[x86] Atom check includes AMT

src/base/cpu.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/base/cpu.h"
 
 #if V8_LIBC_MSVCRT
 #include <intrin.h>  // __cpuid()
 #endif
 #if V8_OS_LINUX
@@ skipping 367 matching lines @@
     if (family_ == 0x6) {
       switch (model_) {
         case 0x1c:  // SLT
         case 0x26:
         case 0x36:
         case 0x27:
         case 0x35:
         case 0x37:  // SLM
         case 0x4a:
         case 0x4d:
+        case 0x4c:  // AMT
+        case 0x6e:
           is_atom_ = true;
       }
     }
   }
 
 #if V8_HOST_ARCH_IA32
   // SAHF is always available in compat/legacy mode,
   has_sahf_ = true;
 #else
   // Query extended IDs.
@@ skipping 276 matching lines @@
     case POWER_5:
       part_ = PPC_POWER5;
       break;
   }
 #endif  // V8_OS_AIX
 #endif  // !USE_SIMULATOR
 #endif  // V8_HOST_ARCH_PPC
 }
 
 } }  // namespace v8::base