[PATCH] D69500: [X86] NFC: Convert LLVM command-line flag to target attribute

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

Add a comment to the ReleaseNotes X86 section?



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Comment at: lib/Target/X86/X86.td:316
+// these targets lack FeatureFastPartialYMMorZMMWrite and VZEROUPPER is fast.
+// However, Knights Landing and later do have FeatureFastPartialYMMorZMMWrite
+// and VZEROUPPER is slow. These targets should omit the VZEROUPPER instruction.
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Just say "some X86 processors" like above.


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  https://reviews.llvm.org/D69500/new/

https://reviews.llvm.org/D69500