[turbofan] Desugar JSUnaryNot(x) to Select(x, false, true).

src/compiler/js-typed-lowering.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_JS_TYPED_LOWERING_H_
 #define V8_COMPILER_JS_TYPED_LOWERING_H_
 
 #include "src/base/flags.h"
 #include "src/compiler/graph-reducer.h"
 #include "src/compiler/opcodes.h"
@@ skipping 42 matching lines @@
   Reduction ReduceJSMultiply(Node* node);
   Reduction ReduceJSComparison(Node* node);
   Reduction ReduceJSLoadNamed(Node* node);
   Reduction ReduceJSLoadProperty(Node* node);
   Reduction ReduceJSStoreProperty(Node* node);
   Reduction ReduceJSInstanceOf(Node* node);
   Reduction ReduceJSLoadContext(Node* node);
   Reduction ReduceJSStoreContext(Node* node);
   Reduction ReduceJSEqual(Node* node, bool invert);
   Reduction ReduceJSStrictEqual(Node* node, bool invert);
-  Reduction ReduceJSUnaryNot(Node* node);
   Reduction ReduceJSToBoolean(Node* node);
   Reduction ReduceJSToNumberInput(Node* input);
   Reduction ReduceJSToNumber(Node* node);
   Reduction ReduceJSToStringInput(Node* input);
   Reduction ReduceJSToString(Node* node);
   Reduction ReduceJSToObject(Node* node);
   Reduction ReduceJSConvertReceiver(Node* node);
   Reduction ReduceJSCreate(Node* node);
   Reduction ReduceJSCreateArguments(Node* node);
   Reduction ReduceJSCreateArray(Node* node);
   Reduction ReduceJSCreateClosure(Node* node);
   Reduction ReduceJSCreateLiteralArray(Node* node);
   Reduction ReduceJSCreateLiteralObject(Node* node);
   Reduction ReduceJSCreateFunctionContext(Node* node);
   Reduction ReduceJSCreateWithContext(Node* node);
   Reduction ReduceJSCreateBlockContext(Node* node);
   Reduction ReduceJSCallFunction(Node* node);
   Reduction ReduceJSForInDone(Node* node);
   Reduction ReduceJSForInNext(Node* node);
   Reduction ReduceJSForInPrepare(Node* node);
   Reduction ReduceJSForInStep(Node* node);
+  Reduction ReduceSelect(Node* node);
   Reduction ReduceNumberBinop(Node* node, const Operator* numberOp);
   Reduction ReduceInt32Binop(Node* node, const Operator* intOp);
   Reduction ReduceUI32Shift(Node* node, Signedness left_signedness,
                             const Operator* shift_op);
   Reduction ReduceNewArray(Node* node, Node* length, int capacity,
                            Handle<AllocationSite> site);
 
   Node* Word32Shl(Node* const lhs, int32_t const rhs);
   Node* AllocateArguments(Node* effect, Node* control, Node* frame_state);
   Node* AllocateAliasedArguments(Node* effect, Node* control, Node* frame_state,
@@ skipping 15 matching lines @@
   Flags flags() const { return flags_; }
 
   // Limits up to which context allocations are inlined.
   static const int kFunctionContextAllocationLimit = 16;
   static const int kBlockContextAllocationLimit = 16;
 
   CompilationDependencies* dependencies_;
   Flags flags_;
   JSGraph* jsgraph_;
   Type* shifted_int32_ranges_[4];
+  Type* const true_type_;
+  Type* const false_type_;
   Type* const the_hole_type_;
   TypeCache const& type_cache_;
 };
 
 DEFINE_OPERATORS_FOR_FLAGS(JSTypedLowering::Flags)
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_JS_TYPED_LOWERING_H_