[turbofan] Avoid going through ArgumentsAdaptorTrampoline for CSA/C++ builtins

src/interface-descriptors.h

Index: src/interface-descriptors.h
diff --git a/src/interface-descriptors.h b/src/interface-descriptors.h
index 4a42862afa0b678969684db02a849b7683271abf..87f0d82db660132a901482d982aecdaffdfe7288 100644
--- a/src/interface-descriptors.h
+++ b/src/interface-descriptors.h
@@ -54,7 +54,6 @@ class PlatformInterfaceDescriptor;
   V(Builtin)                               \
   V(ArrayConstructor)                      \
   V(IteratingArrayBuiltin)                 \
-  V(IteratingArrayBuiltinLoopContinuation) \
   V(ArrayNoArgumentConstructor)            \
   V(ArraySingleArgumentConstructor)        \
   V(ArrayNArgumentsConstructor)            \
@@ -226,15 +225,25 @@ class V8_EXPORT_PRIVATE CallInterfaceDescriptor {
   }                                                        \
   static inline CallDescriptors::Key key();
 
-#define DECLARE_DEFAULT_DESCRIPTOR(name, base, parameter_count)            \
-  DECLARE_DESCRIPTOR_WITH_BASE(name, base)                                 \
- protected:                                                                \
-  void InitializePlatformSpecific(CallInterfaceDescriptorData* data)       \
-      override {                                                           \
-    DefaultInitializePlatformSpecific(data, parameter_count);              \
-  }                                                                        \
-  name(Isolate* isolate, CallDescriptors::Key key) : base(isolate, key) {} \
-                                                                           \
+static const int kMaxBuiltinRegisterParams = 5;
+
+#define DECLARE_DEFAULT_DESCRIPTOR(name, base, parameter_count)               \
+  DECLARE_DESCRIPTOR_WITH_BASE(name, base)                                    \
+ protected:                                                                   \
+  static const int kRegisterParams =                                          \
+      parameter_count > kMaxBuiltinRegisterParams ? kMaxBuiltinRegisterParams \
+                                                  : parameter_count;          \
+  static const int kStackParams = parameter_count - kRegisterParams;          \
+  void InitializePlatformSpecific(CallInterfaceDescriptorData* data)          \
+      override {                                                              \
+    DefaultInitializePlatformSpecific(data, kRegisterParams);                 \
+  }                                                                           \
+  void InitializePlatformIndependent(CallInterfaceDescriptorData* data)       \
+      override {                                                              \
+    data->InitializePlatformIndependent(kRegisterParams, kStackParams, NULL); \
+  }                                                                           \
+  name(Isolate* isolate, CallDescriptors::Key key) : base(isolate, key) {}    \
+                                                                              \
  public:
 
 #define DECLARE_DESCRIPTOR(name, base)                                         \
@@ -642,14 +651,6 @@ class IteratingArrayBuiltinDescriptor : public BuiltinDescriptor {
   DECLARE_BUILTIN_DESCRIPTOR(IteratingArrayBuiltinDescriptor)
 };
 
-class IteratingArrayBuiltinLoopContinuationDescriptor
-    : public BuiltinDescriptor {
- public:
-  DEFINE_BUILTIN_PARAMETERS(kCallback, kThisArg, kArray, kObject, kInitialK,
-                            kLength, kTo)
-  DECLARE_BUILTIN_DESCRIPTOR(IteratingArrayBuiltinLoopContinuationDescriptor)
-};
-
 class ArrayConstructorDescriptor : public CallInterfaceDescriptor {
  public:
   DEFINE_PARAMETERS(kTarget, kNewTarget, kActualArgumentsCount, kAllocationSite)