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 | 068b4ff5531062a0c6e93d038c24fcf209527406 (patch) | |
| tree | 94e567665996f8e6df723b3e45c51c789b7cc0c6 /lib/CodeGen/SimpleRegisterCoalescing.cpp | |
| parent | 59c0d4fcde6f112dd8e83293c6aa6b7138a05424 (diff) | |
Fix PR2568: Fix bug that cause redudant kill marker after its live interval has been extended due to coalescing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54346 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SimpleRegisterCoalescing.cpp')
| -rw-r--r-- | lib/CodeGen/SimpleRegisterCoalescing.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp index 68be3e111f..9cb06ced3f 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/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); } } |