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[JSC] Use VectorLoadXSplat in B3 #9984

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Constellation
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@Constellation Constellation commented Feb 11, 2023

@Constellation Constellation requested a review from a team as a code owner February 11, 2023 23:36
@Constellation Constellation self-assigned this Feb 11, 2023
@Constellation Constellation added the JavaScriptCore For bugs in JavaScriptCore, the JS engine used by WebKit, other than kxmlcore issues. label Feb 11, 2023
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r=me

@Constellation Constellation added the unsafe-merge-queue Applied to send a pull request to merge-queue, but skip building and testing label Feb 13, 2023
https://bugs.webkit.org/show_bug.cgi?id=252120
rdar://105341630

Reviewed by Keith Miller.

This patch uses VectorLoadXSplat for VectorSplat(LoadX) pattern.
For SIMDLoadSplat wasm opcodes, we are emitting VectorSplat(LoadX) in B3.
But we were not successfully converting it to VectorLoadXSplat for Air.
This patch adds lowering for them so that we emit VectorLoadXSplat.

* Source/JavaScriptCore/b3/B3LowerToAir.cpp:

Canonical link: https://commits.webkit.org/260206@main
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Committed 260206@main (44bf338): https://commits.webkit.org/260206@main

Reviewed commits have been landed. Closing PR #9984 and removing active labels.

@webkit-early-warning-system webkit-early-warning-system merged commit 44bf338 into WebKit:main Feb 13, 2023
@webkit-commit-queue webkit-commit-queue removed the unsafe-merge-queue Applied to send a pull request to merge-queue, but skip building and testing label Feb 13, 2023
@Constellation Constellation deleted the eng/JSC-Use-VectorLoadXSplat-in-B3 branch February 14, 2023 06:57
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