[turbofan] Move lowering of ObjectIs* nodes to ChangeLowering.

src/compiler/simplified-lowering.cc

Index: src/compiler/simplified-lowering.cc
diff --git a/src/compiler/simplified-lowering.cc b/src/compiler/simplified-lowering.cc
index dedcfe6bce3c489db416f4948c99ad2bd3ce314e..38df48e18ef186a466d630ff8805e4f87689eb5b 100644
--- a/src/compiler/simplified-lowering.cc
+++ b/src/compiler/simplified-lowering.cc
@@ -1241,19 +1241,16 @@ class RepresentationSelector {
       case IrOpcode::kObjectIsNumber: {
         ProcessInput(node, 0, UseInfo::AnyTagged());
         SetOutput(node, NodeOutputInfo::Bool());
-        if (lower()) lowering->DoObjectIsNumber(node);
         break;
       }
       case IrOpcode::kObjectIsReceiver: {
         ProcessInput(node, 0, UseInfo::AnyTagged());
         SetOutput(node, NodeOutputInfo::Bool());
-        if (lower()) lowering->DoObjectIsReceiver(node);
         break;
       }
       case IrOpcode::kObjectIsSmi: {
         ProcessInput(node, 0, UseInfo::AnyTagged());
         SetOutput(node, NodeOutputInfo::Bool());
-        if (lower()) lowering->DoObjectIsSmi(node);
         break;
       }
 
@@ -1591,80 +1588,6 @@ void SimplifiedLowering::DoStoreBuffer(Node* node) {
 }
 
 
-void SimplifiedLowering::DoObjectIsNumber(Node* node) {
-  Node* input = NodeProperties::GetValueInput(node, 0);
-  // TODO(bmeurer): Optimize somewhat based on input type.
-  Node* check = IsSmi(input);
-  Node* branch = graph()->NewNode(common()->Branch(), check, graph()->start());
-  Node* if_true = graph()->NewNode(common()->IfTrue(), branch);
-  Node* vtrue = jsgraph()->Int32Constant(1);
-  Node* if_false = graph()->NewNode(common()->IfFalse(), branch);
-  Node* vfalse = graph()->NewNode(
-      machine()->WordEqual(), LoadHeapObjectMap(input, if_false),
-      jsgraph()->HeapConstant(isolate()->factory()->heap_number_map()));
-  Node* control = graph()->NewNode(common()->Merge(2), if_true, if_false);
-  node->ReplaceInput(0, vtrue);
-  node->AppendInput(graph()->zone(), vfalse);
-  node->AppendInput(graph()->zone(), control);
-  NodeProperties::ChangeOp(node, common()->Phi(MachineRepresentation::kBit, 2));
-}
-
-
-void SimplifiedLowering::DoObjectIsReceiver(Node* node) {
-  Node* input = NodeProperties::GetValueInput(node, 0);
-  // TODO(bmeurer): Optimize somewhat based on input type.
-  STATIC_ASSERT(LAST_TYPE == LAST_JS_RECEIVER_TYPE);
-  Node* check = IsSmi(input);
-  Node* branch = graph()->NewNode(common()->Branch(), check, graph()->start());
-  Node* if_true = graph()->NewNode(common()->IfTrue(), branch);
-  Node* vtrue = jsgraph()->Int32Constant(0);
-  Node* if_false = graph()->NewNode(common()->IfFalse(), branch);
-  Node* vfalse =
-      graph()->NewNode(machine()->Uint32LessThanOrEqual(),
-                       jsgraph()->Uint32Constant(FIRST_JS_RECEIVER_TYPE),
-                       LoadMapInstanceType(LoadHeapObjectMap(input, if_false)));
-  Node* control = graph()->NewNode(common()->Merge(2), if_true, if_false);
-  node->ReplaceInput(0, vtrue);
-  node->AppendInput(graph()->zone(), vfalse);
-  node->AppendInput(graph()->zone(), control);
-  NodeProperties::ChangeOp(node, common()->Phi(MachineRepresentation::kBit, 2));
-}
-
-
-void SimplifiedLowering::DoObjectIsSmi(Node* node) {
-  node->ReplaceInput(0,
-                     graph()->NewNode(machine()->WordAnd(), node->InputAt(0),
-                                      jsgraph()->IntPtrConstant(kSmiTagMask)));
-  node->AppendInput(graph()->zone(), jsgraph()->IntPtrConstant(kSmiTag));
-  NodeProperties::ChangeOp(node, machine()->WordEqual());
-}
-
-
-Node* SimplifiedLowering::IsSmi(Node* value) {
-  return graph()->NewNode(
-      machine()->WordEqual(),
-      graph()->NewNode(machine()->WordAnd(), value,
-                       jsgraph()->IntPtrConstant(kSmiTagMask)),
-      jsgraph()->IntPtrConstant(kSmiTag));
-}
-
-
-Node* SimplifiedLowering::LoadHeapObjectMap(Node* object, Node* control) {
-  return graph()->NewNode(
-      machine()->Load(MachineType::AnyTagged()), object,
-      jsgraph()->IntPtrConstant(HeapObject::kMapOffset - kHeapObjectTag),
-      graph()->start(), control);
-}
-
-
-Node* SimplifiedLowering::LoadMapInstanceType(Node* map) {
-  return graph()->NewNode(
-      machine()->Load(MachineType::Uint8()), map,
-      jsgraph()->IntPtrConstant(Map::kInstanceTypeOffset - kHeapObjectTag),
-      graph()->start(), graph()->start());
-}
-
-
 Node* SimplifiedLowering::StringComparison(Node* node) {
   Operator::Properties properties = node->op()->properties();
   Callable callable = CodeFactory::StringCompare(isolate());