Bug 252590

Summary: Fix entry tier-up SIMD check in BBQ baseline JIT
Product: WebKit Reporter: David Degazio <d_degazio>
Component: WebAssemblyAssignee: David Degazio <d_degazio>
Status: RESOLVED FIXED    
Severity: Normal CC: webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on:    
Bug Blocks: 252209    

Description David Degazio 2023-02-20 11:54:29 PST 
rdar://105689397

The OMG entry tier-up path clobbers GPRInfo::argumentGPR0 and GPRInfo::argumentGPR1, but while we will track argument locals as live currently, we don't actively spill to preserve them across the call in the new BBQ baseline JIT, only at the end of the current basic block. We also don't pass whether the current function is a SIMD function to the tier-up thunk generator.
Comment 1 David Degazio 2023-02-20 12:32:07 PST 
Looks like Yusuke beat me to the punch on the clobbers...I'll adapt this bug to track specifically the SIMD parameter.
Comment 2 David Degazio 2023-02-20 12:33:09 PST 
(fixing the argument register clobbering is tracked in https://bugs.webkit.org/show_bug.cgi?id=252591)
Comment 3 David Degazio 2023-02-20 12:40:12 PST 
Pull request: https://github.com/WebKit/WebKit/pull/10383
Comment 4 EWS 2023-02-20 13:17:06 PST 
Committed 260562@main (f6adb7641317): <https://commits.webkit.org/260562@main>

Reviewed commits have been landed. Closing PR #10383 and removing active labels.