git: openjdk/jdk: jdk26: 8351889: C2 crash: assertion failed: Base pointers must match (addp 344)

[Roland Westrelin]

Changeset: e0f1c3a7
Branch: jdk26
Author:    Roland Westrelin <roland at openjdk.org>
Date:      2026-01-09 08:39:46 +0000
URL:       https://git.openjdk.org/jdk/commit/e0f1c3a7463796afd0d67a1d57cc39f3a50c5cfd

8351889: C2 crash: assertion failed:  Base pointers must match (addp 344)

Reviewed-by: rcastanedalo, thartmann
Backport-of: ad29642d8f4e8e0fb1223b14b85ab7841d7b1b51

! src/hotspot/share/opto/addnode.hpp
! src/hotspot/share/opto/c2_globals.hpp
! src/hotspot/share/opto/cfgnode.cpp
! src/hotspot/share/opto/cfgnode.hpp
! src/hotspot/share/opto/compile.cpp
! src/hotspot/share/opto/phaseX.cpp
! src/hotspot/share/opto/phaseX.hpp
! src/hotspot/share/runtime/flags/jvmFlagConstraintsCompiler.cpp
+ test/hotspot/jtreg/compiler/c2/TestMismatchedAddPAfterMaxUnroll.java
! test/hotspot/jtreg/compiler/c2/TestVerifyIterativeGVN.java