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7068051: SIGSEGV in PhaseIdealLoop::build_loop_late_post

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Removed predicate cloning from loop peeling optimization and from split fall-in paths.

Reviewed-by: never
This commit is contained in:
Vladimir Kozlov 2011-07-29 09:16:29 -07:00
parent e30a679033
commit df8d608ac7
8 changed files with 33 additions and 138 deletions
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8
hotspot/src/share/vm/opto/ifnode.cpp
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@ -255,6 +255,14 @@ static Node* split_if(IfNode *iff, PhaseIterGVN *igvn) {
predicate_x = predicate_proj;
}
}
if (predicate_c != NULL && (req_c > 1)) {
assert(predicate_x == NULL, "only one predicate entry expected");
predicate_c = NULL; // Do not clone predicate below merge point
}
if (predicate_x != NULL && ((len - req_c) > 2)) {
assert(predicate_c == NULL, "only one predicate entry expected");
predicate_x = NULL; // Do not clone predicate below merge point
}
// Register the new RegionNodes but do not transform them. Cannot
// transform until the entire Region/Phi conglomerate has been hacked