diff options
| author | Chris Lattner <sabre@nondot.org> | 2010-05-07 21:49:09 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-05-07 21:49:09 +0000 |
| commit | 6e5ce287b0e53c264af0ba37169ad964e19b5bb7 (patch) | |
| tree | 8cdeb21cba6baeadca2bb4428765d0a584ea2af0 /lib/CodeGen/TargetLoweringObjectFileImpl.cpp | |
| parent | 9c00487dc33b21061a5daf3ef9c2455715683f3f (diff) | |
add COFF support for COMDAT sections, patch by Nathan Jeffords!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103304 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/TargetLoweringObjectFileImpl.cpp')
| -rw-r--r-- | lib/CodeGen/TargetLoweringObjectFileImpl.cpp | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp index b74ed567ae..00e1e83cf1 100644 --- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp +++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp @@ -912,11 +912,17 @@ getCOFFSectionFlags(SectionKind K) { unsigned Flags = 0; if (!K.isMetadata()) - Flags |= MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE; + Flags |= + MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE; else if (K.isText()) Flags |= MCSectionCOFF::IMAGE_SCN_MEM_EXECUTE | MCSectionCOFF::IMAGE_SCN_CNT_CODE; + else if (K.isBSS ()) + Flags |= + MCSectionCOFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA | + MCSectionCOFF::IMAGE_SCN_MEM_READ | + MCSectionCOFF::IMAGE_SCN_MEM_WRITE; else if (K.isReadOnly()) Flags |= MCSectionCOFF::IMAGE_SCN_CNT_INITIALIZED_DATA | @@ -941,6 +947,8 @@ getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind, static const char *getCOFFSectionPrefixForUniqueGlobal(SectionKind Kind) { if (Kind.isText()) return ".text$linkonce"; + if (Kind.isBSS ()) + return ".bss$linkonce"; if (Kind.isWriteable()) return ".data$linkonce"; return ".rdata$linkonce"; @@ -959,9 +967,13 @@ SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind, SmallString<128> Name(Prefix, Prefix+strlen(Prefix)); MCSymbol *Sym = Mang->getSymbol(GV); Name.append(Sym->getName().begin(), Sym->getName().end()); - return getContext().getCOFFSection(Name.str(), - getCOFFSectionFlags(Kind), - Kind); + + unsigned Characteristics = getCOFFSectionFlags(Kind); + + Characteristics |= MCSectionCOFF::IMAGE_SCN_LNK_COMDAT; + + return getContext().getCOFFSection(Name.str(), Characteristics, + MCSectionCOFF::IMAGE_COMDAT_SELECT_EXACT_MATCH, Kind); } if (Kind.isText()) |