[turbofan] Remove special JSForInStep and JSForInDone.

src/compiler/js-typed-lowering.cc

Index: src/compiler/js-typed-lowering.cc
diff --git a/src/compiler/js-typed-lowering.cc b/src/compiler/js-typed-lowering.cc
index 07f4ddb6a3a5a93cef81a5fff34dd54018badeab..e282da8d170bf4c5aaab9562fe441a29e24548cb 100644
--- a/src/compiler/js-typed-lowering.cc
+++ b/src/compiler/js-typed-lowering.cc
@@ -1765,14 +1765,6 @@ Reduction JSTypedLowering::ReduceJSCallFunction(Node* node) {
 }
 
 
-Reduction JSTypedLowering::ReduceJSForInDone(Node* node) {
-  DCHECK_EQ(IrOpcode::kJSForInDone, node->opcode());
-  node->TrimInputCount(2);
-  NodeProperties::ChangeOp(node, machine()->Word32Equal());
-  return Changed(node);
-}
-
-
 Reduction JSTypedLowering::ReduceJSForInNext(Node* node) {
   DCHECK_EQ(IrOpcode::kJSForInNext, node->opcode());
   Node* receiver = NodeProperties::GetValueInput(node, 0);
@@ -1838,14 +1830,6 @@ Reduction JSTypedLowering::ReduceJSForInNext(Node* node) {
   return Changed(node);
 }
 
-
-Reduction JSTypedLowering::ReduceJSForInStep(Node* node) {
-  DCHECK_EQ(IrOpcode::kJSForInStep, node->opcode());
-  node->ReplaceInput(1, jsgraph()->Int32Constant(1));
-  NodeProperties::ChangeOp(node, machine()->Int32Add());
-  return Changed(node);
-}
-
 Reduction JSTypedLowering::ReduceJSGeneratorStore(Node* node) {
   DCHECK_EQ(IrOpcode::kJSGeneratorStore, node->opcode());
   Node* generator = NodeProperties::GetValueInput(node, 0);
@@ -1986,12 +1970,8 @@ Reduction JSTypedLowering::Reduce(Node* node) {
       return ReduceJSCallConstruct(node);
     case IrOpcode::kJSCallFunction:
       return ReduceJSCallFunction(node);
-    case IrOpcode::kJSForInDone:
-      return ReduceJSForInDone(node);
     case IrOpcode::kJSForInNext:
       return ReduceJSForInNext(node);
-    case IrOpcode::kJSForInStep:
-      return ReduceJSForInStep(node);
     case IrOpcode::kJSGeneratorStore:
       return ReduceJSGeneratorStore(node);
     case IrOpcode::kJSGeneratorRestoreContinuation:
@@ -2023,10 +2003,6 @@ CommonOperatorBuilder* JSTypedLowering::common() const {
   return jsgraph()->common();
 }
 
-MachineOperatorBuilder* JSTypedLowering::machine() const {
-  return jsgraph()->machine();
-}
-
 SimplifiedOperatorBuilder* JSTypedLowering::simplified() const {
   return jsgraph()->simplified();
 }