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Fixed debug_aranges handling for common symbols.

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The size of common symbols is now tracked correctly, so they can be listed in the arange section without needing knowledge of other following symbols.

.comm (and .lcomm) do not indicate to the system assembler any particular section to use, so we have to treat them as having no section.

Test case update to account for this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191210 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Mitton
2013-09-23 17:56:20 +00:00
parent 9528b0e466
commit eb46def978
5 changed files with 30 additions and 14 deletions
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15
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -2838,12 +2838,17 @@ void DwarfDebug::emitDebugARanges() {
Asm->EmitLabelReference(Span.Start, PtrSize);
// Calculate the size as being from the span start to it's end.
// If we have no valid end symbol, then we just cover the first byte.
// (this sucks, but I can't seem to figure out how to get the size)
if (Span.End)
if (Span.End) {
Asm->EmitLabelDifference(Span.End, Span.Start, PtrSize);
else
Asm->OutStreamer.EmitIntValue(1, PtrSize);
} else {
// For symbols without an end marker (e.g. common), we
// write a single arange entry containing just that one symbol.
uint64_t Size = SymSize[Span.Start];
if (Size == 0)
Size = 1;
Asm->OutStreamer.EmitIntValue(Size, PtrSize);
}
}
Asm->OutStreamer.AddComment("ARange terminator");