Add new Float32x4 type for SIMD.js.

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 111 matching lines @@
 const int kMaxUInt16 = (1 << 16) - 1;
 const int kMinUInt16 = 0;
 
 const uint32_t kMaxUInt32 = 0xFFFFFFFFu;
 
 const int kCharSize      = sizeof(char);      // NOLINT
 const int kShortSize     = sizeof(short);     // NOLINT
 const int kIntSize       = sizeof(int);       // NOLINT
 const int kInt32Size     = sizeof(int32_t);   // NOLINT
 const int kInt64Size     = sizeof(int64_t);   // NOLINT
+const int kFloatSize     = sizeof(float);     // NOLINT
 const int kDoubleSize    = sizeof(double);    // NOLINT
 const int kIntptrSize    = sizeof(intptr_t);  // NOLINT
 const int kPointerSize   = sizeof(void*);     // NOLINT
 #if V8_TARGET_ARCH_X64 && V8_TARGET_ARCH_32_BIT
 const int kRegisterSize  = kPointerSize + kPointerSize;
 #else
 const int kRegisterSize  = kPointerSize;
 #endif
 const int kPCOnStackSize = kRegisterSize;
 const int kFPOnStackSize = kRegisterSize;
@@ skipping 827 matching lines @@
 inline FunctionKind WithObjectLiteralBit(FunctionKind kind) {
   kind = static_cast<FunctionKind>(kind | FunctionKind::kInObjectLiteral);
   DCHECK(IsValidFunctionKind(kind));
   return kind;
 }
 } }  // namespace v8::internal
 
 namespace i = v8::internal;
 
 #endif  // V8_GLOBALS_H_