[turbofan] introduce Int32/64AbsWithOverflow optional operator

src/compiler/machine-operator.h

 // Copyright 2013 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.
 
 #ifndef V8_COMPILER_MACHINE_OPERATOR_H_
 #define V8_COMPILER_MACHINE_OPERATOR_H_
 
 #include "src/base/compiler-specific.h"
 #include "src/base/flags.h"
 #include "src/globals.h"
@@ skipping 113 matching lines @@
     kUint32DivIsSafe = 1u << 10,
     kWord32ShiftIsSafe = 1u << 11,
     kWord32Ctz = 1u << 12,
     kWord64Ctz = 1u << 13,
     kWord32Popcnt = 1u << 14,
     kWord64Popcnt = 1u << 15,
     kWord32ReverseBits = 1u << 16,
     kWord64ReverseBits = 1u << 17,
     kWord32ReverseBytes = 1u << 18,
     kWord64ReverseBytes = 1u << 19,
-    kAllOptionalOps = kFloat32RoundDown | kFloat64RoundDown | kFloat32RoundUp |
-                      kFloat64RoundUp | kFloat32RoundTruncate |
-                      kFloat64RoundTruncate | kFloat64RoundTiesAway |
-                      kFloat32RoundTiesEven | kFloat64RoundTiesEven |
-                      kWord32Ctz | kWord64Ctz | kWord32Popcnt | kWord64Popcnt |
-                      kWord32ReverseBits | kWord64ReverseBits |
-                      kWord32ReverseBytes | kWord64ReverseBytes
+    kInt32AbsWithOverflow = 1u << 20,
+    kInt64AbsWithOverflow = 1u << 21,
+    kAllOptionalOps =
+        kFloat32RoundDown | kFloat64RoundDown | kFloat32RoundUp |
+        kFloat64RoundUp | kFloat32RoundTruncate | kFloat64RoundTruncate |
+        kFloat64RoundTiesAway | kFloat32RoundTiesEven | kFloat64RoundTiesEven |
+        kWord32Ctz | kWord64Ctz | kWord32Popcnt | kWord64Popcnt |
+        kWord32ReverseBits | kWord64ReverseBits | kWord32ReverseBytes |
+        kWord64ReverseBytes | kInt32AbsWithOverflow | kInt64AbsWithOverflow
   };
   typedef base::Flags<Flag, unsigned> Flags;
 
   class AlignmentRequirements {
    public:
     enum UnalignedAccessSupport { kNoSupport, kSomeSupport, kFullSupport };
 
     bool IsUnalignedLoadSupported(const MachineType& machineType,
                                   uint8_t alignment) const {
       return IsUnalignedSupported(unalignedLoadUnsupportedTypes_, machineType,
@@ skipping 72 matching lines @@
   const Operator* Word32Ror();
   const Operator* Word32Equal();
   const Operator* Word32Clz();
   const OptionalOperator Word32Ctz();
   const OptionalOperator Word32Popcnt();
   const OptionalOperator Word64Popcnt();
   const OptionalOperator Word32ReverseBits();
   const OptionalOperator Word64ReverseBits();
   const OptionalOperator Word32ReverseBytes();
   const OptionalOperator Word64ReverseBytes();
+  const OptionalOperator Int32AbsWithOverflow();
+  const OptionalOperator Int64AbsWithOverflow();
   bool Word32ShiftIsSafe() const { return flags_ & kWord32ShiftIsSafe; }
 
   const Operator* Word64And();
   const Operator* Word64Or();
   const Operator* Word64Xor();
   const Operator* Word64Shl();
   const Operator* Word64Shr();
   const Operator* Word64Sar();
   const Operator* Word64Ror();
   const Operator* Word64Clz();
@@ skipping 431 matching lines @@
 };
 
 
 DEFINE_OPERATORS_FOR_FLAGS(MachineOperatorBuilder::Flags)
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_MACHINE_OPERATOR_H_