Fix code for store buffer update on ARM and MIPS (link register was trashed).

runtime/vm/intrinsifier_mips.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"  // Needed here to get TARGET_ARCH_MIPS.
 #if defined(TARGET_ARCH_MIPS)
 
 #include "vm/intrinsifier.h"
 
 #include "vm/assembler.h"
@@ skipping 223 matching lines @@
   __ bne(CMPRES, ZR, &fall_through);
 
   __ lw(T0, Address(SP, 2 * kWordSize));  // Array.
   // Range check.
   __ lw(T3, FieldAddress(T0, Array::length_offset()));  // Array length.
   // Runtime throws exception.
   __ BranchUnsignedGreaterEqual(T1, T3, &fall_through);
 
   // Note that T1 is Smi, i.e, times 2.
   ASSERT(kSmiTagShift == 1);
-  // Destroy T2 as we will not continue in the function.
   __ lw(T2, Address(SP, 0 * kWordSize));  // Value.
   __ sll(T1, T1, 1);  // T1 is Smi.
   __ addu(T1, T0, T1);
   __ StoreIntoObject(T0,
                      FieldAddress(T1, Array::data_offset()),
                      T2);
   // Caller is responsible for preserving the value if necessary.
   __ Ret();
   __ Bind(&fall_through);
   return false;
@@ skipping 1515 matching lines @@
   __ Bind(&ok);
   __ Ret();
 
   __ Bind(&fall_through);
   return false;
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS