Add fast path smi comparison operators.

runtime/vm/intermediate_language_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/intermediate_language.h"
 
 #include "vm/compiler.h"
@@ skipping 2945 matching lines @@
       break;
     case Token::kBIT_OR:
       // Operation part of combined smi check.
       break;
     case Token::kBIT_AND:
       __ and_(result, left, right);
       break;
     case Token::kBIT_XOR:
       __ xor_(result, left, right);
       break;
+    case Token::kEQ:
+    case Token::kLT:
+    case Token::kLTE:
+    case Token::kGT:
+    case Token::kGTE: {
+      Label true_label, false_label, done;
+      BranchLabels labels = { &true_label, &false_label, &false_label };
+      Condition true_condition =
+          EmitSmiComparisonOp(compiler, *locs(), op_kind());
+      EmitBranchOnCondition(compiler, true_condition, labels);
+      __ Bind(&false_label);
+      __ LoadObject(result, Bool::False());
+      __ b(&done);
+      __ Bind(&true_label);
+      __ LoadObject(result, Bool::True());
+      __ Bind(&done);
+      break;
+    }
     default:
       UNIMPLEMENTED();
   }
   __ Bind(slow_path->exit_label());
 }
 
 
 LocationSummary* BinarySmiOpInstr::MakeLocationSummary(Zone* zone,
                                                        bool opt) const {
   const intptr_t kNumInputs = 2;
@@ skipping 2707 matching lines @@
                                 1,
                                 locs());
   __ lw(result, Address(SP, 1 * kWordSize));
   __ addiu(SP, SP, Immediate(2 * kWordSize));
 }
 
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS