[turbofan] Add support for transitioning stores to double fields.

src/interface-descriptors.h

 // Copyright 2014 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_CALL_INTERFACE_DESCRIPTOR_H_
 #define V8_CALL_INTERFACE_DESCRIPTOR_H_
 
 #include "src/assembler.h"
 #include "src/macro-assembler.h"
 
@@ skipping 24 matching lines @@
   V(CreateAllocationSite)                     \
   V(CreateWeakCell)                           \
   V(CallFunction)                             \
   V(CallFunctionWithFeedback)                 \
   V(CallFunctionWithFeedbackAndVector)        \
   V(CallConstruct)                            \
   V(CallTrampoline)                           \
   V(RegExpConstructResult)                    \
   V(TransitionElementsKind)                   \
   V(AllocateHeapNumber)                       \
+  V(AllocateMutableHeapNumber)                \
   V(AllocateInNewSpace)                       \
   V(ArrayConstructorConstantArgCount)         \
   V(ArrayConstructor)                         \
   V(InternalArrayConstructorConstantArgCount) \
   V(InternalArrayConstructor)                 \
   V(Compare)                                  \
   V(CompareNil)                               \
   V(ToBoolean)                                \
   V(BinaryOp)                                 \
   V(BinaryOpWithAllocationSite)               \
@@ skipping 459 matching lines @@
   DECLARE_DESCRIPTOR(TransitionElementsKindDescriptor, CallInterfaceDescriptor)
 };
 
 
 class AllocateHeapNumberDescriptor : public CallInterfaceDescriptor {
  public:
   DECLARE_DESCRIPTOR(AllocateHeapNumberDescriptor, CallInterfaceDescriptor)
 };
 
 
+class AllocateMutableHeapNumberDescriptor : public CallInterfaceDescriptor {
+ public:
+  DECLARE_DESCRIPTOR(AllocateMutableHeapNumberDescriptor,
+                     CallInterfaceDescriptor)
+};
+
+
 class AllocateInNewSpaceDescriptor : public CallInterfaceDescriptor {
  public:
   DECLARE_DESCRIPTOR(AllocateInNewSpaceDescriptor, CallInterfaceDescriptor)
 };
 
 
 class ArrayConstructorConstantArgCountDescriptor
     : public CallInterfaceDescriptor {
  public:
   DECLARE_DESCRIPTOR(ArrayConstructorConstantArgCountDescriptor,
@@ skipping 228 matching lines @@
 }  // namespace v8
 
 
 #if V8_TARGET_ARCH_ARM64
 #include "src/arm64/interface-descriptors-arm64.h"
 #elif V8_TARGET_ARCH_ARM
 #include "src/arm/interface-descriptors-arm.h"
 #endif
 
 #endif  // V8_CALL_INTERFACE_DESCRIPTOR_H_