[Webkit-unassigned] [Bug 249038] New: [WebAssembly SIMD] Emulate vector floating-point absolute value on Intel

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=249038

            Bug ID: 249038
           Summary: [WebAssembly SIMD] Emulate vector floating-point
                    absolute value on Intel
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebAssembly
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: d_degazio at apple.com
            Blocks: 246345

Intel doesn't have an instruction for SIMD floating-point absolute value, so the WASM f32x4.abs and f64x2.abs opcodes are currently unsupported. We can emulate this feature by generating a vector bitmask and using it to clear the sign bits for all elements in a vector.


Referenced Bugs:

https://bugs.webkit.org/show_bug.cgi?id=246345
[Bug 246345] [SIMD] Intel support
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