[PATCH] D81076: [PowerPC] Custom lower rotl v1i128 to vector_shuffle.

EsmeYi via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed Jun 24 00:29:54 PDT 2020


Esme added a comment.

In D81076#2095354 <https://reviews.llvm.org/D81076#2095354>, @shawnl wrote:

> What about shr and ashl?
>
> a = b << 64;
> or
>  a = b >> 64;


It seams no gain to transform SHL/SRL v1i128 to vector_shuffle. https://godbolt.org/z/CfoPNP


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