git: openjdk/jdk: 8281429: PhiNode::Value() is too conservative for tripcount of CountedLoop

[Roland Westrelin]

Changeset: fa1ca98f
Author:    Roland Westrelin <roland at openjdk.org>
Date:      2022-05-06 08:24:33 +0000
URL:       https://git.openjdk.java.net/jdk/commit/fa1ca98fff66fb91cfd5b00404645e0574d03101

8281429: PhiNode::Value() is too conservative for tripcount of CountedLoop

Reviewed-by: thartmann, kvn

! src/hotspot/share/opto/cfgnode.cpp
! src/hotspot/share/opto/loopTransform.cpp
! src/hotspot/share/opto/loopnode.cpp
+ test/hotspot/jtreg/compiler/c2/irTests/TestCountedLoopPhiValue.java
! test/hotspot/jtreg/compiler/c2/irTests/TestSkeletonPredicates.java
! test/hotspot/jtreg/compiler/lib/ir_framework/IRNode.java
+ test/hotspot/jtreg/compiler/loopopts/TestCountedLoopPhiValue.java