[PATCH] D32616: [X86] Add more patterns for BZHI isel

[Craig Topper via Phabricator via llvm-commits]

craig.topper added a comment.

So AMD's description is similar to the incorrect Intel description. Do you have an AMD machine that you can verify this with?

I tested with

printf("%x", _bzhi_u32(0xffffffff, 32));

On Haswell that returned 0xffffffff.


https://reviews.llvm.org/D32616