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Commit d6b68d13 authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86][SSE] combineExtractWithShuffle - support zero-extending to allow... 

[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.
parent 27924b12
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