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6659207: access violation in CompilerThread0

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Split_thru_phi produces top on a non-dead path

Reviewed-by: kvn, rasbold, sgoldman
This commit is contained in:
Tom Rodriguez 2008-03-18 23:54:17 -07:00
parent 8e1624d88c
commit 49434b6bad
2 changed files with 65 additions and 0 deletions
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5
hotspot/src/share/vm/opto/loopopts.cpp
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@ -29,6 +29,11 @@
//------------------------------split_thru_phi---------------------------------
// Split Node 'n' through merge point if there is enough win.
Node *PhaseIdealLoop::split_thru_phi( Node *n, Node *region, int policy ) {
if (n->Opcode() == Op_ConvI2L && n->bottom_type() != TypeLong::LONG) {
// ConvI2L may have type information on it which is unsafe to push up
// so disable this for now
return NULL;
}
int wins = 0;
assert( !n->is_CFG(), "" );
assert( region->is_Region(), "" );