[X86] Autodetect znver3

clang/test/CodeGen/target-builtin-noerror.c

@@ -128,4 +128,5 @@ void verifycpustrings() {
   (void)__builtin_cpu_is("westmere");
   (void)__builtin_cpu_is("znver1");
   (void)__builtin_cpu_is("znver2");
+  (void)__builtin_cpu_is("znver3");
 }

compiler-rt/lib/builtins/cpu_model.c

@@ -68,6 +68,7 @@ enum ProcessorTypes {
   INTEL_GOLDMONT,
   INTEL_GOLDMONT_PLUS,
   INTEL_TREMONT,
+  AMDFAM19H,
   CPU_TYPE_MAX
 };
 
@@ -97,6 +98,7 @@ enum ProcessorSubtypes {
   INTEL_COREI7_COOPERLAKE,
   INTEL_COREI7_SAPPHIRERAPIDS,
   INTEL_COREI7_ALDERLAKE,
+  AMDFAM19H_ZNVER3,
   CPU_SUBTYPE_MAX
 };
 
@@ -550,6 +552,14 @@ getAMDProcessorTypeAndSubtype(unsigned Family, unsigned Model,
       break; // 00h-0Fh: Zen1
     }
     break;
+  case 25:
+    CPU = "znver3";
+    *Type = AMDFAM19H;
+    if (Model <= 0x0f) {
+      *Subtype = AMDFAM19H_ZNVER3;
+      break; // 00h-0Fh: Zen3
+    }
+    break;
   default:
     break; // Unknown AMD CPU.
   }

llvm/include/llvm/Support/X86TargetParser.def

@@ -44,6 +44,7 @@ X86_CPU_TYPE(INTEL_KNM,           "knm")
 X86_CPU_TYPE(INTEL_GOLDMONT,      "goldmont")
 X86_CPU_TYPE(INTEL_GOLDMONT_PLUS, "goldmont-plus")
 X86_CPU_TYPE(INTEL_TREMONT,       "tremont")
+X86_CPU_TYPE(AMDFAM19H,           "amdfam19h")
 
 // Alternate names supported by __builtin_cpu_is and target multiversioning.
 X86_CPU_TYPE_ALIAS(INTEL_BONNELL,    "atom")
@@ -86,6 +87,7 @@ X86_CPU_SUBTYPE(INTEL_COREI7_TIGERLAKE,      "tigerlake")
 X86_CPU_SUBTYPE(INTEL_COREI7_COOPERLAKE,     "cooperlake")
 X86_CPU_SUBTYPE(INTEL_COREI7_SAPPHIRERAPIDS, "sapphirerapids")
 X86_CPU_SUBTYPE(INTEL_COREI7_ALDERLAKE,      "alderlake")
+X86_CPU_SUBTYPE(AMDFAM19H_ZNVER3,            "znver3")
 #undef X86_CPU_SUBTYPE
 
 

llvm/lib/Support/Host.cpp

@@ -964,6 +964,14 @@ getAMDProcessorTypeAndSubtype(unsigned Family, unsigned Model,
       break; // 00h-0Fh: Zen1
     }
     break;
+  case 25:
+    CPU = "znver3";
+    *Type = X86::AMDFAM19H;
+    if (Model <= 0x0f) {
+      *Subtype = X86::AMDFAM19H_ZNVER3;
+      break; // 00h-0Fh: Zen3
+    }
+    break;
   default:
     break; // Unknown AMD CPU.
   }