[jdk19] Integrated: 8288445: AArch64: C2 compilation fails with guarantee(!true || (true && (shift != 0))) failed: impossible encoding

Tue Jun 28 03:15:00 UTC 2022

On Fri, 17 Jun 2022 22:37:28 GMT, Dean Long <dlong at openjdk.org> wrote:

> The range for aarch64 vector right-shift is 1 to the element width.  This issue fixes the problem in the back-end.  There is a separate problem in the front-end that shift by 0 is not always optimized out.

This pull request has now been integrated.

Changeset: b4490386
Author:    Dean Long <dlong at openjdk.org>
URL:       https://git.openjdk.org/jdk19/commit/b4490386fe348250e88347526172c1c27ef01eba
Stats:     115 lines in 4 files changed: 83 ins; 0 del; 32 mod

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

Reviewed-by: thartmann, haosun, njian

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PR: https://git.openjdk.org/jdk19/pull/40