Enable concurrent sweep on MIPS and ARM64.

runtime/vm/disassembler_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/disassembler.h"
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_MIPS.
 #if defined(TARGET_ARCH_MIPS)
 #include "platform/assert.h"
 
@@ skipping 694 matching lines @@
       break;
     }
     case LHU: {
       Format(instr, "lhu 'rt, 'imms('rs)");
       break;
     }
     case LUI: {
       Format(instr, "lui 'rt, 'immu");
       break;
     }
+    case LL: {
+      Format(instr, "ll 'rt, 'imms('rs)");
+      break;
+    }
     case LW: {
       Format(instr, "lw 'rt, 'imms('rs)");
       break;
     }
     case LWC1: {
       Format(instr, "lwc1 'ft, 'imms('rs)");
       break;
     }
     case ORI: {
       Format(instr, "ori 'rt, 'rs, 'immu");
       break;
     }
     case SB: {
       Format(instr, "sb 'rt, 'imms('rs)");
       break;
     }
+    case SC: {
+      Format(instr, "sc 'rt, 'imms('rs)");
+      break;
+    }
     case SLTI: {
       Format(instr, "slti 'rt, 'rs, 'imms");
       break;
     }
     case SLTIU: {
       Format(instr, "sltiu 'rt, 'rs, 'imms");
       break;
     }
     case SH: {
       Format(instr, "sh 'rt, 'imms('rs)");
@@ skipping 33 matching lines @@
   if (out_instr_len) {
     *out_instr_len = Instr::kInstrSize;
   }
 }
 
 #endif  // !PRODUCT
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS