git: openjdk/jdk: master: 8347555: [REDO] C2: implement optimization for series of Add of unique value

[Roland Westrelin]

Changeset: f6d77cb3
Branch: master
Author:    Kangcheng Xu <kxu at openjdk.org>
Committer: Roland Westrelin <roland at openjdk.org>
Date:      2025-10-10 14:04:51 +0000
URL:       https://git.openjdk.org/jdk/commit/f6d77cb33299ae0636a2b52ee752f27e9ea9191b

8347555: [REDO] C2: implement optimization for series of Add of unique value

Reviewed-by: roland, epeter

! src/hotspot/share/opto/addnode.cpp
! src/hotspot/share/opto/addnode.hpp
! src/hotspot/share/utilities/globalDefinitions.hpp
! test/hotspot/gtest/utilities/test_java_arithmetic.cpp
+ test/hotspot/jtreg/compiler/c2/gvn/TestCollapsingSameTermAdditions.java
+ test/micro/org/openjdk/bench/vm/compiler/SerialAdditions.java