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# 1b894ccd 10-Jun-2021 Jessica Paquette <[email protected]>

[AArch64][GlobalISel] Mark some G_BITREVERSE types as legal + select them

We fall back on G_CTTZ_ZERO_UNDEF a lot when building clang for arm64 with
gisel.

Handling this will require that we can ha

[AArch64][GlobalISel] Mark some G_BITREVERSE types as legal + select them

We fall back on G_CTTZ_ZERO_UNDEF a lot when building clang for arm64 with
gisel.

Handling this will require that we can handle G_BITREVERSE.

This patch marks G_BITREVERSE instructions with natively supported types as
legal. We get selection on these types for free via the importer.

Differential Revision: https://reviews.llvm.org/D103999

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