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5091921: Sign flip issues in loop optimizer

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Fix integer overflow problem in the code generated by loop optimizer.

Reviewed-by: never
This commit is contained in:
Vladimir Kozlov 2011-05-04 13:12:42 -07:00
parent 1e12174562
commit 1ac79543d0
40 changed files with 4195 additions and 214 deletions
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2
hotspot/src/share/vm/opto/parse1.cpp
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@ -638,7 +638,7 @@ void Parse::do_all_blocks() {
ensure_phis_everywhere();
if (block->is_SEL_head() &&
UseLoopPredicate) {
(UseLoopPredicate || LoopLimitCheck)) {
// Add predicate to single entry (not irreducible) loop head.
assert(!block->has_merged_backedge(), "only entry paths should be merged for now");
// Need correct bci for predicate.