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Don't crash when a value is defined after the last split point. 

llvm-svn: 128962
This commit is contained in:
Jakob Stoklund Olesen 2011-04-05 23:43:14 +00:00
parent 30b5473d82
commit 5c482cd38f
1 changed files with 2 additions and 1 deletions
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3
llvm/lib/CodeGen/SplitKit.cpp
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@ -673,7 +673,8 @@ void SplitEditor::overlapIntv(SlotIndex Start, SlotIndex End) {
"Range cannot span basic blocks");
// The complement interval will be extended as needed by extendRange().
markComplexMapped(0, ParentVNI);
if (ParentVNI)
markComplexMapped(0, ParentVNI);
DEBUG(dbgs() << " overlapIntv [" << Start << ';' << End << "):");
RegAssign.insert(Start, End, OpenIdx);
DEBUG(dump());