diff options
Diffstat (limited to 'llvm/lib/CodeGen/MachineInstr.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachineInstr.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp index 4ac2896d370..006a10a0ce6 100644 --- a/llvm/lib/CodeGen/MachineInstr.cpp +++ b/llvm/lib/CodeGen/MachineInstr.cpp @@ -1041,6 +1041,9 @@ bool MachineInstr::addRegisterKilled(unsigned IncomingReg, if (MO.isKill()) // The register is already marked kill. return true; + if (isPhysReg && isRegTiedToDefOperand(i)) + // Two-address uses of physregs must not be marked kill. + return true; MO.setIsKill(); Found = true; } |
