[runtime] TailCallRuntime and CallRuntime should use default argument counts

src/mips/macro-assembler-mips.h

Index: src/mips/macro-assembler-mips.h
diff --git a/src/mips/macro-assembler-mips.h b/src/mips/macro-assembler-mips.h
index 581f3020457a7bc96e01e9395d2debeb8ac00011..557f6f37b678f2da9727b17bdbc30bb7b231b9e5 100644
--- a/src/mips/macro-assembler-mips.h
+++ b/src/mips/macro-assembler-mips.h
@@ -1245,6 +1245,14 @@ const Operand& rt = Operand(zero_reg), BranchDelaySlot bd = PROTECT
   }
 
   // Convenience function: Same as above, but takes the fid instead.
+  void CallRuntime(Runtime::FunctionId fid,
+                   SaveFPRegsMode save_doubles = kDontSaveFPRegs,
+                   BranchDelaySlot bd = PROTECT) {
+    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 id, int num_arguments,
                    SaveFPRegsMode save_doubles = kDontSaveFPRegs,
                    BranchDelaySlot bd = PROTECT) {
@@ -1256,14 +1264,9 @@ 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);