diff options
| 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 | 8d9d74eaa81b3fdc3e0ab47dc88673c2364558f9 (patch) | |
| tree | eb2e5d3c4c59beeaa5c33b79243726b4466d79e2 /lib | |
| parent | 3c999a270e14ddc82d22f23481aa27e0e007e5bd (diff) | |
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!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43381 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/X86RegisterInfo.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp index 72e0fe44b3..a7b98b528c 100644 --- a/lib/Target/X86/X86RegisterInfo.cpp +++ b/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)); |