Simon Pilgrim d6b68d1344 [X86][SSE] combineExtractWithShuffle - support zero-extending to allow extracting from narrow shuffle masks ...

If the shuffle mask can't be widened to match the original extracted element width, see if the upper bits are zeroable - which allows us to extract+zero-extend the smaller extraction.

2021-01-29 14:22:10 +00:00

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