[PATCH] D41096: [X86] Initial support for prefer-vector-width function attribute

[Sanjay Patel via Phabricator via llvm-commits]

spatel added a comment.

In https://reviews.llvm.org/D41096#953922, @craig.topper wrote:

> How/where do you propose detecting the presence or absense of 512-bit instructions to change the CPU name?


I think the path through clang's CodeGenFunction::checkTargetFeatures() is where we tell the user if they've used an intrinsic without the required CPU attribute. So somewhere around there might work?


https://reviews.llvm.org/D41096