git: openjdk/jdk25u-dev: master: 8370405: C2: mismatched store from MergeStores wrongly scalarized in allocation elimination

[Aleksey Shipilev]

Changeset: d1b5b9a5
Branch: master
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2025-12-03 07:57:54 +0000
URL:       https://git.openjdk.org/jdk25u-dev/commit/d1b5b9a592520096139bbc2906132ac16434f9ca

8370405: C2: mismatched store from MergeStores wrongly scalarized in allocation elimination

Backport-of: 09a047f00c88d14505c42a966dedbc87b9be5bdf

! src/hotspot/share/opto/macro.cpp
! src/hotspot/share/runtime/deoptimization.cpp
+ test/hotspot/jtreg/compiler/c2/TestMergeStoresAndAllocationElimination.java
+ test/hotspot/jtreg/compiler/escapeAnalysis/TestRematerializeObjects.java
! test/hotspot/jtreg/compiler/lib/ir_framework/IRNode.java