[MC][COFF] Emit weak symbols to the correct section. Patch by Dmitry Puzirev!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167877 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index 8f5d770..2ee9436 100644
--- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -701,8 +701,19 @@
const MCSection *TargetLoweringObjectFileCOFF::
getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const {
- return getContext().getCOFFSection(GV->getSection(),
- getCOFFSectionFlags(Kind),
+ int Selection = 0;
+ unsigned Characteristics = getCOFFSectionFlags(Kind);
+ SmallString<128> Name(GV->getSection().c_str());
+ if (GV->isWeakForLinker()) {
+ Selection = COFF::IMAGE_COMDAT_SELECT_ANY;
+ Characteristics |= COFF::IMAGE_SCN_LNK_COMDAT;
+ MCSymbol *Sym = Mang->getSymbol(GV);
+ Name.append("$");
+ Name.append(Sym->getName().begin() + 1, Sym->getName().end());
+ }
+ return getContext().getCOFFSection(Name,
+ Characteristics,
+ Selection,
Kind);
}