[X86] Add more icelake model numbers to compiler-rt implementation of __builtin_cpu_is.

Using model numbers found in Table 2-1 of the May 2019 version
of the Intel Software Developer's Manual Volume 4.

llvm-svn: 361423

compiler-rt/lib/builtins/cpu_model.c

@@ -363,11 +363,19 @@ static void getIntelProcessorTypeAndSubtype(unsigned Family, unsigned Model,
       break;
 
     // Icelake:
+    case 0x7d:
     case 0x7e:
       *Type = INTEL_COREI7;
       *Subtype = INTEL_COREI7_ICELAKE_CLIENT; // "icelake-client"
       break;
 
+    // Icelake Xeon:
+    case 0x6a:
+    case 0x6c:
+      *Type = INTEL_COREI7;
+      *Subtype = INTEL_COREI7_ICELAKE_SERVER; // "icelake-server"
+      break;
+
     case 0x1c: // Most 45 nm Intel Atom processors
     case 0x26: // 45 nm Atom Lincroft
     case 0x27: // 32 nm Atom Medfield