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8272720: Fix the implementation of loop unrolling heuristic with LoopPercentProfileLimit

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Reviewed-by: thartmann, rbackman
This commit is contained in:
Jie Fu 2021-08-20 12:43:29 +00:00
parent 86add21a85
commit 1ea437a4b8
1 changed files with 1 additions and 1 deletions
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src/hotspot/share/opto/loopTransform.cpp
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@ -905,7 +905,7 @@ bool IdealLoopTree::policy_unroll(PhaseIdealLoop *phase) {
// Progress defined as current size less than 20% larger than previous size.
if (UseSuperWord && cl->node_count_before_unroll() > 0 &&
future_unroll_cnt > LoopUnrollMin &&
(future_unroll_cnt - 1) * (100 / LoopPercentProfileLimit) > cl->profile_trip_cnt() &&
(future_unroll_cnt - 1) * (100.0 / LoopPercentProfileLimit) > cl->profile_trip_cnt() &&
1.2 * cl->node_count_before_unroll() < (double)_body.size()) {
return false;
}