Bug 243888

Summary: [JSC] Air support in Armv7 will not use advanced SIMD FP registers
Product: WebKit Reporter: Joseph Griego <joseph.j.griego>
Component: JavaScriptCoreAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   

Joseph Griego
Reported 2022-08-12 11:29:34 PDT
Although there are advanced SIMD extensions to ARMv7 that add an extra 16 floating point registers--these can't be used as f32 operands and so we can't let Air use them without adjusting Air to have some idea about multiple classes of register within the FP bank--on currently supported architectures, any FP register is as good as any other for any operation. Only relevant after https://bugs.webkit.org/show_bug.cgi?id=241009 is resolved.
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Radar WebKit Bug Importer
Comment 1 2022-08-19 11:30:45 PDT
<rdar://problem/98891877>
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