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Dead live-in detection bug.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34843 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-03-02 10:41:15 +00:00
parent c6214693a4
commit 7b466d0481
1 changed files with 2 additions and 2 deletions
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4
lib/CodeGen/LiveIntervalAnalysis.cpp
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@ -938,11 +938,11 @@ bool LiveIntervals::JoinCopy(MachineInstr *CopyMI,
if (JoinIntervals(DestInt, SrcInt)) { if (JoinIntervals(DestInt, SrcInt)) {
if (isDead) { if (isDead) {
// Result of the copy is dead. Propagate this property. // Result of the copy is dead. Propagate this property.
if (SrcStart == 0 && MRegisterInfo::isPhysicalRegister(SrcReg)) { if (SrcStart == 0 && MRegisterInfo::isPhysicalRegister(repSrcReg)) {
// Live-in to the function but dead. Remove it from MBB live-in set. // Live-in to the function but dead. Remove it from MBB live-in set.
// JoinIntervals may end up swapping the two intervals. // JoinIntervals may end up swapping the two intervals.
MachineBasicBlock *MBB = CopyMI->getParent(); MachineBasicBlock *MBB = CopyMI->getParent();
MBB->removeLiveIn(SrcReg); MBB->removeLiveIn(repSrcReg);
} else { } else {
MachineInstr *SrcMI = getInstructionFromIndex(SrcStart); MachineInstr *SrcMI = getInstructionFromIndex(SrcStart);
if (SrcMI) { if (SrcMI) {