[jdk17u-dev] Integrated: 8305959: x86: Improve itable_stub

[Dmitry Chuyko]

On Wed, 3 Jul 2024 09:56:24 GMT, Dmitry Chuyko <dchuyko at openjdk.org> wrote:

> This is a performance backport from 21. Original patch was applied mostly cleanly. Few bits required slight tuning. 
> 
> Straightforward replacements were made in in macroAssembler_x86.cpp because of missing JDK-8308396 refactoring (21):
> in_bytes(itableMethodEntry::method_offset()) to itableMethodEntry::method_offset_in_bytes(),
> in_bytes(itableOffsetEntry::interface_offset()) to itableOffsetEntry::interface_offset_in_bytes(),
> in_bytes(itableOffsetEntry::offset_offset()) to itableOffsetEntry::offset_offset_in_bytes().
> 
> One java import hunk was manually redone in the benchmark class.
> 
> Testing: linux x86 tier1,2; the benchmark shows improvements similar to original results.

This pull request has now been integrated.

Changeset: 3069e3e7
Author:    Dmitry Chuyko <dchuyko at openjdk.org>
Committer: Paul Hohensee <phh at openjdk.org>
URL:       https://git.openjdk.org/jdk17u-dev/commit/3069e3e7bc4e79cc98cf606370319fa2a67587ad
Stats:     295 lines in 5 files changed: 250 ins; 24 del; 21 mod

8305959: x86: Improve itable_stub

Reviewed-by: simonis
Backport-of: 8cdd95e8a2a7814ab7983fb3f41e6fa5793d410f

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PR: https://git.openjdk.org/jdk17u-dev/pull/2654