[PATCH] D100085: [X86] Support -march=rocketlake

Sun Apr 11 18:50:03 PDT 2021

FreddyYe marked an inline comment as done.
FreddyYe added inline comments.

================
Comment at: llvm/lib/Target/X86/X86.td:742
                                                   FeatureGFNI,
                                                   FeatureCLWB,
                                                   FeatureRDPID,
----------------
craig.topper wrote:
> FreddyYe wrote:
> > craig.topper wrote:
> > > I'm not sure that rocketlake has CLWB. Can you double check that? It's not listed in the cpuinfo dump on the 11700K that I found with a google search here https://www.pugetsystems.com/labs/hpc/Intel-Rocket-Lake-Compute-Performance-Results-HPL-HPCG-NAMD-and-Numpy-2116/
> > For now I have only an icelake-client machine and found that CLWB is not there, too. Guess I can do that modification in this patch? Rocketlake may probably lose CLWB. I'll double check.
> What’s the model number for you ice lake client CPU?
It is 0x7e. And I've double checked that rkl also hasn't CLWB.

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D100085/new/

https://reviews.llvm.org/D100085