[X86] Add avx512vpopcntdq to Knights Mill

As indicated by Table 1-1 in Intel Architecture Instruction Set Extensions and Future Features Programming Reference from October 2017.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@316592 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86.td b/lib/Target/X86/X86.td
index 1a13ac2..840b3b4 100644 (file)
--- a/lib/Target/X86/X86.td
+++ b/lib/Target/X86/X86.td
@@ -626,7 +626,8 @@ class KnightsMillProc<string Name> : ProcModel<Name, HaswellModel,
                                                KNLFeatures.Value, [
   ProcIntelKNL,
   FeatureSlowTwoMemOps,
-  FeatureFastPartialYMMorZMMWrite
+  FeatureFastPartialYMMorZMMWrite,
+  FeatureVPOPCNTDQ
 ]>;
 def : KnightsMillProc<"knm">; // TODO Add AVX5124FMAPS/AVX5124VNNIW features