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Fix vector's Narrow intrinsics #81843

Merged
merged 1 commit into from
Feb 9, 2023
Merged

Fix vector's Narrow intrinsics #81843

merged 1 commit into from
Feb 9, 2023

Commits on Feb 8, 2023

  1. Fix vector's Narrow intrinsics 

    The BCL Vector classes have non-saturating Narrow methods, while wasm
instructions are saturating. AFAIK wasm doesn;t have non-saturating
narrow instructions. So instead of using

    i8x16.narrow_i16x8_s
    i8x16.narrow_i16x8_u
    i16x8.narrow_i32x4_s
    i16x8.narrow_i32x4_u

instructions, use `v8x16.shuffle` instruction to implement the extract
narrow operation.

This fixes `System.Numerics.Tests.GenericVectorTests.Narrow[U]Int*`
tests.
    @radekdoulik
    radekdoulik committed Feb 8, 2023
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