Simplify MacroAssembler::InvokePrologue a bit.

src/ppc/macro-assembler-ppc.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_PPC_MACRO_ASSEMBLER_PPC_H_
 #define V8_PPC_MACRO_ASSEMBLER_PPC_H_
 
 #include "src/assembler.h"
 #include "src/bailout-reason.h"
 #include "src/frames.h"
@@ skipping 1468 matching lines @@
   static const int kSmiShift = kSmiTagSize + kSmiShiftSize;
 
   void CallCFunctionHelper(Register function, int num_reg_arguments,
                            int num_double_arguments);
 
   void Jump(intptr_t target, RelocInfo::Mode rmode, Condition cond = al,
             CRegister cr = cr7);
 
   // Helper functions for generating invokes.
   void InvokePrologue(const ParameterCount& expected,
-                      const ParameterCount& actual, Handle<Code> code_constant,
-                      Register code_reg, Label* done,
+                      const ParameterCount& actual, Label* done,
                       bool* definitely_mismatches, InvokeFlag flag,
                       const CallWrapper& call_wrapper);
 
   void InitializeNewString(Register string, Register length,
                            Heap::RootListIndex map_index, Register scratch1,
                            Register scratch2);
 
   // Helper for implementing JumpIfNotInNewSpace and JumpIfInNewSpace.
   void InNewSpace(Register object, Register scratch,
                   Condition cond,  // eq for new space, ne otherwise.
@@ skipping 74 matching lines @@
 #define ACCESS_MASM(masm)    \
   masm->stop(__FILE_LINE__); \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PPC_MACRO_ASSEMBLER_PPC_H_