[x64] Introduce FMA3 instructions on scalar data elements.

src/globals.h

 // Copyright 2012 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.
 
 #ifndef V8_GLOBALS_H_
 #define V8_GLOBALS_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 599 matching lines @@
 #define TRACK_MEMORY(name)
 #endif
 
 
 // CPU feature flags.
 enum CpuFeature {
   // x86
   SSE4_1,
   SSE3,
   SAHF,
+  AVX,
+  FMA3,
   // ARM
   VFP3,
   ARMv7,
   ARMv8,
   SUDIV,
   MLS,
   UNALIGNED_ACCESSES,
   MOVW_MOVT_IMMEDIATE_LOADS,
   VFP32DREGS,
   NEON,
@@ skipping 190 matching lines @@
   DCHECK(IsValidFunctionKind(kind));
   return kind & FunctionKind::kDefaultConstructor;
 }
 
 
 } }  // namespace v8::internal
 
 namespace i = v8::internal;
 
 #endif  // V8_GLOBALS_H_