Hopefully fix warnings of uninitialized variables.

runtime/vm/intrinsifier_ia32.cc

 // Copyright (c) 2012, 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 1080 matching lines @@
       lo_false_cond = (true_condition == LESS) ? ABOVE_EQUAL : ABOVE;
       break;
     case GREATER:
     case GREATER_EQUAL:
       hi_true_cond = GREATER;
       hi_false_cond = LESS;
       lo_false_cond = (true_condition == GREATER) ? BELOW_EQUAL : BELOW;
       break;
     default:
       UNREACHABLE();
+      hi_true_cond = hi_false_cond = lo_false_cond = OVERFLOW;

[siva, 2012/10/25 00:36:33]

It seems weird to have this initialization code after
the UNREACHABLE() statement, could you do a return false;
instead to keep the compiler happy.

   }
   __ Bind(&try_mint_smi);
   // Note that EDX and ECX must be preserved in case we fall through to main
   // method.
   // EAX contains the right argument.
   __ movl(EBX, Address(ESP, + 2 * kWordSize));  // Left argument.
   // Push left as 64 bit integer.
   Push64SmiOrMint(assembler, EBX, EDI, &fall_through);
   // Push right as 64 bit integer.
   Push64SmiOrMint(assembler, EAX, EDI, &drop_two_fall_through);
@@ skipping 620 matching lines @@
   __ Bind(&is_true);
   __ LoadObject(EAX, bool_true);
   __ ret();
   return true;
 }
 
 #undef __
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32