[turbofan] Typer changes to avoid Type representation dimension

src/compiler/typer.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/typer.h"
 
 #include <iomanip>
 
 #include "src/base/flags.h"
 #include "src/bootstrapper.h"
@@ skipping 498 matching lines @@
 
 
 Type* Typer::Visitor::ObjectIsReceiver(Type* type, Typer* t) {
   if (type->Is(Type::Receiver())) return t->singleton_true_;
   if (!type->Maybe(Type::Receiver())) return t->singleton_false_;
   return Type::Boolean();
 }
 
 
 Type* Typer::Visitor::ObjectIsSmi(Type* type, Typer* t) {
-  if (type->Is(Type::TaggedSigned())) return t->singleton_true_;
-  if (type->Is(Type::TaggedPointer())) return t->singleton_false_;
+  if (!type->Maybe(Type::SignedSmall())) return t->singleton_false_;
   return Type::Boolean();
 }
 
 Type* Typer::Visitor::ObjectIsString(Type* type, Typer* t) {
   if (type->Is(Type::String())) return t->singleton_true_;
   if (!type->Maybe(Type::String())) return t->singleton_false_;
   return Type::Boolean();
 }
 
 Type* Typer::Visitor::ObjectIsUndetectable(Type* type, Typer* t) {
@@ skipping 1055 matching lines @@
   Type* arg = Operand(node, 0);
   return Type::Intersect(arg, Type::String(), zone());
 }
 
 Type* Typer::Visitor::TypeCheckIf(Node* node) {
   UNREACHABLE();
   return nullptr;
 }
 
 Type* Typer::Visitor::TypeCheckTaggedPointer(Node* node) {
-  Type* arg = Operand(node, 0);
-  return Type::Intersect(arg, Type::TaggedPointer(), zone());
+  Type* type = Operand(node, 0);
+  return type;
 }
 
 Type* Typer::Visitor::TypeCheckTaggedSigned(Node* node) {
   Type* arg = Operand(node, 0);
   return Type::Intersect(arg, typer_->cache_.kSmi, zone());
 }
 
 Type* Typer::Visitor::TypeCheckFloat64Hole(Node* node) {
   Type* type = Operand(node, 0);
   return type;
 }
 
 Type* Typer::Visitor::TypeCheckTaggedHole(Node* node) {
   Type* type = Operand(node, 0);
   type = Type::Intersect(type, Type::NonInternal(), zone());
   return type;
 }
 
 Type* Typer::Visitor::TypeConvertTaggedHoleToUndefined(Node* node) {
   Type* type = Operand(node, 0);
   if (type->Maybe(Type::Hole())) {
     // Turn "the hole" into undefined.
     type = Type::Intersect(type, Type::NonInternal(), zone());
     type = Type::Union(type, Type::Undefined(), zone());
   }
   return type;
 }
 
-Type* Typer::Visitor::TypeAllocate(Node* node) { return Type::TaggedPointer(); }
+Type* Typer::Visitor::TypeAllocate(Node* node) { return Type::Any(); }
 
 Type* Typer::Visitor::TypeLoadField(Node* node) {
   return FieldAccessOf(node->op()).type;
 }
 
 Type* Typer::Visitor::TypeLoadBuffer(Node* node) {
   // TODO(bmeurer): This typing is not yet correct. Since we can still access
   // out of bounds, the type in the general case has to include Undefined.
   switch (BufferAccessOf(node->op()).external_array_type()) {
 #define TYPED_ARRAY_CASE(ElemType, type, TYPE, ctype, size) \
@@ skipping 80 matching lines @@
 Type* Typer::Visitor::TypeConstant(Handle<Object> value) {
   if (Type::IsInteger(*value)) {
     return Type::Range(value->Number(), value->Number(), zone());
   }
   return Type::Constant(value, zone());
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8