[arm64] Turn Word64And into tst instruction when possible.

src/compiler/arm64/instruction-selector-arm64.cc

 // Copyright 2014 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.
 
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
@@ skipping 1139 matching lines @@
         break;
       case IrOpcode::kInt32Add:
         return VisitWordCompare(this, value, kArm64Cmn32, &cont, true,
                                 kArithmeticImm);
       case IrOpcode::kInt32Sub:
         return VisitWordCompare(this, value, kArm64Cmp32, &cont, false,
                                 kArithmeticImm);
       case IrOpcode::kWord32And:
         return VisitWordCompare(this, value, kArm64Tst32, &cont, true,
                                 kLogical32Imm);
+      case IrOpcode::kWord64And:
+        return VisitWordCompare(this, value, kArm64Tst, &cont, true,
+                                kLogical64Imm);
       default:
         break;
     }
   }
 
   // Branch could not be combined with a compare, emit compare against 0.
   VisitWord32Test(this, value, &cont);
 }
 
 
@@ skipping 129 matching lines @@
 
 // static
 MachineOperatorBuilder::Flags
 InstructionSelector::SupportedMachineOperatorFlags() {
   return MachineOperatorBuilder::kNoFlags;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8