Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: a2db78b8fdbef3caa09cb0165315ef552a073590
https://github.com/WebKit/WebKit/commit/a2db78b8fdbef3caa09cb0165315ef552a073590
Author: Justin Michaud <[email protected]>
Date: 2024-07-18 (Thu, 18 Jul 2024)
Changed paths:
M JSTests/wasm.yaml
M JSTests/wasm/stress/cc-int-to-int-tail-call.js
A JSTests/wasm/stress/simd-tail-call-simple.js
M JSTests/wasm/stress/simd-tail-calls-throw.js
A JSTests/wasm/stress/tail-call-double.js
A JSTests/wasm/stress/tail-call-js-inline.js
A JSTests/wasm/stress/tail-call-js.js
A JSTests/wasm/stress/tail-call-simple-int.js
A JSTests/wasm/stress/tail-call-simple.js
M JSTests/wasm/stress/tail-call.js
M Source/JavaScriptCore/assembler/MacroAssembler.cpp
M Source/JavaScriptCore/assembler/MacroAssembler.h
M Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp
M Source/JavaScriptCore/jit/CCallHelpers.h
M Source/JavaScriptCore/llint/WebAssembly.asm
M Source/JavaScriptCore/wasm/WasmOMGIRGenerator.cpp
Log Message:
-----------
WASM tail calls should work in OMG tier
https://bugs.webkit.org/show_bug.cgi?id=273875
Reviewed by Keith Miller.
Tom's original patch was correct, but we told him to elide moves to temporary
storage when they
weren't needed. Unfortunately, the current version on ToT clobbers a bunch of
important stuff. Let's
fix that.
We also fix up LLInt, since it had a bit of bit rot.
Finally, we add a new kind of tail call, a fake tail call, for the case when an
inlined call makes
a tail call.
There is still more work to be done to ensure that this code is correct; Tests
for stack traces,
inlined calls that clobber instance, and more advanced stack / regalloc
situations are all
still needed.
* JSTests/wasm/stress/simd-tail-call-simple.js: Added.
* JSTests/wasm/stress/tail-call-js.js: Added.
* JSTests/wasm/stress/tail-call-simple.js: Added.
* Source/JavaScriptCore/wasm/WasmOMGIRGenerator.cpp:
Canonical link: https://commits.webkit.org/281110@main
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