[x86][icelake]VAES introduction
an icelake promotion of AES
Differential Revision: https://reviews.llvm.org/D40078

llvm-svn: 318740
diff --git a/llvm/lib/Target/X86/X86Subtarget.h b/llvm/lib/Target/X86/X86Subtarget.h
index 0b1eddc..3f0657b 100644
--- a/llvm/lib/Target/X86/X86Subtarget.h
+++ b/llvm/lib/Target/X86/X86Subtarget.h
@@ -107,6 +107,7 @@
 
   /// Target has AES instructions
   bool HasAES;
+  bool HasVAES;
 
   /// Target has FXSAVE/FXRESTOR instructions
   bool HasFXSR;
@@ -457,6 +458,7 @@
   bool has3DNowA() const { return X863DNowLevel >= ThreeDNowA; }
   bool hasPOPCNT() const { return HasPOPCNT; }
   bool hasAES() const { return HasAES; }
+  bool hasVAES() const { return HasVAES; }
   bool hasFXSR() const { return HasFXSR; }
   bool hasXSAVE() const { return HasXSAVE; }
   bool hasXSAVEOPT() const { return HasXSAVEOPT; }