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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 | 4c82a9e7d041c69528a715edaf4cc4bc1017e646 (patch) | |
| tree | 507212f1a595b90b230f8441d629605ee50230f1 /llvm/lib/CodeGen/OptimizePHIs.cpp | |
| parent | ece6906ea0e3e189e6a2a94c9fd10cbadd7d368b (diff) | |
| download | bcm5719-llvm-4c82a9e7d041c69528a715edaf4cc4bc1017e646.tar.gz bcm5719-llvm-4c82a9e7d041c69528a715edaf4cc4bc1017e646.zip | |
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.
llvm-svn: 107547
Diffstat (limited to 'llvm/lib/CodeGen/OptimizePHIs.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/OptimizePHIs.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/OptimizePHIs.cpp b/llvm/lib/CodeGen/OptimizePHIs.cpp index 2717d4d5cef..1613fe21e42 100644 --- a/llvm/lib/CodeGen/OptimizePHIs.cpp +++ b/llvm/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; |
