Integrated: 8292338: aarch64: Use cbnz instruction in gen_continuation_enter when possible

Fei Yang fyang at openjdk.org
Tue Aug 16 07:20:57 UTC 2022


On Mon, 15 Aug 2022 01:52:35 GMT, Fei Yang <fyang at openjdk.org> wrote:

> This is a trivial improvement for gen_continuation_enter on AArch64.
> On AAch64, we can combine Compare and Branch on Zero/Nonzero into CBZ/CBNZ to save one instruction.
> Tier1 tested with fastdebug build on aarch64-linux-gnu.

This pull request has now been integrated.

Changeset: d1edda8f
Author:    Fei Yang <fyang at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/d1edda8ff52e172a85d102d7d5062b9cc401beea
Stats:     4 lines in 1 file changed: 0 ins; 2 del; 2 mod

8292338: aarch64: Use cbnz instruction in gen_continuation_enter when possible

Reviewed-by: haosun, shade, aph

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PR: https://git.openjdk.org/jdk/pull/9872


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