[regexp] Add slow exec stub to reduce code size

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 <memory>
 
 #include "src/assembler.h"
@@ skipping 31 matching lines @@
   V(CreateAllocationSite)                 \
   V(CreateWeakCell)                       \
   V(CallFunction)                         \
   V(CallIC)                               \
   V(CallICTrampoline)                     \
   V(CallForwardVarargs)                   \
   V(CallConstruct)                        \
   V(CallTrampoline)                       \
   V(ConstructStub)                        \
   V(ConstructTrampoline)                  \
+  V(GenericTagged2)                       \
   V(RegExpExec)                           \
   V(RegExpReplace)                        \
   V(RegExpSplit)                          \
   V(CopyFastSmiOrObjectElements)          \
   V(TransitionElementsKind)               \
   V(AllocateHeapNumber)                   \
   V(Builtin)                              \
   V(ArrayConstructor)                     \
   V(ForEach)                              \
   V(ArrayNoArgumentConstructor)           \
@@ skipping 576 matching lines @@
   DEFINE_PARAMETERS(kTarget, kActualArgumentsCount, kSlot)
   DECLARE_DESCRIPTOR_WITH_CUSTOM_FUNCTION_TYPE(CallICTrampolineDescriptor,
                                                CallInterfaceDescriptor)
 };
 
 class CallConstructDescriptor : public CallInterfaceDescriptor {
  public:
   DECLARE_DESCRIPTOR(CallConstructDescriptor, CallInterfaceDescriptor)
 };
 
+class GenericTagged2Descriptor : public CallInterfaceDescriptor {
+ public:
+  DEFINE_PARAMETERS(kFirst, kSecond)
+  DECLARE_DEFAULT_DESCRIPTOR(GenericTagged2Descriptor, CallInterfaceDescriptor,
+                             kParameterCount)
+};
+
 class RegExpExecDescriptor : public CallInterfaceDescriptor {
  public:
   DEFINE_PARAMETERS(kString, kLastIndex, kStringStart, kStringEnd, kCode)
   DECLARE_DESCRIPTOR_WITH_CUSTOM_FUNCTION_TYPE(RegExpExecDescriptor,
                                                CallInterfaceDescriptor)
 
   static const Register StringRegister();
   static const Register LastIndexRegister();
   static const Register StringStartRegister();
   static const Register StringEndRegister();
@@ skipping 323 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_