[turbofan] Add Int64(Add|Sub)WithOverflow support.

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"
 #include "src/compiler/node-properties.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 1829 matching lines @@
           if (result == NULL || IsDefined(result)) {
             switch (node->opcode()) {
               case IrOpcode::kInt32AddWithOverflow:
                 cont.OverwriteAndNegateIfEqual(kOverflow);
                 return VisitBinop<Int32BinopMatcher>(this, node, kArm64Add32,
                                                      kArithmeticImm, &cont);
               case IrOpcode::kInt32SubWithOverflow:
                 cont.OverwriteAndNegateIfEqual(kOverflow);
                 return VisitBinop<Int32BinopMatcher>(this, node, kArm64Sub32,
                                                      kArithmeticImm, &cont);
+              case IrOpcode::kInt64AddWithOverflow:
+                cont.OverwriteAndNegateIfEqual(kOverflow);
+                return VisitBinop<Int64BinopMatcher>(this, node, kArm64Add,
+                                                     kArithmeticImm, &cont);
+              case IrOpcode::kInt64SubWithOverflow:
+                cont.OverwriteAndNegateIfEqual(kOverflow);
+                return VisitBinop<Int64BinopMatcher>(this, node, kArm64Sub,
+                                                     kArithmeticImm, &cont);
               default:
                 break;
             }
           }
         }
         break;
       case IrOpcode::kInt32Add:
         return VisitWordCompare(this, value, kArm64Cmn32, &cont, true,
                                 kArithmeticImm);
       case IrOpcode::kInt32Sub:
@@ skipping 167 matching lines @@
   if (Node* ovf = NodeProperties::FindProjection(node, 1)) {
     FlagsContinuation cont(kOverflow, ovf);
     return VisitBinop<Int32BinopMatcher>(this, node, kArm64Sub32,
                                          kArithmeticImm, &cont);
   }
   FlagsContinuation cont;
   VisitBinop<Int32BinopMatcher>(this, node, kArm64Sub32, kArithmeticImm, &cont);
 }
 
 
+void InstructionSelector::VisitInt64AddWithOverflow(Node* node) {
+  if (Node* ovf = NodeProperties::FindProjection(node, 1)) {
+    FlagsContinuation cont(kOverflow, ovf);
+    return VisitBinop<Int64BinopMatcher>(this, node, kArm64Add, kArithmeticImm,
+                                         &cont);
+  }
+  FlagsContinuation cont;
+  VisitBinop<Int64BinopMatcher>(this, node, kArm64Add, kArithmeticImm, &cont);
+}
+
+
+void InstructionSelector::VisitInt64SubWithOverflow(Node* node) {
+  if (Node* ovf = NodeProperties::FindProjection(node, 1)) {
+    FlagsContinuation cont(kOverflow, ovf);
+    return VisitBinop<Int64BinopMatcher>(this, node, kArm64Sub, kArithmeticImm,
+                                         &cont);
+  }
+  FlagsContinuation cont;
+  VisitBinop<Int64BinopMatcher>(this, node, kArm64Sub, kArithmeticImm, &cont);
+}
+
+
 void InstructionSelector::VisitInt64LessThan(Node* node) {
   FlagsContinuation cont(kSignedLessThan, node);
   VisitWordCompare(this, node, kArm64Cmp, &cont, false, kArithmeticImm);
 }
 
 
 void InstructionSelector::VisitInt64LessThanOrEqual(Node* node) {
   FlagsContinuation cont(kSignedLessThanOrEqual, node);
   VisitWordCompare(this, node, kArm64Cmp, &cont, false, kArithmeticImm);
 }
@@ skipping 113 matching lines @@
          MachineOperatorBuilder::kFloat32RoundTiesEven |
          MachineOperatorBuilder::kFloat64RoundTiesEven |
          MachineOperatorBuilder::kWord32ShiftIsSafe |
          MachineOperatorBuilder::kInt32DivIsSafe |
          MachineOperatorBuilder::kUint32DivIsSafe;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8