[turbofan] Add NumberOperationHint for speculative number operations.

src/compiler/simplified-operator.h

 // 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.
 
 #ifndef V8_COMPILER_SIMPLIFIED_OPERATOR_H_
 #define V8_COMPILER_SIMPLIFIED_OPERATOR_H_
 
 #include <iosfwd>
 
 #include "src/compiler/operator.h"
-#include "src/compiler/type-hints.h"
 #include "src/handles.h"
 #include "src/machine-type.h"
 #include "src/objects.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations.
 class Type;
 class Zone;
@@ skipping 125 matching lines @@
   kFastTransition,  // simple transition, just updating the map.
   kSlowTransition   // full transition, round-trip to the runtime.
 };
 
 size_t hash_value(ElementsTransition);
 
 std::ostream& operator<<(std::ostream&, ElementsTransition);
 
 ElementsTransition ElementsTransitionOf(const Operator* op) WARN_UNUSED_RESULT;
 
-BinaryOperationHints::Hint BinaryOperationHintOf(const Operator* op);
+// A hint for speculative number operations.
+enum class NumberOperationHint : uint8_t {
+  kSignedSmall,      // Inputs were always Smi so far, output was in Smi range.
+  kSigned32,         // Inputs and output were Signed32 so far.
+  kNumberOrOddball,  // Inputs were Number or Oddball, output was Number.
+};
 
-CompareOperationHints::Hint CompareOperationHintOf(const Operator* op);
+size_t hash_value(NumberOperationHint);
+
+std::ostream& operator<<(std::ostream&, NumberOperationHint);
+
+NumberOperationHint NumberOperationHintOf(const Operator* op)
+    WARN_UNUSED_RESULT;
 
 // Interface for building simplified operators, which represent the
 // medium-level operations of V8, including adding numbers, allocating objects,
 // indexing into objects and arrays, etc.
 // All operators are typed but many are representation independent.
 
 // Number values from JS can be in one of these representations:
 //   - Tagged: word-sized integer that is either
 //     - a signed small integer (31 or 32 bits plus a tag)
 //     - a tagged pointer to a HeapNumber object that has a float64 field
@@ skipping 61 matching lines @@
   const Operator* NumberSinh();
   const Operator* NumberSqrt();
   const Operator* NumberTan();
   const Operator* NumberTanh();
   const Operator* NumberTrunc();
   const Operator* NumberToInt32();
   const Operator* NumberToUint32();
 
   const Operator* NumberSilenceNaN();
 
-  const Operator* SpeculativeNumberAdd(BinaryOperationHints::Hint hint);
-  const Operator* SpeculativeNumberSubtract(BinaryOperationHints::Hint hint);
-  const Operator* SpeculativeNumberMultiply(BinaryOperationHints::Hint hint);
-  const Operator* SpeculativeNumberDivide(BinaryOperationHints::Hint hint);
-  const Operator* SpeculativeNumberModulus(BinaryOperationHints::Hint hint);
-  const Operator* SpeculativeNumberShiftLeft(BinaryOperationHints::Hint hint);
-  const Operator* SpeculativeNumberShiftRight(BinaryOperationHints::Hint hint);
-  const Operator* SpeculativeNumberShiftRightLogical(
-      BinaryOperationHints::Hint hint);
-  const Operator* SpeculativeNumberBitwiseAnd(BinaryOperationHints::Hint hint);
-  const Operator* SpeculativeNumberBitwiseOr(BinaryOperationHints::Hint hint);
-  const Operator* SpeculativeNumberBitwiseXor(BinaryOperationHints::Hint hint);
+  const Operator* SpeculativeNumberAdd(NumberOperationHint hint);
+  const Operator* SpeculativeNumberSubtract(NumberOperationHint hint);
+  const Operator* SpeculativeNumberMultiply(NumberOperationHint hint);
+  const Operator* SpeculativeNumberDivide(NumberOperationHint hint);
+  const Operator* SpeculativeNumberModulus(NumberOperationHint hint);
+  const Operator* SpeculativeNumberShiftLeft(NumberOperationHint hint);
+  const Operator* SpeculativeNumberShiftRight(NumberOperationHint hint);
+  const Operator* SpeculativeNumberShiftRightLogical(NumberOperationHint hint);
+  const Operator* SpeculativeNumberBitwiseAnd(NumberOperationHint hint);
+  const Operator* SpeculativeNumberBitwiseOr(NumberOperationHint hint);
+  const Operator* SpeculativeNumberBitwiseXor(NumberOperationHint hint);
 
-  const Operator* SpeculativeNumberLessThan(CompareOperationHints::Hint hint);
-  const Operator* SpeculativeNumberLessThanOrEqual(
-      CompareOperationHints::Hint hint);
-  const Operator* SpeculativeNumberEqual(CompareOperationHints::Hint hint);
+  const Operator* SpeculativeNumberLessThan(NumberOperationHint hint);
+  const Operator* SpeculativeNumberLessThanOrEqual(NumberOperationHint hint);
+  const Operator* SpeculativeNumberEqual(NumberOperationHint hint);
 
   const Operator* ReferenceEqual(Type* type);
 
   const Operator* StringEqual();
   const Operator* StringLessThan();
   const Operator* StringLessThanOrEqual();
   const Operator* StringCharCodeAt();
   const Operator* StringFromCharCode();
 
   const Operator* PlainPrimitiveToNumber();
@@ skipping 81 matching lines @@
   Zone* const zone_;
 
   DISALLOW_COPY_AND_ASSIGN(SimplifiedOperatorBuilder);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_SIMPLIFIED_OPERATOR_H_