diff options
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCInstrInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCInstrInfo.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp b/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp index 76f97b1ceaf..b6dc00f37b7 100644 --- a/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp +++ b/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp @@ -1763,6 +1763,10 @@ bool PPCInstrInfo::optimizeCompareInstr(MachineInstr *CmpInstr, get(TargetOpcode::COPY), CRReg) .addReg(PPC::CR0, MIOpC != NewOpC ? RegState::Kill : 0); + // Even if CR0 register were dead before, it is alive now since the + // instruction we just built uses it. + MI->clearRegisterDeads(PPC::CR0); + if (MIOpC != NewOpC) { // We need to be careful here: we're replacing one instruction with // another, and we need to make sure that we get all of the right |
