Merge llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp

master 2e10b7a39b9, the last commit before the llvmorg-12-init tag, from
which release/11.x was branched.

Note that for now, I rolled back all our local changes to make merging
easier, and I will reapply the still-relevant ones after updating to
11.0.0-rc1.

1 files changed, 26 insertions, 10 deletions

diff --git a/contrib/llvm-project/llvm/tools/llvm-size/llvm-size.cpp b/contrib/llvm-project/llvm/tools/llvm-size/llvm-size.cpp
index 46ece5a6f0c9..987270e98c48 100644
--- a/contrib/llvm-project/llvm/tools/llvm-size/llvm-size.cpp
+++ b/contrib/llvm-project/llvm/tools/llvm-size/llvm-size.cpp
@@ -187,20 +187,26 @@ static bool considerForSize(ObjectFile *Obj, SectionRef Section) {
   switch (static_cast<ELFSectionRef>(Section).getType()) {
   case ELF::SHT_NULL:
   case ELF::SHT_SYMTAB:
+    return false;
   case ELF::SHT_STRTAB:
   case ELF::SHT_REL:
   case ELF::SHT_RELA:
-    return false;
+    return static_cast<ELFSectionRef>(Section).getFlags() & ELF::SHF_ALLOC;
   }
   return true;
 }
 
 /// Total size of all ELF common symbols
-static uint64_t getCommonSize(ObjectFile *Obj) {
+static Expected<uint64_t> getCommonSize(ObjectFile *Obj) {
   uint64_t TotalCommons = 0;
-  for (auto &Sym : Obj->symbols())
-    if (Obj->getSymbolFlags(Sym.getRawDataRefImpl()) & SymbolRef::SF_Common)
+  for (auto &Sym : Obj->symbols()) {
+    Expected<uint32_t> SymFlagsOrErr =
+        Obj->getSymbolFlags(Sym.getRawDataRefImpl());
+    if (!SymFlagsOrErr)
+      return SymFlagsOrErr.takeError();
+    if (*SymFlagsOrErr & SymbolRef::SF_Common)
       TotalCommons += Obj->getCommonSymbolSize(Sym.getRawDataRefImpl());
+  }
   return TotalCommons;
 }
 
@@ -435,10 +441,14 @@ static void printObjectSectionSizes(ObjectFile *Obj) {
     }
 
     if (ELFCommons) {
-      uint64_t CommonSize = getCommonSize(Obj);
-      total += CommonSize;
-      outs() << format(fmt.str().c_str(), std::string("*COM*").c_str(),
-                       CommonSize, static_cast<uint64_t>(0));
+      if (Expected<uint64_t> CommonSizeOrErr = getCommonSize(Obj)) {
+        total += *CommonSizeOrErr;
+        outs() << format(fmt.str().c_str(), std::string("*COM*").c_str(),
+                         *CommonSizeOrErr, static_cast<uint64_t>(0));
+      } else {
+        error(CommonSizeOrErr.takeError(), Obj->getFileName());
+        return;
+      }
     }
 
     // Print total.
@@ -469,8 +479,14 @@ static void printObjectSectionSizes(ObjectFile *Obj) {
         total_bss += size;
     }
 
-    if (ELFCommons)
-      total_bss += getCommonSize(Obj);
+    if (ELFCommons) {
+      if (Expected<uint64_t> CommonSizeOrErr = getCommonSize(Obj))
+        total_bss += *CommonSizeOrErr;
+      else {
+        error(CommonSizeOrErr.takeError(), Obj->getFileName());
+        return;
+      }
+    }
 
     total = total_text + total_data + total_bss;