Fanchen Kong 28557e8c98 [WebAssembly] Improve codegen for shuffles with undefined lane indices ...

For undefined lane indices, fill the mask with {0..N} instead of zeros to allow
further reduction to word/dword shuffle on the VM.

Reviewed By: tlively, penzn

Differential Revision: https://reviews.llvm.org/D133473

2022-09-13 16:03:18 -07:00

7.2 KiB

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