[turbofan] Introduce ToBooleanHints on ToBoolean operators.

src/compiler/js-operator.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/js-operator.h"
 
 #include <limits>
 
 #include "src/base/lazy-instance.h"
 #include "src/compiler/opcodes.h"
@@ skipping 28 matching lines @@
   return base::hash_combine(p.slot(), p.vector().location());
 }
 
 
 ConvertReceiverMode ConvertReceiverModeOf(Operator const* op) {
   DCHECK_EQ(IrOpcode::kJSConvertReceiver, op->opcode());
   return OpParameter<ConvertReceiverMode>(op);
 }
 
 
+ToBooleanHints ToBooleanHintsOf(Operator const* op) {
+  DCHECK_EQ(IrOpcode::kJSToBoolean, op->opcode());
+  return OpParameter<ToBooleanHints>(op);
+}
+
+
 size_t hash_value(TailCallMode mode) {
   return base::hash_value(static_cast<unsigned>(mode));
 }
 
 
 std::ostream& operator<<(std::ostream& os, TailCallMode mode) {
   switch (mode) {
     case TailCallMode::kAllow:
       return os << "ALLOW_TAIL_CALLS";
     case TailCallMode::kDisallow:
@@ skipping 420 matching lines @@
          op->opcode() == IrOpcode::kJSCreateLiteralRegExp);
   return OpParameter<CreateLiteralParameters>(op);
 }
 
 
 #define CACHED_OP_LIST(V)                             \
   V(Equal, Operator::kNoProperties, 2, 1)             \
   V(NotEqual, Operator::kNoProperties, 2, 1)          \
   V(StrictEqual, Operator::kNoThrow, 2, 1)            \
   V(StrictNotEqual, Operator::kNoThrow, 2, 1)         \
-  V(ToBoolean, Operator::kEliminatable, 1, 1)         \
   V(ToNumber, Operator::kNoProperties, 1, 1)          \
   V(ToString, Operator::kNoProperties, 1, 1)          \
   V(ToName, Operator::kNoProperties, 1, 1)            \
   V(ToObject, Operator::kNoProperties, 1, 1)          \
   V(Yield, Operator::kNoProperties, 1, 1)             \
   V(Create, Operator::kEliminatable, 2, 1)            \
   V(HasProperty, Operator::kNoProperties, 2, 1)       \
   V(TypeOf, Operator::kEliminatable, 1, 1)            \
   V(InstanceOf, Operator::kNoProperties, 2, 1)        \
   V(ForInDone, Operator::kPure, 2, 1)                 \
@@ skipping 210 matching lines @@
   // TODO(turbofan): Cache most important versions of this operator.
   BinaryOperationParameters parameters(language_mode, hints);
   return new (zone()) Operator1<BinaryOperationParameters>(  //--
       IrOpcode::kJSModulus, Operator::kNoProperties,         // opcode
       "JSModulus",                                           // name
       2, 1, 1, 1, 1, 2,                                      // inputs/outputs
       parameters);                                           // parameter
 }
 
 
+const Operator* JSOperatorBuilder::ToBoolean(ToBooleanHints hints) {
+  // TODO(turbofan): Cache most important versions of this operator.
+  return new (zone()) Operator1<ToBooleanHints>(        //--
+      IrOpcode::kJSToBoolean, Operator::kEliminatable,  // opcode
+      "JSToBoolean",                                    // name
+      1, 1, 0, 1, 1, 0,                                 // inputs/outputs
+      hints);                                           // parameter
+}
+
+
 const Operator* JSOperatorBuilder::CallFunction(
     size_t arity, LanguageMode language_mode, VectorSlotPair const& feedback,
     ConvertReceiverMode convert_mode, TailCallMode tail_call_mode) {
   CallFunctionParameters parameters(arity, language_mode, feedback,
                                     tail_call_mode, convert_mode);
   return new (zone()) Operator1<CallFunctionParameters>(   // --
       IrOpcode::kJSCallFunction, Operator::kNoProperties,  // opcode
       "JSCallFunction",                                    // name
       parameters.arity(), 1, 1, 1, 1, 2,                   // inputs/outputs
       parameters);                                         // parameter
@@ skipping 255 matching lines @@
   return new (zone()) Operator1<Handle<ScopeInfo>>(               // --
       IrOpcode::kJSCreateScriptContext, Operator::kNoProperties,  // opcode
       "JSCreateScriptContext",                                    // name
       1, 1, 1, 1, 1, 2,                                           // counts
       scpope_info);                                               // parameter
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8