Move AESNI generation to Skylake and Goldmont

The instruction set first appeared with Westmere, but not all processors
in that and the next few generations have the instructions. According to
Wikipedia[1], the first generation in which all SKUs have AES
instructions are Skylake and Goldmont. I can't find any Skylake,
Kabylake, Kabylake-R or Cannon Lake currently listed at
https://ark.intel.com that says "Intel® AES New Instructions" "No".

This matches GCC commit
https://gcc.gnu.org/ml/gcc-patches/2018-08/msg01940.html

[1] https://en.wikipedia.org/wiki/AES_instruction_set

Patch By: thiagomacieira
Differential Revision: https://reviews.llvm.org/D51510

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@341862 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Basic/Targets/X86.cpp b/lib/Basic/Targets/X86.cpp
index eaca1811c0fe04f865d7cb7a64c4b35c3a4468b0..22a8b1e46a08921d948e14d61a904259112a6146 100644 (file)
--- a/lib/Basic/Targets/X86.cpp
+++ b/lib/Basic/Targets/X86.cpp
@@ -170,6 +170,7 @@ bool X86TargetInfo::initFeatureMap(
       setFeatureEnabledImpl(Features, "sgx", true);
     setFeatureEnabledImpl(Features, "clflushopt", true);
     setFeatureEnabledImpl(Features, "rtm", true);
+    setFeatureEnabledImpl(Features, "aes", true);
     LLVM_FALLTHROUGH;
   case CK_Broadwell:
     setFeatureEnabledImpl(Features, "rdseed", true);
@@ -196,7 +197,6 @@ bool X86TargetInfo::initFeatureMap(
     setFeatureEnabledImpl(Features, "xsaveopt", true);
     LLVM_FALLTHROUGH;
   case CK_Westmere:
-    setFeatureEnabledImpl(Features, "aes", true);
     setFeatureEnabledImpl(Features, "pclmul", true);
     LLVM_FALLTHROUGH;
   case CK_Nehalem:
@@ -248,10 +248,10 @@ bool X86TargetInfo::initFeatureMap(
     setFeatureEnabledImpl(Features, "clflushopt", true);
     setFeatureEnabledImpl(Features, "mpx", true);
     setFeatureEnabledImpl(Features, "fsgsbase", true);
+    setFeatureEnabledImpl(Features, "aes", true);
     LLVM_FALLTHROUGH;
   case CK_Silvermont:
     setFeatureEnabledImpl(Features, "rdrnd", true);
-    setFeatureEnabledImpl(Features, "aes", true);
     setFeatureEnabledImpl(Features, "pclmul", true);
     setFeatureEnabledImpl(Features, "sse4.2", true);
     setFeatureEnabledImpl(Features, "prfchw", true);