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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-07-03 00:04:37 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-07-03 00:04:37 +0000 |
| commit | 273f7e42994a5bce0614d04d96dbfdf05fd652e5 (patch) | |
| tree | 5963df402c4f6ba2641e0e869ddafa71fd5aa850 /lib/CodeGen/OptimizePHIs.cpp | |
| parent | 43b8fd728b889f15ea4c65ca957a7420ce2905cd (diff) | |
Detect and handle COPY in many places.
This code is transitional, it will soon be possible to eliminate
isExtractSubreg, isInsertSubreg, and isMoveInstr in most places.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107547 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/OptimizePHIs.cpp')
| -rw-r--r-- | lib/CodeGen/OptimizePHIs.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/CodeGen/OptimizePHIs.cpp b/lib/CodeGen/OptimizePHIs.cpp index 2717d4d5ce..1613fe21e4 100644 --- a/lib/CodeGen/OptimizePHIs.cpp +++ b/lib/CodeGen/OptimizePHIs.cpp @@ -107,6 +107,11 @@ bool OptimizePHIs::IsSingleValuePHICycle(MachineInstr *MI, SrcSubIdx == 0 && DstSubIdx == 0 && TargetRegisterInfo::isVirtualRegister(MvSrcReg)) SrcMI = MRI->getVRegDef(MvSrcReg); + else if (SrcMI && SrcMI->isCopy() && + !SrcMI->getOperand(0).getSubReg() && + !SrcMI->getOperand(1).getSubReg() && + TargetRegisterInfo::isVirtualRegister(SrcMI->getOperand(1).getReg())) + SrcMI = MRI->getVRegDef(SrcMI->getOperand(1).getReg()); if (!SrcMI) return false; |