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DebugInfo: Emit DW_TAG_subprogram's DW_AT_high_pc as an offset from the low_pc

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This removes a relocation from each subprogram, reducing link times,
etc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203187 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie
2014-03-07 01:30:55 +00:00
parent e2bb4f48ad
commit 34fa5640b8
5 changed files with 14 additions and 3 deletions
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3
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@@ -413,7 +413,8 @@ DIE *DwarfDebug::updateSubprogramScopeDIE(DwarfCompileUnit *SPCU,
}
SPCU->addLabelAddress(SPDie, dwarf::DW_AT_low_pc, FunctionBeginSym);
SPCU->addLabelAddress(SPDie, dwarf::DW_AT_high_pc, FunctionEndSym);
SPCU->addLabelDelta(SPDie, dwarf::DW_AT_high_pc, FunctionEndSym,
FunctionBeginSym);
const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
MachineLocation Location(RI->getFrameRegister(*Asm->MF));