diff options
Diffstat (limited to 'llvm/lib/CodeGen/TailDuplication.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/TailDuplication.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/TailDuplication.cpp b/llvm/lib/CodeGen/TailDuplication.cpp index 04b39922627..23f41c8dd4b 100644 --- a/llvm/lib/CodeGen/TailDuplication.cpp +++ b/llvm/lib/CodeGen/TailDuplication.cpp @@ -449,6 +449,9 @@ void TailDuplicatePass::DuplicateInstruction(MachineInstr *MI, DenseMap<unsigned, unsigned>::iterator VI = LocalVRMap.find(Reg); if (VI != LocalVRMap.end()) { MO.setReg(VI->second); + // Clear any kill flags from this operand. The new register could have + // uses after this one, so kills are not valid here. + MO.setIsKill(false); MRI->constrainRegClass(VI->second, MRI->getRegClass(Reg)); } } |
