[PATCH] D43380: [X86] Disable CLWB in Cannon Lake

[Gabor Buella via Phabricator via llvm-commits]

GBuella added a comment.

In https://reviews.llvm.org/D43380#1010794, @craig.topper wrote:

> How do we test this? You'd have to verify that the clwb intrinsic throws a cannot select error on cannonlake, but do we do that in llc lit tests today?


I have not seen any such tests for CPU being selected in LLVM.
The closest thing I found is in clang ( test/Preprocessor/predefined-arch-macros.c ), I'm adding it there.


Repository:
  rL LLVM

https://reviews.llvm.org/D43380