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

Sun Apr 11 18:58:03 PDT 2021

craig.topper added inline comments.

================
Comment at: llvm/lib/Target/X86/X86.td:742
                                                   FeatureGFNI,
                                                   FeatureCLWB,
                                                   FeatureRDPID,
----------------
FreddyYe wrote:
> 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.
Sorry I meant the marketing name like "Intel® Core™ i7-1065G7"

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  https://reviews.llvm.org/D100085/new/

https://reviews.llvm.org/D100085