Bug 275811

Summary: [Win] Use SystemV ABI for Wasm LLInt on Windows
Product: WebKit Reporter: Ian Grunert <ian.grunert>
Component: JavaScriptCoreAssignee: Nobody <webkit-unassigned>
Status: RESOLVED FIXED    
Severity: Normal CC: Hironori.Fujii, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: PC   
OS: Windows 10   

Description Ian Grunert 2024-06-24 07:47:13 PDT 
clang-cl gives us the option of changing a function to use the SystemV ABI:

https://clang.llvm.org/docs/AttributeReference.html#sysv-abi

By using this on functions on the C++ / JIT boundaries, we can use the same codepaths for function calls and the same register mappings between Windows and Linux / Mac / BSD.

JS LLInt was completed in bug 274064 and Baseline JIT in bug 275213 so there's no blockers for this.
Comment 1 Ian Grunert 2024-06-24 20:11:30 PDT 
Pull request: https://github.com/WebKit/WebKit/pull/30116
Comment 2 EWS 2024-06-25 08:16:19 PDT 
Committed 280334@main (e65584915c8f): <https://commits.webkit.org/280334@main>

Reviewed commits have been landed. Closing PR #30116 and removing active labels.
Comment 3 Radar WebKit Bug Importer 2024-06-25 08:17:15 PDT 
<rdar://problem/130505394>