Thomas Lively ecb2e5bcd7 [WebAssembly] Implement v128.select ...

Although the SIMD spec proposal does not specifically include a
select instruction, the select instruction in MVP WebAssembly is
polymorphic over the selected types, so it is able to work on v128
values when they are enabled. This patch introduces a new variant of
the select instruction for each legal vector type. Additional ISel
patterns are adapted from the SELECT_I32 and SELECT_I64 patterns.

Depends on D83736.

Differential Revision: https://reviews.llvm.org/D83737

2020-07-16 11:37:25 -07:00

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