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GlobalISel: Merge FewerElements for G_BUILD_VECTOR/G_CONCAT_VECTORS

Authored by arsenm on Aug 3 2020, 3:37 PM.

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GlobalISel: Merge FewerElements for G_BUILD_VECTOR/G_CONCAT_VECTORS

This switches from using G_EXTRACT in odd cases to widen with undef
and unmerge.

Details

Committed
arsenmAug 22 2020, 7:25 AM
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rG42b993d97d31: [X86] ia32intrin.h - pull out common attributes used in cast helpers into…
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