bench: replace shootout_binarytrees with bench_bintree_gen
[nit.git] / src / separate_compiler.nit
index c95751f..61e22ec 100644 (file)
@@ -30,7 +30,16 @@ redef class ToolContext
        var opt_inline_coloring_numbers: OptionBool = new OptionBool("Inline colors and ids", "--inline-coloring-numbers")
 
        # --use-naive-coloring
-       var opt_use_naive_coloring: OptionBool = new OptionBool("Colorize items incrementaly, used to simulate binary matrix typing", "--use-naive-coloring")
+       var opt_bm_typing: OptionBool = new OptionBool("Colorize items incrementaly, used to simulate binary matrix typing", "--bm-typing")
+
+       # --use-mod-perfect-hashing
+       var opt_phmod_typing: OptionBool = new OptionBool("Replace coloration by perfect hashing (with mod operator)", "--phmod-typing")
+
+       # --use-and-perfect-hashing
+       var opt_phand_typing: OptionBool = new OptionBool("Replace coloration by perfect hashing (with and operator)", "--phand-typing")
+
+       # --generic-resolution-tree
+       var opt_generic_tree: OptionBool = new OptionBool("Use tree representation for live generic types instead of flattened representation", "--generic-resolution-tree")
 
        redef init
        do
@@ -38,7 +47,10 @@ redef class ToolContext
                self.option_context.add_option(self.opt_separate)
                self.option_context.add_option(self.opt_no_inline_intern)
                self.option_context.add_option(self.opt_inline_coloring_numbers)
-               self.option_context.add_option(self.opt_use_naive_coloring)
+               self.option_context.add_option(self.opt_bm_typing)
+               self.option_context.add_option(self.opt_phmod_typing)
+               self.option_context.add_option(self.opt_phand_typing)
+               self.option_context.add_option(self.opt_generic_tree)
        end
 end
 
@@ -57,6 +69,9 @@ redef class ModelBuilder
                        end
                end
 
+               # The main function of the C
+               compiler.compile_main_function
+
                # compile methods
                for m in mainmodule.in_importation.greaters do
                        compiler.compile_module_to_c(m)
@@ -68,9 +83,11 @@ redef class ModelBuilder
                        compiler.compile_type_to_c(t)
                end
 
-               # compile live generic types selection structures
-               for mclass in model.mclasses do
-                       compiler.compile_live_gentype_to_c(mclass)
+               if self.toolcontext.opt_generic_tree.value then
+                       # compile live generic types selection structures
+                       for mclass in model.mclasses do
+                               compiler.compile_live_gentype_to_c(mclass)
+                       end
                end
 
                write_and_make(compiler)
@@ -82,6 +99,7 @@ class SeparateCompiler
        super GlobalCompiler # TODO better separation of concerns
 
        private var undead_types: Set[MType] = new HashSet[MType]
+       private var partial_types: Set[MType] = new HashSet[MType]
        protected var typeids: HashMap[MType, Int] protected writable = new HashMap[MType, Int]
 
        private var type_colors: Map[MType, Int] = typeids
@@ -90,9 +108,13 @@ class SeparateCompiler
        private var livetypes_colors: nullable Map[MType, Int]
        private var livetypes_tables: nullable Map[MClass, Array[nullable Object]]
        private var livetypes_tables_sizes: nullable Map[MClass, Array[Int]]
+       private var live_unanchored_types: Map[MClassDef, Set[MType]] = new HashMap[MClassDef, HashSet[MType]]
+
+       private var unanchored_types_colors: nullable Map[MClassType, Int]
+       private var unanchored_types_tables: nullable Map[MClassType, Array[nullable MClassType]]
+       private var unanchored_types_masks: nullable Map[MClassType, Int]
 
        protected var class_coloring: ClassColoring
-       protected var class_colors: Map[MClass, Int]
 
        protected var method_colors: Map[MMethod, Int]
        protected var method_tables: Map[MClass, Array[nullable MMethodDef]]
@@ -102,9 +124,11 @@ class SeparateCompiler
 
        protected var vt_colors: Map[MVirtualTypeProp, Int]
        protected var vt_tables: Map[MClass, Array[nullable MVirtualTypeDef]]
+       protected var vt_masks: nullable Map[MClass, Int]
 
-       protected var ft_colors: nullable Map[MParameterType, Int]
-       protected var ft_tables: nullable Map[MClass, Array[nullable MParameterType]]
+       private var ft_colors: nullable Map[MParameterType, Int]
+       private var ft_tables: nullable Map[MClass, Array[nullable MParameterType]]
+       private var ft_masks: nullable Map[MClass, Int]
 
        init(mainmodule: MModule, runtime_type_analysis: RapidTypeAnalysis, mmbuilder: ModelBuilder) do
                self.do_property_coloring
@@ -115,33 +139,25 @@ class SeparateCompiler
                self.header.add_decl("typedef void(*nitmethod_t)(void); /* general C type representing a Nit method. */")
                self.header.add_decl("typedef void* nitattribute_t; /* general C type representing a Nit attribute. */")
                self.header.add_decl("struct class \{ int box_kind; nitmethod_t vft[1]; \}; /* general C type representing a Nit class. */")
-               self.header.add_decl("struct type \{ int id; int color; int livecolor; short int is_nullable; struct vts_table *vts_table; struct fts_table *fts_table; int table_size; int type_table[1]; \}; /* general C type representing a Nit type. */")
-               self.header.add_decl("struct fts_table \{ struct type *fts[1]; \}; /* fts list of a C type representation. */")
-               self.header.add_decl("struct vts_table \{ struct type *vts[1]; \}; /* vts list of a C type representation. */")
-               self.header.add_decl("typedef struct \{ struct type *type; struct class *class; nitattribute_t attrs[1]; \} val; /* general C type representing a Nit instance. */")
-       end
 
-       redef fun compile_class_names do
-               # Build type names table
-               var type_array = new Array[nullable MType]
-               for t, i in typeids do
-                       if i >= type_array.length then
-                               type_array[i] = null
-                       end
-                       type_array[i] = t
+               if modelbuilder.toolcontext.opt_generic_tree.value then
+                       self.header.add_decl("struct type \{ int id; const char *name; int color; short int is_nullable; int livecolor; struct types *vts_table; struct types *fts_table; int table_size; int type_table[1]; \}; /* general C type representing a Nit type. */")
+               else
+                       self.header.add_decl("struct type \{ int id; const char *name; int color; short int is_nullable; struct types *unanchored_table; struct types *vts_table; struct types *fts_table; int table_size; int type_table[1]; \}; /* general C type representing a Nit type. */")
                end
 
-               var v = self.new_visitor
-               self.header.add_decl("extern const char const * class_names[];")
-               v.add("const char const * class_names[] = \{")
-               for t in type_array do
-                       if t == null then
-                               v.add("NULL,")
-                       else
-                               v.add("\"{t}\",")
-                       end
+               if modelbuilder.toolcontext.opt_phmod_typing.value or modelbuilder.toolcontext.opt_phand_typing.value then
+                       self.header.add_decl("struct types \{ int mask; struct type *types[1]; \}; /* a list types (used for vts, fts and unanchored lists). */")
+               else
+                       self.header.add_decl("struct types \{ struct type *types[1]; \}; /* a list types (used for vts, fts and unanchored lists). */")
                end
-               v.add("\};")
+
+
+               self.header.add_decl("typedef struct \{ struct type *type; struct class *class; nitattribute_t attrs[1]; \} val; /* general C type representing a Nit instance. */")
+       end
+
+       redef fun compile_class_names do
+               abort # There is no class name compilation since the name is stored in the type structure
        end
 
        fun compile_box_kinds
@@ -194,12 +210,8 @@ class SeparateCompiler
        fun do_property_coloring do
 
                # classes coloration
-               if modelbuilder.toolcontext.opt_use_naive_coloring.value then
-                       self.class_coloring = new NaiveClassColoring(mainmodule)
-               else
-                       self.class_coloring = new ClassColoring(mainmodule)
-               end
-               self.class_colors = class_coloring.colorize(modelbuilder.model.mclasses)
+               self.class_coloring = new ClassColoring(mainmodule)
+               class_coloring.colorize(modelbuilder.model.mclasses)
 
                # methods coloration
                var method_coloring = new MethodColoring(self.class_coloring)
@@ -208,15 +220,36 @@ class SeparateCompiler
                self.compile_color_consts(self.method_colors)
 
                # attributes coloration
-               var attribute_coloring = new AttributeColoring(class_coloring)
+               var attribute_coloring = new AttributeColoring(self.class_coloring)
                self.attr_colors = attribute_coloring.colorize
                self.attr_tables = attribute_coloring.build_property_tables
                self.compile_color_consts(self.attr_colors)
 
+               if modelbuilder.toolcontext.opt_bm_typing.value then
+                       self.class_coloring = new NaiveClassColoring(mainmodule)
+                       self.class_coloring.colorize(modelbuilder.model.mclasses)
+               end
+
                # vt coloration
-               var vt_coloring = new VTColoring(class_coloring)
-               self.vt_colors = vt_coloring.colorize
-               self.vt_tables = vt_coloring.build_property_tables
+               if modelbuilder.toolcontext.opt_bm_typing.value then
+                       var vt_coloring = new NaiveVTColoring(self.class_coloring)
+                       self.vt_colors = vt_coloring.colorize
+                       self.vt_tables = vt_coloring.build_property_tables
+               else if modelbuilder.toolcontext.opt_phmod_typing.value then
+                       var vt_coloring = new VTModPerfectHashing(self.class_coloring)
+                       self.vt_colors = vt_coloring.colorize
+                       self.vt_masks = vt_coloring.compute_masks
+                       self.vt_tables = vt_coloring.build_property_tables
+               else if modelbuilder.toolcontext.opt_phand_typing.value then
+                       var vt_coloring = new VTAndPerfectHashing(self.class_coloring)
+                       self.vt_colors = vt_coloring.colorize
+                       self.vt_masks = vt_coloring.compute_masks
+                       self.vt_tables = vt_coloring.build_property_tables
+               else
+                       var vt_coloring = new VTColoring(self.class_coloring)
+                       self.vt_colors = vt_coloring.colorize
+                       self.vt_tables = vt_coloring.build_property_tables
+               end
                self.compile_color_consts(self.vt_colors)
        end
 
@@ -227,67 +260,178 @@ class SeparateCompiler
                mtypes.add_all(self.runtime_type_analysis.live_cast_types)
                mtypes.add_all(self.undead_types)
 
-               self.undead_types.clear
                for mtype in mtypes do
-                       # add formal types arguments to mtypes
-                       if mtype isa MGenericType then
-                               for ft in mtype.arguments do
-                                       if ft.need_anchor then
-                                               print("Why do we need anchor here ?")
-                                               abort
-                                       end
-                                       self.undead_types.add(ft)
-                               end
-                       end
-                       var mclass_type: MClassType
-                       if mtype isa MNullableType then
-                               mclass_type = mtype.mtype.as(MClassType)
-                       else
-                               mclass_type = mtype.as(MClassType)
-                       end
-                       # add virtual types to mtypes
-                       for vt in self.vt_tables[mclass_type.mclass] do
-                               if vt != null then
-                                       var anchored = vt.bound.anchor_to(self.mainmodule, mclass_type)
-                                       self.undead_types.add(anchored)
-                               end
-                       end
+                       retieve_live_partial_types(mtype)
                end
-               mtypes.add_all(self.undead_types)
+               mtypes.add_all(self.partial_types)
 
                # set type unique id
-               for mtype in mtypes do
-                       self.typeids[mtype] = self.typeids.length
+               if modelbuilder.toolcontext.opt_phmod_typing.value or modelbuilder.toolcontext.opt_phand_typing.value then
+                       var sorted_mtypes = new OrderedSet[MType].from(mtypes)
+                       sorted_mtypes.linearize(new ReverseTypeSorter(self.mainmodule))
+                       for mtype in sorted_mtypes do
+                               self.typeids[mtype] = self.typeids.length + 1
+                       end
+               else
+                       for mtype in mtypes do
+                               self.typeids[mtype] = self.typeids.length
+                       end
                end
 
                # fts coloration for non-erased compilation
-               var ft_coloring = new FTColoring(class_coloring)
-               self.ft_colors = ft_coloring.colorize
-               self.ft_tables = ft_coloring.build_ft_tables
+               if modelbuilder.toolcontext.opt_bm_typing.value then
+                       var ft_coloring = new NaiveFTColoring(self.class_coloring)
+                       self.ft_colors = ft_coloring.colorize
+                       self.ft_tables = ft_coloring.build_ft_tables
+               else if modelbuilder.toolcontext.opt_phmod_typing.value then
+                       var ft_coloring = new FTModPerfectHashing(self.class_coloring)
+                       self.ft_colors = ft_coloring.colorize
+                       self.ft_masks = ft_coloring.compute_masks
+                       self.ft_tables = ft_coloring.build_ft_tables
+               else if modelbuilder.toolcontext.opt_phand_typing.value then
+                       var ft_coloring = new FTAndPerfectHashing(self.class_coloring)
+                       self.ft_colors = ft_coloring.colorize
+                       self.ft_masks = ft_coloring.compute_masks
+                       self.ft_tables = ft_coloring.build_ft_tables
+               else
+                       var ft_coloring = new FTColoring(self.class_coloring)
+                       self.ft_colors = ft_coloring.colorize
+                       self.ft_tables = ft_coloring.build_ft_tables
+               end
                self.compile_color_consts(self.ft_colors.as(not null))
 
-               # colorize live entries
-               var entries_coloring = new LiveEntryColoring
-               self.livetypes_colors = entries_coloring.colorize(mtypes)
-               self.livetypes_tables = entries_coloring.build_livetype_tables(mtypes)
-               self.livetypes_tables_sizes = entries_coloring.livetypes_tables_sizes
+               if modelbuilder.toolcontext.opt_generic_tree.value then
+                       # colorize live entries
+                       var entries_coloring
+                       if modelbuilder.toolcontext.opt_bm_typing.value then
+                               entries_coloring = new NaiveLiveEntryColoring
+                       else
+                               entries_coloring = new LiveEntryColoring
+                       end
+                       self.livetypes_colors = entries_coloring.colorize(mtypes)
+                       self.livetypes_tables = entries_coloring.build_livetype_tables(mtypes)
+                       self.livetypes_tables_sizes = entries_coloring.livetypes_tables_sizes
+               else
+                       self.compile_unanchored_tables(mtypes)
+               end
 
                # colorize types
-               var type_coloring
-               if modelbuilder.toolcontext.opt_use_naive_coloring.value then
-                       type_coloring = new NaiveTypeColoring(self.mainmodule, mtypes)
+               if modelbuilder.toolcontext.opt_bm_typing.value then
+                       var type_coloring = new NaiveTypeColoring(self.mainmodule, mtypes)
+                       self.type_colors = type_coloring.colorize(mtypes)
+                       self.type_tables = type_coloring.build_type_tables(mtypes, type_colors)
+               else if modelbuilder.toolcontext.opt_phmod_typing.value then
+                       var type_coloring = new TypeModPerfectHashing(self.mainmodule, mtypes)
+                       self.type_colors = type_coloring.compute_masks(mtypes, typeids)
+                       self.type_tables = type_coloring.hash_type_tables(mtypes, typeids, type_colors)
+                       self.header.add_decl("#define HASH(mask, id) ((mask)%(id))")
+               else if modelbuilder.toolcontext.opt_phand_typing.value then
+                       var type_coloring = new TypeAndPerfectHashing(self.mainmodule, mtypes)
+                       self.type_colors = type_coloring.compute_masks(mtypes, typeids)
+                       self.type_tables = type_coloring.hash_type_tables(mtypes, typeids, type_colors)
+                       self.header.add_decl("#define HASH(mask, id) ((mask)&(id))")
                else
-                       type_coloring = new TypeColoring(self.mainmodule, mtypes)
+                       var type_coloring = new TypeColoring(self.mainmodule, mtypes)
+                       self.type_colors = type_coloring.colorize(mtypes)
+                       self.type_tables = type_coloring.build_type_tables(mtypes, type_colors)
                end
-               self.type_colors = type_coloring.colorize(mtypes)
-               self.type_tables = type_coloring.build_type_tables(mtypes, type_colors)
 
-               # for the class_name and output_class_name methods
-               self.compile_class_names
 
                return mtypes
        end
 
+       protected fun compile_unanchored_tables(mtypes: Set[MType]) do
+               var mtype2anchored = new HashMap[MClassType, Set[MClassType]]
+
+               for mtype in self.runtime_type_analysis.live_types do
+                       for cd in mtype.collect_mclassdefs(self.mainmodule) do
+                               if self.live_unanchored_types.has_key(cd) then
+                                       if not mtype2anchored.has_key(mtype) then
+                                               mtype2anchored[mtype] = new HashSet[MClassType]
+                                       end
+                                       for unanchored in self.live_unanchored_types[cd] do
+                                               var anchored = unanchored.anchor_to(self.mainmodule, mtype)
+                                               if anchored isa MClassType then
+                                                       mtype2anchored[mtype].add(anchored)
+                                               else if anchored isa MNullableType then
+                                                       mtype2anchored[mtype].add(anchored.mtype.as(MClassType))
+                                               else
+                                                       print "NOT YET IMPLEMENTED: try compile_unanchored_tables with {unanchored}"
+                                               end
+                                       end
+                               end
+                       end
+               end
+
+               if modelbuilder.toolcontext.opt_bm_typing.value then
+                       var unanchored_type_coloring = new NaiveUnanchoredTypeColoring
+                       self.unanchored_types_colors = unanchored_type_coloring.colorize(mtype2anchored)
+                       self.unanchored_types_tables = unanchored_type_coloring.build_tables(mtype2anchored)
+               else if modelbuilder.toolcontext.opt_phmod_typing.value then
+                       var unanchored_type_coloring = new UnanchoredTypeModPerfectHashing
+                       self.unanchored_types_colors = unanchored_type_coloring.colorize(mtype2anchored)
+                       self.unanchored_types_masks = unanchored_type_coloring.compute_masks(mtype2anchored)
+                       self.unanchored_types_tables = unanchored_type_coloring.build_tables(mtype2anchored)
+               else if modelbuilder.toolcontext.opt_phand_typing.value then
+                       var unanchored_type_coloring = new UnanchoredTypeAndPerfectHashing
+                       self.unanchored_types_colors = unanchored_type_coloring.colorize(mtype2anchored)
+                       self.unanchored_types_masks = unanchored_type_coloring.compute_masks(mtype2anchored)
+                       self.unanchored_types_tables = unanchored_type_coloring.build_tables(mtype2anchored)
+               else
+                       var unanchored_type_coloring = new UnanchoredTypeColoring
+                       self.unanchored_types_colors = unanchored_type_coloring.colorize(mtype2anchored)
+                       self.unanchored_types_tables = unanchored_type_coloring.build_tables(mtype2anchored)
+               end
+
+               var unanchored_mtypes = new HashMap[MType, Int]
+               for mclass in modelbuilder.model.mclasses do
+                       var mtype = mclass.mclass_type
+                       if unanchored_types_colors.has_key(mtype) then
+                               unanchored_mtypes[mtype] = unanchored_types_colors[mtype]
+                       else
+                               unanchored_mtypes[mtype] = -1
+                       end
+               end
+               for mtype, color in unanchored_types_colors.as(not null) do
+                       unanchored_mtypes[mtype] = color
+               end
+               self.compile_color_consts(unanchored_mtypes)
+
+               #print "tables"
+               #for k, v in unanchored_types_tables.as(not null) do
+               #       print "{k}: {v.join(", ")}"
+               #end
+               #print ""
+       end
+
+       fun retieve_live_partial_types(mtype: MType) do
+               # add formal types arguments to mtypes
+               if mtype isa MGenericType then
+                       for ft in mtype.arguments do
+                               if ft.need_anchor then
+                                       print("Why do we need anchor here ?")
+                                       abort
+                               end
+                               self.partial_types.add(ft)
+                               retieve_live_partial_types(ft)
+                       end
+               end
+               var mclass_type: MClassType
+               if mtype isa MNullableType then
+                       mclass_type = mtype.mtype.as(MClassType)
+               else
+                       mclass_type = mtype.as(MClassType)
+               end
+
+               # add virtual types to mtypes
+               for vt in self.vt_tables[mclass_type.mclass] do
+                       if vt != null then
+                               var anchored = vt.bound.anchor_to(self.mainmodule, mclass_type)
+                               self.partial_types.add(anchored)
+                       end
+               end
+       end
+
        # declare live generic types tables selection
        private fun compile_live_gentype_to_c(mclass: MClass) do
                if mclass.arity > 0 then
@@ -331,6 +475,8 @@ class SeparateCompiler
        # Separately compile all the method definitions of the module
        fun compile_module_to_c(mmodule: MModule)
        do
+               var old_module = self.mainmodule
+               self.mainmodule = mmodule
                for cd in mmodule.mclassdefs do
                        for pd in cd.mpropdefs do
                                if not pd isa MMethodDef then continue
@@ -343,6 +489,7 @@ class SeparateCompiler
                                end
                        end
                end
+               self.mainmodule = old_module
        end
 
        # Globaly compile the type structure of a live type
@@ -356,9 +503,14 @@ class SeparateCompiler
                self.header.add_decl("extern const struct type_{c_name} type_{c_name};")
                self.header.add_decl("struct type_{c_name} \{")
                self.header.add_decl("int id;")
+               self.header.add_decl("const char *name;")
                self.header.add_decl("int color;")
-               self.header.add_decl("int livecolor;")
                self.header.add_decl("short int is_nullable;")
+               if modelbuilder.toolcontext.opt_generic_tree.value then
+                       self.header.add_decl("int livecolor;")
+               else
+                       self.header.add_decl("const struct unanchored_table_{c_name} *types;")
+               end
                self.header.add_decl("const struct vts_table_{c_name} *vts_table;")
                self.header.add_decl("const struct fts_table_{c_name} *fts_table;")
                self.header.add_decl("int table_size;")
@@ -368,15 +520,32 @@ class SeparateCompiler
                # const struct type_X
                v.add_decl("const struct type_{c_name} type_{c_name} = \{")
                v.add_decl("{self.typeids[mtype]},")
+               v.add_decl("\"{mtype}\", /* class_name_string */")
                v.add_decl("{self.type_colors[mtype]},")
-               v.add_decl("{self.livetypes_colors[mtype]},")
                if mtype isa MNullableType then
                        v.add_decl("1,")
                else
                        v.add_decl("0,")
                end
-               v.add_decl("&vts_table_{c_name},")
-               v.add_decl("&fts_table_{c_name},")
+               if modelbuilder.toolcontext.opt_generic_tree.value then
+                       v.add_decl("{self.livetypes_colors[mtype]},")
+               else
+                       if compile_type_unanchored_table(mtype) then
+                               v.add_decl("&unanchored_table_{c_name},")
+                       else
+                               v.add_decl("NULL,")
+                       end
+               end
+               if compile_type_vts_table(mtype) then
+                       v.add_decl("&vts_table_{c_name},")
+               else
+                       v.add_decl("NULL,")
+               end
+               if compile_type_fts_table(mtype) then
+                       v.add_decl("&fts_table_{c_name},")
+               else
+                       v.add_decl("NULL,")
+               end
                v.add_decl("{self.type_tables[mtype].length},")
                v.add_decl("\{")
                for stype in self.type_tables[mtype] do
@@ -388,12 +557,9 @@ class SeparateCompiler
                end
                v.add_decl("\},")
                v.add_decl("\};")
-
-               compile_type_fts_table(mtype)
-               compile_type_vts_table(mtype)
        end
 
-       protected fun compile_type_fts_table(mtype: MType) do
+       protected fun compile_type_fts_table(mtype: MType): Bool do
 
                var mclass_type: MClassType
                if mtype isa MNullableType then
@@ -401,16 +567,23 @@ class SeparateCompiler
                else
                        mclass_type = mtype.as(MClassType)
                end
+               if self.ft_tables[mclass_type.mclass].is_empty then return false
 
                # extern const struct fst_table_X fst_table_X
                self.header.add_decl("extern const struct fts_table_{mtype.c_name} fts_table_{mtype.c_name};")
                self.header.add_decl("struct fts_table_{mtype.c_name} \{")
+               if modelbuilder.toolcontext.opt_phmod_typing.value or modelbuilder.toolcontext.opt_phand_typing.value then
+                       self.header.add_decl("int mask;")
+               end
                self.header.add_decl("struct type *fts[{self.ft_tables[mclass_type.mclass].length}];")
                self.header.add_decl("\};")
 
                # const struct fts_table_X fts_table_X
                var v = new_visitor
                v.add_decl("const struct fts_table_{mtype.c_name} fts_table_{mtype.c_name} = \{")
+               if modelbuilder.toolcontext.opt_phmod_typing.value or modelbuilder.toolcontext.opt_phand_typing.value then
+                       v.add_decl("{self.ft_masks[mclass_type.mclass]},")
+               end
                v.add_decl("\{")
                for ft in self.ft_tables[mclass_type.mclass] do
                        if ft == null then
@@ -431,9 +604,10 @@ class SeparateCompiler
                end
                v.add_decl("\},")
                v.add_decl("\};")
+               return true
        end
 
-       protected fun compile_type_vts_table(mtype: MType) do
+       protected fun compile_type_vts_table(mtype: MType): Bool do
 
                var mclass_type: MClassType
                if mtype isa MNullableType then
@@ -441,16 +615,23 @@ class SeparateCompiler
                else
                        mclass_type = mtype.as(MClassType)
                end
+               if self.vt_tables[mclass_type.mclass].is_empty then return false
 
                # extern const struct vts_table_X vts_table_X
                self.header.add_decl("extern const struct vts_table_{mtype.c_name} vts_table_{mtype.c_name};")
                self.header.add_decl("struct vts_table_{mtype.c_name} \{")
+               if modelbuilder.toolcontext.opt_phmod_typing.value or modelbuilder.toolcontext.opt_phand_typing.value then
+                       self.header.add_decl("int mask;")
+               end
                self.header.add_decl("struct type *vts[{self.vt_tables[mclass_type.mclass].length}];")
                self.header.add_decl("\};")
 
                # const struct vts_table_X vts_table_X
                var v = new_visitor
                v.add_decl("const struct vts_table_{mtype.c_name} vts_table_{mtype.c_name} = \{")
+               if modelbuilder.toolcontext.opt_phmod_typing.value or modelbuilder.toolcontext.opt_phand_typing.value then
+                       v.add_decl("{vt_masks[mclass_type.mclass]},")
+               end
                v.add_decl("\{")
 
                for vt in self.vt_tables[mclass_type.mclass] do
@@ -490,6 +671,50 @@ class SeparateCompiler
                end
                v.add_decl("\},")
                v.add_decl("\};")
+               return true
+       end
+
+       fun compile_type_unanchored_table(mtype: MType): Bool do
+
+               var mclass_type: MClassType
+               if mtype isa MNullableType then
+                       mclass_type = mtype.mtype.as(MClassType)
+               else
+                       mclass_type = mtype.as(MClassType)
+               end
+               if not self.unanchored_types_tables.has_key(mclass_type) then return false
+
+               # extern const struct unanchored_table_X unanchored_table_X
+               self.header.add_decl("extern const struct unanchored_table_{mtype.c_name} unanchored_table_{mtype.c_name};")
+
+               self.header.add_decl("struct unanchored_table_{mtype.c_name} \{")
+               if modelbuilder.toolcontext.opt_phmod_typing.value or modelbuilder.toolcontext.opt_phand_typing.value then
+                       self.header.add_decl("int mask;")
+               end
+               self.header.add_decl("struct type *types[{self.unanchored_types_tables[mclass_type].length}];")
+               self.header.add_decl("\};")
+
+               # const struct fts_table_X fts_table_X
+               var v = new_visitor
+               v.add_decl("const struct unanchored_table_{mtype.c_name} unanchored_table_{mtype.c_name} = \{")
+               if modelbuilder.toolcontext.opt_phmod_typing.value or modelbuilder.toolcontext.opt_phand_typing.value then
+                       v.add_decl("{self.unanchored_types_masks[mclass_type]},")
+               end
+               v.add_decl("\{")
+               for t in self.unanchored_types_tables[mclass_type] do
+                       if t == null then
+                               v.add_decl("NULL, /* empty */")
+                       else
+                               if self.typeids.has_key(t) then
+                                       v.add_decl("(struct type*)&type_{t.c_name}, /* {t} */")
+                               else
+                                       v.add_decl("NULL, /* empty ({t} not a live type) */")
+                               end
+                       end
+               end
+               v.add_decl("\},")
+               v.add_decl("\};")
+               return true
        end
 
        # Globally compile the table of the class mclass
@@ -1032,9 +1257,17 @@ class SeparateCompilerVisitor
                        end
 
                        if ntype isa MParameterType then
-                               buffer.append("[self->type->fts_table->fts[{ntype.const_color}]->livecolor]")
+                               if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then
+                                       buffer.append("[self->type->fts_table->types[HASH(self->type->fts_table->mask, {ntype.const_color})]->livecolor]")
+                               else
+                                       buffer.append("[self->type->fts_table->types[{ntype.const_color}]->livecolor]")
+                               end
                        else if ntype isa MVirtualType then
-                               buffer.append("[self->type->vts_table->vts[{ntype.mproperty.const_color}]->livecolor]")
+                               if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then
+                                       buffer.append("[self->type->vts_table->types[HASH(self->type->vts_table->mask, {ntype.mproperty.const_color})]->livecolor]")
+                               else
+                                       buffer.append("[self->type->vts_table->types[{ntype.mproperty.const_color}]->livecolor]")
+                               end
                        else if ntype isa MGenericType and ntype.need_anchor then
                                var bbuff = new Buffer
                                retrieve_anchored_livetype(ntype, bbuff)
@@ -1052,10 +1285,21 @@ class SeparateCompilerVisitor
        do
                var compiler = self.compiler.as(SeparateCompiler)
                if mtype isa MGenericType and mtype.need_anchor then
-                       var buff = new Buffer
-                       retrieve_anchored_livetype(mtype, buff)
-                       mtype = self.anchor(mtype).as(MClassType)
-                       return self.new_expr("NEW_{mtype.mclass.c_name}((struct type *) livetypes_{mtype.mclass.c_name}{buff.to_s})", mtype)
+                       if compiler.modelbuilder.toolcontext.opt_generic_tree.value then
+                               var buff = new Buffer
+                               retrieve_anchored_livetype(mtype, buff)
+                               mtype = self.anchor(mtype).as(MClassType)
+                               return self.new_expr("NEW_{mtype.mclass.c_name}((struct type *) livetypes_{mtype.mclass.c_name}{buff.to_s})", mtype)
+                       else
+                               link_unanchored_type(self.frame.mpropdef.mclassdef, mtype)
+                               var recv = self.frame.arguments.first
+                               var recv_boxed = self.autobox(recv, self.object_type)
+                               if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then
+                                       return self.new_expr("NEW_{mtype.mclass.c_name}((struct type *) {recv_boxed}->type->unanchored_table->types[HASH({recv_boxed}->type->unanchored_table->mask, {mtype.mclass.mclass_type.const_color})])", mtype)
+                               else
+                                       return self.new_expr("NEW_{mtype.mclass.c_name}((struct type *) {recv_boxed}->type->unanchored_table->types[{mtype.mclass.mclass_type.const_color}])", mtype)
+                               end
+                       end
                end
                compiler.undead_types.add(mtype)
                return self.new_expr("NEW_{mtype.mclass.c_name}((struct type *) &type_{mtype.c_name})", mtype)
@@ -1070,6 +1314,7 @@ class SeparateCompilerVisitor
 
        redef fun type_test(value, mtype)
        do
+               self.add("/* {value.inspect} isa {mtype} */")
                var compiler = self.compiler.as(SeparateCompiler)
 
                var recv = self.frame.arguments.first
@@ -1077,31 +1322,53 @@ class SeparateCompilerVisitor
 
                var res = self.new_var(bool_type)
 
+               var type_struct = self.get_name("type_struct")
+               self.add_decl("struct type* {type_struct};")
                var cltype = self.get_name("cltype")
                self.add_decl("int {cltype};")
                var idtype = self.get_name("idtype")
                self.add_decl("int {idtype};")
-
                var is_nullable = self.get_name("is_nullable")
                self.add_decl("short int {is_nullable};")
 
                var boxed = self.autobox(value, self.object_type)
 
+               if not compiler.modelbuilder.toolcontext.opt_generic_tree.value and mtype.need_anchor then
+                       link_unanchored_type(self.frame.mpropdef.mclassdef, mtype)
+               end
+
                var ntype = mtype
                if ntype isa MNullableType then
                        ntype = ntype.mtype
                end
 
                if ntype isa MParameterType then
-                       self.add("{cltype} = {recv_boxed}->type->fts_table->fts[{ntype.const_color}]->color;")
-                       self.add("{idtype} = {recv_boxed}->type->fts_table->fts[{ntype.const_color}]->id;")
-                       self.add("{is_nullable} = {recv_boxed}->type->fts_table->fts[{ntype.const_color}]->is_nullable;")
+                       if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then
+                               self.add("{type_struct} = {recv_boxed}->type->fts_table->types[HASH({recv_boxed}->type->fts_table->mask, {ntype.const_color})];")
+                       else
+                               self.add("{type_struct} = {recv_boxed}->type->fts_table->types[{ntype.const_color}];")
+                       end
+                       self.add("{cltype} = {type_struct}->color;")
+                       self.add("{idtype} = {type_struct}->id;")
+                       self.add("{is_nullable} = {type_struct}->is_nullable;")
                else if ntype isa MGenericType and ntype.need_anchor then
-                       var buff = new Buffer
-                       retrieve_anchored_livetype(ntype, buff)
-                       self.add("{cltype} = livetypes_{ntype.mclass.c_name}{buff.to_s}->color;")
-                       self.add("{idtype} = livetypes_{ntype.mclass.c_name}{buff.to_s}->id;")
-                       self.add("{is_nullable} = livetypes_{ntype.mclass.c_name}{buff.to_s}->is_nullable;")
+                       if compiler.modelbuilder.toolcontext.opt_generic_tree.value then
+                               var buff = new Buffer
+                               retrieve_anchored_livetype(ntype, buff)
+                               self.add("{type_struct} = (struct type*)livetypes_{ntype.mclass.c_name}{buff.to_s};")
+                               self.add("{cltype} = {type_struct}->color;")
+                               self.add("{idtype} = {type_struct}->id;")
+                               self.add("{is_nullable} = {type_struct}->is_nullable;")
+                       else
+                               if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then
+                                       self.add("{type_struct} = {recv_boxed}->type->unanchored_table->types[HASH({recv_boxed}->type->unanchored_table->mask, {ntype.mclass.mclass_type.const_color})];")
+                               else
+                                       self.add("{type_struct} = {recv_boxed}->type->unanchored_table->types[{ntype.mclass.mclass_type.const_color}];")
+                               end
+                               self.add("{cltype} = {type_struct}->color;")
+                               self.add("{idtype} = {type_struct}->id;")
+                               self.add("{is_nullable} = {type_struct}->is_nullable;")
+                       end
                else if ntype isa MClassType then
                        compiler.undead_types.add(mtype)
                        self.add("{cltype} = type_{mtype.c_name}.color;")
@@ -1109,9 +1376,14 @@ class SeparateCompilerVisitor
                        self.add("{is_nullable} = type_{mtype.c_name}.is_nullable;")
                else if ntype isa MVirtualType then
                        var vtcolor = ntype.mproperty.const_color
-                       self.add("{cltype} = {recv_boxed}->type->vts_table->vts[{vtcolor}]->color;")
-                       self.add("{idtype} = {recv_boxed}->type->vts_table->vts[{vtcolor}]->id;")
-                       self.add("{is_nullable} = {recv_boxed}->type->vts_table->vts[{vtcolor}]->is_nullable;")
+                       if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then
+                               self.add("{type_struct} = {recv_boxed}->type->vts_table->types[HASH({recv_boxed}->type->vts_table->mask, {vtcolor})];")
+                       else
+                               self.add("{type_struct} = {recv_boxed}->type->vts_table->types[{vtcolor}];")
+                       end
+                       self.add("{cltype} = {type_struct}->color;")
+                       self.add("{idtype} = {type_struct}->id;")
+                       self.add("{is_nullable} = {type_struct}->is_nullable;")
                else
                        self.add("printf(\"NOT YET IMPLEMENTED: type_test(%s, {mtype}).\\n\", \"{boxed.inspect}\"); exit(1);")
                end
@@ -1124,6 +1396,9 @@ class SeparateCompilerVisitor
                self.add("if({boxed} == NULL) \{")
                self.add("{res} = {is_nullable};")
                self.add("\} else \{")
+               if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then
+                       self.add("{cltype} = HASH({boxed}->type->color, {idtype});")
+               end
                self.add("if({cltype} >= {boxed}->type->table_size) \{")
                self.add("{res} = 0;")
                self.add("\} else \{")
@@ -1161,8 +1436,12 @@ class SeparateCompilerVisitor
        redef fun class_name_string(value)
        do
                var res = self.get_name("var_class_name")
-               self.add_decl("const char *{res};")
-               self.add("{res} = class_names[{value}->type->id];")
+               self.add_decl("const char* {res};")
+               if value.mtype.ctype == "val*" then
+                       self.add "{res} = {value} == NULL ? \"null\" : {value}->type->name;"
+               else
+                       self.add "{res} = type_{value.mtype.c_name}.name;"
+               end
                return res
        end
 
@@ -1272,27 +1551,49 @@ class SeparateCompilerVisitor
 
        redef fun array_instance(array, elttype)
        do
-               var compiler = self.compiler.as(SeparateCompiler)
                var nclass = self.get_class("NativeArray")
-               elttype = self.anchor(elttype)
-               var arraytype = self.get_class("Array").get_mtype([elttype])
+               var arrayclass = self.get_class("Array")
+               var arraytype = arrayclass.get_mtype([elttype])
                var res = self.init_instance(arraytype)
                self.add("\{ /* {res} = array_instance Array[{elttype}] */")
-               var nat = self.new_var(self.get_class("NativeArray").get_mtype([elttype]))
-               nat.is_exact = true
-               compiler.undead_types.add(nat.mtype.as(MClassType))
-               self.add("{nat} = NEW_{nclass.c_name}({array.length}, (struct type *) &type_{nat.mtype.c_name});")
+               var length = self.int_instance(array.length)
+               var nat = native_array_instance(elttype, length)
                for i in [0..array.length[ do
                        var r = self.autobox(array[i], self.object_type)
                        self.add("((struct instance_{nclass.c_name}*){nat})->values[{i}] = (val*) {r};")
                end
-               var length = self.int_instance(array.length)
-               self.send(self.get_property("with_native", arraytype), [res, nat, length])
+               self.send(self.get_property("with_native", arrayclass.intro.bound_mtype), [res, nat, length])
                self.check_init_instance(res, arraytype)
                self.add("\}")
                return res
        end
 
+       fun native_array_instance(elttype: MType, length: RuntimeVariable): RuntimeVariable
+       do
+               var mtype = self.get_class("NativeArray").get_mtype([elttype])
+               assert mtype isa MGenericType
+               var compiler = self.compiler.as(SeparateCompiler)
+               if mtype.need_anchor then
+                       if compiler.modelbuilder.toolcontext.opt_generic_tree.value then
+                               var buff = new Buffer
+                               retrieve_anchored_livetype(mtype, buff)
+                               mtype = self.anchor(mtype).as(MClassType)
+                               return self.new_expr("NEW_{mtype.mclass.c_name}({length}, (struct type *) livetypes_{mtype.mclass.c_name}{buff.to_s})", mtype)
+                       else
+                               link_unanchored_type(self.frame.mpropdef.mclassdef, mtype)
+                               var recv = self.frame.arguments.first
+                               var recv_boxed = self.autobox(recv, self.object_type)
+                               if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then
+                                       return self.new_expr("NEW_{mtype.mclass.c_name}({length}, (struct type *) {recv_boxed}->type->unanchored_table->types[HASH({recv_boxed}->type->unanchored_table->mask, {mtype.mclass.mclass_type.const_color})])", mtype)
+                               else
+                                       return self.new_expr("NEW_{mtype.mclass.c_name}({length}, (struct type *) {recv_boxed}->type->unanchored_table->types[{mtype.mclass.mclass_type.const_color}])", mtype)
+                               end
+                       end
+               end
+               compiler.undead_types.add(mtype)
+               return self.new_expr("NEW_{mtype.mclass.c_name}({length}, (struct type *) &type_{mtype.c_name})", mtype)
+       end
+
        redef fun native_array_def(pname, ret_type, arguments)
        do
                var elttype = arguments.first.mtype
@@ -1317,8 +1618,31 @@ class SeparateCompilerVisitor
                var compiler = self.compiler.as(SeparateCompiler)
                compiler.undead_types.add(ret)
                var mclass = self.get_class("ArrayCapable")
-               var ft = mclass.mclass_type.arguments.first.as(MParameterType)
-               self.ret(self.new_expr("NEW_{ret.mclass.c_name}({arguments[1]}, (struct type*) livetypes_array__NativeArray[self->type->fts_table->fts[{ft.const_color}]->livecolor])", ret_type))
+               var nclass = self.get_class("NativeArray")
+
+               if compiler.modelbuilder.toolcontext.opt_generic_tree.value then
+                       var ft = mclass.mclass_type.arguments.first.as(MParameterType)
+                       self.ret(self.new_expr("NEW_{nclass.c_name}({arguments[1]}, (struct type*) livetypes_array__NativeArray[self->type->fts_table->types[{ft.const_color}]->livecolor])", ret_type))
+               else
+                       var res = nclass.get_mtype(mclass.mclass_type.arguments)
+                       link_unanchored_type(self.frame.mpropdef.mclassdef, res)
+                       var recv = self.frame.arguments.first
+                       var recv_boxed = self.autobox(recv, self.object_type)
+                       if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then
+                               self.ret(self.new_expr("NEW_{nclass.c_name}({arguments[1]}, (struct type *) {recv_boxed}->type->unanchored_table->types[HASH({recv_boxed}->type->unanchored_table->mask, {nclass.mclass_type.const_color})])", ret_type))
+                       else
+                               self.ret(self.new_expr("NEW_{nclass.c_name}({arguments[1]}, (struct type *) {recv_boxed}->type->unanchored_table->types[{nclass.mclass_type.const_color}])", ret_type))
+                       end
+               end
+       end
+
+       fun link_unanchored_type(mclassdef: MClassDef, mtype: MType) do
+               assert mtype.need_anchor
+               var compiler = self.compiler.as(SeparateCompiler)
+               if not compiler.live_unanchored_types.has_key(self.frame.mpropdef.mclassdef) then
+                       compiler.live_unanchored_types[self.frame.mpropdef.mclassdef] = new HashSet[MType]
+               end
+               compiler.live_unanchored_types[self.frame.mpropdef.mclassdef].add(mtype)
        end
 end