[turbofan] Remove the TryLowerDirectJSCall hack from generic lowering.

src/types.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_TYPES_H_
 #define V8_TYPES_H_
 
 #include "src/conversions.h"
 #include "src/factory.h"
 #include "src/handles.h"
@@ skipping 215 matching lines @@
   V(UniqueName,          kSymbol | kInternalizedString) \
   V(Name,                kSymbol | kString) \
   V(NumberOrString,      kNumber | kString) \
   V(PlainPrimitive,      kNumberOrString | kBoolean | kNull | kUndefined) \
   V(Primitive,           kSymbol | kPlainPrimitive) \
   V(DetectableObject,    kGlobalObject | kOtherObject) \
   V(DetectableReceiver,  kDetectableObject | kProxy) \
   V(Detectable,          kDetectableReceiver | kNumber | kName) \
   V(Object,              kDetectableObject | kUndetectable) \
   V(Receiver,            kObject | kProxy) \
+  V(ReceiverOrUndefined, kReceiver | kUndefined) \
   V(StringOrReceiver,    kString | kReceiver) \
   V(Unique,              kBoolean | kUniqueName | kNull | kUndefined | \
                          kReceiver) \
   V(NonNumber,           kUnique | kString | kInternal) \
   V(Any,                 0xfffffffeu)
 
 // clang-format on
 
 /*
  * The following diagrams show how integers (in the mathematical sense) are
@@ skipping 157 matching lines @@
   }
   static TypeHandle Function(
       TypeHandle result, TypeHandle param0, TypeHandle param1,
       TypeHandle param2, Region* region) {
     FunctionHandle function = Function(result, Any(region), 3, region);
     function->InitParameter(0, param0);
     function->InitParameter(1, param1);
     function->InitParameter(2, param2);
     return function;
   }
+  static TypeHandle Function(TypeHandle result, int arity, TypeHandle* params,
+                             Region* region) {
+    FunctionHandle function = Function(result, Any(region), arity, region);
+    for (int i = 0; i < arity; ++i) {
+      function->InitParameter(i, params[i]);
+    }
+    return function;
+  }
 
   static TypeHandle Union(TypeHandle type1, TypeHandle type2, Region* reg);
   static TypeHandle Intersect(TypeHandle type1, TypeHandle type2, Region* reg);
   static TypeImpl* Union(TypeImpl* type1, TypeImpl* type2) {
     return BitsetType::New(type1->AsBitset() | type2->AsBitset());
   }
   static TypeImpl* Intersect(TypeImpl* type1, TypeImpl* type2) {
     return BitsetType::New(type1->AsBitset() & type2->AsBitset());
   }
 
@@ skipping 728 matching lines @@
   bool Narrows(BoundsImpl that) {
     return that.lower->Is(this->lower) && this->upper->Is(that.upper);
   }
 };
 
 typedef BoundsImpl<ZoneTypeConfig> Bounds;
 
 } }  // namespace v8::internal
 
 #endif  // V8_TYPES_H_