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Add .bitmask instruction family #201

Merged
merged 2 commits into from
May 28, 2020
Merged

Add .bitmask instruction family #201

merged 2 commits into from
May 28, 2020

Commits on May 26, 2020

  1. Add .bitmask instruction family 

    i8x16.bitmask and i32x4.bitmask directly map to SSE movemask
instructions; i16x8.bitmask can be synthesized using packs+movemask.

These instructions are important to be able to do lane-wise processing
after a vector comparison - for example, these can be used together with
ctz to find the index of the first lane with the matching values after a
comparison instruction.
    @zeux
    zeux committed May 26, 2020
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  2. Update opcode tables with bitmask

    @zeux
    zeux committed May 26, 2020
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