[PATCH] D29874: [X86] Generate VZEROUPPER for Skylake-avx512

[Michael Kuperstein via Phabricator via llvm-commits]

mkuper added inline comments.


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Comment at: lib/Target/X86/X86VZeroUpper.cpp:111
+  return (Reg >= X86::YMM0 && Reg <= X86::YMM15) ||
+         (Reg >= X86::ZMM0 && Reg <= X86::ZMM15);
 }
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Drive by comment - is this relevant for Y/ZMM16-31? If not, then this should be explicitly documented, since these are obviously YmmOrZmmRegs.


https://reviews.llvm.org/D29874