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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-09-15 16:32:11 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-09-15 16:32:11 +0000 |
| commit | ab9baf7ff4b58b3905bccad68c8d2ab59ea4202b (patch) | |
| tree | 4adafd601ef132f6be103d9b9b6a9534357f8ea8 | |
| parent | 9ae03fa69f6bc19acd8043414160320c1da0c3da (diff) | |
Don't depend on kill flags in removeCopyByCommutingDef().
Kill flags are removed more and more aggressively during the register
allocation passes, it is better to get information from LiveIntervals.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163972 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/RegisterCoalescer.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/RegisterCoalescer.cpp b/lib/CodeGen/RegisterCoalescer.cpp index d018835456..f8165d3fe0 100644 --- a/lib/CodeGen/RegisterCoalescer.cpp +++ b/lib/CodeGen/RegisterCoalescer.cpp @@ -583,7 +583,7 @@ bool RegisterCoalescer::removeCopyByCommutingDef(const CoalescerPair &CP, MachineOperand &NewDstMO = DefMI->getOperand(NewDstIdx); unsigned NewReg = NewDstMO.getReg(); - if (NewReg != IntB.reg || !NewDstMO.isKill()) + if (NewReg != IntB.reg || !LiveRangeQuery(IntB, AValNo->def).isKill()) return false; // Make sure there are no other definitions of IntB that would reach the |