tree 0ebdaea36b1fcbde021c49b20b4e1ac976a613bf
parent ff22da48eb9ad08cd77d7073ed940620a12c8d85
author commit-queue@webkit.org <commit-queue@webkit.org@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1624902912 +0000
committer commit-queue@webkit.org <commit-queue@webkit.org@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1624902912 +0000

Add LLInt fast path for less, lesseq, greater and greatereq
https://bugs.webkit.org/show_bug.cgi?id=226266

Patch by Mikhail R. Gadelha <mikhail@igalia.com> on 2021-06-28
Reviewed by Tadeu Zagallo.

The motivation is to add fast path for integers and doubles
in LLInt, so we don't need to go to slow path for those cases.

This patch implements the less, lesseq, greater, greatereq
instruction for ARMv7, MIPS and CLoop.

Microbenchmarking results:
* x86_64: number-comparison-inline definitely 1.3520x faster
* ARMv7: number-comparison-inline definitely 1.3520x faster

JetStream2 results:
* x86_64 jit: 1.015 times better
* x86_64 no-jit: 1.018 times better
* ARMv7 no-jit: 1.004 times worse

* llint/LowLevelInterpreter.asm:
* llint/LowLevelInterpreter32_64.asm:
* llint/LowLevelInterpreter64.asm:
* offlineasm/arm.rb:
* offlineasm/cloop.rb:
* offlineasm/mips.rb:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@279343 268f45cc-cd09-0410-ab3c-d52691b4dbfc