diff options
Diffstat (limited to 'llvm/lib/Target/AArch64/AArch64PostCoalescerPass.cpp')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64PostCoalescerPass.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64PostCoalescerPass.cpp b/llvm/lib/Target/AArch64/AArch64PostCoalescerPass.cpp index cdf2822..a90950d 100644 --- a/llvm/lib/Target/AArch64/AArch64PostCoalescerPass.cpp +++ b/llvm/lib/Target/AArch64/AArch64PostCoalescerPass.cpp @@ -75,6 +75,10 @@ bool AArch64PostCoalescer::runOnMachineFunction(MachineFunction &MF) { if (Src != Dst) MRI->replaceRegWith(Dst, Src); + if (MI.getOperand(1).isUndef()) + for (MachineOperand &MO : MRI->use_operands(Dst)) + MO.setIsUndef(); + // MI must be erased from the basic block before recalculating the live // interval. LIS->RemoveMachineInstrFromMaps(MI); |