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| author | Anton Korobeynikov <asl@math.spbu.ru> | 2007-10-26 09:13:24 +0000 |
|---|---|---|
| committer | Anton Korobeynikov <asl@math.spbu.ru> | 2007-10-26 09:13:24 +0000 |
| commit | d07d6a411caafed14598eed9b50e189ae428aa0a (patch) | |
| tree | 5f148b085362cbfe4f7442ec959d23f3141c62fc /llvm/lib/Target/X86/X86RegisterInfo.cpp | |
| parent | 18063916b5eb81d11e4c36755ae447ecd710fdc1 (diff) | |
| download | bcm5719-llvm-d07d6a411caafed14598eed9b50e189ae428aa0a.tar.gz bcm5719-llvm-d07d6a411caafed14598eed9b50e189ae428aa0a.zip | |
Fix off-by-one stack offset computations (dwarf information) for callee-saved
registers in case, when FP pointer was eliminated. This should fixes misc. random
EH-related crahses, when stuff is compiled with -fomit-frame-pointer.
Thanks Duncan for nailing this bug!
llvm-svn: 43381
Diffstat (limited to 'llvm/lib/Target/X86/X86RegisterInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86RegisterInfo.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86RegisterInfo.cpp b/llvm/lib/Target/X86/X86RegisterInfo.cpp index 72e0fe44b30..a7b98b528ce 100644 --- a/llvm/lib/Target/X86/X86RegisterInfo.cpp +++ b/llvm/lib/Target/X86/X86RegisterInfo.cpp @@ -1816,10 +1816,11 @@ void X86RegisterInfo::emitPrologue(MachineFunction &MF) const { MFI->getObjectOffset(CSI[I].getFrameIdx())); // Calculate offsets + int64_t saveAreaOffset = (hasFP(MF) ? 3 : 2)*stackGrowth; for (unsigned I = 0, E = CSI.size(); I!=E; ++I) { int64_t Offset = MFI->getObjectOffset(CSI[I].getFrameIdx()); unsigned Reg = CSI[I].getReg(); - Offset = (MaxOffset-Offset+3*stackGrowth); + Offset = (MaxOffset-Offset+saveAreaOffset); MachineLocation CSDst(MachineLocation::VirtualFP, Offset); MachineLocation CSSrc(Reg); Moves.push_back(MachineMove(FrameLabelId, CSDst, CSSrc)); |
