || KMP_OS_FREEBSD */
+#endif /* KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_AIX */
 
 #if KMP_OS_WINDOWS
 class KMPNativeAffinity : public KMPAffinity {
diff --git a/contrib/llvm-project/openmp/runtime/src/kmp_lock.h b/contrib/llvm-project/openmp/runtime/src/kmp_lock.h
index e2a0cda01a97..6202f3d617cc 100644
--- a/contrib/llvm-project/openmp/runtime/src/kmp_lock.h
+++ b/contrib/llvm-project/openmp/runtime/src/kmp_lock.h
@@ -120,7 +120,8 @@ extern void __kmp_validate_locks(void);
 
 struct kmp_base_tas_lock {
   // KMP_LOCK_FREE(tas) => unlocked; locked: (gtid+1) of owning thread
-#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ && __LP64__
+#if defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) &&     \
+    __LP64__
   // Flip the ordering of the high and low 32-bit member to be consistent
   // with the memory layout of the address in 64-bit big-endian.
   kmp_int32 depth_locked; // depth locked, for nested locks only
diff --git a/contrib/llvm-project/openmp/runtime/src/kmp_os.h b/contrib/llvm-project/openmp/runtime/src/kmp_os.h
index a0552dd930a6..9cd0aefaea2d 100644
--- a/contrib/llvm-project/openmp/runtime/src/kmp_os.h
+++ b/contrib/llvm-project/openmp/runtime/src/kmp_os.h
@@ -75,7 +75,8 @@
 #error Unknown compiler
 #endif
 
-#if (KMP_OS_LINUX || KMP_OS_WINDOWS || KMP_OS_FREEBSD) && !KMP_OS_WASI
+#if (KMP_OS_LINUX || KMP_OS_WINDOWS || KMP_OS_FREEBSD || KMP_OS_AIX) &&        \
+    !KMP_OS_WASI
 #define KMP_AFFINITY_SUPPORTED 1
 #if KMP_OS_WINDOWS && KMP_ARCH_X86_64
 #define KMP_GROUP_AFFINITY 1
diff --git a/contrib/llvm-project/openmp/runtime/src/z_Linux_util.cpp b/contrib/llvm-project/openmp/runtime/src/z_Linux_util.cpp
index 513ec6517d00..b9ff96873702 100644
--- a/contrib/llvm-project/openmp/runtime/src/z_Linux_util.cpp
+++ b/contrib/llvm-project/openmp/runtime/src/z_Linux_util.cpp
@@ -116,7 +116,7 @@ static void __kmp_print_cond(char *buffer, kmp_cond_align_t *cond) {
 }
 #endif
 
-#if ((KMP_OS_LINUX || KMP_OS_FREEBSD) && KMP_AFFINITY_SUPPORTED)
+#if ((KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_AIX) && KMP_AFFINITY_SUPPORTED)
 
 /* Affinity support */
 
@@ -132,6 +132,29 @@ void __kmp_affinity_bind_thread(int which) {
   KMP_CPU_FREE_FROM_STACK(mask);
 }
 
+#if KMP_OS_AIX
+void __kmp_affinity_determine_capable(const char *env_var) {
+  // All versions of AIX support bindprocessor().
+
+  size_t mask_size = __kmp_xproc / CHAR_BIT;
+  // Round up to byte boundary.
+  if (__kmp_xproc % CHAR_BIT)
+    ++mask_size;
+
+  // Round up to the mask_size_type boundary.
+  if (mask_size % sizeof(__kmp_affin_mask_size))
+    mask_size += sizeof(__kmp_affin_mask_size) -
+                 mask_size % sizeof(__kmp_affin_mask_size);
+  KMP_AFFINITY_ENABLE(mask_size);
+  KA_TRACE(10,
+           ("__kmp_affinity_determine_capable: "
+            "AIX OS affinity interface bindprocessor functional (mask size = "
+            "%" KMP_SIZE_T_SPEC ").\n",
+            __kmp_affin_mask_size));
+}
+
+#else // !KMP_OS_AIX
+
 /* Determine if we can access affinity functionality on this version of
  * Linux* OS by checking __NR_sched_{get,set}affinity system calls, and set
  * __kmp_affin_mask_size to the appropriate value (0 means not capable). */
@@ -259,8 +282,9 @@ void __kmp_affinity_determine_capable(const char *env_var) {
     KMP_WARNING(AffCantGetMaskSize, env_var);
   }
 }
-
-#endif // KMP_OS_LINUX && KMP_AFFINITY_SUPPORTED
+#endif // KMP_OS_AIX
+#endif // (KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_AIX) &&
+       // KMP_AFFINITY_SUPPORTED
 
 #if KMP_USE_FUTEX
 
@@ -476,7 +500,7 @@ static void *__kmp_launch_worker(void *thr) {
 #endif /* KMP_BLOCK_SIGNALS */
   void *exit_val;
 #if KMP_OS_LINUX || KMP_OS_DRAGONFLY || KMP_OS_FREEBSD || KMP_OS_NETBSD ||     \
-    KMP_OS_OPENBSD || KMP_OS_HURD || KMP_OS_SOLARIS
+    KMP_OS_OPENBSD || KMP_OS_HURD || KMP_OS_SOLARIS || KMP_OS_AIX
   void *volatile padding = 0;
 #endif
   int gtid;
@@ -525,7 +549,7 @@ static void *__kmp_launch_worker(void *thr) {
 #endif /* KMP_BLOCK_SIGNALS */
 
 #if KMP_OS_LINUX || KMP_OS_DRAGONFLY || KMP_OS_FREEBSD || KMP_OS_NETBSD ||     \
-    KMP_OS_OPENBSD || KMP_OS_HURD || KMP_OS_SOLARIS
+    KMP_OS_OPENBSD || KMP_OS_HURD || KMP_OS_SOLARIS || KMP_OS_AIX
   if (__kmp_stkoffset > 0 && gtid > 0) {
     padding = KMP_ALLOCA(gtid * __kmp_stkoffset);
     (void)padding;
@@ -1245,7 +1269,7 @@ static void __kmp_atfork_child(void) {
   ++__kmp_fork_count;
 
 #if KMP_AFFINITY_SUPPORTED
-#if KMP_OS_LINUX || KMP_OS_FREEBSD
+#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_AIX
   // reset the affinity in the child to the initial thread
   // affinity in the parent
   kmp_set_thread_affinity_mask_initial();
@@ -2214,6 +2238,7 @@ int __kmp_is_address_mapped(void *addr) {
   found = (int)addr < (__builtin_wasm_memory_size(0) * PAGESIZE);
 #elif KMP_OS_DRAGONFLY || KMP_OS_SOLARIS || KMP_OS_AIX
 
+  (void)rc;
   // FIXME(DragonFly, Solaris, AIX): Implement this
   found = 1;
 
diff --git a/lib/clang/include/VCSVersion.inc b/lib/clang/include/VCSVersion.inc
index da180cecd0ca..82f25ad621b6 100644
--- a/lib/clang/include/VCSVersion.inc
+++ b/lib/clang/include/VCSVersion.inc
@@ -1,8 +1,8 @@
-#define LLVM_REVISION "llvmorg-18.1.1-0-gdba2a75e9c7e"
+#define LLVM_REVISION "llvmorg-18.1.3-0-gc13b7485b879"
 #define LLVM_REPOSITORY "https://github.com/llvm/llvm-project.git"
 
-#define CLANG_REVISION "llvmorg-18.1.1-0-gdba2a75e9c7e"
+#define CLANG_REVISION "llvmorg-18.1.3-0-gc13b7485b879"
 #define CLANG_REPOSITORY "https://github.com/llvm/llvm-project.git"
 
-#define LLDB_REVISION "llvmorg-18.1.1-0-gdba2a75e9c7e"
+#define LLDB_REVISION "llvmorg-18.1.3-0-gc13b7485b879"
 #define LLDB_REPOSITORY "https://github.com/llvm/llvm-project.git"
diff --git a/lib/clang/include/clang/Basic/Version.inc b/lib/clang/include/clang/Basic/Version.inc
index 6e28151f8a06..782f047618b5 100644
--- a/lib/clang/include/clang/Basic/Version.inc
+++ b/lib/clang/include/clang/Basic/Version.inc
@@ -1,8 +1,8 @@
-#define	CLANG_VERSION			18.1.1
-#define	CLANG_VERSION_STRING		"18.1.1"
+#define	CLANG_VERSION			18.1.3
+#define	CLANG_VERSION_STRING		"18.1.3"
 #define	CLANG_VERSION_MAJOR		18
 #define	CLANG_VERSION_MAJOR_STRING	"18"
 #define	CLANG_VERSION_MINOR		1
-#define	CLANG_VERSION_PATCHLEVEL	1
+#define	CLANG_VERSION_PATCHLEVEL	3
 
 #define	CLANG_VENDOR			"FreeBSD "
diff --git a/lib/clang/include/lld/Common/Version.inc b/lib/clang/include/lld/Common/Version.inc
index e314863472f6..4115121ebc92 100644
--- a/lib/clang/include/lld/Common/Version.inc
+++ b/lib/clang/include/lld/Common/Version.inc
@@ -1,4 +1,4 @@
 // Local identifier in __FreeBSD_version style
 #define LLD_FREEBSD_VERSION 1500000
 
-#define LLD_VERSION_STRING "18.1.1 (FreeBSD llvmorg-18.1.1-0-gdba2a75e9c7e-" __XSTRING(LLD_FREEBSD_VERSION) ")"
+#define LLD_VERSION_STRING "18.1.3 (FreeBSD llvmorg-18.1.3-0-gc13b7485b879-" __XSTRING(LLD_FREEBSD_VERSION) ")"
diff --git a/lib/clang/include/lldb/Version/Version.inc b/lib/clang/include/lldb/Version/Version.inc
index 134bce0f32c8..7cef82df9e4f 100644
--- a/lib/clang/include/lldb/Version/Version.inc
+++ b/lib/clang/include/lldb/Version/Version.inc
@@ -1,6 +1,6 @@
-#define LLDB_VERSION 18.1.1
-#define LLDB_VERSION_STRING "18.1.1"
+#define LLDB_VERSION 18.1.3
+#define LLDB_VERSION_STRING "18.1.3"
 #define LLDB_VERSION_MAJOR 18
 #define LLDB_VERSION_MINOR 1
-#define LLDB_VERSION_PATCH 1
+#define LLDB_VERSION_PATCH 3
 /* #undef LLDB_FULL_VERSION_STRING */
diff --git a/lib/clang/include/llvm/Config/config.h b/lib/clang/include/llvm/Config/config.h
index 3adaae16913f..5cf49eceeced 100644
--- a/lib/clang/include/llvm/Config/config.h
+++ b/lib/clang/include/llvm/Config/config.h
@@ -344,10 +344,10 @@
 #define PACKAGE_NAME "LLVM"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "LLVM 18.1.1"
+#define PACKAGE_STRING "LLVM 18.1.3"
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "18.1.1"
+#define PACKAGE_VERSION "18.1.3"
 
 /* Define to the vendor of this package. */
 /* #undef PACKAGE_VENDOR */
diff --git a/lib/clang/include/llvm/Config/llvm-config.h b/lib/clang/include/llvm/Config/llvm-config.h
index 856bbf41d3a2..2b7d5b3e9504 100644
--- a/lib/clang/include/llvm/Config/llvm-config.h
+++ b/lib/clang/include/llvm/Config/llvm-config.h
@@ -180,10 +180,10 @@
 #define LLVM_VERSION_MINOR 1
 
 /* Patch version of the LLVM API */
-#define LLVM_VERSION_PATCH 1
+#define LLVM_VERSION_PATCH 3
 
 /* LLVM version string */
-#define LLVM_VERSION_STRING "18.1.1"
+#define LLVM_VERSION_STRING "18.1.3"
 
 /* Whether LLVM records statistics for use with GetStatistics(),
  * PrintStatistics() or PrintStatisticsJSON()
diff --git a/lib/clang/include/llvm/Support/VCSRevision.h b/lib/clang/include/llvm/Support/VCSRevision.h
index b8e8d52e709d..b1a8aef7de29 100644
--- a/lib/clang/include/llvm/Support/VCSRevision.h
+++ b/lib/clang/include/llvm/Support/VCSRevision.h
@@ -1,2 +1,2 @@
-#define LLVM_REVISION "llvmorg-18.1.1-0-gdba2a75e9c7e"
+#define LLVM_REVISION "llvmorg-18.1.3-0-gc13b7485b879"
 #define LLVM_REPOSITORY "https://github.com/llvm/llvm-project.git"