Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 700f6525d4cf86039f4771389dddbe111e0b15a1
https://github.com/WebKit/WebKit/commit/700f6525d4cf86039f4771389dddbe111e0b15a1
Author: David Degazio <[email protected]>
Date: 2023-03-30 (Thu, 30 Mar 2023)
Changed paths:
A JSTests/wasm/stress/foldable-division.js
M Source/JavaScriptCore/wasm/WasmBBQJIT.cpp
Log Message:
-----------
WasmBBQJIT performs redundant overflow check when dividend is constant
https://bugs.webkit.org/show_bug.cgi?id=254710
rdar://106823148
Reviewed by Yusuke Suzuki.
Always skip the integer division overflow check (specifically for the case
INT_MIN / -1)
in WasmBBQJIT when the left operand is a constant. This reduces the amount of
unnecessary
work checking for erroneous divisions, and also allows the general case to
assume neither
operand is a constant when emitting the check.
* JSTests/wasm/stress/foldable-division.js: Added.
(async test):
* Source/JavaScriptCore/wasm/WasmBBQJIT.cpp:
(JSC::Wasm::BBQJIT::emitModOrDiv):
Canonical link: https://commits.webkit.org/262335@main
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