Add support for allowing us to create uniquely identified "COMDAT" or "ELF

Group" sections while lowering. In particular, for ELF sections this is
useful for creating function-specific groups that get merged into the
same named section.

Also use const Twine& instead of StringRef for the getELF functions
while we're here.

Differential Revision: http://reviews.llvm.org/D21743

llvm-svn: 274336

1 files changed, 2 insertions, 4 deletions

diff --git a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index a8e854ecbee..5f814c957e9 100644
--- a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -69,11 +69,9 @@ void TargetLoweringObjectFileELF::emitPersonalityValue(
       cast<MCSymbolELF>(getContext().getOrCreateSymbol(NameData));
   Streamer.EmitSymbolAttribute(Label, MCSA_Hidden);
   Streamer.EmitSymbolAttribute(Label, MCSA_Weak);
-  StringRef Prefix = ".data.";
-  NameData.insert(NameData.begin(), Prefix.begin(), Prefix.end());
   unsigned Flags = ELF::SHF_ALLOC | ELF::SHF_WRITE | ELF::SHF_GROUP;
-  MCSection *Sec = getContext().getELFSection(NameData, ELF::SHT_PROGBITS,
-                                              Flags, 0, Label->getName());
+  MCSection *Sec = getContext().getELFNamedSection(".data", Label->getName(),
+                                                   ELF::SHT_PROGBITS, Flags, 0);
   unsigned Size = DL.getPointerSize();
   Streamer.SwitchSection(Sec);
   Streamer.EmitValueToAlignment(DL.getPointerABIAlignment());