[turbofan] Utilize maps from field type tracking to eliminate map checks.

src/compiler/simplified-operator.cc

Index: src/compiler/simplified-operator.cc
diff --git a/src/compiler/simplified-operator.cc b/src/compiler/simplified-operator.cc
index 9ec389fe078ef9361d9e68eb802f23b24df5ccf0..98e136682c2c78f38f31ad15f99cbfd77999784b 100644
--- a/src/compiler/simplified-operator.cc
+++ b/src/compiler/simplified-operator.cc
@@ -92,6 +92,7 @@ bool operator==(FieldAccess const& lhs, FieldAccess const& rhs) {
   // really only relevant for eliminating loads and they don't care about the
   // write barrier mode.
   return lhs.base_is_tagged == rhs.base_is_tagged && lhs.offset == rhs.offset &&
+         lhs.map.address() == rhs.map.address() &&
          lhs.machine_type == rhs.machine_type;
 }
 
@@ -118,6 +119,10 @@ std::ostream& operator<<(std::ostream& os, FieldAccess const& access) {
     name->Print(os);
     os << ", ";
   }
+  Handle<Map> map;
+  if (access.map.ToHandle(&map)) {
+    os << Brief(*map) << ", ";
+  }
 #endif
   access.type->PrintTo(os);
   os << ", " << access.machine_type << ", " << access.write_barrier_kind << "]";