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Allocating too large an array for ReachibilityMatrix.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29367 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-07-27 22:35:40 +00:00
parent 5fa5de80e2
commit b3c334674d
1 changed files with 5 additions and 2 deletions
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7
lib/Target/X86/X86ISelDAGToDAG.cpp
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@ -281,8 +281,11 @@ void X86DAGToDAGISel::DetermineTopologicalOrdering() {
void X86DAGToDAGISel::DeterminReachibility(SDNode *f, SDNode *t) { void X86DAGToDAGISel::DeterminReachibility(SDNode *f, SDNode *t) {
if (!ReachibilityMatrix) { if (!ReachibilityMatrix) {
DetermineTopologicalOrdering(); DetermineTopologicalOrdering();
ReachibilityMatrix = new unsigned char[DAGSize * DAGSize]; unsigned RMSize = DAGSize * DAGSize / 8;
memset(ReachibilityMatrix, 0, DAGSize * DAGSize * sizeof(unsigned char)); if ((DAGSize * DAGSize) % 8)
RMSize++;
ReachibilityMatrix = new unsigned char[RMSize];
memset(ReachibilityMatrix, 0, RMSize);
} }
int Idf = f->getNodeId(); int Idf = f->getNodeId();