Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 444126aaa8125965e1e8315c57f1778fed8af390
https://github.com/WebKit/WebKit/commit/444126aaa8125965e1e8315c57f1778fed8af390
Author: Yusuke Suzuki <[email protected]>
Date: 2023-02-20 (Mon, 20 Feb 2023)
Changed paths:
M Source/JavaScriptCore/wasm/WasmBBQJIT.cpp
Log Message:
-----------
[JSC] Fix staturated conversion and compare64
https://bugs.webkit.org/show_bug.cgi?id=252623
rdar://105699589
Reviewed by Michael Saboff.
1. We should not allocate new scratch registers inside truncInBounds for x64
since they can be the same to resultLocation / operationLocation's FPRs.
And in that case, this does not work. Let's just pass already allocated FPRs.
2. We fix emitCompareI64. After `ImmHelpers::immLocation(lhsLocation,
rhsLocation) = Location::fromGPR(m_scratchGPR);`,
`ImmHelpers::immLocation(lhsLocation, rhsLocation)` can always return
lhsLocation,
since both locations are no longer imm.
* Source/JavaScriptCore/wasm/WasmBBQJIT.cpp:
(JSC::Wasm::BBQJIT::truncInBounds):
(JSC::Wasm::BBQJIT::truncTrapping):
(JSC::Wasm::BBQJIT::truncSaturated):
(JSC::Wasm::BBQJIT::emitCompareI64):
Canonical link: https://commits.webkit.org/260581@main
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