Add checks to runtime functions.

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 1272 matching lines @@
   Register object = ToRegister(instr->InputAt(0));
   Register result = ToRegister(instr->result());
   Register scratch = ToRegister(instr->TempAt(0));
   Smi* index = instr->index();
   Label runtime, done;
   ASSERT(object.is(a0));
   ASSERT(result.is(v0));
   ASSERT(!scratch.is(scratch0()));
   ASSERT(!scratch.is(object));
 
-#ifdef DEBUG
-  __ AbortIfSmi(object);
+  __ And(at, object, Operand(kSmiTagMask));
+  DeoptimizeIf(eq, instr->environment(), at, Operand(zero_reg));
   __ GetObjectType(object, scratch, scratch);
-  __ Assert(eq, "Trying to get date field from non-date.",
-      scratch, Operand(JS_DATE_TYPE));
-#endif
+  DeoptimizeIf(ne, instr->environment(), scratch, Operand(JS_DATE_TYPE));
 
   if (index->value() == 0) {
     __ lw(result, FieldMemOperand(object, JSDate::kValueOffset));
   } else {
     if (index->value() < JSDate::kFirstUncachedField) {
       ExternalReference stamp = ExternalReference::date_cache_stamp(isolate());
       __ li(scratch, Operand(stamp));
       __ lw(scratch, MemOperand(scratch));
       __ lw(scratch0(), FieldMemOperand(object, JSDate::kCacheStampOffset));
       __ Branch(&runtime, ne, scratch, Operand(scratch0()));
@@ skipping 657 matching lines @@
              BranchCondition(instr->hydrogen()),
              scratch,
              Operand(TestType(instr->hydrogen())));
 }
 
 
 void LCodeGen::DoGetCachedArrayIndex(LGetCachedArrayIndex* instr) {
   Register input = ToRegister(instr->InputAt(0));
   Register result = ToRegister(instr->result());
 
-  if (FLAG_debug_code) {
-    __ AbortIfNotString(input);
-  }
+  __ AbortIfNotString(input);
 
   __ lw(result, FieldMemOperand(input, String::kHashFieldOffset));
   __ IndexFromHash(result, result);
 }
 
 
 void LCodeGen::DoHasCachedArrayIndexAndBranch(
     LHasCachedArrayIndexAndBranch* instr) {
   Register input = ToRegister(instr->InputAt(0));
   Register scratch = scratch0();
@@ skipping 3432 matching lines @@
   __ Subu(scratch, result, scratch);
   __ lw(result, FieldMemOperand(scratch,
                                 FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal