[PATCH] D67259: [X86] Enable -mprefer-vector-width=256 by default for Skylake-avx512 and later Intel CPUs.

Diego Caballero via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Sat Sep 14 14:55:24 PDT 2019


dcaballe added inline comments.


================
Comment at: llvm/docs/ReleaseNotes.rst:102
+  decrease in CPU frequency on these CPUs. This can be re-enabled by passing
+  -mprefer-vector-width=512 to clang or passing -mattr=-prefer-256-bit to llc.
 
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Typo? "passing -mattr=-prefer-256-bit to llc" -> "passing -mattr=-prefer-512-bit to llc"?


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D67259/new/

https://reviews.llvm.org/D67259





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