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

runtime/vm/intrinsifier_ia32.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.
 //
 // The intrinsic code below is executed before a method has built its frame.
 // The return address is on the stack and the arguments below it.
 // Registers EDX (arguments descriptor) and ECX (function) must be preserved.
 // Each intrinsification method returns true if the corresponding
 // Dart method was intrinsified.
 
@@ skipping 217 matching lines @@
   __ testl(EBX, Immediate(kSmiTagMask));
   // Index not Smi.
   __ j(NOT_ZERO, &fall_through);
   __ movl(EAX, Address(ESP, + 3 * kWordSize));  // Array.
   // Range check.
   __ cmpl(EBX, FieldAddress(EAX, Array::length_offset()));
   // Runtime throws exception.
   __ j(ABOVE_EQUAL, &fall_through);
   // Note that EBX is Smi, i.e, times 2.
   ASSERT(kSmiTagShift == 1);
-  // Destroy ECX as we will not continue in the function.
+  // Destroy ECX (ic data) as we will not continue in the function.
   __ movl(ECX, Address(ESP, + 1 * kWordSize));  // Value.
   __ StoreIntoObject(EAX,
                      FieldAddress(EAX, EBX, TIMES_2, Array::data_offset()),
                      ECX);
   // Caller is responsible of preserving the value if necessary.
   __ ret();
   __ Bind(&fall_through);
   return false;
 }
 
@@ skipping 1512 matching lines @@
   __ ret();
 
   __ Bind(&fall_through);
   return false;
 }
 
 #undef __
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32