git: openjdk/jdk15u-dev: 8273359: CI: ciInstanceKlass::get_canonical_holder() doesn't respect instance size

[Yuri Nesterenko]

Changeset: a7a603c9
Author:    Yuri Nesterenko <yan at openjdk.org>
Date:      2022-01-25 09:37:00 +0000
URL:       https://git.openjdk.java.net/jdk15u-dev/commit/a7a603c94bf722457ae1a7f405ff206c4d62efdf

8273359: CI: ciInstanceKlass::get_canonical_holder() doesn't respect instance size

Reviewed-by: bae
Backport-of: f7e9f56e235dc50daae0a85c9790d5b04c9c60f0

! src/hotspot/share/c1/c1_LIRGenerator.cpp
! src/hotspot/share/ci/ciInstanceKlass.cpp
! src/hotspot/share/ci/ciInstanceKlass.hpp
! src/hotspot/share/opto/compile.cpp
+ test/hotspot/jtreg/compiler/unsafe/AlignmentGapAccess.java