Enables optimization on MIPS

runtime/vm/simulator_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 <math.h>  // for isnan.
 #include <setjmp.h>
 #include <stdlib.h>
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_MIPS)
@@ skipping 1744 matching lines @@
       int32_t base_val = get_register(instr->RsField());
       int32_t imm_val = instr->SImmField();
       uword addr = base_val + imm_val;
       if (Simulator::IsIllegalAddress(addr)) {
         HandleIllegalAccess(addr, instr);
       } else {
         WriteB(addr, rt_val & 0xff);
       }
       break;
     }
+    case SLTI: {
+      // Format(instr, "slti 'rt, 'rs, 'imms");
+      int32_t rs_val = get_register(instr->RsField());
+      int32_t imm_val = instr->SImmField();
+      set_register(instr->RtField(), rs_val < imm_val ? 1 : 0);
+      break;
+    }
+    case SLTIU: {
+      // Format(instr, "slti 'rt, 'rs, 'immu");
+      uint32_t rs_val = get_register(instr->RsField());
+      uint32_t imm_val = instr->UImmField();
+      set_register(instr->RtField(), rs_val < imm_val ? 1 : 0);
+      break;
+    }
     case SDC1: {
       // Format(instr, "sdc1 'ft, 'imms('rs)");
       int32_t base_val = get_register(instr->RsField());
       int32_t imm_val = instr->SImmField();
       uword addr = base_val + imm_val;
       if (Simulator::IsIllegalAddress(addr)) {
         HandleIllegalAccess(addr, instr);
       } else {
         double value = get_fregister_double(instr->FtField());
         WriteD(addr, value, instr);
@@ skipping 220 matching lines @@
     set_register(kStackTraceObjectReg, bit_cast<int32_t>(raw_stacktrace));
   }
   buf->Longjmp();
 }
 
 }  // namespace dart
 
 #endif  // !defined(HOST_ARCH_MIPS)
 
 #endif  // defined TARGET_ARCH_MIPS