[PATCH] D134982: [X86] Add support for "light" AVX

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

@pengfei Please can you confirm that the Intel models are suitable for the TuningAllowLight256Bit flag?



================
Comment at: llvm/lib/Target/X86/X86.td:1290
+                                     TuningInsertVZEROUPPER,
+                                     TuningAllowLight256Bit];
   list<SubtargetFeature> ZN2AdditionalFeatures = [FeatureCLWB,
----------------
I'm not certain Ryzen needs this - even on znver1 with double pumping of 256-bit ops.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D134982/new/

https://reviews.llvm.org/D134982