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It is safe to ignore LastSplitPoint when the variable is not live out. 

No code will be inserted after the split point anyway.

llvm-svn: 126319
This commit is contained in:
Jakob Stoklund Olesen 2011-02-23 18:26:31 +00:00
parent 4a4e0eb782
commit ed172998a6
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/CodeGen/SplitKit.cpp
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@ -961,10 +961,10 @@ void SplitEditor::splitSingleBlocks(const SplitAnalysis::BlockPtrSet &Blocks) {
openIntv();
SlotIndex SegStart = enterIntvBefore(BI.FirstUse);
if (BI.LastUse < BI.LastSplitPoint) {
if (!BI.LiveOut || BI.LastUse < BI.LastSplitPoint) {
useIntv(SegStart, leaveIntvAfter(BI.LastUse));
} else {
// THe last use os after tha last valid split point.
// The last use is after the last valid split point.
SlotIndex SegStop = leaveIntvBefore(BI.LastSplitPoint);
useIntv(SegStart, SegStop);
overlapIntv(SegStop, BI.LastUse);