[webkit-changes] [WebKit/WebKit] f357cb: [JSC] Fix floating point negation in WasmBBQJIT

[Yusuke Suzuki]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: f357cb4e99670559ebe83477f1ea80d56329acde
      https://github.com/WebKit/WebKit/commit/f357cb4e99670559ebe83477f1ea80d56329acde
  Author: Yusuke Suzuki <ysuzuki at apple.com>
  Date:   2023-03-02 (Thu, 02 Mar 2023)

  Changed paths:
    M Source/JavaScriptCore/wasm/WasmBBQJIT.cpp

  Log Message:
  -----------
  [JSC] Fix floating point negation in WasmBBQJIT
https://bugs.webkit.org/show_bug.cgi?id=253262
rdar://106161437

Reviewed by Justin Michaud.

This patch aligns WasmBBQJIT to exactly how f32 / f64 negation is implemented in Air.
This is required since wasm cares NaN's bit patterns.

* Source/JavaScriptCore/wasm/WasmBBQJIT.cpp:
(JSC::Wasm::BBQJIT::addF32Neg):
(JSC::Wasm::BBQJIT::addF64Neg):

Canonical link: https://commits.webkit.org/261102@main