Support Intel Sapphire Rapids

Minimum LLVM version: 12
Ref llvm/llvm-project@e02d081

Author: yuyichao

src/processor_x86.cpp

@@ -79,6 +79,7 @@ enum class CPU : uint32_t {
     intel_corei7_icelake_client,
     intel_corei7_icelake_server,
     intel_corei7_tigerlake,
+    intel_corei7_sapphirerapids,
     intel_knights_landing,
     intel_knights_mill,
 
@@ -209,6 +210,9 @@ constexpr auto icelake = cannonlake | get_feature_masks(avx512bitalg, vaes, avx5
 constexpr auto icelake_server = icelake | get_feature_masks(pconfig, wbnoinvd);
 constexpr auto tigerlake = icelake | get_feature_masks(avx512vp2intersect, movdiri,
                                                        movdir64b, shstk);
+constexpr auto sapphirerapids = icelake_server |
+    get_feature_masks(amx_tile, amx_int8, amx_bf16, avx512bf16, serialize, cldemote, waitpkg,
+                      ptwrite, tsxldtrk, enqcmd, shstk, avx512vp2intersect, movdiri, movdir64b);
 
 constexpr auto k8_sse3 = get_feature_masks(sse3, cx16);
 constexpr auto amdfam10 = k8_sse3 | get_feature_masks(sse4a, lzcnt, popcnt, sahf);
@@ -260,6 +264,8 @@ static constexpr CPUSpec<CPU, feature_sz> cpus[] = {
      Feature::icelake_server},
     {"tigerlake", CPU::intel_corei7_tigerlake, CPU::intel_corei7_icelake_client, 100000,
      Feature::tigerlake},
+    {"sapphirerapids", CPU::intel_corei7_sapphirerapids, CPU::intel_corei7_icelake_server, 120000,
+     Feature::sapphirerapids},
 
     {"athlon64", CPU::amd_athlon_64, CPU::generic, 0, Feature::generic},
     {"athlon-fx", CPU::amd_athlon_fx, CPU::generic, 0, Feature::generic},
@@ -419,6 +425,10 @@ static CPU get_intel_processor_name(uint32_t family, uint32_t model, uint32_t br
         case 0x8d:
             return CPU::intel_corei7_tigerlake;
 
+            // Sapphire Rapids
+        case 0x8f:
+            return CPU::intel_corei7_sapphirerapids;
+
         case 0x1c: // Most 45 nm Intel Atom processors
         case 0x26: // 45 nm Atom Lincroft
         case 0x27: // 32 nm Atom Medfield