Revert of [turbofan] Run everything after representation selection concurrently.

src/compiler/change-lowering.h

Index: src/compiler/change-lowering.h
diff --git a/src/compiler/change-lowering.h b/src/compiler/change-lowering.h
index be6e89579542440e8c8c0e5a4c96a495b381e3c9..665bab24d55b5e7a67a03051f67112f293d72924 100644
--- a/src/compiler/change-lowering.h
+++ b/src/compiler/change-lowering.h
@@ -27,24 +27,38 @@
   Reduction Reduce(Node* node) final;
 
  private:
+  Node* HeapNumberValueIndexConstant();
   Node* SmiShiftBitsConstant();
 
+  Node* ChangeInt32ToFloat64(Node* value);
   Node* ChangeInt32ToSmi(Node* value);
+  Node* ChangeSmiToFloat64(Node* value);
   Node* ChangeSmiToWord32(Node* value);
   Node* ChangeUint32ToFloat64(Node* value);
+  Node* ChangeUint32ToSmi(Node* value);
+  Node* LoadHeapNumberValue(Node* value, Node* control);
+  Node* TestNotSmi(Node* value);
 
-  Reduction ReduceChangeBitToBool(Node* value, Node* control);
-  Reduction ReduceChangeBoolToBit(Node* value);
-  Reduction ReduceChangeInt31ToTagged(Node* value, Node* control);
-  Reduction ReduceChangeTaggedSignedToInt32(Node* value);
+  Reduction ChangeBitToBool(Node* value, Node* control);
+  Reduction ChangeBoolToBit(Node* value);
+  Reduction ChangeFloat64ToTagged(Node* value, Node* control);
+  Reduction ChangeInt31ToTagged(Node* value, Node* control);
+  Reduction ChangeInt32ToTagged(Node* value, Node* control);
+  Reduction ChangeTaggedSignedToInt32(Node* value);
+  Reduction ChangeUint32ToTagged(Node* value, Node* control);
 
-  Reduction ReduceLoadField(Node* node);
-  Reduction ReduceStoreField(Node* node);
-  Reduction ReduceLoadElement(Node* node);
-  Reduction ReduceStoreElement(Node* node);
-  Reduction ReduceAllocate(Node* node);
+  Reduction LoadField(Node* node);
+  Reduction StoreField(Node* node);
+  Reduction LoadElement(Node* node);
+  Reduction StoreElement(Node* node);
+  Reduction Allocate(Node* node);
 
-  Reduction ReduceObjectIsSmi(Node* node);
+  Node* IsSmi(Node* value);
+  Node* LoadHeapObjectMap(Node* object, Node* control);
+  Node* LoadMapBitField(Node* map);
+  Node* LoadMapInstanceType(Node* map);
+
+  Reduction ObjectIsSmi(Node* node);
 
   Node* ComputeIndex(const ElementAccess& access, Node* const key);
   Graph* graph() const;