X-Git-Url: http://nitlanguage.org diff --git a/src/separate_compiler.nit b/src/separate_compiler.nit index b8ccbb1..aab5468 100644 --- a/src/separate_compiler.nit +++ b/src/separate_compiler.nit @@ -16,7 +16,7 @@ module separate_compiler import abstract_compiler -import layout_builders +import coloring import rapid_type_analysis # Add separate compiler specific options @@ -30,13 +30,17 @@ redef class ToolContext # --no-shortcut-equate var opt_no_shortcut_equate: OptionBool = new OptionBool("Always call == in a polymorphic way", "--no-shortcut-equal") # --inline-coloring-numbers - var opt_inline_coloring_numbers: OptionBool = new OptionBool("Inline colors and ids", "--inline-coloring-numbers") - # --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") + var opt_inline_coloring_numbers: OptionBool = new OptionBool("Inline colors and ids (semi-global)", "--inline-coloring-numbers") + # --inline-some-methods + var opt_inline_some_methods: OptionBool = new OptionBool("Allow the separate compiler to inline some methods (semi-global)", "--inline-some-methods") + # --direct-call-monomorph + var opt_direct_call_monomorph: OptionBool = new OptionBool("Allow the separate compiler to direct call monomorph sites (semi-global)", "--direct-call-monomorph") + # --skip-dead-methods + var opt_skip_dead_methods = new OptionBool("Do not compile dead methods (semi-global)", "--skip-dead-methods") + # --semi-global + var opt_semi_global = new OptionBool("Enable all semi-global optimizations", "--semi-global") + # --no-colo-dead-methods + var opt_colo_dead_methods = new OptionBool("Force colorization of dead methods", "--colo-dead-methods") # --tables-metrics var opt_tables_metrics: OptionBool = new OptionBool("Enable static size measuring of tables used for vft, typing and resolution", "--tables-metrics") @@ -47,97 +51,135 @@ redef class ToolContext self.option_context.add_option(self.opt_no_inline_intern) self.option_context.add_option(self.opt_no_union_attribute) self.option_context.add_option(self.opt_no_shortcut_equate) - self.option_context.add_option(self.opt_inline_coloring_numbers) - 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_inline_coloring_numbers, opt_inline_some_methods, opt_direct_call_monomorph, opt_skip_dead_methods, opt_semi_global) + self.option_context.add_option(self.opt_colo_dead_methods) self.option_context.add_option(self.opt_tables_metrics) end + + redef fun process_options(args) + do + super + + var tc = self + if tc.opt_semi_global.value then + tc.opt_inline_coloring_numbers.value = true + tc.opt_inline_some_methods.value = true + tc.opt_direct_call_monomorph.value = true + tc.opt_skip_dead_methods.value = true + end + end + + var separate_compiler_phase = new SeparateCompilerPhase(self, null) +end + +class SeparateCompilerPhase + super Phase + redef fun process_mainmodule(mainmodule, given_mmodules) do + if not toolcontext.opt_separate.value then return + + var modelbuilder = toolcontext.modelbuilder + var analysis = modelbuilder.do_rapid_type_analysis(mainmodule) + modelbuilder.run_separate_compiler(mainmodule, analysis) + end end redef class ModelBuilder - fun run_separate_compiler(mainmodule: MModule, runtime_type_analysis: RapidTypeAnalysis) + fun run_separate_compiler(mainmodule: MModule, runtime_type_analysis: nullable RapidTypeAnalysis) do var time0 = get_time - self.toolcontext.info("*** COMPILING TO C ***", 1) + self.toolcontext.info("*** GENERATING C ***", 1) var compiler = new SeparateCompiler(mainmodule, self, runtime_type_analysis) compiler.compile_header # compile class structures + self.toolcontext.info("Property coloring", 2) + compiler.new_file("{mainmodule.name}.classes") + compiler.do_property_coloring for m in mainmodule.in_importation.greaters do for mclass in m.intro_mclasses do + if mclass.kind == abstract_kind or mclass.kind == interface_kind then continue compiler.compile_class_to_c(mclass) end end # The main function of the C - compiler.new_file + compiler.new_file("{mainmodule.name}.main") + compiler.compile_nitni_global_ref_functions compiler.compile_main_function + compiler.compile_finalizer_function # compile methods for m in mainmodule.in_importation.greaters do - compiler.new_file + self.toolcontext.info("Generate C for module {m}", 2) + compiler.new_file("{m.name}.sep") compiler.compile_module_to_c(m) end # compile live & cast type structures - compiler.new_file + self.toolcontext.info("Type coloring", 2) + compiler.new_file("{mainmodule.name}.types") var mtypes = compiler.do_type_coloring for t in mtypes do compiler.compile_type_to_c(t) end + # compile remaining types structures (useless but needed for the symbol resolution at link-time) + for t in compiler.undead_types do + if mtypes.has(t) then continue + compiler.compile_type_to_c(t) + end compiler.display_stats + var time1 = get_time + self.toolcontext.info("*** END GENERATING C: {time1-time0} ***", 2) write_and_make(compiler) end + + # Count number of invocations by VFT + private var nb_invok_by_tables = 0 + # Count number of invocations by direct call + private var nb_invok_by_direct = 0 + # Count number of invocations by inlining + private var nb_invok_by_inline = 0 end # Singleton that store the knowledge about the separate compilation process class SeparateCompiler super AbstractCompiler + redef type VISITOR: SeparateCompilerVisitor + # The result of the RTA (used to know live types and methods) - var runtime_type_analysis: RapidTypeAnalysis + var runtime_type_analysis: nullable RapidTypeAnalysis private var undead_types: Set[MType] = new HashSet[MType] - private var partial_types: Set[MType] = new HashSet[MType] private var live_unresolved_types: Map[MClassDef, Set[MType]] = new HashMap[MClassDef, HashSet[MType]] - private var type_layout: nullable Layout[MType] - private var resolution_layout: nullable Layout[MType] - protected var method_layout: nullable Layout[MMethod] - protected var attr_layout: nullable Layout[MAttribute] + private var type_ids: Map[MType, Int] + private var type_colors: Map[MType, Int] + private var opentype_colors: Map[MType, Int] + protected var method_colors: Map[PropertyLayoutElement, Int] + protected var attr_colors: Map[MAttribute, Int] - init(mainmodule: MModule, mmbuilder: ModelBuilder, runtime_type_analysis: RapidTypeAnalysis) do + init(mainmodule: MModule, mmbuilder: ModelBuilder, runtime_type_analysis: nullable RapidTypeAnalysis) do super(mainmodule, mmbuilder) + var file = new_file("nit.common") + self.header = new CodeWriter(file) self.runtime_type_analysis = runtime_type_analysis - self.do_property_coloring self.compile_box_kinds end redef fun compile_header_structs do self.header.add_decl("typedef void(*nitmethod_t)(void); /* general C type representing a Nit method. */") self.compile_header_attribute_structs - 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 class \{ int box_kind; nitmethod_t vft[]; \}; /* general C type representing a Nit class. */") # With resolution_table_table, all live type resolution are stored in a big table: resolution_table - self.header.add_decl("struct type \{ int id; const char *name; int color; short int is_nullable; struct types *resolution_table; int table_size; int type_table[1]; \}; /* general C type representing a Nit type. */") - - 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 unresolved lists). */") - else - self.header.add_decl("struct types \{ struct type *types[1]; \}; /* a list types (used for vts, fts and unresolved lists). */") - end - - if modelbuilder.toolcontext.opt_phmod_typing.value then - self.header.add_decl("#define HASH(mask, id) ((mask)%(id))") - else if modelbuilder.toolcontext.opt_phand_typing.value then - self.header.add_decl("#define HASH(mask, id) ((mask)&(id))") - end - - self.header.add_decl("typedef struct \{ struct type *type; struct class *class; nitattribute_t attrs[1]; \} val; /* general C type representing a Nit instance. */") + self.header.add_decl("struct type \{ int id; const char *name; int color; short int is_nullable; const struct types *resolution_table; int table_size; int type_table[]; \}; /* general C type representing a Nit type. */") + self.header.add_decl("struct instance \{ const struct type *type; const struct class *class; nitattribute_t attrs[]; \}; /* general C type representing a Nit instance. */") + self.header.add_decl("struct types \{ int dummy; const struct type *types[]; \}; /* a list types (used for vts, fts and unresolved lists). */") + self.header.add_decl("typedef struct instance val; /* general C type representing a Nit instance. */") end fun compile_header_attribute_structs @@ -182,198 +224,234 @@ class SeparateCompiler end fun compile_color_consts(colors: Map[Object, Int]) do + var v = new_visitor for m, c in colors do - if color_consts_done.has(m) then continue - if m isa MProperty then - if modelbuilder.toolcontext.opt_inline_coloring_numbers.value then - self.header.add_decl("#define {m.const_color} {c}") - else - self.header.add_decl("extern const int {m.const_color};") - self.header.add("const int {m.const_color} = {c};") - end - else if m isa MType then - if modelbuilder.toolcontext.opt_inline_coloring_numbers.value then - self.header.add_decl("#define {m.const_color} {c}") - else - self.header.add_decl("extern const int {m.const_color};") - self.header.add("const int {m.const_color} = {c};") - end + compile_color_const(v, m, c) + end + end + + fun compile_color_const(v: SeparateCompilerVisitor, m: Object, color: Int) do + if color_consts_done.has(m) then return + if m isa MProperty then + if modelbuilder.toolcontext.opt_inline_coloring_numbers.value then + self.provide_declaration(m.const_color, "#define {m.const_color} {color}") + else + self.provide_declaration(m.const_color, "extern const int {m.const_color};") + v.add("const int {m.const_color} = {color};") + end + else if m isa MPropDef then + if modelbuilder.toolcontext.opt_inline_coloring_numbers.value then + self.provide_declaration(m.const_color, "#define {m.const_color} {color}") + else + self.provide_declaration(m.const_color, "extern const int {m.const_color};") + v.add("const int {m.const_color} = {color};") + end + else if m isa MType then + if modelbuilder.toolcontext.opt_inline_coloring_numbers.value then + self.provide_declaration(m.const_color, "#define {m.const_color} {color}") + else + self.provide_declaration(m.const_color, "extern const int {m.const_color};") + v.add("const int {m.const_color} = {color};") end - color_consts_done.add(m) end + color_consts_done.add(m) end private var color_consts_done = new HashSet[Object] # colorize classe properties fun do_property_coloring do - var mclasses = new HashSet[MClass].from(modelbuilder.model.mclasses) + + var rta = runtime_type_analysis # Layouts - var method_layout_builder: PropertyLayoutBuilder[MMethod] - var attribute_layout_builder: PropertyLayoutBuilder[MAttribute] - if modelbuilder.toolcontext.opt_bm_typing.value then - method_layout_builder = new MMethodBMizer(self.mainmodule) - attribute_layout_builder = new MAttributeBMizer(self.mainmodule) + var poset = mainmodule.flatten_mclass_hierarchy + var mclasses = new HashSet[MClass].from(poset) + var colorer = new POSetColorer[MClass] + colorer.colorize(poset) + + # The dead methods, still need to provide a dead color symbol + var dead_methods = new Array[MMethod] + + # lookup properties to build layout with + var mmethods = new HashMap[MClass, Set[PropertyLayoutElement]] + var mattributes = new HashMap[MClass, Set[MAttribute]] + for mclass in mclasses do + mmethods[mclass] = new HashSet[PropertyLayoutElement] + mattributes[mclass] = new HashSet[MAttribute] + for mprop in self.mainmodule.properties(mclass) do + if mprop isa MMethod then + if not modelbuilder.toolcontext.opt_colo_dead_methods.value and rta != null and not rta.live_methods.has(mprop) then + dead_methods.add(mprop) + continue + end + mmethods[mclass].add(mprop) + else if mprop isa MAttribute then + mattributes[mclass].add(mprop) + end + end + end + + # Collect all super calls (dead or not) + var all_super_calls = new HashSet[MMethodDef] + for mmodule in self.mainmodule.in_importation.greaters do + for mclassdef in mmodule.mclassdefs do + for mpropdef in mclassdef.mpropdefs do + if not mpropdef isa MMethodDef then continue + if mpropdef.has_supercall then + all_super_calls.add(mpropdef) + end + end + end + end + + # lookup super calls and add it to the list of mmethods to build layout with + var super_calls + if rta != null then + super_calls = rta.live_super_sends else - method_layout_builder = new MMethodColorer(self.mainmodule) - attribute_layout_builder = new MAttributeColorer(self.mainmodule) + super_calls = all_super_calls + end + + for mmethoddef in super_calls do + var mclass = mmethoddef.mclassdef.mclass + mmethods[mclass].add(mmethoddef) + for descendant in mclass.in_hierarchy(self.mainmodule).smallers do + mmethods[descendant].add(mmethoddef) + end end # methods coloration - var method_layout = method_layout_builder.build_layout(mclasses) - self.method_tables = build_method_tables(mclasses, method_layout) - self.compile_color_consts(method_layout.pos) - self.method_layout = method_layout + var meth_colorer = new POSetBucketsColorer[MClass, PropertyLayoutElement](poset, colorer.conflicts) + method_colors = meth_colorer.colorize(mmethods) + method_tables = build_method_tables(mclasses, super_calls) + compile_color_consts(method_colors) + + # attribute null color to dead methods and supercalls + for mproperty in dead_methods do + compile_color_const(new_visitor, mproperty, -1) + end + for mpropdef in all_super_calls do + if super_calls.has(mpropdef) then continue + compile_color_const(new_visitor, mpropdef, -1) + end # attributes coloration - var attr_layout = attribute_layout_builder.build_layout(mclasses) - self.attr_tables = build_attr_tables(mclasses, attr_layout) - self.compile_color_consts(attr_layout.pos) - self.attr_layout = attr_layout + var attr_colorer = new POSetBucketsColorer[MClass, MAttribute](poset, colorer.conflicts) + attr_colors = attr_colorer.colorize(mattributes) + attr_tables = build_attr_tables(mclasses) + compile_color_consts(attr_colors) end - fun build_method_tables(mclasses: Set[MClass], layout: Layout[MProperty]): Map[MClass, Array[nullable MPropDef]] do + fun build_method_tables(mclasses: Set[MClass], super_calls: Set[MMethodDef]): Map[MClass, Array[nullable MPropDef]] do var tables = new HashMap[MClass, Array[nullable MPropDef]] for mclass in mclasses do var table = new Array[nullable MPropDef] - # first, fill table from parents by reverse linearization order - var parents = self.mainmodule.super_mclasses(mclass) - var lin = self.mainmodule.reverse_linearize_mclasses(parents) - for parent in lin do - for mproperty in self.mainmodule.properties(parent) do - if not mproperty isa MMethod then continue - var color = layout.pos[mproperty] - if table.length <= color then - for i in [table.length .. color[ do - table[i] = null - end - end - for mpropdef in mproperty.mpropdefs do - if mpropdef.mclassdef.mclass == parent then - table[color] = mpropdef - end - end - end - end + tables[mclass] = table + + var mproperties = self.mainmodule.properties(mclass) + var mtype = mclass.intro.bound_mtype - # then override with local properties - for mproperty in self.mainmodule.properties(mclass) do + for mproperty in mproperties do if not mproperty isa MMethod then continue - var color = layout.pos[mproperty] + if not method_colors.has_key(mproperty) then continue + var color = method_colors[mproperty] if table.length <= color then for i in [table.length .. color[ do table[i] = null end end - for mpropdef in mproperty.mpropdefs do - if mpropdef.mclassdef.mclass == mclass then - table[color] = mpropdef + table[color] = mproperty.lookup_first_definition(mainmodule, mtype) + end + + for supercall in super_calls do + if not mtype.collect_mclassdefs(mainmodule).has(supercall.mclassdef) then continue + + var color = method_colors[supercall] + if table.length <= color then + for i in [table.length .. color[ do + table[i] = null end end + var mmethoddef = supercall.lookup_next_definition(mainmodule, mtype) + table[color] = mmethoddef end - tables[mclass] = table + end return tables end - fun build_attr_tables(mclasses: Set[MClass], layout: Layout[MProperty]): Map[MClass, Array[nullable MPropDef]] do + fun build_attr_tables(mclasses: Set[MClass]): Map[MClass, Array[nullable MPropDef]] do var tables = new HashMap[MClass, Array[nullable MPropDef]] for mclass in mclasses do var table = new Array[nullable MPropDef] - # first, fill table from parents by reverse linearization order - var parents = self.mainmodule.super_mclasses(mclass) - var lin = self.mainmodule.reverse_linearize_mclasses(parents) - for parent in lin do - for mproperty in self.mainmodule.properties(parent) do - if not mproperty isa MAttribute then continue - var color = layout.pos[mproperty] - if table.length <= color then - for i in [table.length .. color[ do - table[i] = null - end - end - for mpropdef in mproperty.mpropdefs do - if mpropdef.mclassdef.mclass == parent then - table[color] = mpropdef - end - end - end - end + tables[mclass] = table - # then override with local properties - for mproperty in self.mainmodule.properties(mclass) do + var mproperties = self.mainmodule.properties(mclass) + var mtype = mclass.intro.bound_mtype + + for mproperty in mproperties do if not mproperty isa MAttribute then continue - var color = layout.pos[mproperty] + if not attr_colors.has_key(mproperty) then continue + var color = attr_colors[mproperty] if table.length <= color then for i in [table.length .. color[ do table[i] = null end end - for mpropdef in mproperty.mpropdefs do - if mpropdef.mclassdef.mclass == mclass then - table[color] = mpropdef - end - end + table[color] = mproperty.lookup_first_definition(mainmodule, mtype) end - tables[mclass] = table end return tables end # colorize live types of the program - private fun do_type_coloring: Set[MType] do + private fun do_type_coloring: POSet[MType] do + # Collect types to colorize + var live_types = runtime_type_analysis.live_types + var live_cast_types = runtime_type_analysis.live_cast_types var mtypes = new HashSet[MType] - mtypes.add_all(self.runtime_type_analysis.live_types) - mtypes.add_all(self.runtime_type_analysis.live_cast_types) - mtypes.add_all(self.undead_types) + mtypes.add_all(live_types) + mtypes.add_all(live_cast_types) for c in self.box_kinds.keys do mtypes.add(c.mclass_type) end - for mtype in mtypes do - retieve_live_partial_types(mtype) - end - mtypes.add_all(self.partial_types) - - # Typing Layout - var layout_builder: TypingLayoutBuilder[MType] - if modelbuilder.toolcontext.opt_bm_typing.value then - layout_builder = new MTypeBMizer(self.mainmodule) - else if modelbuilder.toolcontext.opt_phmod_typing.value then - layout_builder = new MTypeHasher(new PHModOperator, self.mainmodule) - else if modelbuilder.toolcontext.opt_phand_typing.value then - layout_builder = new MTypeHasher(new PHAndOperator, self.mainmodule) - else - layout_builder = new MTypeColorer(self.mainmodule) - end - - # colorize types - self.type_layout = layout_builder.build_layout(mtypes) - self.type_tables = self.build_type_tables(mtypes) + # Compute colors + var poset = poset_from_mtypes(mtypes) + var colorer = new POSetColorer[MType] + colorer.colorize(poset) + type_ids = colorer.ids + type_colors = colorer.colors + type_tables = build_type_tables(poset) # VT and FT are stored with other unresolved types in the big resolution_tables self.compile_resolution_tables(mtypes) - return mtypes + return poset + end + + private fun poset_from_mtypes(mtypes: Set[MType]): POSet[MType] do + var poset = new POSet[MType] + for e in mtypes do + poset.add_node(e) + for o in mtypes do + if e == o then continue + if e.is_subtype(mainmodule, null, o) then + poset.add_edge(e, o) + end + end + end + return poset end # Build type tables - fun build_type_tables(mtypes: Set[MType]): Map[MType, Array[nullable MType]] do + fun build_type_tables(mtypes: POSet[MType]): Map[MType, Array[nullable MType]] do var tables = new HashMap[MType, Array[nullable MType]] - var layout = self.type_layout for mtype in mtypes do var table = new Array[nullable MType] - var supers = new HashSet[MType] - supers.add_all(self.mainmodule.super_mtypes(mtype, mtypes)) - supers.add(mtype) - for sup in supers do - var color: Int - if layout isa PHLayout[MType, MType] then - color = layout.hashes[mtype][sup] - else - color = layout.pos[sup] - end + for sup in mtypes[mtype].greaters do + var color = type_colors[sup] if table.length <= color then for i in [table.length .. color[ do table[i] = null @@ -406,18 +484,9 @@ class SeparateCompiler end # Compute the table layout with the prefered method - var resolution_builder: ResolutionLayoutBuilder - if modelbuilder.toolcontext.opt_bm_typing.value then - resolution_builder = new ResolutionBMizer - else if modelbuilder.toolcontext.opt_phmod_typing.value then - resolution_builder = new ResolutionHasher(new PHModOperator) - else if modelbuilder.toolcontext.opt_phand_typing.value then - resolution_builder = new ResolutionHasher(new PHAndOperator) - else - resolution_builder = new ResolutionColorer - end - self.resolution_layout = resolution_builder.build_layout(mtype2unresolved) - self.resolution_tables = self.build_resolution_tables(mtype2unresolved) + var colorer = new BucketsColorer[MType, MType] + opentype_colors = colorer.colorize(mtype2unresolved) + resolution_tables = self.build_resolution_tables(mtype2unresolved) # Compile a C constant for each collected unresolved type. # Either to a color, or to -1 if the unresolved type is dead (no live receiver can require it) @@ -427,8 +496,8 @@ class SeparateCompiler end var all_unresolved_types_colors = new HashMap[MType, Int] for t in all_unresolved do - if self.resolution_layout.pos.has_key(t) then - all_unresolved_types_colors[t] = self.resolution_layout.pos[t] + if opentype_colors.has_key(t) then + all_unresolved_types_colors[t] = opentype_colors[t] else all_unresolved_types_colors[t] = -1 end @@ -444,16 +513,10 @@ class SeparateCompiler fun build_resolution_tables(elements: Map[MClassType, Set[MType]]): Map[MClassType, Array[nullable MType]] do var tables = new HashMap[MClassType, Array[nullable MType]] - var layout = self.resolution_layout for mclasstype, mtypes in elements do var table = new Array[nullable MType] for mtype in mtypes do - var color: Int - if layout isa PHLayout[MClassType, MType] then - color = layout.hashes[mclasstype][mtype] - else - color = layout.pos[mtype] - end + var color = opentype_colors[mtype] if table.length <= color then for i in [table.length .. color[ do table[i] = null @@ -466,34 +529,6 @@ class SeparateCompiler return tables 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.mainmodule.properties(mclass_type.mclass) do - if vt isa MVirtualTypeProp then - var anchored = vt.mvirtualtype.lookup_bound(self.mainmodule, mclass_type).anchor_to(self.mainmodule, mclass_type) - self.partial_types.add(anchored) - end - end - end - # Separately compile all the method definitions of the module fun compile_module_to_c(mmodule: MModule) do @@ -502,13 +537,13 @@ class SeparateCompiler for cd in mmodule.mclassdefs do for pd in cd.mpropdefs do if not pd isa MMethodDef then continue + var rta = runtime_type_analysis + if modelbuilder.toolcontext.opt_skip_dead_methods.value and rta != null and not rta.live_methoddefs.has(pd) then continue #print "compile {pd} @ {cd} @ {mmodule}" - var r = new SeparateRuntimeFunction(pd) + var r = pd.separate_runtime_function r.compile_to_c(self) - if true or cd.bound_mtype.ctype != "val*" then - var r2 = new VirtualRuntimeFunction(pd) - r2.compile_to_c(self) - end + var r2 = pd.virtual_runtime_function + r2.compile_to_c(self) end end self.mainmodule = old_module @@ -517,82 +552,87 @@ class SeparateCompiler # Globaly compile the type structure of a live type fun compile_type_to_c(mtype: MType) do + assert not mtype.need_anchor + var is_live = mtype isa MClassType and runtime_type_analysis.live_types.has(mtype) + var is_cast_live = runtime_type_analysis.live_cast_types.has(mtype) var c_name = mtype.c_name var v = new SeparateCompilerVisitor(self) v.add_decl("/* runtime type {mtype} */") # extern const struct type_X - 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("short int is_nullable;") - self.header.add_decl("const struct types *resolution_table;") - self.header.add_decl("int table_size;") - self.header.add_decl("int type_table[{self.type_tables[mtype].length}];") - self.header.add_decl("\};") + self.provide_declaration("type_{c_name}", "extern const struct type type_{c_name};") # const struct type_X - v.add_decl("const struct type_{c_name} type_{c_name} = \{") - v.add_decl("{self.type_layout.ids[mtype]},") + v.add_decl("const struct type type_{c_name} = \{") + + # type id (for cast target) + if is_cast_live then + v.add_decl("{type_ids[mtype]},") + else + v.add_decl("-1, /*CAST DEAD*/") + end + + # type name v.add_decl("\"{mtype}\", /* class_name_string */") - var layout = self.type_layout - if layout isa PHLayout[MType, MType] then - v.add_decl("{layout.masks[mtype]},") + + # type color (for cast target) + if is_cast_live then + v.add_decl("{type_colors[mtype]},") else - v.add_decl("{layout.pos[mtype]},") + v.add_decl("-1, /*CAST DEAD*/") end + + # is_nullable bit if mtype isa MNullableType then v.add_decl("1,") else v.add_decl("0,") end - if compile_type_resolution_table(mtype) then - v.add_decl("(struct types*) &resolution_table_{c_name},") + + # resolution table (for receiver) + if is_live then + var mclass_type = mtype.as_notnullable + assert mclass_type isa MClassType + if resolution_tables[mclass_type].is_empty then + v.add_decl("NULL, /*NO RESOLUTIONS*/") + else + compile_type_resolution_table(mtype) + v.require_declaration("resolution_table_{c_name}") + v.add_decl("&resolution_table_{c_name},") + end else - v.add_decl("NULL,") + v.add_decl("NULL, /*DEAD*/") end - v.add_decl("{self.type_tables[mtype].length},") - v.add_decl("\{") - for stype in self.type_tables[mtype] do - if stype == null then - v.add_decl("-1, /* empty */") - else - v.add_decl("{self.type_layout.ids[stype]}, /* {stype} */") + + # cast table (for receiver) + if is_live then + v.add_decl("{self.type_tables[mtype].length},") + v.add_decl("\{") + for stype in self.type_tables[mtype] do + if stype == null then + v.add_decl("-1, /* empty */") + else + v.add_decl("{type_ids[stype]}, /* {stype} */") + end end + v.add_decl("\},") + else + v.add_decl("0, \{\}, /*DEAD TYPE*/") end - v.add_decl("\},") v.add_decl("\};") end - fun compile_type_resolution_table(mtype: MType): Bool do + fun compile_type_resolution_table(mtype: MType) 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.resolution_tables.has_key(mclass_type) then return false - - var layout = self.resolution_layout + var mclass_type = mtype.as_notnullable.as(MClassType) # extern const struct resolution_table_X resolution_table_X - self.header.add_decl("extern const struct resolution_table_{mtype.c_name} resolution_table_{mtype.c_name};") - self.header.add_decl("struct resolution_table_{mtype.c_name} \{") - if layout isa PHLayout[MClassType, MType] then - self.header.add_decl("int mask;") - end - self.header.add_decl("struct type *types[{self.resolution_tables[mclass_type].length}];") - self.header.add_decl("\};") + self.provide_declaration("resolution_table_{mtype.c_name}", "extern const struct types resolution_table_{mtype.c_name};") # const struct fts_table_X fts_table_X var v = new_visitor - v.add_decl("const struct resolution_table_{mtype.c_name} resolution_table_{mtype.c_name} = \{") - if layout isa PHLayout[MClassType, MType] then - v.add_decl("{layout.masks[mclass_type]},") - end + v.add_decl("const struct types resolution_table_{mtype.c_name} = \{") + v.add_decl("0, /* dummy */") v.add_decl("\{") for t in self.resolution_tables[mclass_type] do if t == null then @@ -603,16 +643,16 @@ class SeparateCompiler # the value stored is tv. var tv = t.resolve_for(mclass_type, mclass_type, self.mainmodule, true) # FIXME: What typeids means here? How can a tv not be live? - if self.type_layout.ids.has_key(tv) then - v.add_decl("(struct type*)&type_{tv.c_name}, /* {t}: {tv} */") + if type_ids.has_key(tv) then + v.require_declaration("type_{tv.c_name}") + v.add_decl("&type_{tv.c_name}, /* {t}: {tv} */") else v.add_decl("NULL, /* empty ({t}: {tv} not a live type) */") end end end - v.add_decl("\},") + v.add_decl("\}") v.add_decl("\};") - return true end # Globally compile the table of the class mclass @@ -622,123 +662,126 @@ class SeparateCompiler do var mtype = mclass.intro.bound_mtype var c_name = mclass.c_name + var c_instance_name = mclass.c_instance_name var vft = self.method_tables[mclass] var attrs = self.attr_tables[mclass] var v = new_visitor - v.add_decl("/* runtime class {c_name} */") + var rta = runtime_type_analysis + var is_dead = rta != null and not rta.live_classes.has(mclass) and mtype.ctype == "val*" and mclass.name != "NativeArray" - self.header.add_decl("struct class_{c_name} \{") - self.header.add_decl("int box_kind;") - self.header.add_decl("nitmethod_t vft[{vft.length}];") - self.header.add_decl("\};") + v.add_decl("/* runtime class {c_name} */") # Build class vft - self.header.add_decl("extern const struct class_{c_name} class_{c_name};") - v.add_decl("const struct class_{c_name} class_{c_name} = \{") - v.add_decl("{self.box_kind_of(mclass)}, /* box_kind */") - v.add_decl("\{") - for i in [0 .. vft.length[ do - var mpropdef = vft[i] - if mpropdef == null then - v.add_decl("NULL, /* empty */") - else - if true or mpropdef.mclassdef.bound_mtype.ctype != "val*" then - v.add_decl("(nitmethod_t)VIRTUAL_{mpropdef.c_name}, /* pointer to {mclass.intro_mmodule}:{mclass}:{mpropdef} */") + if not is_dead then + self.provide_declaration("class_{c_name}", "extern const struct class class_{c_name};") + v.add_decl("const struct class class_{c_name} = \{") + v.add_decl("{self.box_kind_of(mclass)}, /* box_kind */") + v.add_decl("\{") + for i in [0 .. vft.length[ do + var mpropdef = vft[i] + if mpropdef == null then + v.add_decl("NULL, /* empty */") else - v.add_decl("(nitmethod_t){mpropdef.c_name}, /* pointer to {mclass.intro_mmodule}:{mclass}:{mpropdef} */") + assert mpropdef isa MMethodDef + if rta != null and not rta.live_methoddefs.has(mpropdef) then + v.add_decl("NULL, /* DEAD {mclass.intro_mmodule}:{mclass}:{mpropdef} */") + continue + end + var rf = mpropdef.virtual_runtime_function + v.require_declaration(rf.c_name) + v.add_decl("(nitmethod_t){rf.c_name}, /* pointer to {mclass.intro_mmodule}:{mclass}:{mpropdef} */") end end + v.add_decl("\}") + v.add_decl("\};") end - v.add_decl("\}") - v.add_decl("\};") if mtype.ctype != "val*" then - #Build instance struct - self.header.add_decl("struct instance_{c_name} \{") - self.header.add_decl("const struct type *type;") - self.header.add_decl("const struct class *class;") - self.header.add_decl("{mtype.ctype} value;") - self.header.add_decl("\};") + if mtype.mclass.name == "Pointer" or mtype.mclass.kind != extern_kind then + #Build instance struct + self.header.add_decl("struct instance_{c_instance_name} \{") + self.header.add_decl("const struct type *type;") + self.header.add_decl("const struct class *class;") + self.header.add_decl("{mtype.ctype} value;") + self.header.add_decl("\};") + end - if not self.runtime_type_analysis.live_types.has(mtype) then return + if not rta.live_types.has(mtype) then return - self.header.add_decl("val* BOX_{c_name}({mtype.ctype});") + #Build BOX + self.provide_declaration("BOX_{c_name}", "val* BOX_{c_name}({mtype.ctype});") v.add_decl("/* allocate {mtype} */") v.add_decl("val* BOX_{mtype.c_name}({mtype.ctype} value) \{") - v.add("struct instance_{c_name}*res = GC_MALLOC(sizeof(struct instance_{c_name}));") - v.add("res->type = (struct type*) &type_{c_name};") - v.add("res->class = (struct class*) &class_{c_name};") + v.add("struct instance_{c_instance_name}*res = nit_alloc(sizeof(struct instance_{c_instance_name}));") + v.require_declaration("type_{c_name}") + v.add("res->type = &type_{c_name};") + v.require_declaration("class_{c_name}") + v.add("res->class = &class_{c_name};") v.add("res->value = value;") v.add("return (val*)res;") v.add("\}") return - end - - var is_native_array = mclass.name == "NativeArray" - - var sig - if is_native_array then - sig = "int length, struct type* type" - else - sig = "struct type* type" - end - - #Build instance struct - #extern const struct instance_array__NativeArray instance_array__NativeArray; - self.header.add_decl("struct instance_{c_name} \{") - self.header.add_decl("const struct type *type;") - self.header.add_decl("const struct class *class;") - self.header.add_decl("nitattribute_t attrs[{attrs.length}];") - if is_native_array then - # NativeArrays are just a instance header followed by an array of values + else if mclass.name == "NativeArray" then + #Build instance struct + self.header.add_decl("struct instance_{c_instance_name} \{") + self.header.add_decl("const struct type *type;") + self.header.add_decl("const struct class *class;") + # NativeArrays are just a instance header followed by a length and an array of values + self.header.add_decl("int length;") self.header.add_decl("val* values[0];") - end - self.header.add_decl("\};") - + self.header.add_decl("\};") - self.header.add_decl("{mtype.ctype} NEW_{c_name}({sig});") - v.add_decl("/* allocate {mtype} */") - v.add_decl("{mtype.ctype} NEW_{c_name}({sig}) \{") - var res = v.new_named_var(mtype, "self") - res.is_exact = true - if is_native_array then + #Build NEW + self.provide_declaration("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(int length, const struct type* type);") + v.add_decl("/* allocate {mtype} */") + v.add_decl("{mtype.ctype} NEW_{c_name}(int length, const struct type* type) \{") + var res = v.get_name("self") + v.add_decl("struct instance_{c_instance_name} *{res};") var mtype_elt = mtype.arguments.first - v.add("{res} = GC_MALLOC(sizeof(struct instance_{c_name}) + length*sizeof({mtype_elt.ctype}));") - else - v.add("{res} = GC_MALLOC(sizeof(struct instance_{c_name}));") - end - v.add("{res}->type = type;") - if v.compiler.modelbuilder.toolcontext.opt_hardening.value then - v.add("if(type == NULL) \{") - v.add_abort("type null") - v.add("\}") - v.add("if(type->resolution_table == NULL) \{") - v.add("fprintf(stderr, \"Insantiation of a dead type: %s\\n\", type->name);") - v.add_abort("type dead") + v.add("{res} = nit_alloc(sizeof(struct instance_{c_instance_name}) + length*sizeof({mtype_elt.ctype}));") + v.add("{res}->type = type;") + hardening_live_type(v, "type") + v.require_declaration("class_{c_name}") + v.add("{res}->class = &class_{c_name};") + v.add("{res}->length = length;") + v.add("return (val*){res};") v.add("\}") + return end - v.add("{res}->class = (struct class*) &class_{c_name};") - self.generate_init_attr(v, res, mtype) - v.add("return {res};") + #Build NEW + self.provide_declaration("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);") + v.add_decl("/* allocate {mtype} */") + v.add_decl("{mtype.ctype} NEW_{c_name}(const struct type* type) \{") + if is_dead then + v.add_abort("{mclass} is DEAD") + else + var res = v.new_named_var(mtype, "self") + res.is_exact = true + v.add("{res} = nit_alloc(sizeof(struct instance) + {attrs.length}*sizeof(nitattribute_t));") + v.add("{res}->type = type;") + hardening_live_type(v, "type") + v.require_declaration("class_{c_name}") + v.add("{res}->class = &class_{c_name};") + self.generate_init_attr(v, res, mtype) + v.set_finalizer res + v.add("return {res};") + end v.add("\}") - - generate_check_init_instance(mtype) end - redef fun generate_check_init_instance(mtype) + # Add a dynamic test to ensure that the type referenced by `t` is a live type + fun hardening_live_type(v: VISITOR, t: String) do - if self.modelbuilder.toolcontext.opt_no_check_initialization.value then return - - var v = self.new_visitor - var c_name = mtype.mclass.c_name - var res = new RuntimeVariable("self", mtype, mtype) - self.header.add_decl("void CHECK_NEW_{c_name}({mtype.ctype});") - v.add_decl("/* allocate {mtype} */") - v.add_decl("void CHECK_NEW_{c_name}({mtype.ctype} {res}) \{") - self.generate_check_attr(v, res, mtype) + if not v.compiler.modelbuilder.toolcontext.opt_hardening.value then return + v.add("if({t} == NULL) \{") + v.add_abort("type null") + v.add("\}") + v.add("if({t}->table_size == 0) \{") + v.add("PRINT_ERROR(\"Insantiation of a dead type: %s\\n\", {t}->name);") + v.add_abort("type dead") v.add("\}") end @@ -757,6 +800,16 @@ class SeparateCompiler if self.modelbuilder.toolcontext.opt_tables_metrics.value then display_sizes end + if self.modelbuilder.toolcontext.opt_isset_checks_metrics.value then + display_isset_checks + end + var tc = self.modelbuilder.toolcontext + tc.info("# implementation of method invocation",2) + var nb_invok_total = modelbuilder.nb_invok_by_tables + modelbuilder.nb_invok_by_direct + modelbuilder.nb_invok_by_inline + tc.info("total number of invocations: {nb_invok_total}",2) + tc.info("invocations by VFT send: {modelbuilder.nb_invok_by_tables} ({div(modelbuilder.nb_invok_by_tables,nb_invok_total)}%)",2) + tc.info("invocations by direct call: {modelbuilder.nb_invok_by_direct} ({div(modelbuilder.nb_invok_by_direct,nb_invok_total)}%)",2) + tc.info("invocations by inlining: {modelbuilder.nb_invok_by_inline} ({div(modelbuilder.nb_invok_by_inline,nb_invok_total)}%)",2) end fun display_sizes @@ -801,6 +854,37 @@ class SeparateCompiler end print "\t{total}\t{holes}" end + + protected var isset_checks_count = 0 + protected var attr_read_count = 0 + + fun display_isset_checks do + print "# total number of compiled attribute reads" + print "\t{attr_read_count}" + print "# total number of compiled isset-checks" + print "\t{isset_checks_count}" + end + + redef fun compile_nitni_structs + do + self.header.add_decl """ +struct nitni_instance \{ + struct nitni_instance *next, + *prev; /* adjacent global references in global list */ + int count; /* number of time this global reference has been marked */ + struct instance *value; +\}; +""" + super + end + + redef fun finalize_ffi_for_module(mmodule) + do + var old_module = self.mainmodule + self.mainmodule = mmodule + super + self.mainmodule = old_module + end end # A visitor on the AST of property definition that generate the C code of a separate compilation process. @@ -832,22 +916,27 @@ class SeparateCompilerVisitor else if value.mtype.ctype == "val*" and mtype.ctype == "val*" then return value else if value.mtype.ctype == "val*" then - return self.new_expr("((struct instance_{mtype.c_name}*){value})->value; /* autounbox from {value.mtype} to {mtype} */", mtype) + return self.new_expr("((struct instance_{mtype.c_instance_name}*){value})->value; /* autounbox from {value.mtype} to {mtype} */", mtype) else if mtype.ctype == "val*" then var valtype = value.mtype.as(MClassType) var res = self.new_var(mtype) - if not compiler.runtime_type_analysis.live_types.has(valtype) then + if compiler.runtime_type_analysis != null and not compiler.runtime_type_analysis.live_types.has(valtype) then self.add("/*no autobox from {value.mtype} to {mtype}: {value.mtype} is not live! */") - self.add("printf(\"Dead code executed!\\n\"); exit(1);") + self.add("PRINT_ERROR(\"Dead code executed!\\n\"); show_backtrace(1);") return res end + self.require_declaration("BOX_{valtype.c_name}") self.add("{res} = BOX_{valtype.c_name}({value}); /* autobox from {value.mtype} to {mtype} */") return res + else if (value.mtype.ctype == "void*" and mtype.ctype == "void*") or + (value.mtype.ctype == "char*" and mtype.ctype == "void*") or + (value.mtype.ctype == "void*" and mtype.ctype == "char*") then + return value else # Bad things will appen! var res = self.new_var(mtype) self.add("/* {res} left unintialized (cannot convert {value.mtype} to {mtype}) */") - self.add("printf(\"Cast error: Cannot cast %s to %s.\\n\", \"{value.mtype}\", \"{mtype}\"); exit(1);") + self.add("PRINT_ERROR(\"Cast error: Cannot cast %s to %s.\\n\", \"{value.mtype}\", \"{mtype}\"); show_backtrace(1);") return res end end @@ -859,52 +948,73 @@ class SeparateCompilerVisitor if value.mtype.ctype == "val*" then return "{value}->type" else + compiler.undead_types.add(value.mtype) + self.require_declaration("type_{value.mtype.c_name}") return "(&type_{value.mtype.c_name})" end end - redef fun send(mmethod, arguments) + redef fun compile_callsite(callsite, args) do - if arguments.first.mcasttype.ctype != "val*" then - return self.monomorphic_send(mmethod, arguments.first.mcasttype, arguments) + var rta = compiler.runtime_type_analysis + var recv = args.first.mtype + if compiler.modelbuilder.toolcontext.opt_direct_call_monomorph.value and rta != null then + var tgs = rta.live_targets(callsite) + if tgs.length == 1 then + # DIRECT CALL + var mmethod = callsite.mproperty + self.varargize(mmethod.intro, mmethod.intro.msignature.as(not null), args) + var res0 = before_send(mmethod, args) + var res = call(tgs.first, tgs.first.mclassdef.bound_mtype, args) + if res0 != null then + assert res != null + self.assign(res0, res) + res = res0 + end + add("\}") # close the before_send + return res + end end + return super + end + redef fun send(mmethod, arguments) + do + self.varargize(mmethod.intro, mmethod.intro.msignature.as(not null), arguments) - var res: nullable RuntimeVariable - var msignature = mmethod.intro.msignature.resolve_for(mmethod.intro.mclassdef.bound_mtype, mmethod.intro.mclassdef.bound_mtype, mmethod.intro.mclassdef.mmodule, true) - var ret = msignature.return_mtype - if mmethod.is_new then - ret = arguments.first.mtype - res = self.new_var(ret) - else if ret == null then - res = null - else - res = self.new_var(ret) + if arguments.first.mcasttype.ctype != "val*" then + # In order to shortcut the primitive, we need to find the most specific method + # Howverr, because of performance (no flattening), we always work on the realmainmodule + var m = self.compiler.mainmodule + self.compiler.mainmodule = self.compiler.realmainmodule + var res = self.monomorphic_send(mmethod, arguments.first.mcasttype, arguments) + self.compiler.mainmodule = m + return res end - var s = new Buffer - var ss = new Buffer + return table_send(mmethod, arguments, mmethod.const_color) + end + # Handel common special cases before doing the effective method invocation + # This methods handle the `==` and `!=` methods and the case of the null receiver. + # Note: a { is open in the generated C, that enclose and protect the effective method invocation. + # Client must not forget to close the } after them. + # + # The value returned is the result of the common special cases. + # If not null, client must compine it with the result of their own effective method invocation. + # + # If `before_send` can shortcut the whole message sending, a dummy `if(0){` + # is generated to cancel the effective method invocation that will follow + # TODO: find a better approach + private fun before_send(mmethod: MMethod, arguments: Array[RuntimeVariable]): nullable RuntimeVariable + do + var res: nullable RuntimeVariable = null var recv = arguments.first - s.append("val*") - ss.append("{recv}") - self.varargize(mmethod.intro, mmethod.intro.msignature.as(not null), arguments) - for i in [0..msignature.arity[ do - var a = arguments[i+1] - var t = msignature.mparameters[i].mtype - if i == msignature.vararg_rank then - t = arguments[i+1].mcasttype - end - s.append(", {t.ctype}") - a = self.autobox(a, t) - ss.append(", {a}") - end - var consider_null = not self.compiler.modelbuilder.toolcontext.opt_no_check_other.value or mmethod.name == "==" or mmethod.name == "!=" var maybenull = recv.mcasttype isa MNullableType and consider_null if maybenull then self.add("if ({recv} == NULL) \{") if mmethod.name == "==" then - assert res != null + res = self.new_var(bool_type) var arg = arguments[1] if arg.mcasttype isa MNullableType then self.add("{res} = ({arg} == NULL);") @@ -914,7 +1024,7 @@ class SeparateCompilerVisitor self.add("{res} = 0; /* {arg.inspect} cannot be null */") end else if mmethod.name == "!=" then - assert res != null + res = self.new_var(bool_type) var arg = arguments[1] if arg.mcasttype isa MNullableType then self.add("{res} = ({arg} != NULL);") @@ -924,12 +1034,14 @@ class SeparateCompilerVisitor self.add("{res} = 1; /* {arg.inspect} cannot be null */") end else - self.add_abort("Reciever is null") + self.add_abort("Receiver is null") end self.add("\} else \{") + else + self.add("\{") end if not self.compiler.modelbuilder.toolcontext.opt_no_shortcut_equate.value and (mmethod.name == "==" or mmethod.name == "!=") then - assert res != null + if res == null then res = self.new_var(bool_type) # Recv is not null, thus is arg is, it is easy to conclude (and respect the invariants) var arg = arguments[1] if arg.mcasttype isa MNullType then @@ -938,16 +1050,56 @@ class SeparateCompilerVisitor else self.add("{res} = 1; /* arg is null and recv is not */") end - if maybenull then - self.add("\}") - end - return res + self.add("\}") # closes the null case + self.add("if (0) \{") # what follow is useless, CC will drop it + end + end + return res + end + + private fun table_send(mmethod: MMethod, arguments: Array[RuntimeVariable], const_color: String): nullable RuntimeVariable + do + compiler.modelbuilder.nb_invok_by_tables += 1 + if compiler.modelbuilder.toolcontext.opt_invocation_metrics.value then add("count_invoke_by_tables++;") + + assert arguments.length == mmethod.intro.msignature.arity + 1 else debug("Invalid arity for {mmethod}. {arguments.length} arguments given.") + var recv = arguments.first + + var res0 = before_send(mmethod, arguments) + + var res: nullable RuntimeVariable + var msignature = mmethod.intro.msignature.resolve_for(mmethod.intro.mclassdef.bound_mtype, mmethod.intro.mclassdef.bound_mtype, mmethod.intro.mclassdef.mmodule, true) + var ret = msignature.return_mtype + if mmethod.is_new then + ret = arguments.first.mtype + res = self.new_var(ret) + else if ret == null then + res = null + else + res = self.new_var(ret) + end + + var s = new FlatBuffer + var ss = new FlatBuffer + + s.append("val*") + ss.append("{recv}") + for i in [0..msignature.arity[ do + var a = arguments[i+1] + var t = msignature.mparameters[i].mtype + if i == msignature.vararg_rank then + t = arguments[i+1].mcasttype end + s.append(", {t.ctype}") + a = self.autobox(a, t) + ss.append(", {a}") end + var r if ret == null then r = "void" else r = ret.ctype - var call = "(({r} (*)({s}))({arguments.first}->class->vft[{mmethod.const_color}]))({ss}) /* {mmethod} on {arguments.first.inspect}*/" + self.require_declaration(const_color) + var call = "(({r} (*)({s}))({arguments.first}->class->vft[{const_color}]))({ss}) /* {mmethod} on {arguments.first.inspect}*/" if res != null then self.add("{res} = {call};") @@ -955,15 +1107,21 @@ class SeparateCompilerVisitor self.add("{call};") end - if maybenull then - self.add("\}") + if res0 != null then + assert res != null + assign(res0,res) + res = res0 end + self.add("\}") # closes the null case + return res end redef fun call(mmethoddef, recvtype, arguments) do + assert arguments.length == mmethoddef.msignature.arity + 1 else debug("Invalid arity for {mmethoddef}. {arguments.length} arguments given.") + var res: nullable RuntimeVariable var ret = mmethoddef.msignature.return_mtype if mmethoddef.mproperty.is_new then @@ -976,27 +1134,31 @@ class SeparateCompilerVisitor res = self.new_var(ret) end - if self.compiler.modelbuilder.mpropdef2npropdef.has_key(mmethoddef) and - self.compiler.modelbuilder.mpropdef2npropdef[mmethoddef] isa AInternMethPropdef and - not compiler.modelbuilder.toolcontext.opt_no_inline_intern.value then + if (mmethoddef.is_intern and not compiler.modelbuilder.toolcontext.opt_no_inline_intern.value) or + (compiler.modelbuilder.toolcontext.opt_inline_some_methods.value and mmethoddef.can_inline(self)) then + compiler.modelbuilder.nb_invok_by_inline += 1 + if compiler.modelbuilder.toolcontext.opt_invocation_metrics.value then add("count_invoke_by_inline++;") var frame = new Frame(self, mmethoddef, recvtype, arguments) frame.returnlabel = self.get_name("RET_LABEL") frame.returnvar = res var old_frame = self.frame self.frame = frame - self.add("\{ /* Inline {mmethoddef} ({arguments.join(",")}) */") + self.add("\{ /* Inline {mmethoddef} ({arguments.join(",")}) on {arguments.first.inspect} */") mmethoddef.compile_inside_to_c(self, arguments) self.add("{frame.returnlabel.as(not null)}:(void)0;") self.add("\}") self.frame = old_frame return res end + compiler.modelbuilder.nb_invok_by_direct += 1 + if compiler.modelbuilder.toolcontext.opt_invocation_metrics.value then add("count_invoke_by_direct++;") # Autobox arguments self.adapt_signature(mmethoddef, arguments) + self.require_declaration(mmethoddef.c_name) if res == null then - self.add("{mmethoddef.c_name}({arguments.join(", ")});") + self.add("{mmethoddef.c_name}({arguments.join(", ")}); /* Direct call {mmethoddef} on {arguments.first.inspect}*/") return null else self.add("{res} = {mmethoddef.c_name}({arguments.join(", ")});") @@ -1005,11 +1167,18 @@ class SeparateCompilerVisitor return res end - redef fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable + redef fun supercall(m: MMethodDef, recvtype: MClassType, arguments: Array[RuntimeVariable]): nullable RuntimeVariable do - # FIXME implements a polymorphic access in tables - m = m.lookup_next_definition(m.mclassdef.mmodule, m.mclassdef.bound_mtype) - return self.call(m, recvtype, args) + if arguments.first.mcasttype.ctype != "val*" then + # In order to shortcut the primitive, we need to find the most specific method + # However, because of performance (no flattening), we always work on the realmainmodule + var main = self.compiler.mainmodule + self.compiler.mainmodule = self.compiler.realmainmodule + var res = self.monomorphic_super_send(m, recvtype, arguments) + self.compiler.mainmodule = main + return res + end + return table_send(m.mproperty, arguments, m.const_color) end redef fun vararg_instance(mpropdef, recv, varargs, elttype) @@ -1046,6 +1215,7 @@ class SeparateCompilerVisitor return res end + self.require_declaration(a.const_color) if self.compiler.modelbuilder.toolcontext.opt_no_union_attribute.value then self.add("{res} = {recv}->attrs[{a.const_color}] != NULL; /* {a} on {recv.inspect}*/") else @@ -1068,6 +1238,12 @@ class SeparateCompilerVisitor var intromclassdef = a.intro.mclassdef ret = ret.resolve_for(intromclassdef.bound_mtype, intromclassdef.bound_mtype, intromclassdef.mmodule, true) + if self.compiler.modelbuilder.toolcontext.opt_isset_checks_metrics.value then + self.compiler.attr_read_count += 1 + self.add("count_attr_reads++;") + end + + self.require_declaration(a.const_color) if self.compiler.modelbuilder.toolcontext.opt_no_union_attribute.value then # Get the attribute or a box (ie. always a val*) var cret = self.object_type.as_nullable @@ -1077,10 +1253,15 @@ class SeparateCompilerVisitor self.add("{res} = {recv}->attrs[{a.const_color}]; /* {a} on {recv.inspect} */") # Check for Uninitialized attribute - if not ret isa MNullableType and not self.compiler.modelbuilder.toolcontext.opt_no_check_initialization.value then - self.add("if ({res} == NULL) \{") + if not ret isa MNullableType and not self.compiler.modelbuilder.toolcontext.opt_no_check_attr_isset.value then + self.add("if (unlikely({res} == NULL)) \{") self.add_abort("Uninitialized attribute {a.name}") self.add("\}") + + if self.compiler.modelbuilder.toolcontext.opt_isset_checks_metrics.value then + self.compiler.isset_checks_count += 1 + self.add("count_isset_checks++;") + end end # Return the attribute or its unboxed version @@ -1091,10 +1272,14 @@ class SeparateCompilerVisitor self.add("{res} = {recv}->attrs[{a.const_color}].{ret.ctypename}; /* {a} on {recv.inspect} */") # Check for Uninitialized attribute - if ret.ctype == "val*" and not ret isa MNullableType and not self.compiler.modelbuilder.toolcontext.opt_no_check_initialization.value then - self.add("if ({res} == NULL) \{") + if ret.ctype == "val*" and not ret isa MNullableType and not self.compiler.modelbuilder.toolcontext.opt_no_check_attr_isset.value then + self.add("if (unlikely({res} == NULL)) \{") self.add_abort("Uninitialized attribute {a.name}") self.add("\}") + if self.compiler.modelbuilder.toolcontext.opt_isset_checks_metrics.value then + self.compiler.isset_checks_count += 1 + self.add("count_isset_checks++;") + end end return res @@ -1113,6 +1298,7 @@ class SeparateCompilerVisitor # Adapt the value to the declared type value = self.autobox(value, mtype) + self.require_declaration(a.const_color) if self.compiler.modelbuilder.toolcontext.opt_no_union_attribute.value then var attr = "{recv}->attrs[{a.const_color}]" if mtype.ctype != "val*" then @@ -1120,7 +1306,7 @@ class SeparateCompilerVisitor # The attribute is primitive, thus we store it in a box # The trick is to create the box the first time then resuse the box self.add("if ({attr} != NULL) \{") - self.add("((struct instance_{mtype.c_name}*){attr})->value = {value}; /* {a} on {recv.inspect} */") + self.add("((struct instance_{mtype.c_instance_name}*){attr})->value = {value}; /* {a} on {recv.inspect} */") self.add("\} else \{") value = self.autobox(value, self.object_type.as_nullable) self.add("{attr} = {value}; /* {a} on {recv.inspect} */") @@ -1134,27 +1320,46 @@ class SeparateCompilerVisitor end end + # Check that mtype is a live open type + fun hardening_live_open_type(mtype: MType) + do + if not compiler.modelbuilder.toolcontext.opt_hardening.value then return + self.require_declaration(mtype.const_color) + var col = mtype.const_color + self.add("if({col} == -1) \{") + self.add("PRINT_ERROR(\"Resolution of a dead open type: %s\\n\", \"{mtype.to_s.escape_to_c}\");") + self.add_abort("open type dead") + self.add("\}") + end + + # Check that mtype it a pointer to a live cast type + fun hardening_cast_type(t: String) + do + if not compiler.modelbuilder.toolcontext.opt_hardening.value then return + add("if({t} == NULL) \{") + add_abort("cast type null") + add("\}") + add("if({t}->id == -1 || {t}->color == -1) \{") + add("PRINT_ERROR(\"Try to cast on a dead cast type: %s\\n\", {t}->name);") + add_abort("cast type dead") + add("\}") + end + redef fun init_instance(mtype) do + self.require_declaration("NEW_{mtype.mclass.c_name}") var compiler = self.compiler if mtype isa MGenericType and mtype.need_anchor then + hardening_live_open_type(mtype) link_unresolved_type(self.frame.mpropdef.mclassdef, mtype) var recv = self.frame.arguments.first var recv_type_info = self.type_info(recv) - 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_type_info}->resolution_table->types[HASH({recv_type_info}->resolution_table->mask, {mtype.const_color})])", mtype) - else - return self.new_expr("NEW_{mtype.mclass.c_name}((struct type *) {recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype) - end + self.require_declaration(mtype.const_color) + return self.new_expr("NEW_{mtype.mclass.c_name}({recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype) end compiler.undead_types.add(mtype) - return self.new_expr("NEW_{mtype.mclass.c_name}((struct type *) &type_{mtype.c_name})", mtype) - end - - redef fun check_init_instance(value, mtype) - do - if self.compiler.modelbuilder.toolcontext.opt_no_check_initialization.value then return - self.add("CHECK_NEW_{mtype.mclass.c_name}({value});") + self.require_declaration("type_{mtype.c_name}") + return self.new_expr("NEW_{mtype.mclass.c_name}(&type_{mtype.c_name})", mtype) end redef fun type_test(value, mtype, tag) @@ -1191,19 +1396,18 @@ class SeparateCompilerVisitor if ntype.need_anchor then var type_struct = self.get_name("type_struct") - self.add_decl("struct type* {type_struct};") + self.add_decl("const struct type* {type_struct};") # Either with resolution_table with a direct resolution - link_unresolved_type(self.frame.mpropdef.mclassdef, ntype) - if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then - self.add("{type_struct} = {recv_type_info}->resolution_table->types[HASH({recv_type_info}->resolution_table->mask, {ntype.const_color})];") - else - self.add("{type_struct} = {recv_type_info}->resolution_table->types[{ntype.const_color}];") - end + hardening_live_open_type(mtype) + link_unresolved_type(self.frame.mpropdef.mclassdef, mtype) + self.require_declaration(mtype.const_color) + self.add("{type_struct} = {recv_type_info}->resolution_table->types[{mtype.const_color}];") if compiler.modelbuilder.toolcontext.opt_typing_test_metrics.value then self.compiler.count_type_test_unresolved[tag] += 1 self.add("count_type_test_unresolved_{tag}++;") end + hardening_cast_type(type_struct) self.add("{cltype} = {type_struct}->color;") self.add("{idtype} = {type_struct}->id;") if maybe_null and accept_null == "0" then @@ -1214,6 +1418,8 @@ class SeparateCompilerVisitor end else if ntype isa MClassType then compiler.undead_types.add(mtype) + self.require_declaration("type_{mtype.c_name}") + hardening_cast_type("(&type_{mtype.c_name})") self.add("{cltype} = type_{mtype.c_name}.color;") self.add("{idtype} = type_{mtype.c_name}.id;") if compiler.modelbuilder.toolcontext.opt_typing_test_metrics.value then @@ -1221,7 +1427,7 @@ class SeparateCompilerVisitor self.add("count_type_test_resolved_{tag}++;") end else - self.add("printf(\"NOT YET IMPLEMENTED: type_test(%s, {mtype}).\\n\", \"{value.inspect}\"); exit(1);") + self.add("PRINT_ERROR(\"NOT YET IMPLEMENTED: type_test(%s, {mtype}).\\n\", \"{value.inspect}\"); show_backtrace(1);") end # check color is in table @@ -1231,9 +1437,6 @@ class SeparateCompilerVisitor self.add("\} else \{") end var value_type_info = self.type_info(value) - if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then - self.add("{cltype} = HASH({value_type_info}->color, {idtype});") - end self.add("if({cltype} >= {value_type_info}->table_size) \{") self.add("{res} = 0;") self.add("\} else \{") @@ -1262,7 +1465,8 @@ class SeparateCompilerVisitor self.add("{res} = 0; /* is_same_type_test: incompatible types {value1.mtype} vs. {value2.mtype}*/") else var mtype1 = value1.mtype.as(MClassType) - self.add("{res} = ({value2} != NULL) && ({value2}->class == (struct class*) &class_{mtype1.c_name}); /* is_same_type_test */") + self.require_declaration("class_{mtype1.c_name}") + self.add("{res} = ({value2} != NULL) && ({value2}->class == &class_{mtype1.c_name}); /* is_same_type_test */") end else self.add("{res} = ({value1} == {value2}) || ({value1} != NULL && {value2} != NULL && {value1}->class == {value2}->class); /* is_same_type_test */") @@ -1276,7 +1480,10 @@ class SeparateCompilerVisitor self.add_decl("const char* {res};") if value.mtype.ctype == "val*" then self.add "{res} = {value} == NULL ? \"null\" : {value}->type->name;" + else if value.mtype isa MClassType and value.mtype.as(MClassType).mclass.kind == extern_kind then + self.add "{res} = \"{value.mtype.as(MClassType).mclass}\";" else + self.require_declaration("type_{value.mtype.c_name}") self.add "{res} = type_{value.mtype.c_name}.name;" end return res @@ -1297,7 +1504,8 @@ class SeparateCompilerVisitor self.add("{res} = 0; /* incompatible types {value1.mtype} vs. {value2.mtype}*/") else var mtype1 = value1.mtype.as(MClassType) - self.add("{res} = ({value2} != NULL) && ({value2}->class == (struct class*) &class_{mtype1.c_name});") + self.require_declaration("class_{mtype1.c_name}") + self.add("{res} = ({value2} != NULL) && ({value2}->class == &class_{mtype1.c_name});") self.add("if ({res}) \{") self.add("{res} = ({self.autobox(value2, value1.mtype)} == {value1});") self.add("\}") @@ -1355,12 +1563,12 @@ class SeparateCompilerVisitor end end if primitive != null then - test.add("((struct instance_{primitive.c_name}*){value1})->value == ((struct instance_{primitive.c_name}*){value2})->value") + test.add("((struct instance_{primitive.c_instance_name}*){value1})->value == ((struct instance_{primitive.c_instance_name}*){value2})->value") else if can_be_primitive(value1) and can_be_primitive(value2) then test.add("{value1}->class == {value2}->class") var s = new Array[String] for t, v in self.compiler.box_kinds do - s.add "({value1}->class->box_kind == {v} && ((struct instance_{t.c_name}*){value1})->value == ((struct instance_{t.c_name}*){value2})->value)" + s.add "({value1}->class->box_kind == {v} && ((struct instance_{t.c_instance_name}*){value1})->value == ((struct instance_{t.c_instance_name}*){value2})->value)" end test.add("({s.join(" || ")})") else @@ -1373,8 +1581,7 @@ class SeparateCompilerVisitor fun can_be_primitive(value: RuntimeVariable): Bool do - var t = value.mcasttype - if t isa MNullableType then t = t.mtype + var t = value.mcasttype.as_notnullable if not t isa MClassType then return false var k = t.mclass.kind return k == interface_kind or t.ctype != "val*" @@ -1400,43 +1607,45 @@ class SeparateCompilerVisitor self.add("((struct instance_{nclass.c_name}*){nat})->values[{i}] = (val*) {r};") end 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 + redef fun native_array_instance(elttype: MType, length: RuntimeVariable): RuntimeVariable do var mtype = self.get_class("NativeArray").get_mtype([elttype]) + self.require_declaration("NEW_{mtype.mclass.c_name}") assert mtype isa MGenericType var compiler = self.compiler if mtype.need_anchor then + hardening_live_open_type(mtype) link_unresolved_type(self.frame.mpropdef.mclassdef, mtype) var recv = self.frame.arguments.first var recv_type_info = self.type_info(recv) - 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_type_info}->resolution_table->types[HASH({recv_type_info}->resolution_table->mask, {mtype.const_color})])", mtype) - else - return self.new_expr("NEW_{mtype.mclass.c_name}({length}, (struct type *) {recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype) - end + self.require_declaration(mtype.const_color) + return self.new_expr("NEW_{mtype.mclass.c_name}({length}, {recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype) end compiler.undead_types.add(mtype) - return self.new_expr("NEW_{mtype.mclass.c_name}({length}, (struct type *) &type_{mtype.c_name})", mtype) + self.require_declaration("type_{mtype.c_name}") + return self.new_expr("NEW_{mtype.mclass.c_name}({length}, &type_{mtype.c_name})", mtype) end redef fun native_array_def(pname, ret_type, arguments) do var elttype = arguments.first.mtype var nclass = self.get_class("NativeArray") - var recv = "((struct instance_{nclass.c_name}*){arguments[0]})->values" + var recv = "((struct instance_{nclass.c_instance_name}*){arguments[0]})->values" if pname == "[]" then self.ret(self.new_expr("{recv}[{arguments[1]}]", ret_type.as(not null))) return else if pname == "[]=" then self.add("{recv}[{arguments[1]}]={arguments[2]};") return + else if pname == "length" then + self.ret(self.new_expr("((struct instance_{nclass.c_instance_name}*){arguments[0]})->length", ret_type.as(not null))) + return else if pname == "copy_to" then - var recv1 = "((struct instance_{nclass.c_name}*){arguments[1]})->values" + var recv1 = "((struct instance_{nclass.c_instance_name}*){arguments[1]})->values" self.add("memcpy({recv1}, {recv}, {arguments[2]}*sizeof({elttype.ctype}));") return end @@ -1460,6 +1669,30 @@ class SeparateCompilerVisitor end end +redef class MMethodDef + fun separate_runtime_function: AbstractRuntimeFunction + do + var res = self.separate_runtime_function_cache + if res == null then + res = new SeparateRuntimeFunction(self) + self.separate_runtime_function_cache = res + end + return res + end + private var separate_runtime_function_cache: nullable SeparateRuntimeFunction + + fun virtual_runtime_function: AbstractRuntimeFunction + do + var res = self.virtual_runtime_function_cache + if res == null then + res = new VirtualRuntimeFunction(self) + self.virtual_runtime_function_cache = res + end + return res + end + private var virtual_runtime_function_cache: nullable VirtualRuntimeFunction +end + # The C function associated to a methoddef separately compiled class SeparateRuntimeFunction super AbstractRuntimeFunction @@ -1481,8 +1714,8 @@ class SeparateRuntimeFunction var msignature = mmethoddef.msignature.resolve_for(mmethoddef.mclassdef.bound_mtype, mmethoddef.mclassdef.bound_mtype, mmethoddef.mclassdef.mmodule, true) - var sig = new Buffer - var comment = new Buffer + var sig = new FlatBuffer + var comment = new FlatBuffer var ret = msignature.return_mtype if ret != null then sig.append("{ret.ctype} ") @@ -1494,7 +1727,7 @@ class SeparateRuntimeFunction end sig.append(self.c_name) sig.append("({selfvar.mtype.ctype} {selfvar}") - comment.append("(self: {selfvar}") + comment.append("({selfvar}: {selfvar.mtype}") arguments.add(selfvar) for i in [0..msignature.arity[ do var mtype = msignature.mparameters[i].mtype @@ -1511,7 +1744,7 @@ class SeparateRuntimeFunction if ret != null then comment.append(": {ret}") end - compiler.header.add_decl("{sig};") + compiler.provide_declaration(self.c_name, "{sig};") v.add_decl("/* method {self} for {comment} */") v.add_decl("{sig} \{") @@ -1530,6 +1763,7 @@ class SeparateRuntimeFunction v.add("return {frame.returnvar.as(not null)};") end v.add("\}") + if not self.c_name.has_substring("VIRTUAL", 0) then compiler.names[self.c_name] = "{mmethoddef.mclassdef.mmodule.name}::{mmethoddef.mclassdef.mclass.name}::{mmethoddef.mproperty.name} ({mmethoddef.location.file.filename}:{mmethoddef.location.line_start})" end end @@ -1553,8 +1787,8 @@ class VirtualRuntimeFunction var frame = new Frame(v, mmethoddef, recv, arguments) v.frame = frame - var sig = new Buffer - var comment = new Buffer + var sig = new FlatBuffer + var comment = new FlatBuffer # Because the function is virtual, the signature must match the one of the original class var intromclassdef = self.mmethoddef.mproperty.intro.mclassdef @@ -1570,7 +1804,7 @@ class VirtualRuntimeFunction end sig.append(self.c_name) sig.append("({selfvar.mtype.ctype} {selfvar}") - comment.append("(self: {selfvar}") + comment.append("({selfvar}: {selfvar.mtype}") arguments.add(selfvar) for i in [0..msignature.arity[ do var mtype = msignature.mparameters[i].mtype @@ -1587,7 +1821,7 @@ class VirtualRuntimeFunction if ret != null then comment.append(": {ret}") end - compiler.header.add_decl("{sig};") + compiler.provide_declaration(self.c_name, "{sig};") v.add_decl("/* method {self} for {comment} */") v.add_decl("{sig} \{") @@ -1596,16 +1830,18 @@ class VirtualRuntimeFunction end frame.returnlabel = v.get_name("RET_LABEL") - if recv != arguments.first.mtype then - #print "{self} {recv} {arguments.first}" + var subret = v.call(mmethoddef, recv, arguments) + if ret != null then + assert subret != null + v.assign(frame.returnvar.as(not null), subret) end - mmethoddef.compile_inside_to_c(v, arguments) v.add("{frame.returnlabel.as(not null)}:;") if ret != null then v.add("return {frame.returnvar.as(not null)};") end v.add("\}") + if not self.c_name.has_substring("VIRTUAL", 0) then compiler.names[self.c_name] = "{mmethoddef.mclassdef.mmodule.name}::{mmethoddef.mclassdef.mclass.name}::{mmethoddef.mproperty.name} ({mmethoddef.location.file.filename}--{mmethoddef.location.line_start})" end # TODO ? @@ -1614,8 +1850,33 @@ end redef class MType fun const_color: String do return "COLOR_{c_name}" + + # C name of the instance type to use + fun c_instance_name: String do return c_name end +redef class MClassType + redef fun c_instance_name do return mclass.c_instance_name +end + +redef class MClass + # Extern classes use the C instance of kernel::Pointer + fun c_instance_name: String + do + if kind == extern_kind then + return "kernel__Pointer" + else return c_name + end +end + +interface PropertyLayoutElement end + redef class MProperty + super PropertyLayoutElement + fun const_color: String do return "COLOR_{c_name}" +end + +redef class MPropDef + super PropertyLayoutElement fun const_color: String do return "COLOR_{c_name}" end