[PATCH] D62836: [X86] -march=cooperlake (llvm)

[Kan Shengchen via Phabricator via llvm-commits]

skan created this revision.
skan added reviewers: craig.topper, LuoYuanke, xiangzhangllvm, pengfei.
Herald added subscribers: llvm-commits, kristina.
Herald added a project: LLVM.

Support intel -march=cooperlake in llvm


Repository:
  rL LLVM

https://reviews.llvm.org/D62836

Files:
  include/llvm/Support/X86TargetParser.def
  lib/Support/Host.cpp
  lib/Target/X86/X86.td
  test/CodeGen/X86/cpus-intel.ll


Index: test/CodeGen/X86/cpus-intel.ll
===================================================================
--- test/CodeGen/X86/cpus-intel.ll
+++ test/CodeGen/X86/cpus-intel.ll
@@ -35,6 +35,7 @@
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=skylake-avx512 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=skx 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=cascadelake 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
+; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=cooperlake 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=cannonlake 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=icelake-client 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=icelake-server 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
Index: lib/Target/X86/X86.td
===================================================================
--- lib/Target/X86/X86.td
+++ lib/Target/X86/X86.td
@@ -616,6 +616,15 @@
   list<SubtargetFeature> CLXFeatures =
     !listconcat(CLXInheritableFeatures, CLXSpecificFeatures);
 
+  // Cooperlake
+  list<SubtargetFeature> CPXAdditionalFeatures = [FeatureBF16];
+  list<SubtargetFeature> CPXSpecificFeatures = [FeatureHasFastGather,
+                                                FeaturePOPCNTFalseDeps];
+  list<SubtargetFeature> CPXInheritableFeatures =
+    !listconcat(CLXInheritableFeatures, CPXAdditionalFeatures);
+  list<SubtargetFeature> CPXFeatures =
+    !listconcat(CPXInheritableFeatures, CPXSpecificFeatures);
+
   // Cannonlake
   list<SubtargetFeature> CNLAdditionalFeatures = [FeatureAVX512,
                                                   FeatureCDI,
@@ -1076,6 +1085,8 @@
 
 def : ProcessorModel<"cascadelake", SkylakeServerModel,
                      ProcessorFeatures.CLXFeatures>;
+def : ProcessorModel<"cooperlake", SkylakeServerModel,
+                     ProcessorFeatures.CPXFeatures>;
 def : ProcessorModel<"cannonlake", SkylakeServerModel,
                      ProcessorFeatures.CNLFeatures>;
 def : ProcessorModel<"icelake-client", SkylakeServerModel,
Index: lib/Support/Host.cpp
===================================================================
--- lib/Support/Host.cpp
+++ lib/Support/Host.cpp
@@ -672,7 +672,9 @@
     // Skylake Xeon:
     case 0x55:
       *Type = X86::INTEL_COREI7;
-      if (Features2 & (1 << (X86::FEATURE_AVX512VNNI - 32)))
+      if (Features3 & (1 << (X86::FEATURE_AVX512BF16 - 64)))
+        *Subtype = X86::INTEL_COREI7_COOPERLAKE; // "cooperlake"
+      else if (Features2 & (1 << (X86::FEATURE_AVX512VNNI - 32)))
         *Subtype = X86::INTEL_COREI7_CASCADELAKE; // "cascadelake"
       else
         *Subtype = X86::INTEL_COREI7_SKYLAKE_AVX512; // "skylake-avx512"
@@ -748,6 +750,12 @@
         break;
       }
 
+      if (Features3 & (1 << (X86::FEATURE_AVX512BF16 - 64))) {
+        *Type = X86::INTEL_COREI7;
+        *Subtype = X86::INTEL_COREI7_COOPERLAKE;
+        break;
+      }
+
       if (Features2 & (1 << (X86::FEATURE_AVX512VNNI - 32))) {
         *Type = X86::INTEL_COREI7;
         *Subtype = X86::INTEL_COREI7_CASCADELAKE;
Index: include/llvm/Support/X86TargetParser.def
===================================================================
--- include/llvm/Support/X86TargetParser.def
+++ include/llvm/Support/X86TargetParser.def
@@ -111,6 +111,7 @@
 X86_CPU_SUBTYPE       ("k6-2",           AMDPENTIUM_K62)
 X86_CPU_SUBTYPE       ("k6-3",           AMDPENTIUM_K63)
 X86_CPU_SUBTYPE       ("geode",          AMDPENTIUM_GEODE)
+X86_CPU_SUBTYPE       ("cooperlake",     INTEL_COREI7_COOPERLAKE)
 #undef X86_CPU_SUBTYPE_COMPAT
 #undef X86_CPU_SUBTYPE
 
@@ -165,5 +166,6 @@
 X86_FEATURE       (66, FEATURE_EM64T)
 X86_FEATURE       (67, FEATURE_CLFLUSHOPT)
 X86_FEATURE       (68, FEATURE_SHA)
+X86_FEATURE       (69, FEATURE_AVX512BF16)
 #undef X86_FEATURE_COMPAT
 #undef X86_FEATURE


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