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Don't use EmitAbsValue with symbol references.

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The function exists to force an expression to be absolute, but there it is not
possible to force a symbol reference since

a = b
.long a

means something else.

This is an alternative fix for pr9951 that uses an assert. It then deletes
the old pr9951 test that was testing nothing already.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204399 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2014-03-20 21:26:38 +00:00
parent 20425d92df
commit ec5fd32a0b
3 changed files with 6 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
lib/MC/MCDwarf.cpp
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@@ -619,7 +619,7 @@ static void EmitGenDwarfAranges(MCStreamer *MCOS,
context.getGenDwarfSectionStartSym(), MCSymbolRefExpr::VK_None, context);
const MCExpr *Size = MakeStartMinusEndExpr(*MCOS,
*context.getGenDwarfSectionStartSym(), *SectionEndSym, 0);
MCOS->EmitAbsValue(Addr, AddrSize);
MCOS->EmitValue(Addr, AddrSize);
MCOS->EmitAbsValue(Size, AddrSize);
// And finally the pair of terminating zeros.
@@ -682,12 +682,12 @@ static void EmitGenDwarfInfo(MCStreamer *MCOS,
// AT_low_pc, the first address of the default .text section.
const MCExpr *Start = MCSymbolRefExpr::Create(
context.getGenDwarfSectionStartSym(), MCSymbolRefExpr::VK_None, context);
MCOS->EmitAbsValue(Start, AddrSize);
MCOS->EmitValue(Start, AddrSize);
// AT_high_pc, the last address of the default .text section.
const MCExpr *End = MCSymbolRefExpr::Create(
context.getGenDwarfSectionEndSym(), MCSymbolRefExpr::VK_None, context);
MCOS->EmitAbsValue(End, AddrSize);
MCOS->EmitValue(End, AddrSize);
// AT_name, the name of the source file. Reconstruct from the first directory
// and file table entries.
@@ -756,7 +756,7 @@ static void EmitGenDwarfInfo(MCStreamer *MCOS,
// AT_low_pc, start address of the label.
const MCExpr *AT_low_pc = MCSymbolRefExpr::Create(Entry->getLabel(),
MCSymbolRefExpr::VK_None, context);
MCOS->EmitAbsValue(AT_low_pc, AddrSize);
MCOS->EmitValue(AT_low_pc, AddrSize);
// DW_AT_prototyped, a one byte flag value of 0 saying we have no prototype.
MCOS->EmitIntValue(0, 1);