1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
15 # Separate compilation of a Nit program
16 module separate_compiler
18 import abstract_compiler
20 import rapid_type_analysis
22 # Add separate compiler specific options
23 redef class ToolContext
25 var opt_separate
= new OptionBool("Use separate compilation", "--separate")
27 var opt_no_inline_intern
= new OptionBool("Do not inline call to intern methods", "--no-inline-intern")
28 # --no-union-attribute
29 var opt_no_union_attribute
= new OptionBool("Put primitive attibutes in a box instead of an union", "--no-union-attribute")
30 # --no-shortcut-equate
31 var opt_no_shortcut_equate
= new OptionBool("Always call == in a polymorphic way", "--no-shortcut-equal")
33 var opt_no_tag_primitives
= new OptionBool("Use only boxes for primitive types", "--no-tag-primitives")
35 # --colors-are-symbols
36 var opt_colors_are_symbols
= new OptionBool("Store colors as symbols (link-boost)", "--colors-are-symbols")
38 var opt_trampoline_call
= new OptionBool("Use an indirection when calling", "--trampoline-call")
40 var opt_guard_call
= new OptionBool("Guard VFT calls with a direct call", "--guard-call")
41 # --substitute-monomorph
42 var opt_substitute_monomorph
= new OptionBool("Replace monomorph trampoline with direct call (link-boost)", "--substitute-monomorph")
44 var opt_link_boost
= new OptionBool("Enable all link-boost optimizations", "--link-boost")
46 # --inline-coloring-numbers
47 var opt_inline_coloring_numbers
= new OptionBool("Inline colors and ids (semi-global)", "--inline-coloring-numbers")
48 # --inline-some-methods
49 var opt_inline_some_methods
= new OptionBool("Allow the separate compiler to inline some methods (semi-global)", "--inline-some-methods")
50 # --direct-call-monomorph
51 var opt_direct_call_monomorph
= new OptionBool("Allow the separate compiler to direct call monomorph sites (semi-global)", "--direct-call-monomorph")
52 # --direct-call-monomorph0
53 var opt_direct_call_monomorph0
= new OptionBool("Allow the separate compiler to direct call monomorph sites (semi-global)", "--direct-call-monomorph0")
55 var opt_skip_dead_methods
= new OptionBool("Do not compile dead methods (semi-global)", "--skip-dead-methods")
57 var opt_semi_global
= new OptionBool("Enable all semi-global optimizations", "--semi-global")
58 # --no-colo-dead-methods
59 var opt_colo_dead_methods
= new OptionBool("Force colorization of dead methods", "--colo-dead-methods")
61 var opt_tables_metrics
= new OptionBool("Enable static size measuring of tables used for vft, typing and resolution", "--tables-metrics")
63 var opt_type_poset
= new OptionBool("Build a poset of types to create more condensed tables.", "--type-poset")
68 self.option_context
.add_option
(self.opt_separate
)
69 self.option_context
.add_option
(self.opt_no_inline_intern
)
70 self.option_context
.add_option
(self.opt_no_union_attribute
)
71 self.option_context
.add_option
(self.opt_no_shortcut_equate
)
72 self.option_context
.add_option
(self.opt_no_tag_primitives
)
73 self.option_context
.add_option
(opt_colors_are_symbols
, opt_trampoline_call
, opt_guard_call
, opt_direct_call_monomorph0
, opt_substitute_monomorph
, opt_link_boost
)
74 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
)
75 self.option_context
.add_option
(self.opt_colo_dead_methods
)
76 self.option_context
.add_option
(self.opt_tables_metrics
)
77 self.option_context
.add_option
(self.opt_type_poset
)
80 redef fun process_options
(args
)
85 if tc
.opt_semi_global
.value
then
86 tc
.opt_inline_coloring_numbers
.value
= true
87 tc
.opt_inline_some_methods
.value
= true
88 tc
.opt_direct_call_monomorph
.value
= true
89 tc
.opt_skip_dead_methods
.value
= true
91 if tc
.opt_link_boost
.value
then
92 tc
.opt_colors_are_symbols
.value
= true
93 tc
.opt_substitute_monomorph
.value
= true
95 if tc
.opt_substitute_monomorph
.value
then
96 tc
.opt_trampoline_call
.value
= true
100 var separate_compiler_phase
= new SeparateCompilerPhase(self, null)
103 class SeparateCompilerPhase
105 redef fun process_mainmodule
(mainmodule
, given_mmodules
) do
106 if not toolcontext
.opt_separate
.value
then return
108 var modelbuilder
= toolcontext
.modelbuilder
109 var analysis
= modelbuilder
.do_rapid_type_analysis
(mainmodule
)
110 modelbuilder
.run_separate_compiler
(mainmodule
, analysis
)
114 redef class ModelBuilder
115 fun run_separate_compiler
(mainmodule
: MModule, runtime_type_analysis
: nullable RapidTypeAnalysis)
118 self.toolcontext
.info
("*** GENERATING C ***", 1)
120 var compiler
= new SeparateCompiler(mainmodule
, self, runtime_type_analysis
)
121 compiler
.do_compilation
122 compiler
.display_stats
125 self.toolcontext
.info
("*** END GENERATING C: {time1-time0} ***", 2)
126 write_and_make
(compiler
)
129 # Count number of invocations by VFT
130 private var nb_invok_by_tables
= 0
131 # Count number of invocations by direct call
132 private var nb_invok_by_direct
= 0
133 # Count number of invocations by inlining
134 private var nb_invok_by_inline
= 0
137 # Singleton that store the knowledge about the separate compilation process
138 class SeparateCompiler
139 super AbstractCompiler
141 redef type VISITOR: SeparateCompilerVisitor
143 # The result of the RTA (used to know live types and methods)
144 var runtime_type_analysis
: nullable RapidTypeAnalysis
146 private var undead_types
: Set[MType] = new HashSet[MType]
147 private var live_unresolved_types
: Map[MClassDef, Set[MType]] = new HashMap[MClassDef, HashSet[MType]]
149 private var type_ids
: Map[MType, Int] is noinit
150 private var type_colors
: Map[MType, Int] is noinit
151 private var opentype_colors
: Map[MType, Int] is noinit
154 var file
= new_file
("nit.common")
155 self.header
= new CodeWriter(file
)
156 self.compile_box_kinds
159 redef fun do_compilation
162 compiler
.compile_header
164 var c_name
= mainmodule
.c_name
166 # compile class structures
167 modelbuilder
.toolcontext
.info
("Property coloring", 2)
168 compiler
.new_file
("{c_name}.classes")
169 compiler
.do_property_coloring
170 compiler
.compile_class_infos
171 for m
in mainmodule
.in_importation
.greaters
do
172 for mclass
in m
.intro_mclasses
do
173 #if mclass.kind == abstract_kind or mclass.kind == interface_kind then continue
174 compiler
.compile_class_to_c
(mclass
)
178 # The main function of the C
179 compiler
.new_file
("{c_name}.main")
180 compiler
.compile_nitni_global_ref_functions
181 compiler
.compile_main_function
182 compiler
.compile_finalizer_function
183 compiler
.link_mmethods
186 for m
in mainmodule
.in_importation
.greaters
do
187 modelbuilder
.toolcontext
.info
("Generate C for module {m.full_name}", 2)
188 compiler
.new_file
("{m.c_name}.sep")
189 compiler
.compile_module_to_c
(m
)
192 # compile live & cast type structures
193 modelbuilder
.toolcontext
.info
("Type coloring", 2)
194 compiler
.new_file
("{c_name}.types")
195 compiler
.compile_types
198 # Color and compile type structures and cast information
203 var mtypes
= compiler
.do_type_coloring
205 compiler
.compile_type_to_c
(t
)
207 # compile remaining types structures (useless but needed for the symbol resolution at link-time)
208 for t
in compiler
.undead_types
do
209 if mtypes
.has
(t
) then continue
210 compiler
.compile_type_to_c
(t
)
215 redef fun compile_header_structs
do
216 self.header
.add_decl
("typedef void(*nitmethod_t)(void); /* general C type representing a Nit method. */")
217 self.compile_header_attribute_structs
218 self.header
.add_decl
("struct class \{ int box_kind; nitmethod_t vft[]; \}; /* general C type representing a Nit class. */")
220 # With resolution_table_table, all live type resolution are stored in a big table: resolution_table
221 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. */")
222 self.header
.add_decl
("struct instance \{ const struct type *type; const struct class *class; nitattribute_t attrs[]; \}; /* general C type representing a Nit instance. */")
223 self.header
.add_decl
("struct types \{ int dummy; const struct type *types[]; \}; /* a list types (used for vts, fts and unresolved lists). */")
224 self.header
.add_decl
("typedef struct instance val; /* general C type representing a Nit instance. */")
226 if not modelbuilder
.toolcontext
.opt_no_tag_primitives
.value
then
227 self.header
.add_decl
("extern const struct class *class_info[];")
228 self.header
.add_decl
("extern const struct type *type_info[];")
232 fun compile_header_attribute_structs
234 if modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
235 self.header
.add_decl
("typedef void* nitattribute_t; /* general C type representing a Nit attribute. */")
237 self.header
.add_decl
("typedef union \{")
238 self.header
.add_decl
("void* val;")
239 for c
, v
in self.box_kinds
do
240 var t
= c
.mclass_type
242 # `Pointer` reuse the `val` field
243 if t
.mclass
.name
== "Pointer" then continue
245 self.header
.add_decl
("{t.ctype_extern} {t.ctypename};")
247 self.header
.add_decl
("\} nitattribute_t; /* general C type representing a Nit attribute. */")
251 fun compile_box_kinds
253 # Collect all bas box class
254 # FIXME: this is not completely fine with a separate compilation scheme
255 for classname
in ["Int", "Bool", "Byte", "Char", "Float", "NativeString", "Pointer"] do
256 var classes
= self.mainmodule
.model
.get_mclasses_by_name
(classname
)
257 if classes
== null then continue
258 assert classes
.length
== 1 else print classes
.join
(", ")
259 self.box_kinds
[classes
.first
] = self.box_kinds
.length
+ 1
263 var box_kinds
= new HashMap[MClass, Int]
265 fun box_kind_of
(mclass
: MClass): Int
267 #var pointer_type = self.mainmodule.pointer_type
268 #if mclass.mclass_type.ctype == "val*" or mclass.mclass_type.is_subtype(self.mainmodule, mclass.mclass_type pointer_type) then
269 if mclass
.mclass_type
.ctype_extern
== "val*" then
271 else if mclass
.kind
== extern_kind
and mclass
.name
!= "NativeString" then
272 return self.box_kinds
[self.mainmodule
.pointer_type
.mclass
]
274 return self.box_kinds
[mclass
]
279 fun compile_color_consts
(colors
: Map[Object, Int]) do
281 for m
, c
in colors
do
282 compile_color_const
(v
, m
, c
)
286 fun compile_color_const
(v
: SeparateCompilerVisitor, m
: Object, color
: Int) do
287 if color_consts_done
.has
(m
) then return
288 if m
isa MEntity then
289 if modelbuilder
.toolcontext
.opt_inline_coloring_numbers
.value
then
290 self.provide_declaration
(m
.const_color
, "#define {m.const_color} {color}")
291 else if not modelbuilder
.toolcontext
.opt_colors_are_symbols
.value
or not v
.compiler
.target_platform
.supports_linker_script
then
292 self.provide_declaration
(m
.const_color
, "extern const int {m.const_color};")
293 v
.add
("const int {m.const_color} = {color};")
295 # The color 'C' is the ``address'' of a false static variable 'XC'
296 self.provide_declaration
(m
.const_color
, "#define {m.const_color} ((long)&X{m.const_color})\nextern const void X{m.const_color};")
297 if color
== -1 then color
= 0 # Symbols cannot be negative, so just use 0 for dead things
298 # Teach the linker that the address of 'XC' is `color`.
299 linker_script
.add
("X{m.const_color} = {color};")
304 color_consts_done
.add
(m
)
307 private var color_consts_done
= new HashSet[Object]
309 # The conflict graph of classes used for coloration
310 var class_conflict_graph
: POSetConflictGraph[MClass] is noinit
312 # colorize classe properties
313 fun do_property_coloring
do
315 var rta
= runtime_type_analysis
318 var mclasses
= mainmodule
.flatten_mclass_hierarchy
319 class_conflict_graph
= mclasses
.to_conflict_graph
321 # Prepare to collect elements to color and build layout with
322 var mmethods
= new HashMap[MClass, Set[PropertyLayoutElement]]
323 var mattributes
= new HashMap[MClass, Set[MAttribute]]
325 # The dead methods and super-call, still need to provide a dead color symbol
326 var dead_methods
= new Array[PropertyLayoutElement]
328 for mclass
in mclasses
do
329 mmethods
[mclass
] = new HashSet[PropertyLayoutElement]
330 mattributes
[mclass
] = new HashSet[MAttribute]
333 # Pre-collect known live things
335 for m
in rta
.live_methods
do
336 mmethods
[m
.intro_mclassdef
.mclass
].add m
338 for m
in rta
.live_super_sends
do
339 var mclass
= m
.mclassdef
.mclass
340 mmethods
[mclass
].add m
344 for m
in mainmodule
.in_importation
.greaters
do for cd
in m
.mclassdefs
do
345 var mclass
= cd
.mclass
346 # Collect methods ad attributes
347 for p
in cd
.intro_mproperties
do
348 if p
isa MMethod then
350 mmethods
[mclass
].add p
351 else if not rta
.live_methods
.has
(p
) then
354 else if p
isa MAttribute then
355 mattributes
[mclass
].add p
359 # Collect all super calls (dead or not)
360 for mpropdef
in cd
.mpropdefs
do
361 if not mpropdef
isa MMethodDef then continue
362 if mpropdef
.has_supercall
then
364 mmethods
[mclass
].add mpropdef
365 else if not rta
.live_super_sends
.has
(mpropdef
) then
366 dead_methods
.add mpropdef
373 var meth_colorer
= new POSetGroupColorer[MClass, PropertyLayoutElement](class_conflict_graph
, mmethods
)
374 var method_colors
= meth_colorer
.colors
375 compile_color_consts
(method_colors
)
377 # give null color to dead methods and supercalls
378 for mproperty
in dead_methods
do compile_color_const
(new_visitor
, mproperty
, -1)
380 # attribute coloration
381 var attr_colorer
= new POSetGroupColorer[MClass, MAttribute](class_conflict_graph
, mattributes
)
382 var attr_colors
= attr_colorer
.colors
#ize(poset, mattributes)
383 compile_color_consts
(attr_colors
)
385 # Build method and attribute tables
386 method_tables
= new HashMap[MClass, Array[nullable MPropDef]]
387 attr_tables
= new HashMap[MClass, Array[nullable MProperty]]
388 for mclass
in mclasses
do
389 if not mclass
.has_new_factory
and (mclass
.kind
== abstract_kind
or mclass
.kind
== interface_kind
) then continue
390 if rta
!= null and not rta
.live_classes
.has
(mclass
) then continue
392 var mtype
= mclass
.intro
.bound_mtype
394 # Resolve elements in the layout to get the final table
395 var meth_layout
= meth_colorer
.build_layout
(mclass
)
396 var meth_table
= new Array[nullable MPropDef].with_capacity
(meth_layout
.length
)
397 method_tables
[mclass
] = meth_table
398 for e
in meth_layout
do
401 else if e
isa MMethod then
402 # Standard method call of `e`
403 meth_table
.add e
.lookup_first_definition
(mainmodule
, mtype
)
404 else if e
isa MMethodDef then
405 # Super-call in the methoddef `e`
406 meth_table
.add e
.lookup_next_definition
(mainmodule
, mtype
)
412 # Do not need to resolve attributes as only the position is used
413 attr_tables
[mclass
] = attr_colorer
.build_layout
(mclass
)
419 # colorize live types of the program
420 private fun do_type_coloring
: Collection[MType] do
421 # Collect types to colorize
422 var live_types
= runtime_type_analysis
.live_types
423 var live_cast_types
= runtime_type_analysis
.live_cast_types
425 var res
= new HashSet[MType]
426 res
.add_all live_types
427 res
.add_all live_cast_types
429 if modelbuilder
.toolcontext
.opt_type_poset
.value
then
430 # Compute colors with a type poset
431 var poset
= poset_from_mtypes
(live_types
, live_cast_types
)
432 var colorer
= new POSetColorer[MType]
433 colorer
.colorize
(poset
)
434 type_ids
= colorer
.ids
435 type_colors
= colorer
.colors
436 type_tables
= build_type_tables
(poset
)
438 # Compute colors using the class poset
439 # Faster to compute but the number of holes can degenerate
440 compute_type_test_layouts
(live_types
, live_cast_types
)
442 type_ids
= new HashMap[MType, Int]
443 for x
in res
do type_ids
[x
] = type_ids
.length
+ 1
446 # VT and FT are stored with other unresolved types in the big resolution_tables
447 self.compute_resolution_tables
(live_types
)
452 private fun poset_from_mtypes
(mtypes
, cast_types
: Set[MType]): POSet[MType] do
453 var poset
= new POSet[MType]
455 # Instead of doing the full matrix mtypes X cast_types,
456 # a grouping is done by the base classes of the type so
457 # that we compare only types whose base classes are in inheritance.
459 var mtypes_by_class
= new MultiHashMap[MClass, MType]
461 var c
= e
.undecorate
.as(MClassType).mclass
462 mtypes_by_class
[c
].add
(e
)
466 var casttypes_by_class
= new MultiHashMap[MClass, MType]
467 for e
in cast_types
do
468 var c
= e
.undecorate
.as(MClassType).mclass
469 casttypes_by_class
[c
].add
(e
)
473 for c1
, ts1
in mtypes_by_class
do
474 for c2
in c1
.in_hierarchy
(mainmodule
).greaters
do
475 var ts2
= casttypes_by_class
[c2
]
478 if e
== o
then continue
479 if e
.is_subtype
(mainmodule
, null, o
) then
490 fun build_type_tables
(mtypes
: POSet[MType]): Map[MType, Array[nullable MType]] do
491 var tables
= new HashMap[MType, Array[nullable MType]]
492 for mtype
in mtypes
do
493 var table
= new Array[nullable MType]
494 for sup
in mtypes
[mtype
].greaters
do
495 var color
= type_colors
[sup
]
496 if table
.length
<= color
then
497 for i
in [table
.length
.. color
[ do
503 tables
[mtype
] = table
509 private fun compute_type_test_layouts
(mtypes
: Set[MClassType], cast_types
: Set[MType]) do
510 # Group cast_type by their classes
511 var bucklets
= new HashMap[MClass, Set[MType]]
512 for e
in cast_types
do
513 var c
= e
.undecorate
.as(MClassType).mclass
514 if not bucklets
.has_key
(c
) then
515 bucklets
[c
] = new HashSet[MType]
520 # Colorize cast_types from the class hierarchy
521 var colorer
= new POSetGroupColorer[MClass, MType](class_conflict_graph
, bucklets
)
522 type_colors
= colorer
.colors
524 var layouts
= new HashMap[MClass, Array[nullable MType]]
525 for c
in runtime_type_analysis
.live_classes
do
526 layouts
[c
] = colorer
.build_layout
(c
)
529 # Build the table for each live type
531 # A live type use the layout of its class
533 var layout
= layouts
[c
]
534 var table
= new Array[nullable MType].with_capacity
(layout
.length
)
535 type_tables
[t
] = table
537 # For each potential super-type in the layout
541 else if t
.is_subtype
(mainmodule
, null, sup
) then
550 # resolution_tables is used to perform a type resolution at runtime in O(1)
551 private fun compute_resolution_tables
(mtypes
: Set[MType]) do
552 # During the visit of the body of classes, live_unresolved_types are collected
554 # Collect all live_unresolved_types (visited in the body of classes)
556 # Determinate fo each livetype what are its possible requested anchored types
557 var mtype2unresolved
= new HashMap[MClass, Set[MType]]
558 for mtype
in self.runtime_type_analysis
.live_types
do
559 var mclass
= mtype
.mclass
560 var set
= mtype2unresolved
.get_or_null
(mclass
)
562 set
= new HashSet[MType]
563 mtype2unresolved
[mclass
] = set
565 for cd
in mtype
.collect_mclassdefs
(self.mainmodule
) do
566 if self.live_unresolved_types
.has_key
(cd
) then
567 set
.add_all
(self.live_unresolved_types
[cd
])
572 # Compute the table layout with the prefered method
573 var colorer
= new BucketsColorer[MClass, MType]
575 opentype_colors
= colorer
.colorize
(mtype2unresolved
)
576 resolution_tables
= self.build_resolution_tables
(self.runtime_type_analysis
.live_types
, mtype2unresolved
)
578 # Compile a C constant for each collected unresolved type.
579 # Either to a color, or to -1 if the unresolved type is dead (no live receiver can require it)
580 var all_unresolved
= new HashSet[MType]
581 for t
in self.live_unresolved_types
.values
do
582 all_unresolved
.add_all
(t
)
584 var all_unresolved_types_colors
= new HashMap[MType, Int]
585 for t
in all_unresolved
do
586 if opentype_colors
.has_key
(t
) then
587 all_unresolved_types_colors
[t
] = opentype_colors
[t
]
589 all_unresolved_types_colors
[t
] = -1
592 self.compile_color_consts
(all_unresolved_types_colors
)
595 #for k, v in unresolved_types_tables.as(not null) do
596 # print "{k}: {v.join(", ")}"
601 fun build_resolution_tables
(elements
: Set[MClassType], map
: Map[MClass, Set[MType]]): Map[MClassType, Array[nullable MType]] do
602 var tables
= new HashMap[MClassType, Array[nullable MType]]
603 for mclasstype
in elements
do
604 var mtypes
= map
[mclasstype
.mclass
]
605 var table
= new Array[nullable MType]
606 for mtype
in mtypes
do
607 var color
= opentype_colors
[mtype
]
608 if table
.length
<= color
then
609 for i
in [table
.length
.. color
[ do
615 tables
[mclasstype
] = table
620 # Separately compile all the method definitions of the module
621 fun compile_module_to_c
(mmodule
: MModule)
623 var old_module
= self.mainmodule
624 self.mainmodule
= mmodule
625 for cd
in mmodule
.mclassdefs
do
626 for pd
in cd
.mpropdefs
do
627 if not pd
isa MMethodDef then continue
628 if pd
.msignature
== null then continue # Skip broken method
629 var rta
= runtime_type_analysis
630 if modelbuilder
.toolcontext
.opt_skip_dead_methods
.value
and rta
!= null and not rta
.live_methoddefs
.has
(pd
) then continue
631 #print "compile {pd} @ {cd} @ {mmodule}"
632 var r
= pd
.separate_runtime_function
634 var r2
= pd
.virtual_runtime_function
635 if r2
!= r
then r2
.compile_to_c
(self)
637 # Generate trampolines
638 if modelbuilder
.toolcontext
.opt_trampoline_call
.value
then
639 r2
.compile_trampolines
(self)
643 self.mainmodule
= old_module
646 # Process all introduced methods and compile some linking information (if needed)
649 if not modelbuilder
.toolcontext
.opt_substitute_monomorph
.value
and not modelbuilder
.toolcontext
.opt_guard_call
.value
then return
651 for mmodule
in mainmodule
.in_importation
.greaters
do
652 for cd
in mmodule
.mclassdefs
do
653 for m
in cd
.intro_mproperties
do
654 if not m
isa MMethod then continue
661 # Compile some linking information (if needed)
662 fun link_mmethod
(m
: MMethod)
664 var n2
= "CALL_" + m
.const_color
666 # Replace monomorphic call by a direct call to the virtual implementation
667 var md
= is_monomorphic
(m
)
669 linker_script
.add
("{n2} = {md.virtual_runtime_function.c_name};")
672 # If opt_substitute_monomorph then a trampoline is used, else a weak symbol is used
673 if modelbuilder
.toolcontext
.opt_guard_call
.value
then
674 var r
= m
.intro
.virtual_runtime_function
675 provide_declaration
(n2
, "{r.c_ret} {n2}{r.c_sig} __attribute__((weak));")
679 # The single mmethodef called in case of monomorphism.
680 # Returns nul if dead or polymorphic.
681 fun is_monomorphic
(m
: MMethod): nullable MMethodDef
683 var rta
= runtime_type_analysis
685 # Without RTA, monomorphic means alone (uniq name)
686 if m
.mpropdefs
.length
== 1 then
687 return m
.mpropdefs
.first
692 # With RTA, monomorphic means only live methoddef
693 var res
: nullable MMethodDef = null
694 for md
in m
.mpropdefs
do
695 if rta
.live_methoddefs
.has
(md
) then
696 if res
!= null then return null
704 # Globaly compile the type structure of a live type
705 fun compile_type_to_c
(mtype
: MType)
707 assert not mtype
.need_anchor
708 var is_live
= mtype
isa MClassType and runtime_type_analysis
.live_types
.has
(mtype
)
709 var is_cast_live
= runtime_type_analysis
.live_cast_types
.has
(mtype
)
710 var c_name
= mtype
.c_name
711 var v
= new SeparateCompilerVisitor(self)
712 v
.add_decl
("/* runtime type {mtype} */")
714 # extern const struct type_X
715 self.provide_declaration
("type_{c_name}", "extern const struct type type_{c_name};")
717 # const struct type_X
718 v
.add_decl
("const struct type type_{c_name} = \{")
720 # type id (for cast target)
722 v
.add_decl
("{type_ids[mtype]},")
724 v
.add_decl
("-1, /*CAST DEAD*/")
728 v
.add_decl
("\"{mtype}\
", /* class_name_string */")
730 # type color (for cast target)
732 v
.add_decl
("{type_colors[mtype]},")
734 v
.add_decl
("-1, /*CAST DEAD*/")
738 if mtype
isa MNullableType then
744 # resolution table (for receiver)
746 var mclass_type
= mtype
.undecorate
747 assert mclass_type
isa MClassType
748 if resolution_tables
[mclass_type
].is_empty
then
749 v
.add_decl
("NULL, /*NO RESOLUTIONS*/")
751 compile_type_resolution_table
(mtype
)
752 v
.require_declaration
("resolution_table_{c_name}")
753 v
.add_decl
("&resolution_table_{c_name},")
756 v
.add_decl
("NULL, /*DEAD*/")
759 # cast table (for receiver)
761 v
.add_decl
("{self.type_tables[mtype].length},")
763 for stype
in self.type_tables
[mtype
] do
764 if stype
== null then
765 v
.add_decl
("-1, /* empty */")
767 v
.add_decl
("{type_ids[stype]}, /* {stype} */")
772 # Use -1 to indicate dead type, the info is used by --hardening
773 v
.add_decl
("-1, \{\}, /*DEAD TYPE*/")
778 fun compile_type_resolution_table
(mtype
: MType) do
780 var mclass_type
= mtype
.undecorate
.as(MClassType)
782 # extern const struct resolution_table_X resolution_table_X
783 self.provide_declaration
("resolution_table_{mtype.c_name}", "extern const struct types resolution_table_{mtype.c_name};")
785 # const struct fts_table_X fts_table_X
787 v
.add_decl
("const struct types resolution_table_{mtype.c_name} = \{")
788 v
.add_decl
("0, /* dummy */")
790 for t
in self.resolution_tables
[mclass_type
] do
792 v
.add_decl
("NULL, /* empty */")
794 # The table stores the result of the type resolution
795 # Therefore, for a receiver `mclass_type`, and a unresolved type `t`
796 # the value stored is tv.
797 var tv
= t
.resolve_for
(mclass_type
, mclass_type
, self.mainmodule
, true)
798 # FIXME: What typeids means here? How can a tv not be live?
799 if type_ids
.has_key
(tv
) then
800 v
.require_declaration
("type_{tv.c_name}")
801 v
.add_decl
("&type_{tv.c_name}, /* {t}: {tv} */")
803 v
.add_decl
("NULL, /* empty ({t}: {tv} not a live type) */")
811 # Globally compile the table of the class mclass
812 # In a link-time optimisation compiler, tables are globally computed
813 # In a true separate compiler (a with dynamic loading) you cannot do this unfortnally
814 fun compile_class_to_c
(mclass
: MClass)
816 var mtype
= mclass
.intro
.bound_mtype
817 var c_name
= mclass
.c_name
821 var rta
= runtime_type_analysis
822 var is_dead
= rta
!= null and not rta
.live_classes
.has
(mclass
) and not mtype
.is_c_primitive
and mclass
.name
!= "NativeArray" and mclass
.name
!= "Pointer"
824 v
.add_decl
("/* runtime class {c_name} */")
828 self.provide_declaration
("class_{c_name}", "extern const struct class class_{c_name};")
829 v
.add_decl
("const struct class class_{c_name} = \{")
830 v
.add_decl
("{self.box_kind_of(mclass)}, /* box_kind */")
832 var vft
= self.method_tables
.get_or_null
(mclass
)
833 if vft
!= null then for i
in [0 .. vft
.length
[ do
834 var mpropdef
= vft
[i
]
835 if mpropdef
== null then
836 v
.add_decl
("NULL, /* empty */")
838 assert mpropdef
isa MMethodDef
839 if rta
!= null and not rta
.live_methoddefs
.has
(mpropdef
) then
840 v
.add_decl
("NULL, /* DEAD {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
843 var rf
= mpropdef
.virtual_runtime_function
844 v
.require_declaration
(rf
.c_name
)
845 v
.add_decl
("(nitmethod_t){rf.c_name}, /* pointer to {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
852 if mtype
.is_c_primitive
or mtype
.mclass
.name
== "Pointer" then
853 # Is a primitive type or the Pointer class, not any other extern class
855 if mtype
.is_tagged
then return
857 #Build instance struct
858 self.header
.add_decl
("struct instance_{c_name} \{")
859 self.header
.add_decl
("const struct type *type;")
860 self.header
.add_decl
("const struct class *class;")
861 self.header
.add_decl
("{mtype.ctype_extern} value;")
862 self.header
.add_decl
("\};")
864 if not rta
.live_types
.has
(mtype
) and mtype
.mclass
.name
!= "Pointer" then return
867 self.provide_declaration
("BOX_{c_name}", "val* BOX_{c_name}({mtype.ctype_extern});")
868 v
.add_decl
("/* allocate {mtype} */")
869 v
.add_decl
("val* BOX_{mtype.c_name}({mtype.ctype_extern} value) \{")
870 v
.add
("struct instance_{c_name}*res = nit_alloc(sizeof(struct instance_{c_name}));")
871 v
.compiler
.undead_types
.add
(mtype
)
872 v
.require_declaration
("type_{c_name}")
873 v
.add
("res->type = &type_{c_name};")
874 v
.require_declaration
("class_{c_name}")
875 v
.add
("res->class = &class_{c_name};")
876 v
.add
("res->value = value;")
877 v
.add
("return (val*)res;")
880 if mtype
.mclass
.name
!= "Pointer" then return
883 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
884 v
.add_decl
("/* allocate {mtype} */")
885 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
887 v
.add_abort
("{mclass} is DEAD")
889 var res
= v
.new_named_var
(mtype
, "self")
891 v
.add
("{res} = nit_alloc(sizeof(struct instance_{mtype.c_name}));")
892 v
.add
("{res}->type = type;")
893 hardening_live_type
(v
, "type")
894 v
.require_declaration
("class_{c_name}")
895 v
.add
("{res}->class = &class_{c_name};")
896 v
.add
("((struct instance_{mtype.c_name}*){res})->value = NULL;")
897 v
.add
("return {res};")
901 else if mclass
.name
== "NativeArray" then
902 #Build instance struct
903 self.header
.add_decl
("struct instance_{c_name} \{")
904 self.header
.add_decl
("const struct type *type;")
905 self.header
.add_decl
("const struct class *class;")
906 # NativeArrays are just a instance header followed by a length and an array of values
907 self.header
.add_decl
("int length;")
908 self.header
.add_decl
("val* values[0];")
909 self.header
.add_decl
("\};")
912 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(int length, const struct type* type);")
913 v
.add_decl
("/* allocate {mtype} */")
914 v
.add_decl
("{mtype.ctype} NEW_{c_name}(int length, const struct type* type) \{")
915 var res
= v
.get_name
("self")
916 v
.add_decl
("struct instance_{c_name} *{res};")
917 var mtype_elt
= mtype
.arguments
.first
918 v
.add
("{res} = nit_alloc(sizeof(struct instance_{c_name}) + length*sizeof({mtype_elt.ctype}));")
919 v
.add
("{res}->type = type;")
920 hardening_live_type
(v
, "type")
921 v
.require_declaration
("class_{c_name}")
922 v
.add
("{res}->class = &class_{c_name};")
923 v
.add
("{res}->length = length;")
924 v
.add
("return (val*){res};")
927 else if mtype
.mclass
.kind
== extern_kind
and mtype
.mclass
.name
!= "NativeString" then
928 # Is an extern class (other than Pointer and NativeString)
929 # Pointer is caught in a previous `if`, and NativeString is internal
931 var pointer_type
= mainmodule
.pointer_type
933 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
934 v
.add_decl
("/* allocate {mtype} */")
935 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
937 v
.add_abort
("{mclass} is DEAD")
939 var res
= v
.new_named_var
(mtype
, "self")
941 v
.add
("{res} = nit_alloc(sizeof(struct instance_{pointer_type.c_name}));")
942 v
.add
("{res}->type = type;")
943 hardening_live_type
(v
, "type")
944 v
.require_declaration
("class_{c_name}")
945 v
.add
("{res}->class = &class_{c_name};")
946 v
.add
("((struct instance_{pointer_type.c_name}*){res})->value = NULL;")
947 v
.add
("return {res};")
954 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
955 v
.add_decl
("/* allocate {mtype} */")
956 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
958 v
.add_abort
("{mclass} is DEAD")
960 var res
= v
.new_named_var
(mtype
, "self")
962 var attrs
= self.attr_tables
.get_or_null
(mclass
)
963 if attrs
== null then
964 v
.add
("{res} = nit_alloc(sizeof(struct instance));")
966 v
.add
("{res} = nit_alloc(sizeof(struct instance) + {attrs.length}*sizeof(nitattribute_t));")
968 v
.add
("{res}->type = type;")
969 hardening_live_type
(v
, "type")
970 v
.require_declaration
("class_{c_name}")
971 v
.add
("{res}->class = &class_{c_name};")
972 if attrs
!= null then
973 self.generate_init_attr
(v
, res
, mtype
)
976 v
.add
("return {res};")
981 # Compile structures used to map tagged primitive values to their classes and types.
982 # This method also determines which class will be tagged.
983 fun compile_class_infos
985 if modelbuilder
.toolcontext
.opt_no_tag_primitives
.value
then return
987 # Note: if you change the tagging scheme, do not forget to update
988 # `autobox` and `extract_tag`
989 var class_info
= new Array[nullable MClass].filled_with
(null, 4)
990 for t
in box_kinds
.keys
do
991 # Note: a same class can be associated to multiple slots if one want to
992 # use some Huffman coding.
993 if t
.name
== "Int" then
995 else if t
.name
== "Char" then
997 else if t
.name
== "Bool" then
1002 t
.mclass_type
.is_tagged
= true
1005 # Compile the table for classes. The tag is used as an index
1006 var v
= self.new_visitor
1007 v
.add_decl
"const struct class *class_info[4] = \{"
1008 for t
in class_info
do
1012 var s
= "class_{t.c_name}"
1013 v
.require_declaration
(s
)
1019 # Compile the table for types. The tag is used as an index
1020 v
.add_decl
"const struct type *type_info[4] = \{"
1021 for t
in class_info
do
1025 var s
= "type_{t.c_name}"
1026 undead_types
.add
(t
.mclass_type
)
1027 v
.require_declaration
(s
)
1034 # Add a dynamic test to ensure that the type referenced by `t` is a live type
1035 fun hardening_live_type
(v
: VISITOR, t
: String)
1037 if not v
.compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
1038 v
.add
("if({t} == NULL) \{")
1039 v
.add_abort
("type null")
1041 v
.add
("if({t}->table_size < 0) \{")
1042 v
.add
("PRINT_ERROR(\"Insantiation of a dead
type: %s\\n\
", {t}->name);")
1043 v
.add_abort
("type dead")
1047 redef fun new_visitor
do return new SeparateCompilerVisitor(self)
1051 private var type_tables
: Map[MType, Array[nullable MType]] = new HashMap[MType, Array[nullable MType]]
1052 private var resolution_tables
: Map[MClassType, Array[nullable MType]] = new HashMap[MClassType, Array[nullable MType]]
1053 protected var method_tables
: Map[MClass, Array[nullable MPropDef]] = new HashMap[MClass, Array[nullable MPropDef]]
1054 protected var attr_tables
: Map[MClass, Array[nullable MProperty]] = new HashMap[MClass, Array[nullable MProperty]]
1056 redef fun display_stats
1059 if self.modelbuilder
.toolcontext
.opt_tables_metrics
.value
then
1062 if self.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1063 display_isset_checks
1065 var tc
= self.modelbuilder
.toolcontext
1066 tc
.info
("# implementation of method invocation",2)
1067 var nb_invok_total
= modelbuilder
.nb_invok_by_tables
+ modelbuilder
.nb_invok_by_direct
+ modelbuilder
.nb_invok_by_inline
1068 tc
.info
("total number of invocations: {nb_invok_total}",2)
1069 tc
.info
("invocations by VFT send: {modelbuilder.nb_invok_by_tables} ({div(modelbuilder.nb_invok_by_tables,nb_invok_total)}%)",2)
1070 tc
.info
("invocations by direct call: {modelbuilder.nb_invok_by_direct} ({div(modelbuilder.nb_invok_by_direct,nb_invok_total)}%)",2)
1071 tc
.info
("invocations by inlining: {modelbuilder.nb_invok_by_inline} ({div(modelbuilder.nb_invok_by_inline,nb_invok_total)}%)",2)
1076 print
"# size of subtyping tables"
1077 print
"\ttotal \tholes"
1080 for t
, table
in type_tables
do
1081 total
+= table
.length
1082 for e
in table
do if e
== null then holes
+= 1
1084 print
"\t{total}\t{holes}"
1086 print
"# size of resolution tables"
1087 print
"\ttotal \tholes"
1090 for t
, table
in resolution_tables
do
1091 total
+= table
.length
1092 for e
in table
do if e
== null then holes
+= 1
1094 print
"\t{total}\t{holes}"
1096 print
"# size of methods tables"
1097 print
"\ttotal \tholes"
1100 for t
, table
in method_tables
do
1101 total
+= table
.length
1102 for e
in table
do if e
== null then holes
+= 1
1104 print
"\t{total}\t{holes}"
1106 print
"# size of attributes tables"
1107 print
"\ttotal \tholes"
1110 for t
, table
in attr_tables
do
1111 total
+= table
.length
1112 for e
in table
do if e
== null then holes
+= 1
1114 print
"\t{total}\t{holes}"
1117 protected var isset_checks_count
= 0
1118 protected var attr_read_count
= 0
1120 fun display_isset_checks
do
1121 print
"# total number of compiled attribute reads"
1122 print
"\t{attr_read_count}"
1123 print
"# total number of compiled isset-checks"
1124 print
"\t{isset_checks_count}"
1127 redef fun compile_nitni_structs
1129 self.header
.add_decl
"""
1130 struct nitni_instance \{
1131 struct nitni_instance *next,
1132 *prev; /* adjacent global references in global list */
1133 int count; /* number of time this global reference has been marked */
1134 struct instance *value;
1140 redef fun finalize_ffi_for_module
(mmodule
)
1142 var old_module
= self.mainmodule
1143 self.mainmodule
= mmodule
1145 self.mainmodule
= old_module
1149 # A visitor on the AST of property definition that generate the C code of a separate compilation process.
1150 class SeparateCompilerVisitor
1151 super AbstractCompilerVisitor
1153 redef type COMPILER: SeparateCompiler
1155 redef fun adapt_signature
(m
, args
)
1157 var msignature
= m
.msignature
.resolve_for
(m
.mclassdef
.bound_mtype
, m
.mclassdef
.bound_mtype
, m
.mclassdef
.mmodule
, true)
1158 var recv
= args
.first
1159 if recv
.mtype
.ctype
!= m
.mclassdef
.mclass
.mclass_type
.ctype
then
1160 args
.first
= self.autobox
(args
.first
, m
.mclassdef
.mclass
.mclass_type
)
1162 for i
in [0..msignature
.arity
[ do
1163 var t
= msignature
.mparameters
[i
].mtype
1164 if i
== msignature
.vararg_rank
then
1167 args
[i
+1] = self.autobox
(args
[i
+1], t
)
1171 redef fun unbox_signature_extern
(m
, args
)
1173 var msignature
= m
.msignature
.resolve_for
(m
.mclassdef
.bound_mtype
, m
.mclassdef
.bound_mtype
, m
.mclassdef
.mmodule
, true)
1174 if not m
.mproperty
.is_init
and m
.is_extern
then
1175 args
.first
= self.unbox_extern
(args
.first
, m
.mclassdef
.mclass
.mclass_type
)
1177 for i
in [0..msignature
.arity
[ do
1178 var t
= msignature
.mparameters
[i
].mtype
1179 if i
== msignature
.vararg_rank
then
1182 if m
.is_extern
then args
[i
+1] = self.unbox_extern
(args
[i
+1], t
)
1186 redef fun autobox
(value
, mtype
)
1188 if value
.mtype
== mtype
then
1190 else if not value
.mtype
.is_c_primitive
and not mtype
.is_c_primitive
then
1192 else if not value
.mtype
.is_c_primitive
then
1193 if mtype
.is_tagged
then
1194 if mtype
.name
== "Int" then
1195 return self.new_expr
("(long)({value})>>2", mtype
)
1196 else if mtype
.name
== "Char" then
1197 return self.new_expr
("(uint32_t)((long)({value})>>2)", mtype
)
1198 else if mtype
.name
== "Bool" then
1199 return self.new_expr
("(short int)((long)({value})>>2)", mtype
)
1204 return self.new_expr
("((struct instance_{mtype.c_name}*){value})->value; /* autounbox from {value.mtype} to {mtype} */", mtype
)
1205 else if not mtype
.is_c_primitive
then
1206 if value
.mtype
.is_tagged
then
1207 if value
.mtype
.name
== "Int" then
1208 return self.new_expr
("(val*)({value}<<2|1)", mtype
)
1209 else if value
.mtype
.name
== "Char" then
1210 return self.new_expr
("(val*)((long)({value})<<2|2)", mtype
)
1211 else if value
.mtype
.name
== "Bool" then
1212 return self.new_expr
("(val*)((long)({value})<<2|3)", mtype
)
1217 var valtype
= value
.mtype
.as(MClassType)
1218 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and mtype
.mclass
.name
!= "NativeString" then
1219 valtype
= compiler
.mainmodule
.pointer_type
1221 var res
= self.new_var
(mtype
)
1222 if compiler
.runtime_type_analysis
!= null and not compiler
.runtime_type_analysis
.live_types
.has
(valtype
) then
1223 self.add
("/*no autobox from {value.mtype} to {mtype}: {value.mtype} is not live! */")
1224 self.add
("PRINT_ERROR(\"Dead code executed
!\\n\
"); fatal_exit(1);")
1227 self.require_declaration
("BOX_{valtype.c_name}")
1228 self.add
("{res} = BOX_{valtype.c_name}({value}); /* autobox from {value.mtype} to {mtype} */")
1230 else if (value
.mtype
.ctype
== "void*" and mtype
.ctype
== "void*") or
1231 (value
.mtype
.ctype
== "char*" and mtype
.ctype
== "void*") or
1232 (value
.mtype
.ctype
== "void*" and mtype
.ctype
== "char*") then
1235 # Bad things will appen!
1236 var res
= self.new_var
(mtype
)
1237 self.add
("/* {res} left unintialized (cannot convert {value.mtype} to {mtype}) */")
1238 self.add
("PRINT_ERROR(\"Cast error
: Cannot cast
%s to
%s
.\\n\
", \"{value.mtype}\
", \"{mtype}\
"); fatal_exit(1);")
1243 redef fun unbox_extern
(value
, mtype
)
1245 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and
1246 mtype
.mclass
.name
!= "NativeString" then
1247 var pointer_type
= compiler
.mainmodule
.pointer_type
1248 var res
= self.new_var_extern
(mtype
)
1249 self.add
"{res} = ((struct instance_{pointer_type.c_name}*){value})->value; /* unboxing {value.mtype} */"
1256 redef fun box_extern
(value
, mtype
)
1258 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and
1259 mtype
.mclass
.name
!= "NativeString" then
1260 var valtype
= compiler
.mainmodule
.pointer_type
1261 var res
= self.new_var
(mtype
)
1262 if compiler
.runtime_type_analysis
!= null and not compiler
.runtime_type_analysis
.live_types
.has
(value
.mtype
.as(MClassType)) then
1263 self.add
("/*no boxing of {value.mtype}: {value.mtype} is not live! */")
1264 self.add
("PRINT_ERROR(\"Dead code executed
!\\n\
"); fatal_exit(1);")
1267 self.require_declaration
("BOX_{valtype.c_name}")
1268 self.add
("{res} = BOX_{valtype.c_name}({value}); /* boxing {value.mtype} */")
1269 self.require_declaration
("type_{mtype.c_name}")
1270 self.add
("{res}->type = &type_{mtype.c_name};")
1271 self.require_declaration
("class_{mtype.c_name}")
1272 self.add
("{res}->class = &class_{mtype.c_name};")
1279 # Returns a C expression containing the tag of the value as a long.
1281 # If the C expression is evaluated to 0, it means there is no tag.
1282 # Thus the expression can be used as a condition.
1283 fun extract_tag
(value
: RuntimeVariable): String
1285 assert not value
.mtype
.is_c_primitive
1286 return "((long){value}&3)" # Get the two low bits
1289 # Returns a C expression of the runtime class structure of the value.
1290 # The point of the method is to work also with primitive types.
1291 fun class_info
(value
: RuntimeVariable): String
1293 if not value
.mtype
.is_c_primitive
then
1294 if can_be_primitive
(value
) and not compiler
.modelbuilder
.toolcontext
.opt_no_tag_primitives
.value
then
1295 var tag
= extract_tag
(value
)
1296 return "({tag}?class_info[{tag}]:{value}->class)"
1298 return "{value}->class"
1300 compiler
.undead_types
.add
(value
.mtype
)
1301 self.require_declaration
("class_{value.mtype.c_name}")
1302 return "(&class_{value.mtype.c_name})"
1306 # Returns a C expression of the runtime type structure of the value.
1307 # The point of the method is to work also with primitive types.
1308 fun type_info
(value
: RuntimeVariable): String
1310 if not value
.mtype
.is_c_primitive
then
1311 if can_be_primitive
(value
) and not compiler
.modelbuilder
.toolcontext
.opt_no_tag_primitives
.value
then
1312 var tag
= extract_tag
(value
)
1313 return "({tag}?type_info[{tag}]:{value}->type)"
1315 return "{value}->type"
1317 compiler
.undead_types
.add
(value
.mtype
)
1318 self.require_declaration
("type_{value.mtype.c_name}")
1319 return "(&type_{value.mtype.c_name})"
1323 redef fun compile_callsite
(callsite
, args
)
1325 var rta
= compiler
.runtime_type_analysis
1326 # TODO: Inlining of new-style constructors with initializers
1327 if compiler
.modelbuilder
.toolcontext
.opt_direct_call_monomorph
.value
and rta
!= null and callsite
.mpropdef
.initializers
.is_empty
then
1328 var tgs
= rta
.live_targets
(callsite
)
1329 if tgs
.length
== 1 then
1330 return direct_call
(tgs
.first
, args
)
1333 # Shortcut intern methods as they are not usually redefinable
1334 if callsite
.mpropdef
.is_intern
and callsite
.mproperty
.name
!= "object_id" then
1335 # `object_id` is the only redefined intern method, so it can not be directly called.
1336 # TODO find a less ugly approach?
1337 return direct_call
(callsite
.mpropdef
, args
)
1342 # Fully and directly call a mpropdef
1344 # This method is used by `compile_callsite`
1345 private fun direct_call
(mpropdef
: MMethodDef, args
: Array[RuntimeVariable]): nullable RuntimeVariable
1347 var res0
= before_send
(mpropdef
.mproperty
, args
)
1348 var res
= call
(mpropdef
, mpropdef
.mclassdef
.bound_mtype
, args
)
1349 if res0
!= null then
1351 self.assign
(res0
, res
)
1354 add
("\}") # close the before_send
1357 redef fun send
(mmethod
, arguments
)
1359 if arguments
.first
.mcasttype
.is_c_primitive
then
1360 # In order to shortcut the primitive, we need to find the most specific method
1361 # Howverr, because of performance (no flattening), we always work on the realmainmodule
1362 var m
= self.compiler
.mainmodule
1363 self.compiler
.mainmodule
= self.compiler
.realmainmodule
1364 var res
= self.monomorphic_send
(mmethod
, arguments
.first
.mcasttype
, arguments
)
1365 self.compiler
.mainmodule
= m
1369 return table_send
(mmethod
, arguments
, mmethod
)
1372 # Handle common special cases before doing the effective method invocation
1373 # This methods handle the `==` and `!=` methods and the case of the null receiver.
1374 # Note: a { is open in the generated C, that enclose and protect the effective method invocation.
1375 # Client must not forget to close the } after them.
1377 # The value returned is the result of the common special cases.
1378 # If not null, client must compile it with the result of their own effective method invocation.
1380 # If `before_send` can shortcut the whole message sending, a dummy `if(0){`
1381 # is generated to cancel the effective method invocation that will follow
1382 # TODO: find a better approach
1383 private fun before_send
(mmethod
: MMethod, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable
1385 var res
: nullable RuntimeVariable = null
1386 var recv
= arguments
.first
1387 var consider_null
= not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_null
.value
or mmethod
.name
== "==" or mmethod
.name
== "!="
1388 var maybenull
= (recv
.mcasttype
isa MNullableType or recv
.mcasttype
isa MNullType) and consider_null
1390 self.add
("if ({recv} == NULL) \{")
1391 if mmethod
.name
== "==" or mmethod
.name
== "is_same_instance" then
1392 res
= self.new_var
(bool_type
)
1393 var arg
= arguments
[1]
1394 if arg
.mcasttype
isa MNullableType then
1395 self.add
("{res} = ({arg} == NULL);")
1396 else if arg
.mcasttype
isa MNullType then
1397 self.add
("{res} = 1; /* is null */")
1399 self.add
("{res} = 0; /* {arg.inspect} cannot be null */")
1401 else if mmethod
.name
== "!=" then
1402 res
= self.new_var
(bool_type
)
1403 var arg
= arguments
[1]
1404 if arg
.mcasttype
isa MNullableType then
1405 self.add
("{res} = ({arg} != NULL);")
1406 else if arg
.mcasttype
isa MNullType then
1407 self.add
("{res} = 0; /* is null */")
1409 self.add
("{res} = 1; /* {arg.inspect} cannot be null */")
1412 self.add_abort
("Receiver is null")
1414 self.add
("\} else \{")
1418 if not self.compiler
.modelbuilder
.toolcontext
.opt_no_shortcut_equate
.value
and (mmethod
.name
== "==" or mmethod
.name
== "!=" or mmethod
.name
== "is_same_instance") then
1419 # Recv is not null, thus if arg is, it is easy to conclude (and respect the invariants)
1420 var arg
= arguments
[1]
1421 if arg
.mcasttype
isa MNullType then
1422 if res
== null then res
= self.new_var
(bool_type
)
1423 if mmethod
.name
== "!=" then
1424 self.add
("{res} = 1; /* arg is null and recv is not */")
1425 else # `==` and `is_same_instance`
1426 self.add
("{res} = 0; /* arg is null but recv is not */")
1428 self.add
("\}") # closes the null case
1429 self.add
("if (0) \{") # what follow is useless, CC will drop it
1435 private fun table_send
(mmethod
: MMethod, arguments
: Array[RuntimeVariable], mentity
: MEntity): nullable RuntimeVariable
1437 compiler
.modelbuilder
.nb_invok_by_tables
+= 1
1438 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_tables++;")
1440 assert arguments
.length
== mmethod
.intro
.msignature
.arity
+ 1 else debug
("Invalid arity for {mmethod}. {arguments.length} arguments given.")
1442 var res0
= before_send
(mmethod
, arguments
)
1444 var runtime_function
= mmethod
.intro
.virtual_runtime_function
1445 var msignature
= runtime_function
.called_signature
1447 adapt_signature
(mmethod
.intro
, arguments
)
1449 var res
: nullable RuntimeVariable
1450 var ret
= msignature
.return_mtype
1454 res
= self.new_var
(ret
)
1457 var ss
= arguments
.join
(", ")
1459 var const_color
= mentity
.const_color
1466 if mentity
isa MMethod and compiler
.modelbuilder
.toolcontext
.opt_direct_call_monomorph0
.value
then
1467 # opt_direct_call_monomorph0 is used to compare the efficiency of the alternative lookup implementation, ceteris paribus.
1468 # The difference with the non-zero option is that the monomorphism is looked-at on the mmethod level and not at the callsite level.
1469 # TODO: remove this mess and use per callsite service to detect monomorphism in a single place.
1470 var md
= compiler
.is_monomorphic
(mentity
)
1472 var callsym
= md
.virtual_runtime_function
.c_name
1473 self.require_declaration
(callsym
)
1474 self.add
"{ress}{callsym}({ss}); /* {mmethod} on {arguments.first.inspect}*/"
1476 self.require_declaration
(const_color
)
1477 self.add
"{ress}(({runtime_function.c_funptrtype})({class_info(arguments.first)}->vft[{const_color}]))({ss}); /* {mmethod} on {arguments.first.inspect}*/"
1479 else if mentity
isa MMethod and compiler
.modelbuilder
.toolcontext
.opt_guard_call
.value
then
1480 var callsym
= "CALL_" + const_color
1481 self.require_declaration
(callsym
)
1482 self.add
"if (!{callsym}) \{"
1483 self.require_declaration
(const_color
)
1484 self.add
"{ress}(({runtime_function.c_funptrtype})({class_info(arguments.first)}->vft[{const_color}]))({ss}); /* {mmethod} on {arguments.first.inspect}*/"
1485 self.add
"\} else \{"
1486 self.add
"{ress}{callsym}({ss}); /* {mmethod} on {arguments.first.inspect}*/"
1488 else if mentity
isa MMethod and compiler
.modelbuilder
.toolcontext
.opt_trampoline_call
.value
then
1489 var callsym
= "CALL_" + const_color
1490 self.require_declaration
(callsym
)
1491 self.add
"{ress}{callsym}({ss}); /* {mmethod} on {arguments.first.inspect}*/"
1493 self.require_declaration
(const_color
)
1494 self.add
"{ress}(({runtime_function.c_funptrtype})({class_info(arguments.first)}->vft[{const_color}]))({ss}); /* {mmethod} on {arguments.first.inspect}*/"
1497 if res0
!= null then
1503 self.add
("\}") # closes the null case
1508 redef fun call
(mmethoddef
, recvtype
, arguments
)
1510 assert arguments
.length
== mmethoddef
.msignature
.arity
+ 1 else debug
("Invalid arity for {mmethoddef}. {arguments.length} arguments given.")
1512 var res
: nullable RuntimeVariable
1513 var ret
= mmethoddef
.msignature
.return_mtype
1517 ret
= ret
.resolve_for
(mmethoddef
.mclassdef
.bound_mtype
, mmethoddef
.mclassdef
.bound_mtype
, mmethoddef
.mclassdef
.mmodule
, true)
1518 res
= self.new_var
(ret
)
1521 if (mmethoddef
.is_intern
and not compiler
.modelbuilder
.toolcontext
.opt_no_inline_intern
.value
) or
1522 (compiler
.modelbuilder
.toolcontext
.opt_inline_some_methods
.value
and mmethoddef
.can_inline
(self)) then
1523 compiler
.modelbuilder
.nb_invok_by_inline
+= 1
1524 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_inline++;")
1525 var frame
= new StaticFrame(self, mmethoddef
, recvtype
, arguments
)
1526 frame
.returnlabel
= self.get_name
("RET_LABEL")
1527 frame
.returnvar
= res
1528 var old_frame
= self.frame
1530 self.add
("\{ /* Inline {mmethoddef} ({arguments.join(",")}) on {arguments.first.inspect} */")
1531 mmethoddef
.compile_inside_to_c
(self, arguments
)
1532 self.add
("{frame.returnlabel.as(not null)}:(void)0;")
1534 self.frame
= old_frame
1537 compiler
.modelbuilder
.nb_invok_by_direct
+= 1
1538 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_direct++;")
1541 self.adapt_signature
(mmethoddef
, arguments
)
1543 self.require_declaration
(mmethoddef
.c_name
)
1545 self.add
("{mmethoddef.c_name}({arguments.join(", ")}); /* Direct call {mmethoddef} on {arguments.first.inspect}*/")
1548 self.add
("{res} = {mmethoddef.c_name}({arguments.join(", ")});")
1554 redef fun supercall
(m
: MMethodDef, recvtype
: MClassType, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable
1556 if arguments
.first
.mcasttype
.is_c_primitive
then
1557 # In order to shortcut the primitive, we need to find the most specific method
1558 # However, because of performance (no flattening), we always work on the realmainmodule
1559 var main
= self.compiler
.mainmodule
1560 self.compiler
.mainmodule
= self.compiler
.realmainmodule
1561 var res
= self.monomorphic_super_send
(m
, recvtype
, arguments
)
1562 self.compiler
.mainmodule
= main
1565 return table_send
(m
.mproperty
, arguments
, m
)
1568 redef fun vararg_instance
(mpropdef
, recv
, varargs
, elttype
)
1570 # A vararg must be stored into an new array
1571 # The trick is that the dymaic type of the array may depends on the receiver
1572 # of the method (ie recv) if the static type is unresolved
1573 # This is more complex than usual because the unresolved type must not be resolved
1574 # with the current receiver (ie self).
1575 # Therefore to isolate the resolution from self, a local StaticFrame is created.
1576 # One can see this implementation as an inlined method of the receiver whose only
1577 # job is to allocate the array
1578 var old_frame
= self.frame
1579 var frame
= new StaticFrame(self, mpropdef
, mpropdef
.mclassdef
.bound_mtype
, [recv
])
1581 #print "required Array[{elttype}] for recv {recv.inspect}. bound=Array[{self.resolve_for(elttype, recv)}]. selfvar={frame.arguments.first.inspect}"
1582 var res
= self.array_instance
(varargs
, elttype
)
1583 self.frame
= old_frame
1587 redef fun isset_attribute
(a
, recv
)
1589 self.check_recv_notnull
(recv
)
1590 var res
= self.new_var
(bool_type
)
1592 # What is the declared type of the attribute?
1593 var mtype
= a
.intro
.static_mtype
.as(not null)
1594 var intromclassdef
= a
.intro
.mclassdef
1595 mtype
= mtype
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1597 if mtype
isa MNullableType then
1598 self.add
("{res} = 1; /* easy isset: {a} on {recv.inspect} */")
1602 self.require_declaration
(a
.const_color
)
1603 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1604 self.add
("{res} = {recv}->attrs[{a.const_color}] != NULL; /* {a} on {recv.inspect}*/")
1607 if not mtype
.is_c_primitive
and not mtype
.is_tagged
then
1608 self.add
("{res} = {recv}->attrs[{a.const_color}].val != NULL; /* {a} on {recv.inspect} */")
1610 self.add
("{res} = 1; /* NOT YET IMPLEMENTED: isset of primitives: {a} on {recv.inspect} */")
1616 redef fun read_attribute
(a
, recv
)
1618 self.check_recv_notnull
(recv
)
1620 # What is the declared type of the attribute?
1621 var ret
= a
.intro
.static_mtype
.as(not null)
1622 var intromclassdef
= a
.intro
.mclassdef
1623 ret
= ret
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1625 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1626 self.compiler
.attr_read_count
+= 1
1627 self.add
("count_attr_reads++;")
1630 self.require_declaration
(a
.const_color
)
1631 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1632 # Get the attribute or a box (ie. always a val*)
1633 var cret
= self.object_type
.as_nullable
1634 var res
= self.new_var
(cret
)
1637 self.add
("{res} = {recv}->attrs[{a.const_color}]; /* {a} on {recv.inspect} */")
1639 # Check for Uninitialized attribute
1640 if not ret
isa MNullableType and not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_attr_isset
.value
then
1641 self.add
("if (unlikely({res} == NULL)) \{")
1642 self.add_abort
("Uninitialized attribute {a.name}")
1645 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1646 self.compiler
.isset_checks_count
+= 1
1647 self.add
("count_isset_checks++;")
1651 # Return the attribute or its unboxed version
1652 # Note: it is mandatory since we reuse the box on write, we do not whant that the box escapes
1653 return self.autobox
(res
, ret
)
1655 var res
= self.new_var
(ret
)
1656 self.add
("{res} = {recv}->attrs[{a.const_color}].{ret.ctypename}; /* {a} on {recv.inspect} */")
1658 # Check for Uninitialized attribute
1659 if not ret
.is_c_primitive
and not ret
isa MNullableType and not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_attr_isset
.value
then
1660 self.add
("if (unlikely({res} == NULL)) \{")
1661 self.add_abort
("Uninitialized attribute {a.name}")
1663 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1664 self.compiler
.isset_checks_count
+= 1
1665 self.add
("count_isset_checks++;")
1673 redef fun write_attribute
(a
, recv
, value
)
1675 self.check_recv_notnull
(recv
)
1677 # What is the declared type of the attribute?
1678 var mtype
= a
.intro
.static_mtype
.as(not null)
1679 var intromclassdef
= a
.intro
.mclassdef
1680 mtype
= mtype
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1682 # Adapt the value to the declared type
1683 value
= self.autobox
(value
, mtype
)
1685 self.require_declaration
(a
.const_color
)
1686 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1687 var attr
= "{recv}->attrs[{a.const_color}]"
1688 if mtype
.is_tagged
then
1689 # The attribute is not primitive, thus store it as tagged
1690 var tv
= autobox
(value
, compiler
.mainmodule
.object_type
)
1691 self.add
("{attr} = {tv}; /* {a} on {recv.inspect} */")
1692 else if mtype
.is_c_primitive
then
1693 assert mtype
isa MClassType
1694 # The attribute is primitive, thus we store it in a box
1695 # The trick is to create the box the first time then resuse the box
1696 self.add
("if ({attr} != NULL) \{")
1697 self.add
("((struct instance_{mtype.c_name}*){attr})->value = {value}; /* {a} on {recv.inspect} */")
1698 self.add
("\} else \{")
1699 value
= self.autobox
(value
, self.object_type
.as_nullable
)
1700 self.add
("{attr} = {value}; /* {a} on {recv.inspect} */")
1703 # The attribute is not primitive, thus store it direclty
1704 self.add
("{attr} = {value}; /* {a} on {recv.inspect} */")
1707 self.add
("{recv}->attrs[{a.const_color}].{mtype.ctypename} = {value}; /* {a} on {recv.inspect} */")
1711 # Check that mtype is a live open type
1712 fun hardening_live_open_type
(mtype
: MType)
1714 if not compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
1715 self.require_declaration
(mtype
.const_color
)
1716 var col
= mtype
.const_color
1717 self.add
("if({col} == -1) \{")
1718 self.add
("PRINT_ERROR(\"Resolution of a dead open
type: %s\\n\
", \"{mtype.to_s.escape_to_c}\
");")
1719 self.add_abort
("open type dead")
1723 # Check that mtype it a pointer to a live cast type
1724 fun hardening_cast_type
(t
: String)
1726 if not compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
1727 add
("if({t} == NULL) \{")
1728 add_abort
("cast type null")
1730 add
("if({t}->id == -1 || {t}->color == -1) \{")
1731 add
("PRINT_ERROR(\"Try to cast on a dead cast
type: %s\\n\
", {t}->name);")
1732 add_abort
("cast type dead")
1736 redef fun init_instance
(mtype
)
1738 self.require_declaration
("NEW_{mtype.mclass.c_name}")
1739 var compiler
= self.compiler
1740 if mtype
isa MGenericType and mtype
.need_anchor
then
1741 hardening_live_open_type
(mtype
)
1742 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1743 var recv
= self.frame
.arguments
.first
1744 var recv_type_info
= self.type_info
(recv
)
1745 self.require_declaration
(mtype
.const_color
)
1746 return self.new_expr
("NEW_{mtype.mclass.c_name}({recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype
)
1748 compiler
.undead_types
.add
(mtype
)
1749 self.require_declaration
("type_{mtype.c_name}")
1750 return self.new_expr
("NEW_{mtype.mclass.c_name}(&type_{mtype.c_name})", mtype
)
1753 redef fun type_test
(value
, mtype
, tag
)
1755 self.add
("/* {value.inspect} isa {mtype} */")
1756 var compiler
= self.compiler
1758 var recv
= self.frame
.arguments
.first
1759 var recv_type_info
= self.type_info
(recv
)
1761 var res
= self.new_var
(bool_type
)
1763 var cltype
= self.get_name
("cltype")
1764 self.add_decl
("int {cltype};")
1765 var idtype
= self.get_name
("idtype")
1766 self.add_decl
("int {idtype};")
1768 var maybe_null
= self.maybe_null
(value
)
1769 var accept_null
= "0"
1771 if ntype
isa MNullableType then
1776 if value
.mcasttype
.is_subtype
(self.frame
.mpropdef
.mclassdef
.mmodule
, self.frame
.mpropdef
.mclassdef
.bound_mtype
, mtype
) then
1777 self.add
("{res} = 1; /* easy {value.inspect} isa {mtype}*/")
1778 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1779 self.compiler
.count_type_test_skipped
[tag
] += 1
1780 self.add
("count_type_test_skipped_{tag}++;")
1785 if ntype
.need_anchor
then
1786 var type_struct
= self.get_name
("type_struct")
1787 self.add_decl
("const struct type* {type_struct};")
1789 # Either with resolution_table with a direct resolution
1790 hardening_live_open_type
(mtype
)
1791 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1792 self.require_declaration
(mtype
.const_color
)
1793 self.add
("{type_struct} = {recv_type_info}->resolution_table->types[{mtype.const_color}];")
1794 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1795 self.compiler
.count_type_test_unresolved
[tag
] += 1
1796 self.add
("count_type_test_unresolved_{tag}++;")
1798 hardening_cast_type
(type_struct
)
1799 self.add
("{cltype} = {type_struct}->color;")
1800 self.add
("{idtype} = {type_struct}->id;")
1801 if maybe_null
and accept_null
== "0" then
1802 var is_nullable
= self.get_name
("is_nullable")
1803 self.add_decl
("short int {is_nullable};")
1804 self.add
("{is_nullable} = {type_struct}->is_nullable;")
1805 accept_null
= is_nullable
.to_s
1807 else if ntype
isa MClassType then
1808 compiler
.undead_types
.add
(mtype
)
1809 self.require_declaration
("type_{mtype.c_name}")
1810 hardening_cast_type
("(&type_{mtype.c_name})")
1811 self.add
("{cltype} = type_{mtype.c_name}.color;")
1812 self.add
("{idtype} = type_{mtype.c_name}.id;")
1813 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1814 self.compiler
.count_type_test_resolved
[tag
] += 1
1815 self.add
("count_type_test_resolved_{tag}++;")
1818 self.add
("PRINT_ERROR(\"NOT YET IMPLEMENTED: type_test
(%s
, {mtype}).\\n\
", \"{value.inspect}\
"); fatal_exit(1);")
1821 # check color is in table
1823 self.add
("if({value} == NULL) \{")
1824 self.add
("{res} = {accept_null};")
1825 self.add
("\} else \{")
1827 var value_type_info
= self.type_info
(value
)
1828 self.add
("if({cltype} >= {value_type_info}->table_size) \{")
1829 self.add
("{res} = 0;")
1830 self.add
("\} else \{")
1831 self.add
("{res} = {value_type_info}->type_table[{cltype}] == {idtype};")
1840 redef fun is_same_type_test
(value1
, value2
)
1842 var res
= self.new_var
(bool_type
)
1843 # Swap values to be symetric
1844 if value2
.mtype
.is_c_primitive
and not value1
.mtype
.is_c_primitive
then
1849 if value1
.mtype
.is_c_primitive
then
1850 if value2
.mtype
== value1
.mtype
then
1851 self.add
("{res} = 1; /* is_same_type_test: compatible types {value1.mtype} vs. {value2.mtype} */")
1852 else if value2
.mtype
.is_c_primitive
then
1853 self.add
("{res} = 0; /* is_same_type_test: incompatible types {value1.mtype} vs. {value2.mtype}*/")
1855 var mtype1
= value1
.mtype
.as(MClassType)
1856 self.require_declaration
("class_{mtype1.c_name}")
1857 self.add
("{res} = ({value2} != NULL) && ({value2}->class == &class_{mtype1.c_name}); /* is_same_type_test */")
1860 self.add
("{res} = ({value1} == {value2}) || ({value1} != NULL && {value2} != NULL && {class_info(value1)} == {class_info(value2)}); /* is_same_type_test */")
1865 redef fun class_name_string
(value
)
1867 var res
= self.get_name
("var_class_name")
1868 self.add_decl
("const char* {res};")
1869 if not value
.mtype
.is_c_primitive
then
1870 self.add
"{res} = {value} == NULL ? \"null\
" : {type_info(value)}->name;"
1871 else if value
.mtype
isa MClassType and value
.mtype
.as(MClassType).mclass
.kind
== extern_kind
and
1872 value
.mtype
.as(MClassType).name
!= "NativeString" then
1873 self.add
"{res} = \"{value.mtype.as(MClassType).mclass}\
";"
1875 self.require_declaration
("type_{value.mtype.c_name}")
1876 self.add
"{res} = type_{value.mtype.c_name}.name;"
1881 redef fun equal_test
(value1
, value2
)
1883 var res
= self.new_var
(bool_type
)
1884 if value2
.mtype
.is_c_primitive
and not value1
.mtype
.is_c_primitive
then
1889 if value1
.mtype
.is_c_primitive
then
1890 if value2
.mtype
== value1
.mtype
then
1891 self.add
("{res} = {value1} == {value2};")
1892 else if value2
.mtype
.is_c_primitive
then
1893 self.add
("{res} = 0; /* incompatible types {value1.mtype} vs. {value2.mtype}*/")
1894 else if value1
.mtype
.is_tagged
then
1895 self.add
("{res} = ({value2} != NULL) && ({self.autobox(value2, value1.mtype)} == {value1});")
1897 var mtype1
= value1
.mtype
.as(MClassType)
1898 self.require_declaration
("class_{mtype1.c_name}")
1899 self.add
("{res} = ({value2} != NULL) && ({value2}->class == &class_{mtype1.c_name});")
1900 self.add
("if ({res}) \{")
1901 self.add
("{res} = ({self.autobox(value2, value1.mtype)} == {value1});")
1906 var maybe_null
= true
1907 var test
= new Array[String]
1908 var t1
= value1
.mcasttype
1909 if t1
isa MNullableType then
1910 test
.add
("{value1} != NULL")
1915 var t2
= value2
.mcasttype
1916 if t2
isa MNullableType then
1917 test
.add
("{value2} != NULL")
1923 var incompatible
= false
1925 if t1
.is_c_primitive
then
1928 # No need to compare class
1929 else if t2
.is_c_primitive
then
1931 else if can_be_primitive
(value2
) then
1932 if t1
.is_tagged
then
1933 self.add
("{res} = {value1} == {value2};")
1936 if not compiler
.modelbuilder
.toolcontext
.opt_no_tag_primitives
.value
then
1937 test
.add
("(!{extract_tag(value2)})")
1939 test
.add
("{value1}->class == {value2}->class")
1943 else if t2
.is_c_primitive
then
1945 if can_be_primitive
(value1
) then
1946 if t2
.is_tagged
then
1947 self.add
("{res} = {value1} == {value2};")
1950 if not compiler
.modelbuilder
.toolcontext
.opt_no_tag_primitives
.value
then
1951 test
.add
("(!{extract_tag(value1)})")
1953 test
.add
("{value1}->class == {value2}->class")
1961 if incompatible
then
1963 self.add
("{res} = {value1} == {value2}; /* incompatible types {t1} vs. {t2}; but may be NULL*/")
1966 self.add
("{res} = 0; /* incompatible types {t1} vs. {t2}; cannot be NULL */")
1970 if primitive
!= null then
1971 if primitive
.is_tagged
then
1972 self.add
("{res} = {value1} == {value2};")
1975 test
.add
("((struct instance_{primitive.c_name}*){value1})->value == ((struct instance_{primitive.c_name}*){value2})->value")
1976 else if can_be_primitive
(value1
) and can_be_primitive
(value2
) then
1977 if not compiler
.modelbuilder
.toolcontext
.opt_no_tag_primitives
.value
then
1978 test
.add
("(!{extract_tag(value1)}) && (!{extract_tag(value2)})")
1980 test
.add
("{value1}->class == {value2}->class")
1981 var s
= new Array[String]
1982 for t
, v
in self.compiler
.box_kinds
do
1983 if t
.mclass_type
.is_tagged
then continue
1984 s
.add
"({value1}->class->box_kind == {v} && ((struct instance_{t.c_name}*){value1})->value == ((struct instance_{t.c_name}*){value2})->value)"
1987 self.add
("{res} = {value1} == {value2};")
1990 test
.add
("({s.join(" || ")})")
1992 self.add
("{res} = {value1} == {value2};")
1995 self.add
("{res} = {value1} == {value2} || ({test.join(" && ")});")
1999 fun can_be_primitive
(value
: RuntimeVariable): Bool
2001 var t
= value
.mcasttype
.undecorate
2002 if not t
isa MClassType then return false
2003 var k
= t
.mclass
.kind
2004 return k
== interface_kind
or t
.is_c_primitive
2007 fun maybe_null
(value
: RuntimeVariable): Bool
2009 var t
= value
.mcasttype
2010 return t
isa MNullableType or t
isa MNullType
2013 redef fun array_instance
(array
, elttype
)
2015 var nclass
= mmodule
.native_array_class
2016 var arrayclass
= mmodule
.array_class
2017 var arraytype
= arrayclass
.get_mtype
([elttype
])
2018 var res
= self.init_instance
(arraytype
)
2019 self.add
("\{ /* {res} = array_instance Array[{elttype}] */")
2020 var length
= self.int_instance
(array
.length
)
2021 var nat
= native_array_instance
(elttype
, length
)
2022 for i
in [0..array
.length
[ do
2023 var r
= self.autobox
(array
[i
], self.object_type
)
2024 self.add
("((struct instance_{nclass.c_name}*){nat})->values[{i}] = (val*) {r};")
2026 self.send
(self.get_property
("with_native", arrayclass
.intro
.bound_mtype
), [res
, nat
, length
])
2031 redef fun native_array_instance
(elttype
: MType, length
: RuntimeVariable): RuntimeVariable
2033 var mtype
= mmodule
.native_array_type
(elttype
)
2034 self.require_declaration
("NEW_{mtype.mclass.c_name}")
2035 assert mtype
isa MGenericType
2036 var compiler
= self.compiler
2037 length
= autobox
(length
, compiler
.mainmodule
.int_type
)
2038 if mtype
.need_anchor
then
2039 hardening_live_open_type
(mtype
)
2040 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
2041 var recv
= self.frame
.arguments
.first
2042 var recv_type_info
= self.type_info
(recv
)
2043 self.require_declaration
(mtype
.const_color
)
2044 return self.new_expr
("NEW_{mtype.mclass.c_name}({length}, {recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype
)
2046 compiler
.undead_types
.add
(mtype
)
2047 self.require_declaration
("type_{mtype.c_name}")
2048 return self.new_expr
("NEW_{mtype.mclass.c_name}({length}, &type_{mtype.c_name})", mtype
)
2051 redef fun native_array_def
(pname
, ret_type
, arguments
)
2053 var elttype
= arguments
.first
.mtype
2054 var nclass
= mmodule
.native_array_class
2055 var recv
= "((struct instance_{nclass.c_name}*){arguments[0]})->values"
2056 if pname
== "[]" then
2057 # Because the objects are boxed, return the box to avoid unnecessary (or broken) unboxing/reboxing
2058 var res
= self.new_expr
("{recv}[{arguments[1]}]", compiler
.mainmodule
.object_type
)
2059 res
.mcasttype
= ret_type
.as(not null)
2062 else if pname
== "[]=" then
2063 self.add
("{recv}[{arguments[1]}]={arguments[2]};")
2065 else if pname
== "length" then
2066 self.ret
(self.new_expr
("((struct instance_{nclass.c_name}*){arguments[0]})->length", ret_type
.as(not null)))
2068 else if pname
== "copy_to" then
2069 var recv1
= "((struct instance_{nclass.c_name}*){arguments[1]})->values"
2070 self.add
("memmove({recv1}, {recv}, {arguments[2]}*sizeof({elttype.ctype}));")
2075 redef fun native_array_get
(nat
, i
)
2077 var nclass
= mmodule
.native_array_class
2078 var recv
= "((struct instance_{nclass.c_name}*){nat})->values"
2079 # Because the objects are boxed, return the box to avoid unnecessary (or broken) unboxing/reboxing
2080 var res
= self.new_expr
("{recv}[{i}]", compiler
.mainmodule
.object_type
)
2084 redef fun native_array_set
(nat
, i
, val
)
2086 var nclass
= mmodule
.native_array_class
2087 var recv
= "((struct instance_{nclass.c_name}*){nat})->values"
2088 self.add
("{recv}[{i}]={val};")
2091 fun link_unresolved_type
(mclassdef
: MClassDef, mtype
: MType) do
2092 assert mtype
.need_anchor
2093 var compiler
= self.compiler
2094 if not compiler
.live_unresolved_types
.has_key
(self.frame
.mpropdef
.mclassdef
) then
2095 compiler
.live_unresolved_types
[self.frame
.mpropdef
.mclassdef
] = new HashSet[MType]
2097 compiler
.live_unresolved_types
[self.frame
.mpropdef
.mclassdef
].add
(mtype
)
2101 redef class MMethodDef
2102 # The C function associated to a mmethoddef
2103 fun separate_runtime_function
: SeparateRuntimeFunction
2105 var res
= self.separate_runtime_function_cache
2107 var recv
= mclassdef
.bound_mtype
2108 var msignature
= msignature
.resolve_for
(recv
, recv
, mclassdef
.mmodule
, true)
2109 res
= new SeparateRuntimeFunction(self, recv
, msignature
, c_name
)
2110 self.separate_runtime_function_cache
= res
2114 private var separate_runtime_function_cache
: nullable SeparateRuntimeFunction
2116 # The C function associated to a mmethoddef, that can be stored into a VFT of a class
2117 # The first parameter (the reciever) is always typed by val* in order to accept an object value
2118 # The C-signature is always compatible with the intro
2119 fun virtual_runtime_function
: SeparateRuntimeFunction
2121 var res
= self.virtual_runtime_function_cache
2123 # Because the function is virtual, the signature must match the one of the original class
2124 var intromclassdef
= mproperty
.intro
.mclassdef
2125 var recv
= intromclassdef
.bound_mtype
2127 res
= separate_runtime_function
2128 if res
.called_recv
== recv
then
2129 self.virtual_runtime_function_cache
= res
2133 var msignature
= mproperty
.intro
.msignature
.resolve_for
(recv
, recv
, intromclassdef
.mmodule
, true)
2135 if recv
.ctype
== res
.called_recv
.ctype
and msignature
.c_equiv
(res
.called_signature
) then
2136 self.virtual_runtime_function_cache
= res
2140 res
= new SeparateRuntimeFunction(self, recv
, msignature
, "VIRTUAL_{c_name}")
2141 self.virtual_runtime_function_cache
= res
2146 private var virtual_runtime_function_cache
: nullable SeparateRuntimeFunction
2149 redef class MSignature
2150 # Does the C-version of `self` the same than the C-version of `other`?
2151 fun c_equiv
(other
: MSignature): Bool
2153 if self == other
then return true
2154 if arity
!= other
.arity
then return false
2155 for i
in [0..arity
[ do
2156 if mparameters
[i
].mtype
.ctype
!= other
.mparameters
[i
].mtype
.ctype
then return false
2158 if return_mtype
!= other
.return_mtype
then
2159 if return_mtype
== null or other
.return_mtype
== null then return false
2160 if return_mtype
.ctype
!= other
.return_mtype
.ctype
then return false
2166 # The C function associated to a methoddef separately compiled
2167 class SeparateRuntimeFunction
2168 super AbstractRuntimeFunction
2170 # The call-side static receiver
2171 var called_recv
: MType
2173 # The call-side static signature
2174 var called_signature
: MSignature
2176 # The name on the compiled method
2177 redef var build_c_name
: String
2179 # Statically call the original body instead
2180 var is_thunk
= false
2182 redef fun to_s
do return self.mmethoddef
.to_s
2184 # The C return type (something or `void`)
2185 var c_ret
: String is lazy
do
2186 var ret
= called_signature
.return_mtype
2194 # The C signature (only the parmeter part)
2195 var c_sig
: String is lazy
do
2196 var sig
= new FlatBuffer
2197 sig
.append
("({called_recv.ctype} self")
2198 for i
in [0..called_signature
.arity
[ do
2199 var mtype
= called_signature
.mparameters
[i
].mtype
2200 if i
== called_signature
.vararg_rank
then
2201 mtype
= mmethoddef
.mclassdef
.mmodule
.array_type
(mtype
)
2203 sig
.append
(", {mtype.ctype} p{i}")
2209 # The C type for the function pointer.
2210 var c_funptrtype
: String is lazy
do return "{c_ret}(*){c_sig}"
2212 redef fun compile_to_c
(compiler
)
2214 var mmethoddef
= self.mmethoddef
2216 var sig
= "{c_ret} {c_name}{c_sig}"
2217 compiler
.provide_declaration
(self.c_name
, "{sig} __attribute__((weak));")
2219 var rta
= compiler
.as(SeparateCompiler).runtime_type_analysis
2220 if rta
!= null and not rta
.live_mmodules
.has
(mmethoddef
.mclassdef
.mmodule
) then
2224 var recv
= self.mmethoddef
.mclassdef
.bound_mtype
2225 var v
= compiler
.new_visitor
2226 var selfvar
= new RuntimeVariable("self", called_recv
, recv
)
2227 var arguments
= new Array[RuntimeVariable]
2228 var frame
= new StaticFrame(v
, mmethoddef
, recv
, arguments
)
2231 var msignature
= called_signature
2232 var ret
= called_signature
.return_mtype
2234 var comment
= new FlatBuffer
2235 comment
.append
("({selfvar}: {selfvar.mtype}")
2236 arguments
.add
(selfvar
)
2237 for i
in [0..msignature
.arity
[ do
2238 var mtype
= msignature
.mparameters
[i
].mtype
2239 if i
== msignature
.vararg_rank
then
2240 mtype
= v
.mmodule
.array_type
(mtype
)
2242 comment
.append
(", {mtype}")
2243 var argvar
= new RuntimeVariable("p{i}", mtype
, mtype
)
2244 arguments
.add
(argvar
)
2248 comment
.append
(": {ret}")
2251 v
.add_decl
("/* method {self} for {comment} */")
2252 v
.add_decl
("{sig} \{")
2254 frame
.returnvar
= v
.new_var
(ret
)
2256 frame
.returnlabel
= v
.get_name
("RET_LABEL")
2259 var subret
= v
.call
(mmethoddef
, recv
, arguments
)
2261 assert subret
!= null
2262 v
.assign
(frame
.returnvar
.as(not null), subret
)
2265 mmethoddef
.compile_inside_to_c
(v
, arguments
)
2268 v
.add
("{frame.returnlabel.as(not null)}:;")
2270 v
.add
("return {frame.returnvar.as(not null)};")
2273 compiler
.names
[self.c_name
] = "{mmethoddef.full_name} ({mmethoddef.location.file.filename}:{mmethoddef.location.line_start})"
2276 # Compile the trampolines used to implement late-binding.
2278 # See `opt_trampoline_call`.
2279 fun compile_trampolines
(compiler
: SeparateCompiler)
2281 var recv
= self.mmethoddef
.mclassdef
.bound_mtype
2282 var selfvar
= new RuntimeVariable("self", called_recv
, recv
)
2283 var ret
= called_signature
.return_mtype
2284 var arguments
= ["self"]
2285 for i
in [0..called_signature
.arity
[ do arguments
.add
"p{i}"
2287 if mmethoddef
.is_intro
and not recv
.is_c_primitive
then
2288 var m
= mmethoddef
.mproperty
2289 var n2
= "CALL_" + m
.const_color
2290 compiler
.provide_declaration
(n2
, "{c_ret} {n2}{c_sig};")
2291 var v2
= compiler
.new_visitor
2292 v2
.add
"{c_ret} {n2}{c_sig} \{"
2293 v2
.require_declaration
(m
.const_color
)
2294 var call
= "(({c_funptrtype})({v2.class_info(selfvar)}->vft[{m.const_color}]))({arguments.join(", ")});"
2296 v2
.add
"return {call}"
2304 if mmethoddef
.has_supercall
and not recv
.is_c_primitive
then
2306 var n2
= "CALL_" + m
.const_color
2307 compiler
.provide_declaration
(n2
, "{c_ret} {n2}{c_sig};")
2308 var v2
= compiler
.new_visitor
2309 v2
.add
"{c_ret} {n2}{c_sig} \{"
2310 v2
.require_declaration
(m
.const_color
)
2311 var call
= "(({c_funptrtype})({v2.class_info(selfvar)}->vft[{m.const_color}]))({arguments.join(", ")});"
2313 v2
.add
"return {call}"
2324 # Are values of `self` tagged?
2325 # If false, it means that the type is not primitive, or is boxed.
2326 var is_tagged
= false
2330 var const_color
: String is lazy
do return "COLOR_{c_name}"
2333 interface PropertyLayoutElement end
2335 redef class MProperty
2336 super PropertyLayoutElement
2339 redef class MPropDef
2340 super PropertyLayoutElement
2343 redef class AMethPropdef
2344 # The semi-global compilation does not support inlining calls to extern news
2345 redef fun can_inline
2348 if m
!= null and m
.mproperty
.is_init
and m
.is_extern
then return false
2353 redef class AAttrPropdef
2354 redef fun init_expr
(v
, recv
)
2357 if is_lazy
and v
.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
2358 var guard
= self.mlazypropdef
.mproperty
2359 v
.write_attribute
(guard
, recv
, v
.bool_instance
(false))