Integrated: 8316046: x64 platforms unecessarily save xmm16-31 when UseAVX >= 3

Jorn Vernee jvernee at openjdk.org
Tue Oct 24 12:36:45 UTC 2023


On Mon, 23 Oct 2023 11:37:08 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

> See JBS issue. We don't need to save xmm16+ on x64 platforms (which are currently saved in FFM upcall stubs). This is achieved simply by adding these registers to the volatile register lists of both ABIs.
> 
> Related: https://github.com/openjdk/jdk/pull/15688
> 
> Testing: `jdk_foreign`

This pull request has now been integrated.

Changeset: d1077d6f
Author:    Jorn Vernee <jvernee at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/d1077d6f141d6e51f697271286833e01013080d6
Stats:     6 lines in 2 files changed: 4 ins; 0 del; 2 mod

8316046: x64 platforms unecessarily save xmm16-31 when UseAVX >= 3

Reviewed-by: mcimadamore, djelinski

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PR: https://git.openjdk.org/jdk/pull/16307


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