Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: c4e675b3afdd1aa16c3d3d3bd38c503bece0df0f
https://github.com/WebKit/WebKit/commit/c4e675b3afdd1aa16c3d3d3bd38c503bece0df0f
Author: David Degazio <d_dega...@apple.com>
Date: 2023-06-08 (Thu, 08 Jun 2023)
Changed paths:
A JSTests/wasm/stress/simd-select.js
M Source/JavaScriptCore/b3/B3LowerToAir.cpp
Log Message:
-----------
B3 Select instruction truncates vector operands
https://bugs.webkit.org/show_bug.cgi?id=257842
rdar://108643371
Reviewed by Mark Lam, Justin Michaud and Yusuke Suzuki.
Fixes a bug where we would generate a double-precision conditional
move when lowering the Select B3 instruction on vector operands.
Since vector-sized conditional move isn't widely supported, we
transform the Select into a branch and moves during Air lowering
when the operands are vectors.
* JSTests/wasm/stress/simd-select.js: Added.
* Source/JavaScriptCore/b3/B3LowerToAir.cpp:
Canonical link: https://commits.webkit.org/264996@main
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