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Be more aggressive about renumbering vregs after splitting them.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62639 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson
2009-01-21 00:13:28 +00:00
parent 476615934a
commit 6cf7c390ec
2 changed files with 8 additions and 4 deletions
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10
lib/CodeGen/PreAllocSplitting.cpp
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@ -1127,9 +1127,11 @@ bool PreAllocSplitting::Rematerialize(unsigned vreg, VNInfo* ValNo,
LIs->InsertMachineInstrInMaps(prior(RestorePt), RestoreIdx);
if (KillPt->getParent() == BarrierMBB) {
UpdateRegisterInterval(ValNo, LIs->getUseIndex(KillIdx)+1,
VNInfo* After = UpdateRegisterInterval(ValNo, LIs->getUseIndex(KillIdx)+1,
LIs->getDefIndex(RestoreIdx));
RenumberValno(After);
++NumSplits;
++NumRemats;
return true;
@ -1312,9 +1314,11 @@ bool PreAllocSplitting::SplitRegLiveInterval(LiveInterval *LI) {
UpdateSpillSlotInterval(ValNo, LIs->getUseIndex(SpillIndex)+1,
LIs->getDefIndex(RestoreIndex));
UpdateRegisterInterval(ValNo, LIs->getUseIndex(SpillIndex)+1,
VNInfo* After = UpdateRegisterInterval(ValNo,
LIs->getUseIndex(SpillIndex)+1,
LIs->getDefIndex(RestoreIndex));
RenumberValno(After);
++NumSplits;
return true;
}