Fix MegamorphicMiss stub on ARM.

runtime/vm/stub_code_arm.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/assembler.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
@@ skipping 419 matching lines @@
 
   // Preserve IC data and arguments descriptor.
   __ PushList((1 << R4) | (1 << R5));
 
   // Push space for the return value.
   // Push the receiver.
   // Push IC data object.
   // Push arguments descriptor array.
   __ LoadImmediate(IP, reinterpret_cast<intptr_t>(Object::null()));
   __ PushList((1 << R4) | (1 << R5) | (1 << R6) | (1 << IP));
-
-  // R2: Smi-tagged arguments array length.
-  PushArgumentsArray(assembler);
-
   __ CallRuntime(kMegamorphicCacheMissHandlerRuntimeEntry);
   // Remove arguments.
-  __ Drop(4);
+  __ Drop(3);
   __ Pop(R0);  // Get result into R0.
 
   // Restore IC data and arguments descriptor.
   __ PopList((1 << R4) | (1 << R5));
 
   __ LeaveStubFrame();
 
   __ CompareImmediate(R0, reinterpret_cast<intptr_t>(Object::null()));
   __ Branch(&StubCode::InstanceFunctionLookupLabel(), EQ);
   __ AddImmediate(R0, Instructions::HeaderSize() - kHeapObjectTag);
@@ skipping 1527 matching lines @@
   __ Bind(&reference_compare);
   __ cmp(left, ShifterOperand(right));
   __ Bind(&done);
   __ PopList((1 << R0) | (1 << R1) | (1 << R2));
   __ Ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM