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Revert "Remove references to INSERT_SUBREG after de-SSA" r107725.

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Buildbot breakage.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107744 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2010-07-07 00:32:25 +00:00
parent 78dfbc380d
commit 4b76ffc1ff
7 changed files with 136 additions and 9 deletions
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lib/CodeGen/LiveIntervalAnalysis.cpp
+6
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@@ -324,6 +324,12 @@ void LiveIntervals::handleVirtualRegisterDef(MachineBasicBlock *mbb,
if (mi->isCopyLike() ||
tii_->isMoveInstr(*mi, SrcReg, DstReg, SrcSubReg, DstSubReg)) {
CopyMI = mi;
// Some of the REG_SEQUENCE lowering in TwoAddressInstrPass creates
// implicit defs without really knowing. It shows up as INSERT_SUBREG
// using an undefined register.
if (mi->isInsertSubreg())
mi->getOperand(1).setIsUndef();
}
VNInfo *ValNo = interval.getNextValue(defIndex, CopyMI, true,