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| author | Dan Gohman <gohman@apple.com> | 2010-05-13 20:34:42 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-05-13 20:34:42 +0000 |
| commit | a858f3e98f4ebe01e1e9fb3f1733dbcd4799d452 (patch) | |
| tree | d5f6dc0117786538e247416458b5f8fb9bed5367 /lib/CodeGen/MachineSink.cpp | |
| parent | 377fe4161dd5ee1602959bff10c05bd57dfbf212 (diff) | |
| download | external_llvm-a858f3e98f4ebe01e1e9fb3f1733dbcd4799d452.tar.gz external_llvm-a858f3e98f4ebe01e1e9fb3f1733dbcd4799d452.tar.bz2 external_llvm-a858f3e98f4ebe01e1e9fb3f1733dbcd4799d452.zip | |
Teach MachineLICM and MachineSink how to clear kill flags conservatively
when they move instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103737 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineSink.cpp')
| -rw-r--r-- | lib/CodeGen/MachineSink.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/CodeGen/MachineSink.cpp b/lib/CodeGen/MachineSink.cpp index ef489dc556..1610e6c961 100644 --- a/lib/CodeGen/MachineSink.cpp +++ b/lib/CodeGen/MachineSink.cpp @@ -314,5 +314,10 @@ bool MachineSinking::SinkInstruction(MachineInstr *MI, bool &SawStore) { // Move the instruction. SuccToSinkTo->splice(InsertPos, ParentBlock, MI, ++MachineBasicBlock::iterator(MI)); + + // Conservatively, clear any kill flags, since it's possible that + // they are no longer correct. + MI->clearKillInfo(); + return true; } |