I see. agreed. Will upload shortly

From: Craig Topper [mailto:craig.top...@gmail.com]
Sent: Tuesday, December 26, 2017 19:52
To: reviews+d41583+public+5c6eea8282599...@reviews.llvm.org
Cc: cfe-commits@lists.llvm.org; Tayree, Coby <coby.tay...@intel.com>; 
mgo...@gentoo.org
Subject: Re: [PATCH] D41583: [x86][icelake][vaes]

I meant if the command line says “-mvaes -mno-aes” we should make sure to 
disable vaes

On Tue, Dec 26, 2017 at 9:47 AM coby via Phabricator 
<revi...@reviews.llvm.org<mailto:revi...@reviews.llvm.org>> wrote:
coby added inline comments.


================
Comment at: lib/Basic/Targets/X86.cpp:573
     setMMXLevel(Features, AMD3DNowAthlon, Enabled);
   } else if (Name == "aes") {
     if (Enabled)
----------------
craig.topper wrote:
> Shouldn't -aes imply -vaes?
how come? perhaps i'm missing here something?
why would the first imply the latter?
following this road an atom z8XXX should be capable of supporting vaes, for 
example (where it lacks avx, for example, 
https://www.intel.com/content/www/us/en/processors/atom/atom-z8000-datasheet-vol-1.html)
also, in that sense, pclmul is implying vpclmulqdq


Repository:
  rC Clang

https://reviews.llvm.org/D41583


--
~Craig
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