[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 32 matching lines @@
   V(CreateWeakCell)                        \
   V(CallFunction)                          \
   V(CallIC)                                \
   V(CallICTrampoline)                      \
   V(CallForwardVarargs)                    \
   V(CallConstruct)                         \
   V(CallTrampoline)                        \
   V(ConstructStub)                         \
   V(ConstructTrampoline)                   \
   V(RegExpExec)                            \
+  V(RegExpPrototypeExecSlow)               \
   V(RegExpReplace)                         \
   V(RegExpSplit)                           \
   V(CopyFastSmiOrObjectElements)           \
   V(TransitionElementsKind)                \
   V(AllocateHeapNumber)                    \
   V(Builtin)                               \
   V(ArrayConstructor)                      \
   V(IteratingArrayBuiltin)                 \
   V(IteratingArrayBuiltinLoopContinuation) \
   V(ArrayNoArgumentConstructor)            \
@@ skipping 588 matching lines @@
   DECLARE_DESCRIPTOR_WITH_CUSTOM_FUNCTION_TYPE(RegExpExecDescriptor,
                                                CallInterfaceDescriptor)
 
   static const Register StringRegister();
   static const Register LastIndexRegister();
   static const Register StringStartRegister();
   static const Register StringEndRegister();
   static const Register CodeRegister();
 };
 
+class RegExpPrototypeExecSlowDescriptor : public CallInterfaceDescriptor {
+ public:
+  DEFINE_PARAMETERS(kReceiver, kString)
+  DECLARE_DEFAULT_DESCRIPTOR(RegExpPrototypeExecSlowDescriptor,
+                             CallInterfaceDescriptor, kParameterCount)
+};
+
 class RegExpReplaceDescriptor : public CallInterfaceDescriptor {
  public:
   DEFINE_PARAMETERS(kReceiver, kString, kReplaceValue)
   DECLARE_DEFAULT_DESCRIPTOR(RegExpReplaceDescriptor, CallInterfaceDescriptor,
                              kParameterCount)
 };
 
 class RegExpSplitDescriptor : public CallInterfaceDescriptor {
  public:
   DEFINE_PARAMETERS(kReceiver, kString, kLimit)
@@ skipping 318 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_