1 files changed, 28 insertions, 1 deletions
diff --git a/contrib/llvm-project/clang/lib/Driver/ToolChains/Fuchsia.cpp b/contrib/llvm-project/clang/lib/Driver/ToolChains/Fuchsia.cpp
index 94e025e3055a..8e086010a984 100644
--- a/contrib/llvm-project/clang/lib/Driver/ToolChains/Fuchsia.cpp
+++ b/contrib/llvm-project/clang/lib/Driver/ToolChains/Fuchsia.cpp
@@ -95,6 +95,8 @@ void fuchsia::Linker::ConstructJob(Compilation &C, const JobAction &JA,
     std::string Dyld = D.DyldPrefix;
     if (SanArgs.needsAsanRt() && SanArgs.needsSharedRt())
       Dyld += "asan/";
+    if (SanArgs.needsTsanRt() && SanArgs.needsSharedRt())
+      Dyld += "tsan/";
     Dyld += "ld.so.1";
     CmdArgs.push_back("-dynamic-linker");
     CmdArgs.push_back(Args.MakeArgString(Dyld));
@@ -165,7 +167,7 @@ void fuchsia::Linker::ConstructJob(Compilation &C, const JobAction &JA,
   }
 
   C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
-                                         Exec, CmdArgs, Inputs));
+                                         Exec, CmdArgs, Inputs, Output));
 }
 
 /// Fuchsia - Fuchsia tool chain which can call as(1) and ld(1) directly.
@@ -208,6 +210,23 @@ Fuchsia::Fuchsia(const Driver &D, const llvm::Triple &Triple,
                           .flag("+fsanitize=address")
                           .flag("-fexceptions")
                           .flag("+fno-exceptions"));
+  // Use the relative vtables ABI.
+  // TODO: Remove these multilibs once relative vtables are enabled by default
+  // for Fuchsia.
+  Multilibs.push_back(Multilib("relative-vtables", {}, {}, 4)
+                          .flag("+fexperimental-relative-c++-abi-vtables"));
+  Multilibs.push_back(Multilib("relative-vtables+noexcept", {}, {}, 5)
+                          .flag("+fexperimental-relative-c++-abi-vtables")
+                          .flag("-fexceptions")
+                          .flag("+fno-exceptions"));
+  Multilibs.push_back(Multilib("relative-vtables+asan", {}, {}, 6)
+                          .flag("+fexperimental-relative-c++-abi-vtables")
+                          .flag("+fsanitize=address"));
+  Multilibs.push_back(Multilib("relative-vtables+asan+noexcept", {}, {}, 7)
+                          .flag("+fexperimental-relative-c++-abi-vtables")
+                          .flag("+fsanitize=address")
+                          .flag("-fexceptions")
+                          .flag("+fno-exceptions"));
   Multilibs.FilterOut([&](const Multilib &M) {
     std::vector<std::string> RD = FilePaths(M);
     return std::all_of(RD.begin(), RD.end(), [&](std::string P) {
@@ -220,6 +239,13 @@ Fuchsia::Fuchsia(const Driver &D, const llvm::Triple &Triple,
       Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions, true),
       "fexceptions", Flags);
   addMultilibFlag(getSanitizerArgs().needsAsanRt(), "fsanitize=address", Flags);
+
+  addMultilibFlag(
+      Args.hasFlag(options::OPT_fexperimental_relative_cxx_abi_vtables,
+                   options::OPT_fno_experimental_relative_cxx_abi_vtables,
+                   /*default=*/false),
+      "fexperimental-relative-c++-abi-vtables", Flags);
+
   Multilibs.setFilePathsCallback(FilePaths);
 
   if (Multilibs.select(Flags, SelectedMultilib))
@@ -349,6 +375,7 @@ SanitizerMask Fuchsia::getSupportedSanitizers() const {
   Res |= SanitizerKind::Leak;
   Res |= SanitizerKind::SafeStack;
   Res |= SanitizerKind::Scudo;
+  Res |= SanitizerKind::Thread;
   return Res;
 }