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Fix a compiler crash bootstrapping llvm-gcc. 

llvm-svn: 29989
This commit is contained in:
Chris Lattner 2006-08-30 23:02:29 +00:00
parent aea29af0bc
commit cb74860cce
1 changed files with 6 additions and 2 deletions
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8
llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
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@ -570,7 +570,7 @@ void LiveIntervals::handleRegisterDef(MachineBasicBlock *MBB,
else if (allocatableRegs_[reg]) {
handlePhysicalRegisterDef(MBB, MI, getOrCreateInterval(reg));
for (const unsigned* AS = mri_->getAliasSet(reg); *AS; ++AS)
handlePhysicalRegisterDef(MBB, MI, getOrCreateInterval(*AS));
handlePhysicalRegisterDef(MBB, MI, getOrCreateInterval(*AS), true);
}
}
@ -684,7 +684,11 @@ bool LiveIntervals::AdjustCopiesBackFrom(LiveInterval &IntA, LiveInterval &IntB,
if (ValLR+1 != BLR) return false;
DEBUG(std::cerr << "\nExtending: "; IntB.print(std::cerr, mri_));
// We are about to delete CopyMI, so need to remove it as the 'instruction
// that defines this value #'.
IntB.setInstDefiningValNum(BValNo, ~0U);
// Okay, we can merge them. We need to insert a new liverange:
// [ValLR.end, BLR.begin) of either value number, then we merge the
// two value numbers.