[Interpreter] Change LogicalNot to ToBooleanLogicalNot and add non-ToBoolean version.

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index 323e9bec6b810652f79bf9d88d2e2d6234f86363..6eee48a045574c1a336cf6297105a348df164c95 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -862,22 +862,11 @@ void Interpreter::DoDec(InterpreterAssembler* assembler) {
   DoCountOp(CodeFactory::Dec(isolate_), assembler);
 }
 
-
-// LogicalNot
-//
-// Perform logical-not on the accumulator, first casting the
-// accumulator to a boolean value if required.
-void Interpreter::DoLogicalNot(InterpreterAssembler* assembler) {
-  Callable callable = CodeFactory::ToBoolean(isolate_);
-  Node* target = __ HeapConstant(callable.code());
-  Node* accumulator = __ GetAccumulator();
-  Node* context = __ GetContext();
-  Node* to_boolean_value =
-      __ CallStub(callable.descriptor(), target, context, accumulator);
+void Interpreter::DoLogicalNotOp(Node* value, InterpreterAssembler* assembler) {
   Label if_true(assembler), if_false(assembler), end(assembler);
   Node* true_value = __ BooleanConstant(true);
   Node* false_value = __ BooleanConstant(false);
-  __ BranchIfWordEqual(to_boolean_value, true_value, &if_true, &if_false);
+  __ BranchIfWordEqual(value, true_value, &if_true, &if_false);
   __ Bind(&if_true);
   {
     __ SetAccumulator(false_value);
@@ -885,10 +874,38 @@ void Interpreter::DoLogicalNot(InterpreterAssembler* assembler) {
   }
   __ Bind(&if_false);
   {
+    if (FLAG_debug_code) {
+      __ AbortIfWordNotEqual(value, false_value,
+                             BailoutReason::kExpectedBooleanValue);
+    }
     __ SetAccumulator(true_value);
     __ Goto(&end);
   }
   __ Bind(&end);
+}
+
+// ToBooleanLogicalNot
+//
+// Perform logical-not on the accumulator, first casting the
+// accumulator to a boolean value if required.
+void Interpreter::DoToBooleanLogicalNot(InterpreterAssembler* assembler) {
+  Callable callable = CodeFactory::ToBoolean(isolate_);
+  Node* target = __ HeapConstant(callable.code());
+  Node* accumulator = __ GetAccumulator();
+  Node* context = __ GetContext();
+  Node* to_boolean_value =
+      __ CallStub(callable.descriptor(), target, context, accumulator);
+  DoLogicalNotOp(to_boolean_value, assembler);
+  __ Dispatch();
+}
+
+// LogicalNot
+//
+// Perform logical-not on the accumulator, which must already be a boolean
+// value.
+void Interpreter::DoLogicalNot(InterpreterAssembler* assembler) {
+  Node* value = __ GetAccumulator();
+  DoLogicalNotOp(value, assembler);
   __ Dispatch();
 }