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the latest assembler that runs on powerpc 10.4 machines doesn't

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support aligned comm.  Detect when compiling for 10.4 and don't
emit an alignment for comm.  THis will hopefully fix PR8198.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114817 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-09-27 06:44:54 +00:00
parent 80945784f9
commit 8048ebe91d
6 changed files with 40 additions and 2 deletions
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lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+10 -2
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@@ -282,8 +282,12 @@ void AsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) {
// Handle common symbols.
if (GVKind.isCommon()) {
unsigned Align = 1 << AlignLog;
if (!getObjFileLowering().getCommDirectiveSupportsAlignment())
Align = 0;
// .comm _foo, 42, 4
OutStreamer.EmitCommonSymbol(GVSym, Size, 1 << AlignLog);
OutStreamer.EmitCommonSymbol(GVSym, Size, Align);
return;
}
@@ -301,11 +305,15 @@ void AsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) {
OutStreamer.EmitLocalCommonSymbol(GVSym, Size);
return;
}
unsigned Align = 1 << AlignLog;
if (!getObjFileLowering().getCommDirectiveSupportsAlignment())
Align = 0;
// .local _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Local);
// .comm _foo, 42, 4
OutStreamer.EmitCommonSymbol(GVSym, Size, 1 << AlignLog);
OutStreamer.EmitCommonSymbol(GVSym, Size, Align);
return;
}