git: openjdk/jdk: 8266528: Optimize C2 VerifyIterativeGVN execution time

[Jie Fu]

Changeset: 4023646e
Author:    Hui Shi <hshi at openjdk.org>
Committer: Jie Fu <jiefu at openjdk.org>
Date:      2021-05-22 11:51:37 +0000
URL:       https://git.openjdk.java.net/jdk/commit/4023646ed1bcb821b1d18f7e5104f04995e8171d

8266528: Optimize C2 VerifyIterativeGVN execution time

Reviewed-by: kvn, thartmann

! src/hotspot/share/opto/node.cpp
! src/hotspot/share/opto/node.hpp
! src/hotspot/share/opto/phaseX.cpp
! test/hotspot/jtreg/compiler/debug/TraceIterativeGVN.java