Add new Float32x4 type for SIMD.js.

src/heap/heap.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_HEAP_HEAP_H_
 #define V8_HEAP_HEAP_H_
 
 #include <cmath>
 #include <map>
 
@@ skipping 28 matching lines @@
   V(Oddball, true_value, TrueValue)                                            \
   V(Oddball, false_value, FalseValue)                                          \
   V(String, empty_string, empty_string)                                        \
   V(Oddball, uninitialized_value, UninitializedValue)                          \
   V(Map, cell_map, CellMap)                                                    \
   V(Map, global_property_cell_map, GlobalPropertyCellMap)                      \
   V(Map, shared_function_info_map, SharedFunctionInfoMap)                      \
   V(Map, meta_map, MetaMap)                                                    \
   V(Map, heap_number_map, HeapNumberMap)                                       \
   V(Map, mutable_heap_number_map, MutableHeapNumberMap)                        \
+  V(Map, float32x4_map, Float32x4Map)                                          \
   V(Map, native_context_map, NativeContextMap)                                 \
   V(Map, fixed_array_map, FixedArrayMap)                                       \
   V(Map, code_map, CodeMap)                                                    \
   V(Map, scope_info_map, ScopeInfoMap)                                         \
   V(Map, fixed_cow_array_map, FixedCOWArrayMap)                                \
   V(Map, fixed_double_array_map, FixedDoubleArrayMap)                          \
   V(Map, constant_pool_array_map, ConstantPoolArrayMap)                        \
   V(Map, weak_cell_map, WeakCellMap)                                           \
   V(Map, one_byte_string_map, OneByteStringMap)                                \
   V(Map, one_byte_internalized_string_map, OneByteInternalizedStringMap)       \
@@ skipping 278 matching lines @@
   V(NullValue)                          \
   V(TrueValue)                          \
   V(FalseValue)                         \
   V(UninitializedValue)                 \
   V(CellMap)                            \
   V(GlobalPropertyCellMap)              \
   V(SharedFunctionInfoMap)              \
   V(MetaMap)                            \
   V(HeapNumberMap)                      \
   V(MutableHeapNumberMap)               \
+  V(Float32x4Map)                       \
   V(NativeContextMap)                   \
   V(FixedArrayMap)                      \
   V(CodeMap)                            \
   V(ScopeInfoMap)                       \
   V(FixedCOWArrayMap)                   \
   V(FixedDoubleArrayMap)                \
   V(ConstantPoolArrayMap)               \
   V(WeakCellMap)                        \
   V(NoInterceptorResultSentinel)        \
   V(HashTableMap)                       \
@@ skipping 1238 matching lines @@
                        AllocationSite* allocation_site = NULL);
 
   // Allocates and initializes a new JavaScript object based on a map.
   // Passing an allocation site means that a memento will be created that
   // points to the site.
   MUST_USE_RESULT AllocationResult
       AllocateJSObjectFromMap(Map* map, PretenureFlag pretenure = NOT_TENURED,
                               bool alloc_props = true,
                               AllocationSite* allocation_site = NULL);
 
-  // Allocated a HeapNumber from value.
+  // Allocates a HeapNumber from value.
   MUST_USE_RESULT AllocationResult
       AllocateHeapNumber(double value, MutableMode mode = IMMUTABLE,
                          PretenureFlag pretenure = NOT_TENURED);
 
-  // Allocate a byte array of the specified length
+  // Allocates a Float32x4 from the given lane values.
+  MUST_USE_RESULT AllocationResult
+  AllocateFloat32x4(float w, float x, float y, float z,
+                    PretenureFlag pretenure = NOT_TENURED);
+
+  // Allocates a byte array of the specified length
   MUST_USE_RESULT AllocationResult
       AllocateByteArray(int length, PretenureFlag pretenure = NOT_TENURED);
 
   // Copy the code and scope info part of the code object, but insert
   // the provided data as the relocation information.
   MUST_USE_RESULT AllocationResult
       CopyCode(Code* code, Vector<byte> reloc_info);
 
   MUST_USE_RESULT AllocationResult CopyCode(Code* code);
 
@@ skipping 1125 matching lines @@
   DisallowHeapAllocation no_allocation;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG
 }
 }  // namespace v8::internal
 
 #endif  // V8_HEAP_HEAP_H_