Ensure that we do not accidentally emit debug code.

src/mips/lithium-codegen-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1986 matching lines @@
              BranchCondition(instr->hydrogen()),
              scratch,
              Operand(TestType(instr->hydrogen())));
 }
 
 
 void LCodeGen::DoGetCachedArrayIndex(LGetCachedArrayIndex* instr) {
   Register input = ToRegister(instr->value());
   Register result = ToRegister(instr->result());
 
-  __ AbortIfNotString(input);
+  __ AssertString(input);
 
   __ lw(result, FieldMemOperand(input, String::kHashFieldOffset));
   __ IndexFromHash(result, result);
 }
 
 
 void LCodeGen::DoHasCachedArrayIndexAndBranch(
     LHasCachedArrayIndexAndBranch* instr) {
   Register input = ToRegister(instr->value());
   Register scratch = scratch0();
@@ skipping 2003 matching lines @@
   if (instr->index()->IsConstantOperand()) {
     int const_index = ToInteger32(LConstantOperand::cast(instr->index()));
     __ Addu(scratch, zero_reg, Operand(Smi::FromInt(const_index)));
     __ push(scratch);
   } else {
     Register index = ToRegister(instr->index());
     __ SmiTag(index);
     __ push(index);
   }
   CallRuntimeFromDeferred(Runtime::kStringCharCodeAt, 2, instr);
-  if (FLAG_debug_code) {
-    __ AbortIfNotSmi(v0);
-  }
+  __ AssertSmi(v0);
   __ SmiUntag(v0);
   __ StoreToSafepointRegisterSlot(v0, result);
 }
 
 
 void LCodeGen::DoStringCharFromCode(LStringCharFromCode* instr) {
   class DeferredStringCharFromCode: public LDeferredCode {
    public:
     DeferredStringCharFromCode(LCodeGen* codegen, LStringCharFromCode* instr)
         : LDeferredCode(codegen), instr_(instr) { }
@@ skipping 1406 matching lines @@
   __ Subu(scratch, result, scratch);
   __ lw(result, FieldMemOperand(scratch,
                                 FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal