[turbofan] Remove access to FunctionType from call interface.

src/builtins/builtins.cc

 // Copyright 2012 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.
 
 #include "src/builtins/builtins.h"
 #include "src/code-events.h"
 #include "src/code-stub-assembler.h"
 #include "src/ic/ic-state.h"
 #include "src/interface-descriptors.h"
 #include "src/isolate.h"
@@ skipping 84 matching lines @@
 Code* BuildWithCodeStubAssemblerCS(Isolate* isolate,
                                    CodeAssemblerGenerator generator,
                                    CallDescriptors::Key interface_descriptor,
                                    Code::Flags flags, const char* name) {
   HandleScope scope(isolate);
   Zone zone(isolate->allocator());
   // The interface descriptor with given key must be initialized at this point
   // and this construction just queries the details from the descriptors table.
   CallInterfaceDescriptor descriptor(isolate, interface_descriptor);
   // Ensure descriptor is already initialized.
-  DCHECK_NOT_NULL(descriptor.GetFunctionType());
+  DCHECK_LE(0, descriptor.GetRegisterParameterCount());
   CodeStubAssembler assembler(isolate, &zone, descriptor, flags, name);
   generator(&assembler);
   Handle<Code> code = assembler.GenerateCode();
   PostBuildProfileAndTracing(isolate, *code, name);
   return *code;
 }
 }  // anonymous namespace
 
 void Builtins::SetUp(Isolate* isolate, bool create_heap_objects) {
   DCHECK(!initialized_);
@@ skipping 85 matching lines @@
 #define DEFINE_BUILTIN_ACCESSOR(Name, ...)                                    \
   Handle<Code> Builtins::Name() {                                             \
     Code** code_address = reinterpret_cast<Code**>(builtin_address(k##Name)); \
     return Handle<Code>(code_address);                                        \
   }
 BUILTIN_LIST_ALL(DEFINE_BUILTIN_ACCESSOR)
 #undef DEFINE_BUILTIN_ACCESSOR
 
 }  // namespace internal
 }  // namespace v8