diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/RegisterCoalescer.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/RegisterCoalescer.cpp b/llvm/lib/CodeGen/RegisterCoalescer.cpp index 30b2686d620..1ef7e41b8ae 100644 --- a/llvm/lib/CodeGen/RegisterCoalescer.cpp +++ b/llvm/lib/CodeGen/RegisterCoalescer.cpp @@ -2685,8 +2685,8 @@ void JoinVals::pruneValues(JoinVals &Other, for (MachineOperand &MO : Indexes->getInstructionFromIndex(Def)->operands()) { if (MO.isReg() && MO.isDef() && MO.getReg() == Reg) { - if (MO.getSubReg() != 0) - MO.setIsUndef(EraseImpDef); + if (MO.getSubReg() != 0 && MO.isUndef() && !EraseImpDef) + MO.setIsUndef(false); MO.setIsDead(false); } } |
