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

src/compiler/arm64/code-generator-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/code-generator.h"
 
 #include "src/arm64/frames-arm64.h"
 #include "src/arm64/macro-assembler-arm64.h"
 #include "src/ast/scopes.h"
 #include "src/compiler/code-generator-impl.h"
@@ skipping 639 matching lines @@
     case kArm64Float64RoundTruncate:
       __ Frintz(i.OutputDoubleRegister(), i.InputDoubleRegister(0));
       break;
     case kArm64Float32RoundTiesEven:
       __ Frintn(i.OutputFloat32Register(), i.InputFloat32Register(0));
       break;
     case kArm64Float64RoundTiesEven:
       __ Frintn(i.OutputDoubleRegister(), i.InputDoubleRegister(0));
       break;
     case kArm64Add:
+      if (FlagsModeField::decode(opcode) != kFlags_none) {
+        __ Adds(i.OutputRegister(), i.InputOrZeroRegister64(0),
+                i.InputOperand2_64(1));
+      } else {
       __ Add(i.OutputRegister(), i.InputOrZeroRegister64(0),
              i.InputOperand2_64(1));
+      }
       break;
     case kArm64Add32:
       if (FlagsModeField::decode(opcode) != kFlags_none) {
         __ Adds(i.OutputRegister32(), i.InputOrZeroRegister32(0),
                 i.InputOperand2_32(1));
       } else {
         __ Add(i.OutputRegister32(), i.InputOrZeroRegister32(0),
                i.InputOperand2_32(1));
       }
       break;
@@ skipping 121 matching lines @@
       break;
     case kArm64Eon:
       __ Eon(i.OutputRegister(), i.InputOrZeroRegister64(0),
              i.InputOperand2_64(1));
       break;
     case kArm64Eon32:
       __ Eon(i.OutputRegister32(), i.InputOrZeroRegister32(0),
              i.InputOperand2_32(1));
       break;
     case kArm64Sub:
+      if (FlagsModeField::decode(opcode) != kFlags_none) {
+        __ Subs(i.OutputRegister(), i.InputOrZeroRegister64(0),
+                i.InputOperand2_64(1));
+      } else {
       __ Sub(i.OutputRegister(), i.InputOrZeroRegister64(0),
              i.InputOperand2_64(1));
+      }
       break;
     case kArm64Sub32:
       if (FlagsModeField::decode(opcode) != kFlags_none) {
         __ Subs(i.OutputRegister32(), i.InputOrZeroRegister32(0),
                 i.InputOperand2_32(1));
       } else {
         __ Sub(i.OutputRegister32(), i.InputOrZeroRegister32(0),
                i.InputOperand2_32(1));
       }
       break;
@@ skipping 816 matching lines @@
       padding_size -= kInstructionSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8