[runtime] TailCallRuntime and CallRuntime should use default argument counts

src/mips64/macro-assembler-mips64.h

Index: src/mips64/macro-assembler-mips64.h
diff --git a/src/mips64/macro-assembler-mips64.h b/src/mips64/macro-assembler-mips64.h
index a8658141e2d282683007aa59c58222a1a235dfde..7f8486af4ec361a45830351c54f1fd761fd00a46 100644
--- a/src/mips64/macro-assembler-mips64.h
+++ b/src/mips64/macro-assembler-mips64.h
@@ -1355,16 +1355,24 @@ const Operand& rt = Operand(zero_reg), BranchDelaySlot bd = PROTECT
   void CallRuntime(const Runtime::Function* f, int num_arguments,
                    SaveFPRegsMode save_doubles = kDontSaveFPRegs,
                    BranchDelaySlot bd = PROTECT);
-  void CallRuntimeSaveDoubles(Runtime::FunctionId id) {
-    const Runtime::Function* function = Runtime::FunctionForId(id);
+  void CallRuntimeSaveDoubles(Runtime::FunctionId fid) {
+    const Runtime::Function* function = Runtime::FunctionForId(fid);
     CallRuntime(function, function->nargs, kSaveFPRegs);
   }
 
   // Convenience function: Same as above, but takes the fid instead.
-  void CallRuntime(Runtime::FunctionId id, int num_arguments,
+  void CallRuntime(Runtime::FunctionId fid,
                    SaveFPRegsMode save_doubles = kDontSaveFPRegs,
                    BranchDelaySlot bd = PROTECT) {
-    CallRuntime(Runtime::FunctionForId(id), num_arguments, save_doubles, bd);
+    const Runtime::Function* function = Runtime::FunctionForId(fid);
+    CallRuntime(function, function->nargs, save_doubles, bd);
+  }
+
+  // Convenience function: Same as above, but takes the fid instead.
+  void CallRuntime(Runtime::FunctionId fid, int num_arguments,
+                   SaveFPRegsMode save_doubles = kDontSaveFPRegs,
+                   BranchDelaySlot bd = PROTECT) {
+    CallRuntime(Runtime::FunctionForId(fid), num_arguments, save_doubles, bd);
   }
 
   // Convenience function: call an external reference.
@@ -1372,14 +1380,8 @@ const Operand& rt = Operand(zero_reg), BranchDelaySlot bd = PROTECT
                              int num_arguments,
                              BranchDelaySlot bd = PROTECT);
 
-  // Tail call of a runtime routine (jump).
-  // Like JumpToExternalReference, but also takes care of passing the number
-  // of parameters.
-  void TailCallExternalReference(const ExternalReference& ext,
-                                 int num_arguments);
-
   // Convenience function: tail call a runtime routine (jump).
-  void TailCallRuntime(Runtime::FunctionId fid, int num_arguments);
+  void TailCallRuntime(Runtime::FunctionId fid);
 
   int CalculateStackPassedWords(int num_reg_arguments,
                                 int num_double_arguments);