diff options
| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2009-08-02 19:13:03 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2009-08-02 19:13:03 +0000 |
| commit | c59cd9bcd094683529f63fde55589454fa0f7ce1 (patch) | |
| tree | dbaa045bcdd05eacba0a1a6513104e45b0224c7b /llvm/lib/CodeGen/MachineInstr.cpp | |
| parent | 4ab4f7f41649518a684ef340ccd77874fb56bc6e (diff) | |
Never add a kill flag to a constrained physical register in a two-addr instruction.
llvm-svn: 77906
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 4ac2896d370e..006a10a0ce69 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; } |