[turbofan] Separate representation type operations from the semantic types.

test/cctest/types-fuzz.h

Index: test/cctest/types-fuzz.h
diff --git a/test/cctest/types-fuzz.h b/test/cctest/types-fuzz.h
index 425011d4aec94a81cc6d4684de6baeb365c70ca4..1d69c2d75d11e1a5b38f85f085f0149fa7ba1048 100644
--- a/test/cctest/types-fuzz.h
+++ b/test/cctest/types-fuzz.h
@@ -45,6 +45,12 @@ class Types {
     PROPER_BITSET_TYPE_LIST(DECLARE_TYPE)
     #undef DECLARE_TYPE
 
+#define DECLARE_TYPE(name, value)                                \
+  Mask##name##ForTesting = Type::Mask##name##ForTesting(region); \
+  types.push_back(Mask##name##ForTesting);
+    MASK_BITSET_TYPE_LIST(DECLARE_TYPE)
+#undef DECLARE_TYPE
+
     SignedSmall = Type::SignedSmall(region);
     UnsignedSmall = Type::UnsignedSmall(region);
 
@@ -132,6 +138,10 @@ class Types {
   #define DECLARE_TYPE(name, value) TypeHandle name;
   PROPER_BITSET_TYPE_LIST(DECLARE_TYPE)
   #undef DECLARE_TYPE
+
+#define DECLARE_TYPE(name, value) TypeHandle Mask##name##ForTesting;
+  MASK_BITSET_TYPE_LIST(DECLARE_TYPE)
+#undef DECLARE_TYPE
   TypeHandle SignedSmall;
   TypeHandle UnsignedSmall;
 
@@ -212,10 +222,19 @@ class Types {
   TypeHandle Union(TypeHandle t1, TypeHandle t2) {
     return Type::Union(t1, t2, region_);
   }
+
   TypeHandle Intersect(TypeHandle t1, TypeHandle t2) {
     return Type::Intersect(t1, t2, region_);
   }
 
+  TypeHandle ProjectRepresentation(TypeHandle t) {
+    return Intersect(t, MaskRepresentationForTesting);
+  }
+
+  TypeHandle ProjectSemantic(TypeHandle t) {
+    return Intersect(t, MaskSemanticForTesting);
+  }
+
   template<class Type2, class TypeHandle2>
   TypeHandle Convert(TypeHandle2 t) {
     return Type::template Convert<Type2>(t, region_);