diff options
Diffstat (limited to 'llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp b/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp index 8c1727724a9..7bf47ab6060 100644 --- a/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp +++ b/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp @@ -2277,9 +2277,9 @@ bool llvm::tryFoldSPUpdateIntoPushPop(const ARMSubtarget &Subtarget, --CurRegEnc) { unsigned CurReg = RegClass->getRegister(CurRegEnc); if (!IsPop) { - // Pushing any register is completely harmless, mark the - // register involved as undef since we don't care about it in - // the slightest. + // Pushing any register is completely harmless, mark the register involved + // as undef since we don't care about its value and must not restore it + // during stack unwinding. RegList.push_back(MachineOperand::CreateReg(CurReg, false, false, false, false, true)); --RegsNeeded; |
