VM: Clean up generated code for NoSuchMethod invocation of closures.

runtime/vm/stub_code_mips.cc

Index: runtime/vm/stub_code_mips.cc
===================================================================
--- runtime/vm/stub_code_mips.cc	(revision 39693)
+++ runtime/vm/stub_code_mips.cc	(working copy)
@@ -1299,7 +1299,6 @@
 // Input parameters:
 //  RA : return address.
 //  SP : address of last argument.
-//  S5: inline cache data object.
 //  S4: arguments descriptor array.
 void StubCode::GenerateCallNoSuchMethodFunctionStub(Assembler* assembler) {
   __ EnterStubFrame();
@@ -1314,19 +1313,19 @@
   // Push the receiver.
   // Push IC data object.
   // Push arguments descriptor array.
-  __ addiu(SP, SP, Immediate(-4 * kWordSize));
+  const intptr_t kNumArgs = 3;
+  __ addiu(SP, SP, Immediate(-kNumArgs * kWordSize));
   __ LoadImmediate(TMP, reinterpret_cast<intptr_t>(Object::null()));
-  __ sw(TMP, Address(SP, 3 * kWordSize));
-  __ sw(T6, Address(SP, 2 * kWordSize));
-  __ sw(S5, Address(SP, 1 * kWordSize));
+  __ sw(TMP, Address(SP, 2 * kWordSize));
+  __ sw(T6, Address(SP, 1 * kWordSize));
   __ sw(S4, Address(SP, 0 * kWordSize));
 
   // A1: Smi-tagged arguments array length.
   PushArgumentsArray(assembler);
 
-  __ CallRuntime(kInvokeNoSuchMethodFunctionRuntimeEntry, 4);
+  __ CallRuntime(kInvokeNoSuchMethodFunctionRuntimeEntry, kNumArgs);
 
-  __ lw(V0, Address(SP, 4 * kWordSize));  // Get result into V0.
+  __ lw(V0, Address(SP, kNumArgs * kWordSize));  // Get result into V0.
   __ LeaveStubFrameAndReturn();
 }