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Revert "Revert Don't create new comdats in CodeGen"

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This reverts commit r226173, adding r226038 back.

No change in this commit, but clang was changed to also produce trivial comdats for
costructors, destructors and vtables when needed.

Original message:

Don't create new comdats in CodeGen.

This patch stops the implicit creation of comdats during codegen.

Clang now sets the comdat explicitly when it is required. With this patch clang and gcc
now produce the same result in pr19848.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226242 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2015-01-16 02:22:55 +00:00
parent ce68afed3c
commit dfe88a08c7
15 changed files with 63 additions and 137 deletions
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2
lib/Target/XCore/XCoreAsmPrinter.cpp
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@@ -105,7 +105,6 @@ void XCoreAsmPrinter::emitArrayBound(MCSymbol *Sym, const GlobalVariable *GV) {
OutContext));
if (GV->hasWeakLinkage() || GV->hasLinkOnceLinkage() ||
GV->hasCommonLinkage()) {
// TODO Use COMDAT groups for LinkOnceLinkage
OutStreamer.EmitSymbolAttribute(SymGlob, MCSA_Weak);
}
}
@@ -140,7 +139,6 @@ void XCoreAsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) {
emitArrayBound(GVSym, GV);
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
// TODO Use COMDAT groups for LinkOnceLinkage
if (GV->hasWeakLinkage() || GV->hasLinkOnceLinkage() ||
GV->hasCommonLinkage())
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Weak);