[builtins] implement Array.prototype.includes in TurboFan

src/compiler/js-operator.cc

Index: src/compiler/js-operator.cc
diff --git a/src/compiler/js-operator.cc b/src/compiler/js-operator.cc
index 92c9d37894bef26c1b80017feaae943ff1730c27..6cc78f1ab242eac4f4da0a1c8c63041491f77c52 100644
--- a/src/compiler/js-operator.cc
+++ b/src/compiler/js-operator.cc
@@ -399,7 +399,8 @@ const CompareOperationHints& CompareOperationHintsOf(const Operator* op) {
          op->opcode() == IrOpcode::kJSLessThan ||
          op->opcode() == IrOpcode::kJSGreaterThan ||
          op->opcode() == IrOpcode::kJSLessThanOrEqual ||
-         op->opcode() == IrOpcode::kJSGreaterThanOrEqual);
+         op->opcode() == IrOpcode::kJSGreaterThanOrEqual ||
+         op->opcode() == IrOpcode::kJSSameValueZero);
   return OpParameter<CompareOperationHints>(op);
 }
 
@@ -592,6 +593,14 @@ const Operator* JSOperatorBuilder::StrictNotEqual(CompareOperationHints hints) {
       hints);                                            // parameter
 }
 
+const Operator* JSOperatorBuilder::SameValueZero(CompareOperationHints hints) {
+  return new (zone()) Operator1<CompareOperationHints>(  //--
+      IrOpcode::kJSSameValueZero, Operator::kPure,       // opcode
+      "JSSameValueZero",                                 // name
+      2, 0, 0, 1, 0, 0,                                  // inputs/outputs
+      hints);                                            // parameter
+}
+
 const Operator* JSOperatorBuilder::LessThan(CompareOperationHints hints) {
   // TODO(turbofan): Cache most important versions of this operator.
   return new (zone()) Operator1<CompareOperationHints>(  //--