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Crankshaft: Fix error in range analysis of compare operations.

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Review URL: http://codereview.chromium.org/6658035

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7130 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
whesse@chromium.org 2011-03-10 13:34:56 +00:00
parent fc8f77e398
commit 7175dc09ef
1 changed files with 8 additions and 6 deletions
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2
src/hydrogen.cc
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@ -900,6 +900,7 @@ void HRangeAnalysis::InferControlFlowRange(HTest* test, HBasicBlock* dest) {
ASSERT((test->FirstSuccessor() == dest) == (test->SecondSuccessor() != dest)); ASSERT((test->FirstSuccessor() == dest) == (test->SecondSuccessor() != dest));
if (test->value()->IsCompare()) { if (test->value()->IsCompare()) {
HCompare* compare = HCompare::cast(test->value()); HCompare* compare = HCompare::cast(test->value());
if (compare->GetInputRepresentation().IsInteger32()) {
Token::Value op = compare->token(); Token::Value op = compare->token();
if (test->SecondSuccessor() == dest) { if (test->SecondSuccessor() == dest) {
op = Token::NegateCompareOp(op); op = Token::NegateCompareOp(op);
@ -909,6 +910,7 @@ void HRangeAnalysis::InferControlFlowRange(HTest* test, HBasicBlock* dest) {
InferControlFlowRange(inverted_op, compare->right(), compare->left()); InferControlFlowRange(inverted_op, compare->right(), compare->left());
} }
} }
}
// We know that value [op] other. Use this information to update the range on // We know that value [op] other. Use this information to update the range on