MIPS: Fix 'MIPS:r6 compact branch optimization.'

src/mips/constants-mips.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_MIPS
 
 #include "src/mips/constants-mips.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 148 matching lines @@
       break;
     case SPECIAL:
       switch (instr & kFunctionFieldMask) {
         case JR:
         case JALR:
           return true;
         default:
           return false;
       }
       break;
+    case COP1:
+      switch (instr & kRsFieldMask) {
+        case BC1:
+        case BC1EQZ:
+        case BC1NEZ:
+          return true;
+          break;
+        default:
+          return false;
+      }
+      break;
     default:
       return false;
   }
 }
 
 
 bool Instruction::IsLinkingInstruction() const {
   switch (OpcodeFieldRaw()) {
     case JAL:
       return true;
@@ skipping 40 matching lines @@
         return false;
     }
   }
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS