[PATCH] D35299: [AArch64] Tie source and destination operands for AESMC/AESIMC.

Evandro Menezes via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed Jul 12 14:40:00 PDT 2017


evandro added a comment.

In https://reviews.llvm.org/D35299#807127, @fhahn wrote:

> But unless Vk == Vi for AESMC/AESIMC, the most CPUs won't be able to fuse the pair and  won't execute it more efficiently.


Perhaps most CPUs require this, but certainly not all.  Thus, would there be a way to make this constraint specific to such CPUs?


https://reviews.llvm.org/D35299





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