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[WebAssembly] Compute known bits for SIMD bitmask intrinsics

Authored by tlively on Jul 29 2021, 1:46 PM.



This optimizes out the mask when the result of a bitmask is interpreted as an i8
or i16 value. Resolves PR50507.

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tlively created this revision.Jul 29 2021, 1:46 PM
tlively requested review of this revision.Jul 29 2021, 1:46 PM
Herald added a project: Restricted Project. · View Herald TranscriptJul 29 2021, 1:46 PM
aheejin accepted this revision.Aug 2 2021, 8:46 AM
aheejin added inline comments.
This revision is now accepted and ready to land.Aug 2 2021, 8:46 AM