diff options
| author | Evan Cheng <evan.cheng@apple.com> | 2008-08-05 07:10:38 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-08-05 07:10:38 +0000 |
| commit | 0ca10c957237df62851bedc13ac5dc414d1b1f99 (patch) | |
| tree | 0e9c2635beacb840b79fc8dbadd3be35208fa98f /llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp | |
| parent | d548c79eaff76a04b1710c4e82fb01afe653bff8 (diff) | |
Fix PR2568: Fix bug that cause redudant kill marker after its live interval has been extended due to coalescing.
llvm-svn: 54346
Diffstat (limited to 'llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp index 68be3e111fb2..9cb06ced3fe2 100644 --- a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -533,14 +533,16 @@ void SimpleRegisterCoalescing::RemoveUnnecessaryKills(unsigned Reg, MachineOperand &UseMO = UI.getOperand(); if (UseMO.isKill()) { MachineInstr *UseMI = UseMO.getParent(); +#if 0 unsigned SReg, DReg; if (!tii_->isMoveInstr(*UseMI, SReg, DReg)) continue; +#endif unsigned UseIdx = li_->getUseIndex(li_->getInstructionIndex(UseMI)); if (JoinedCopies.count(UseMI)) continue; const LiveRange *UI = LI.getLiveRangeContaining(UseIdx); - if (!LI.isKill(UI->valno, UseIdx+1)) + if (!UI || !LI.isKill(UI->valno, UseIdx+1)) UseMO.setIsKill(false); } } |