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

src/compiler/change-lowering.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/change-lowering.h"
 
 #include "src/address-map.h"
 #include "src/code-factory.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/linkage.h"
@@ skipping 31 matching lines @@
     case IrOpcode::kLoadField:
       return LoadField(node);
     case IrOpcode::kStoreField:
       return StoreField(node);
     case IrOpcode::kLoadElement:
       return LoadElement(node);
     case IrOpcode::kStoreElement:
       return StoreElement(node);
     case IrOpcode::kAllocate:
       return Allocate(node);
+    case IrOpcode::kObjectIsReceiver:
+      return ObjectIsReceiver(node);
+    case IrOpcode::kObjectIsSmi:
+      return ObjectIsSmi(node);
+    case IrOpcode::kObjectIsNumber:
+      return ObjectIsNumber(node);
     default:
       return NoChange();
   }
   UNREACHABLE();
   return NoChange();
 }
 
 
 Node* ChangeLowering::HeapNumberValueIndexConstant() {
   return jsgraph()->IntPtrConstant(HeapNumber::kValueOffset - kHeapObjectTag);
@@ skipping 513 matching lines @@
     node->InsertInput(graph()->zone(), 0, jsgraph()->CEntryStubConstant(1));
     node->InsertInput(graph()->zone(), 2, jsgraph()->SmiConstant(flags));
     node->InsertInput(graph()->zone(), 3, jsgraph()->ExternalConstant(ref));
     node->InsertInput(graph()->zone(), 4, jsgraph()->Int32Constant(2));
     node->InsertInput(graph()->zone(), 5, jsgraph()->NoContextConstant());
     NodeProperties::ChangeOp(node, common()->Call(desc));
   }
   return Changed(node);
 }
 
+Node* ChangeLowering::IsSmi(Node* value) {
+  return graph()->NewNode(
+      machine()->WordEqual(),
+      graph()->NewNode(machine()->WordAnd(), value,
+                       jsgraph()->IntPtrConstant(kSmiTagMask)),
+      jsgraph()->IntPtrConstant(kSmiTag));
+}
+
+Node* ChangeLowering::LoadHeapObjectMap(Node* object, Node* control) {
+  return graph()->NewNode(
+      machine()->Load(MachineType::AnyTagged()), object,
+      jsgraph()->IntPtrConstant(HeapObject::kMapOffset - kHeapObjectTag),
+      graph()->start(), control);
+}
+
+Node* ChangeLowering::LoadMapInstanceType(Node* map) {
+  return graph()->NewNode(
+      machine()->Load(MachineType::Uint8()), map,
+      jsgraph()->IntPtrConstant(Map::kInstanceTypeOffset - kHeapObjectTag),
+      graph()->start(), graph()->start());
+}
+
+Reduction ChangeLowering::ObjectIsNumber(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));
+  return Changed(node);
+}
+
+Reduction ChangeLowering::ObjectIsReceiver(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));
+  return Changed(node);
+}
+
+Reduction ChangeLowering::ObjectIsSmi(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());
+  return Changed(node);
+}
 
 Isolate* ChangeLowering::isolate() const { return jsgraph()->isolate(); }
 
 
 Graph* ChangeLowering::graph() const { return jsgraph()->graph(); }
 
 
 CommonOperatorBuilder* ChangeLowering::common() const {
   return jsgraph()->common();
 }
 
 
 MachineOperatorBuilder* ChangeLowering::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8