git: openjdk/jdk17u-dev: 8288445: AArch64: C2 compilation fails with guarantee(!true || (true && (shift != 0))) failed: impossible encoding

Tue Sep 6 16:44:30 UTC 2022

Changeset: 328ea9d0
Author:    Yi-Fan Tsai <yftsai at amazon.com>
Committer: Paul Hohensee <phh at openjdk.org>
Date:      2022-09-06 16:43:39 +0000
URL:       https://git.openjdk.org/jdk17u-dev/commit/328ea9d0ff13a2b3f8c539589aa13178c2f50007

8288445: AArch64: C2 compilation fails with guarantee(!true || (true && (shift != 0))) failed: impossible encoding

Reviewed-by: phh
Backport-of: b4490386fe348250e88347526172c1c27ef01eba

! src/hotspot/cpu/aarch64/aarch64.ad
! src/hotspot/cpu/aarch64/aarch64_neon.ad
! src/hotspot/cpu/aarch64/aarch64_neon_ad.m4
+ test/hotspot/jtreg/compiler/codegen/ShiftByZero.java