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Windows TLS: Section name prefix to ensure correct order 

The linker sorts the .tls$<xyz> sections by name, and we need
to make sure any extra sections we produce (e.g. for weak globals) 
always end up between .tls$AAA and .tls$ZZZ, even if the name 
starts with e.g. an underscore.

Patch by David Nadlinger!

llvm-svn: 177256
This commit is contained in:
Anton Korobeynikov 2013-03-18 08:10:10 +00:00
parent 6f7ca81cce
commit 2810a0ab80
1 changed files with 5 additions and 2 deletions
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7
llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
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@ -742,8 +742,11 @@ static const char *getCOFFSectionPrefixForUniqueGlobal(SectionKind Kind) {
return ".text$";
if (Kind.isBSS ())
return ".bss$";
if (Kind.isThreadLocal())
return ".tls$";
if (Kind.isThreadLocal()) {
// 'LLVM' is just an arbitary string to ensure that the section name gets
// sorted in between '.tls$AAA' and '.tls$ZZZ' by the linker.
return ".tls$LLVM";
}
if (Kind.isWriteable())
return ".data$";
return ".rdata$";