diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/PeepholeOptimizer.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/PeepholeOptimizer.cpp b/llvm/lib/CodeGen/PeepholeOptimizer.cpp index 0fabc40b64e..f861edf7da2 100644 --- a/llvm/lib/CodeGen/PeepholeOptimizer.cpp +++ b/llvm/lib/CodeGen/PeepholeOptimizer.cpp @@ -1343,6 +1343,9 @@ bool PeepholeOptimizer::foldImmediate(MachineInstr *MI, MachineBasicBlock *MBB, MachineOperand &MO = MI->getOperand(i); if (!MO.isReg() || MO.isDef()) continue; + // Ignore dead implicit defs. + if (MO.isImplicit() && MO.isDead()) + continue; unsigned Reg = MO.getReg(); if (!TargetRegisterInfo::isVirtualRegister(Reg)) continue; @@ -1703,6 +1706,9 @@ ValueTrackerResult ValueTracker::getNextSourceFromBitcast() { const MachineOperand &MO = Def->getOperand(OpIdx); if (!MO.isReg() || !MO.getReg()) continue; + // Ignore dead implicit defs. + if (MO.isImplicit() && MO.isDead()) + continue; assert(!MO.isDef() && "We should have skipped all the definitions by now"); if (SrcIdx != EndOpIdx) // Multiple sources? |
