diff options
Diffstat (limited to 'llvm/lib/CodeGen/MachineCSE.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachineCSE.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/llvm/lib/CodeGen/MachineCSE.cpp b/llvm/lib/CodeGen/MachineCSE.cpp index d26d53d87ca..da63b41858e 100644 --- a/llvm/lib/CodeGen/MachineCSE.cpp +++ b/llvm/lib/CodeGen/MachineCSE.cpp @@ -623,10 +623,10 @@ bool MachineCSE::ProcessBlock(MachineBasicBlock *MBB) { // Go through implicit defs of CSMI and MI, and clear the kill flags on // their uses in all the instructions between CSMI and MI. // We might have made some of the kill flags redundant, consider: - // subs ... %nzcv<imp-def> <- CSMI - // csinc ... %nzcv<imp-use,kill> <- this kill flag isn't valid anymore - // subs ... %nzcv<imp-def> <- MI, to be eliminated - // csinc ... %nzcv<imp-use,kill> + // subs ... implicit-def %nzcv <- CSMI + // csinc ... implicit killed %nzcv <- this kill flag isn't valid anymore + // subs ... implicit-def %nzcv <- MI, to be eliminated + // csinc ... implicit killed %nzcv // Since we eliminated MI, and reused a register imp-def'd by CSMI // (here %nzcv), that register, if it was killed before MI, should have // that kill flag removed, because it's lifetime was extended. |
