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

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128962 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2011-04-05 23:43:14 +00:00
parent 3e22897fa9
commit b3dd82670a
1 changed files with 2 additions and 1 deletions
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3
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());