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 # --colors-are-symbols
34 var opt_colors_are_symbols
= new OptionBool("Store colors as symbols (link-boost)", "--colors-are-symbols")
36 var opt_trampoline_call
= new OptionBool("Use an indirection when calling", "--trampoline-call")
38 var opt_guard_call
= new OptionBool("Guard VFT calls with a direct call", "--guard-call")
39 # --substitute-monomorph
40 var opt_substitute_monomorph
= new OptionBool("Replace monomorph trampoline with direct call (link-boost)", "--substitute-monomorph")
42 var opt_link_boost
= new OptionBool("Enable all link-boost optimizations", "--link-boost")
44 # --inline-coloring-numbers
45 var opt_inline_coloring_numbers
= new OptionBool("Inline colors and ids (semi-global)", "--inline-coloring-numbers")
46 # --inline-some-methods
47 var opt_inline_some_methods
= new OptionBool("Allow the separate compiler to inline some methods (semi-global)", "--inline-some-methods")
48 # --direct-call-monomorph
49 var opt_direct_call_monomorph
= new OptionBool("Allow the separate compiler to direct call monomorph sites (semi-global)", "--direct-call-monomorph")
50 # --direct-call-monomorph0
51 var opt_direct_call_monomorph0
= new OptionBool("Allow the separate compiler to direct call monomorph sites (semi-global)", "--direct-call-monomorph0")
53 var opt_skip_dead_methods
= new OptionBool("Do not compile dead methods (semi-global)", "--skip-dead-methods")
55 var opt_semi_global
= new OptionBool("Enable all semi-global optimizations", "--semi-global")
56 # --no-colo-dead-methods
57 var opt_colo_dead_methods
= new OptionBool("Force colorization of dead methods", "--colo-dead-methods")
59 var opt_tables_metrics
= new OptionBool("Enable static size measuring of tables used for vft, typing and resolution", "--tables-metrics")
64 self.option_context
.add_option
(self.opt_separate
)
65 self.option_context
.add_option
(self.opt_no_inline_intern
)
66 self.option_context
.add_option
(self.opt_no_union_attribute
)
67 self.option_context
.add_option
(self.opt_no_shortcut_equate
)
68 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
)
69 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
)
70 self.option_context
.add_option
(self.opt_colo_dead_methods
)
71 self.option_context
.add_option
(self.opt_tables_metrics
)
74 redef fun process_options
(args
)
79 if tc
.opt_semi_global
.value
then
80 tc
.opt_inline_coloring_numbers
.value
= true
81 tc
.opt_inline_some_methods
.value
= true
82 tc
.opt_direct_call_monomorph
.value
= true
83 tc
.opt_skip_dead_methods
.value
= true
85 if tc
.opt_link_boost
.value
then
86 tc
.opt_colors_are_symbols
.value
= true
87 tc
.opt_substitute_monomorph
.value
= true
89 if tc
.opt_substitute_monomorph
.value
then
90 tc
.opt_trampoline_call
.value
= true
94 var separate_compiler_phase
= new SeparateCompilerPhase(self, null)
97 class SeparateCompilerPhase
99 redef fun process_mainmodule
(mainmodule
, given_mmodules
) do
100 if not toolcontext
.opt_separate
.value
then return
102 var modelbuilder
= toolcontext
.modelbuilder
103 var analysis
= modelbuilder
.do_rapid_type_analysis
(mainmodule
)
104 modelbuilder
.run_separate_compiler
(mainmodule
, analysis
)
108 redef class ModelBuilder
109 fun run_separate_compiler
(mainmodule
: MModule, runtime_type_analysis
: nullable RapidTypeAnalysis)
112 self.toolcontext
.info
("*** GENERATING C ***", 1)
114 var compiler
= new SeparateCompiler(mainmodule
, self, runtime_type_analysis
)
115 compiler
.do_compilation
116 compiler
.display_stats
119 self.toolcontext
.info
("*** END GENERATING C: {time1-time0} ***", 2)
120 write_and_make
(compiler
)
123 # Count number of invocations by VFT
124 private var nb_invok_by_tables
= 0
125 # Count number of invocations by direct call
126 private var nb_invok_by_direct
= 0
127 # Count number of invocations by inlining
128 private var nb_invok_by_inline
= 0
131 # Singleton that store the knowledge about the separate compilation process
132 class SeparateCompiler
133 super AbstractCompiler
135 redef type VISITOR: SeparateCompilerVisitor
137 # The result of the RTA (used to know live types and methods)
138 var runtime_type_analysis
: nullable RapidTypeAnalysis
140 private var undead_types
: Set[MType] = new HashSet[MType]
141 private var live_unresolved_types
: Map[MClassDef, Set[MType]] = new HashMap[MClassDef, HashSet[MType]]
143 private var type_ids
: Map[MType, Int] is noinit
144 private var type_colors
: Map[MType, Int] is noinit
145 private var opentype_colors
: Map[MType, Int] is noinit
146 protected var method_colors
: Map[PropertyLayoutElement, Int] is noinit
147 protected var attr_colors
: Map[MAttribute, Int] is noinit
150 var file
= new_file
("nit.common")
151 self.header
= new CodeWriter(file
)
152 self.compile_box_kinds
155 redef fun do_compilation
158 compiler
.compile_header
160 var c_name
= mainmodule
.c_name
162 # compile class structures
163 modelbuilder
.toolcontext
.info
("Property coloring", 2)
164 compiler
.new_file
("{c_name}.classes")
165 compiler
.do_property_coloring
166 for m
in mainmodule
.in_importation
.greaters
do
167 for mclass
in m
.intro_mclasses
do
168 #if mclass.kind == abstract_kind or mclass.kind == interface_kind then continue
169 compiler
.compile_class_to_c
(mclass
)
173 # The main function of the C
174 compiler
.new_file
("{c_name}.main")
175 compiler
.compile_nitni_global_ref_functions
176 compiler
.compile_main_function
177 compiler
.compile_finalizer_function
178 compiler
.link_mmethods
181 for m
in mainmodule
.in_importation
.greaters
do
182 modelbuilder
.toolcontext
.info
("Generate C for module {m.full_name}", 2)
183 compiler
.new_file
("{m.c_name}.sep")
184 compiler
.compile_module_to_c
(m
)
187 # compile live & cast type structures
188 modelbuilder
.toolcontext
.info
("Type coloring", 2)
189 compiler
.new_file
("{c_name}.types")
190 compiler
.compile_types
193 # Color and compile type structures and cast information
198 var mtypes
= compiler
.do_type_coloring
200 compiler
.compile_type_to_c
(t
)
202 # compile remaining types structures (useless but needed for the symbol resolution at link-time)
203 for t
in compiler
.undead_types
do
204 if mtypes
.has
(t
) then continue
205 compiler
.compile_type_to_c
(t
)
210 redef fun compile_header_structs
do
211 self.header
.add_decl
("typedef void(*nitmethod_t)(void); /* general C type representing a Nit method. */")
212 self.compile_header_attribute_structs
213 self.header
.add_decl
("struct class \{ int box_kind; nitmethod_t vft[]; \}; /* general C type representing a Nit class. */")
215 # With resolution_table_table, all live type resolution are stored in a big table: resolution_table
216 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. */")
217 self.header
.add_decl
("struct instance \{ const struct type *type; const struct class *class; nitattribute_t attrs[]; \}; /* general C type representing a Nit instance. */")
218 self.header
.add_decl
("struct types \{ int dummy; const struct type *types[]; \}; /* a list types (used for vts, fts and unresolved lists). */")
219 self.header
.add_decl
("typedef struct instance val; /* general C type representing a Nit instance. */")
222 fun compile_header_attribute_structs
224 if modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
225 self.header
.add_decl
("typedef void* nitattribute_t; /* general C type representing a Nit attribute. */")
227 self.header
.add_decl
("typedef union \{")
228 self.header
.add_decl
("void* val;")
229 for c
, v
in self.box_kinds
do
230 var t
= c
.mclass_type
232 # `Pointer` reuse the `val` field
233 if t
.mclass
.name
== "Pointer" then continue
235 self.header
.add_decl
("{t.ctype_extern} {t.ctypename};")
237 self.header
.add_decl
("\} nitattribute_t; /* general C type representing a Nit attribute. */")
241 fun compile_box_kinds
243 # Collect all bas box class
244 # FIXME: this is not completely fine with a separate compilation scheme
245 for classname
in ["Int", "Bool", "Char", "Float", "NativeString", "Pointer"] do
246 var classes
= self.mainmodule
.model
.get_mclasses_by_name
(classname
)
247 if classes
== null then continue
248 assert classes
.length
== 1 else print classes
.join
(", ")
249 self.box_kinds
[classes
.first
] = self.box_kinds
.length
+ 1
253 var box_kinds
= new HashMap[MClass, Int]
255 fun box_kind_of
(mclass
: MClass): Int
257 #var pointer_type = self.mainmodule.pointer_type
258 #if mclass.mclass_type.ctype == "val*" or mclass.mclass_type.is_subtype(self.mainmodule, mclass.mclass_type pointer_type) then
259 if mclass
.mclass_type
.ctype_extern
== "val*" then
261 else if mclass
.kind
== extern_kind
and mclass
.name
!= "NativeString" then
262 return self.box_kinds
[self.mainmodule
.get_primitive_class
("Pointer")]
264 return self.box_kinds
[mclass
]
269 fun compile_color_consts
(colors
: Map[Object, Int]) do
271 for m
, c
in colors
do
272 compile_color_const
(v
, m
, c
)
276 fun compile_color_const
(v
: SeparateCompilerVisitor, m
: Object, color
: Int) do
277 if color_consts_done
.has
(m
) then return
278 if m
isa MEntity then
279 if modelbuilder
.toolcontext
.opt_inline_coloring_numbers
.value
then
280 self.provide_declaration
(m
.const_color
, "#define {m.const_color} {color}")
281 else if not modelbuilder
.toolcontext
.opt_colors_are_symbols
.value
or not v
.compiler
.target_platform
.supports_linker_script
then
282 self.provide_declaration
(m
.const_color
, "extern const int {m.const_color};")
283 v
.add
("const int {m.const_color} = {color};")
285 # The color 'C' is the ``address'' of a false static variable 'XC'
286 self.provide_declaration
(m
.const_color
, "#define {m.const_color} ((long)&X{m.const_color})\nextern const void X{m.const_color};")
287 if color
== -1 then color
= 0 # Symbols cannot be negative, so just use 0 for dead things
288 # Teach the linker that the address of 'XC' is `color`.
289 linker_script
.add
("X{m.const_color} = {color};")
294 color_consts_done
.add
(m
)
297 private var color_consts_done
= new HashSet[Object]
299 # colorize classe properties
300 fun do_property_coloring
do
302 var rta
= runtime_type_analysis
305 var poset
= mainmodule
.flatten_mclass_hierarchy
306 var mclasses
= new HashSet[MClass].from
(poset
)
307 var colorer
= new POSetColorer[MClass]
308 colorer
.colorize
(poset
)
310 # The dead methods, still need to provide a dead color symbol
311 var dead_methods
= new Array[MMethod]
313 # lookup properties to build layout with
314 var mmethods
= new HashMap[MClass, Set[PropertyLayoutElement]]
315 var mattributes
= new HashMap[MClass, Set[MAttribute]]
316 for mclass
in mclasses
do
317 mmethods
[mclass
] = new HashSet[PropertyLayoutElement]
318 mattributes
[mclass
] = new HashSet[MAttribute]
319 for mprop
in self.mainmodule
.properties
(mclass
) do
320 if mprop
isa MMethod then
321 if not modelbuilder
.toolcontext
.opt_colo_dead_methods
.value
and rta
!= null and not rta
.live_methods
.has
(mprop
) then
322 dead_methods
.add
(mprop
)
325 mmethods
[mclass
].add
(mprop
)
326 else if mprop
isa MAttribute then
327 mattributes
[mclass
].add
(mprop
)
332 # Collect all super calls (dead or not)
333 var all_super_calls
= new HashSet[MMethodDef]
334 for mmodule
in self.mainmodule
.in_importation
.greaters
do
335 for mclassdef
in mmodule
.mclassdefs
do
336 for mpropdef
in mclassdef
.mpropdefs
do
337 if not mpropdef
isa MMethodDef then continue
338 if mpropdef
.has_supercall
then
339 all_super_calls
.add
(mpropdef
)
345 # lookup super calls and add it to the list of mmethods to build layout with
348 super_calls
= rta
.live_super_sends
350 super_calls
= all_super_calls
353 for mmethoddef
in super_calls
do
354 var mclass
= mmethoddef
.mclassdef
.mclass
355 mmethods
[mclass
].add
(mmethoddef
)
356 for descendant
in mclass
.in_hierarchy
(self.mainmodule
).smallers
do
357 mmethods
[descendant
].add
(mmethoddef
)
362 var meth_colorer
= new POSetBucketsColorer[MClass, PropertyLayoutElement](poset
, colorer
.conflicts
)
363 method_colors
= meth_colorer
.colorize
(mmethods
)
364 method_tables
= build_method_tables
(mclasses
, super_calls
)
365 compile_color_consts
(method_colors
)
367 # attribute null color to dead methods and supercalls
368 for mproperty
in dead_methods
do
369 compile_color_const
(new_visitor
, mproperty
, -1)
371 for mpropdef
in all_super_calls
do
372 if super_calls
.has
(mpropdef
) then continue
373 compile_color_const
(new_visitor
, mpropdef
, -1)
376 # attributes coloration
377 var attr_colorer
= new POSetBucketsColorer[MClass, MAttribute](poset
, colorer
.conflicts
)
378 attr_colors
= attr_colorer
.colorize
(mattributes
)
379 attr_tables
= build_attr_tables
(mclasses
)
380 compile_color_consts
(attr_colors
)
383 fun build_method_tables
(mclasses
: Set[MClass], super_calls
: Set[MMethodDef]): Map[MClass, Array[nullable MPropDef]] do
384 var tables
= new HashMap[MClass, Array[nullable MPropDef]]
385 for mclass
in mclasses
do
386 var table
= new Array[nullable MPropDef]
387 tables
[mclass
] = table
389 var mproperties
= self.mainmodule
.properties
(mclass
)
390 var mtype
= mclass
.intro
.bound_mtype
392 for mproperty
in mproperties
do
393 if not mproperty
isa MMethod then continue
394 if not method_colors
.has_key
(mproperty
) then continue
395 var color
= method_colors
[mproperty
]
396 if table
.length
<= color
then
397 for i
in [table
.length
.. color
[ do
401 table
[color
] = mproperty
.lookup_first_definition
(mainmodule
, mtype
)
404 for supercall
in super_calls
do
405 if not mtype
.collect_mclassdefs
(mainmodule
).has
(supercall
.mclassdef
) then continue
407 var color
= method_colors
[supercall
]
408 if table
.length
<= color
then
409 for i
in [table
.length
.. color
[ do
413 var mmethoddef
= supercall
.lookup_next_definition
(mainmodule
, mtype
)
414 table
[color
] = mmethoddef
421 fun build_attr_tables
(mclasses
: Set[MClass]): Map[MClass, Array[nullable MPropDef]] do
422 var tables
= new HashMap[MClass, Array[nullable MPropDef]]
423 for mclass
in mclasses
do
424 var table
= new Array[nullable MPropDef]
425 tables
[mclass
] = table
427 var mproperties
= self.mainmodule
.properties
(mclass
)
428 var mtype
= mclass
.intro
.bound_mtype
430 for mproperty
in mproperties
do
431 if not mproperty
isa MAttribute then continue
432 if not attr_colors
.has_key
(mproperty
) then continue
433 var color
= attr_colors
[mproperty
]
434 if table
.length
<= color
then
435 for i
in [table
.length
.. color
[ do
439 table
[color
] = mproperty
.lookup_first_definition
(mainmodule
, mtype
)
445 # colorize live types of the program
446 private fun do_type_coloring
: POSet[MType] do
447 # Collect types to colorize
448 var live_types
= runtime_type_analysis
.live_types
449 var live_cast_types
= runtime_type_analysis
.live_cast_types
450 var mtypes
= new HashSet[MType]
451 mtypes
.add_all
(live_types
)
452 for c
in self.box_kinds
.keys
do
453 mtypes
.add
(c
.mclass_type
)
457 var poset
= poset_from_mtypes
(mtypes
, live_cast_types
)
458 var colorer
= new POSetColorer[MType]
459 colorer
.colorize
(poset
)
460 type_ids
= colorer
.ids
461 type_colors
= colorer
.colors
462 type_tables
= build_type_tables
(poset
)
464 # VT and FT are stored with other unresolved types in the big resolution_tables
465 self.compile_resolution_tables
(mtypes
)
470 private fun poset_from_mtypes
(mtypes
, cast_types
: Set[MType]): POSet[MType] do
471 var poset
= new POSet[MType]
474 for o
in cast_types
do
475 if e
== o
then continue
477 if e
.is_subtype
(mainmodule
, null, o
) then
486 fun build_type_tables
(mtypes
: POSet[MType]): Map[MType, Array[nullable MType]] do
487 var tables
= new HashMap[MType, Array[nullable MType]]
488 for mtype
in mtypes
do
489 var table
= new Array[nullable MType]
490 for sup
in mtypes
[mtype
].greaters
do
491 var color
= type_colors
[sup
]
492 if table
.length
<= color
then
493 for i
in [table
.length
.. color
[ do
499 tables
[mtype
] = table
504 protected fun compile_resolution_tables
(mtypes
: Set[MType]) do
505 # resolution_tables is used to perform a type resolution at runtime in O(1)
507 # During the visit of the body of classes, live_unresolved_types are collected
509 # Collect all live_unresolved_types (visited in the body of classes)
511 # Determinate fo each livetype what are its possible requested anchored types
512 var mtype2unresolved
= new HashMap[MClassType, Set[MType]]
513 for mtype
in self.runtime_type_analysis
.live_types
do
514 var set
= new HashSet[MType]
515 for cd
in mtype
.collect_mclassdefs
(self.mainmodule
) do
516 if self.live_unresolved_types
.has_key
(cd
) then
517 set
.add_all
(self.live_unresolved_types
[cd
])
520 mtype2unresolved
[mtype
] = set
523 # Compute the table layout with the prefered method
524 var colorer
= new BucketsColorer[MType, MType]
525 opentype_colors
= colorer
.colorize
(mtype2unresolved
)
526 resolution_tables
= self.build_resolution_tables
(mtype2unresolved
)
528 # Compile a C constant for each collected unresolved type.
529 # Either to a color, or to -1 if the unresolved type is dead (no live receiver can require it)
530 var all_unresolved
= new HashSet[MType]
531 for t
in self.live_unresolved_types
.values
do
532 all_unresolved
.add_all
(t
)
534 var all_unresolved_types_colors
= new HashMap[MType, Int]
535 for t
in all_unresolved
do
536 if opentype_colors
.has_key
(t
) then
537 all_unresolved_types_colors
[t
] = opentype_colors
[t
]
539 all_unresolved_types_colors
[t
] = -1
542 self.compile_color_consts
(all_unresolved_types_colors
)
545 #for k, v in unresolved_types_tables.as(not null) do
546 # print "{k}: {v.join(", ")}"
551 fun build_resolution_tables
(elements
: Map[MClassType, Set[MType]]): Map[MClassType, Array[nullable MType]] do
552 var tables
= new HashMap[MClassType, Array[nullable MType]]
553 for mclasstype
, mtypes
in elements
do
554 var table
= new Array[nullable MType]
555 for mtype
in mtypes
do
556 var color
= opentype_colors
[mtype
]
557 if table
.length
<= color
then
558 for i
in [table
.length
.. color
[ do
564 tables
[mclasstype
] = table
569 # Separately compile all the method definitions of the module
570 fun compile_module_to_c
(mmodule
: MModule)
572 var old_module
= self.mainmodule
573 self.mainmodule
= mmodule
574 for cd
in mmodule
.mclassdefs
do
575 for pd
in cd
.mpropdefs
do
576 if not pd
isa MMethodDef then continue
577 var rta
= runtime_type_analysis
578 if modelbuilder
.toolcontext
.opt_skip_dead_methods
.value
and rta
!= null and not rta
.live_methoddefs
.has
(pd
) then continue
579 #print "compile {pd} @ {cd} @ {mmodule}"
580 var r
= pd
.separate_runtime_function
582 var r2
= pd
.virtual_runtime_function
583 if r2
!= r
then r2
.compile_to_c
(self)
585 # Generate trampolines
586 if modelbuilder
.toolcontext
.opt_trampoline_call
.value
then
587 r2
.compile_trampolines
(self)
591 self.mainmodule
= old_module
594 # Process all introduced methods and compile some linking information (if needed)
597 if not modelbuilder
.toolcontext
.opt_substitute_monomorph
.value
and not modelbuilder
.toolcontext
.opt_guard_call
.value
then return
599 for mmodule
in mainmodule
.in_importation
.greaters
do
600 for cd
in mmodule
.mclassdefs
do
601 for m
in cd
.intro_mproperties
do
602 if not m
isa MMethod then continue
609 # Compile some linking information (if needed)
610 fun link_mmethod
(m
: MMethod)
612 var n2
= "CALL_" + m
.const_color
614 # Replace monomorphic call by a direct call to the virtual implementation
615 var md
= is_monomorphic
(m
)
617 linker_script
.add
("{n2} = {md.virtual_runtime_function.c_name};")
620 # If opt_substitute_monomorph then a trampoline is used, else a weak symbol is used
621 if modelbuilder
.toolcontext
.opt_guard_call
.value
then
622 var r
= m
.intro
.virtual_runtime_function
623 provide_declaration
(n2
, "{r.c_ret} {n2}{r.c_sig} __attribute__((weak));")
627 # The single mmethodef called in case of monomorphism.
628 # Returns nul if dead or polymorphic.
629 fun is_monomorphic
(m
: MMethod): nullable MMethodDef
631 var rta
= runtime_type_analysis
633 # Without RTA, monomorphic means alone (uniq name)
634 if m
.mpropdefs
.length
== 1 then
635 return m
.mpropdefs
.first
640 # With RTA, monomorphic means only live methoddef
641 var res
: nullable MMethodDef = null
642 for md
in m
.mpropdefs
do
643 if rta
.live_methoddefs
.has
(md
) then
644 if res
!= null then return null
652 # Globaly compile the type structure of a live type
653 fun compile_type_to_c
(mtype
: MType)
655 assert not mtype
.need_anchor
656 var is_live
= mtype
isa MClassType and runtime_type_analysis
.live_types
.has
(mtype
)
657 var is_cast_live
= runtime_type_analysis
.live_cast_types
.has
(mtype
)
658 var c_name
= mtype
.c_name
659 var v
= new SeparateCompilerVisitor(self)
660 v
.add_decl
("/* runtime type {mtype} */")
662 # extern const struct type_X
663 self.provide_declaration
("type_{c_name}", "extern const struct type type_{c_name};")
665 # const struct type_X
666 v
.add_decl
("const struct type type_{c_name} = \{")
668 # type id (for cast target)
670 v
.add_decl
("{type_ids[mtype]},")
672 v
.add_decl
("-1, /*CAST DEAD*/")
676 v
.add_decl
("\"{mtype}\
", /* class_name_string */")
678 # type color (for cast target)
680 v
.add_decl
("{type_colors[mtype]},")
682 v
.add_decl
("-1, /*CAST DEAD*/")
686 if mtype
isa MNullableType then
692 # resolution table (for receiver)
694 var mclass_type
= mtype
.as_notnullable
695 assert mclass_type
isa MClassType
696 if resolution_tables
[mclass_type
].is_empty
then
697 v
.add_decl
("NULL, /*NO RESOLUTIONS*/")
699 compile_type_resolution_table
(mtype
)
700 v
.require_declaration
("resolution_table_{c_name}")
701 v
.add_decl
("&resolution_table_{c_name},")
704 v
.add_decl
("NULL, /*DEAD*/")
707 # cast table (for receiver)
709 v
.add_decl
("{self.type_tables[mtype].length},")
711 for stype
in self.type_tables
[mtype
] do
712 if stype
== null then
713 v
.add_decl
("-1, /* empty */")
715 v
.add_decl
("{type_ids[stype]}, /* {stype} */")
720 v
.add_decl
("0, \{\}, /*DEAD TYPE*/")
725 fun compile_type_resolution_table
(mtype
: MType) do
727 var mclass_type
= mtype
.as_notnullable
.as(MClassType)
729 # extern const struct resolution_table_X resolution_table_X
730 self.provide_declaration
("resolution_table_{mtype.c_name}", "extern const struct types resolution_table_{mtype.c_name};")
732 # const struct fts_table_X fts_table_X
734 v
.add_decl
("const struct types resolution_table_{mtype.c_name} = \{")
735 v
.add_decl
("0, /* dummy */")
737 for t
in self.resolution_tables
[mclass_type
] do
739 v
.add_decl
("NULL, /* empty */")
741 # The table stores the result of the type resolution
742 # Therefore, for a receiver `mclass_type`, and a unresolved type `t`
743 # the value stored is tv.
744 var tv
= t
.resolve_for
(mclass_type
, mclass_type
, self.mainmodule
, true)
745 # FIXME: What typeids means here? How can a tv not be live?
746 if type_ids
.has_key
(tv
) then
747 v
.require_declaration
("type_{tv.c_name}")
748 v
.add_decl
("&type_{tv.c_name}, /* {t}: {tv} */")
750 v
.add_decl
("NULL, /* empty ({t}: {tv} not a live type) */")
758 # Globally compile the table of the class mclass
759 # In a link-time optimisation compiler, tables are globally computed
760 # In a true separate compiler (a with dynamic loading) you cannot do this unfortnally
761 fun compile_class_to_c
(mclass
: MClass)
763 var mtype
= mclass
.intro
.bound_mtype
764 var c_name
= mclass
.c_name
766 var vft
= self.method_tables
[mclass
]
767 var attrs
= self.attr_tables
[mclass
]
770 var rta
= runtime_type_analysis
771 var is_dead
= rta
!= null and not rta
.live_classes
.has
(mclass
) and mtype
.ctype
== "val*" and mclass
.name
!= "NativeArray" and mclass
.name
!= "Pointer"
773 v
.add_decl
("/* runtime class {c_name} */")
777 self.provide_declaration
("class_{c_name}", "extern const struct class class_{c_name};")
778 v
.add_decl
("const struct class class_{c_name} = \{")
779 v
.add_decl
("{self.box_kind_of(mclass)}, /* box_kind */")
781 for i
in [0 .. vft
.length
[ do
782 var mpropdef
= vft
[i
]
783 if mpropdef
== null then
784 v
.add_decl
("NULL, /* empty */")
786 assert mpropdef
isa MMethodDef
787 if rta
!= null and not rta
.live_methoddefs
.has
(mpropdef
) then
788 v
.add_decl
("NULL, /* DEAD {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
791 var rf
= mpropdef
.virtual_runtime_function
792 v
.require_declaration
(rf
.c_name
)
793 v
.add_decl
("(nitmethod_t){rf.c_name}, /* pointer to {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
800 if mtype
.ctype
!= "val*" or mtype
.mclass
.name
== "Pointer" then
801 # Is a primitive type or the Pointer class, not any other extern class
803 #Build instance struct
804 self.header
.add_decl
("struct instance_{c_name} \{")
805 self.header
.add_decl
("const struct type *type;")
806 self.header
.add_decl
("const struct class *class;")
807 self.header
.add_decl
("{mtype.ctype_extern} value;")
808 self.header
.add_decl
("\};")
810 if not rta
.live_types
.has
(mtype
) and mtype
.mclass
.name
!= "Pointer" then return
813 self.provide_declaration
("BOX_{c_name}", "val* BOX_{c_name}({mtype.ctype_extern});")
814 v
.add_decl
("/* allocate {mtype} */")
815 v
.add_decl
("val* BOX_{mtype.c_name}({mtype.ctype_extern} value) \{")
816 v
.add
("struct instance_{c_name}*res = nit_alloc(sizeof(struct instance_{c_name}));")
817 v
.compiler
.undead_types
.add
(mtype
)
818 v
.require_declaration
("type_{c_name}")
819 v
.add
("res->type = &type_{c_name};")
820 v
.require_declaration
("class_{c_name}")
821 v
.add
("res->class = &class_{c_name};")
822 v
.add
("res->value = value;")
823 v
.add
("return (val*)res;")
826 if mtype
.mclass
.name
!= "Pointer" then return
829 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
830 v
.add_decl
("/* allocate {mtype} */")
831 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
833 v
.add_abort
("{mclass} is DEAD")
835 var res
= v
.new_named_var
(mtype
, "self")
837 v
.add
("{res} = nit_alloc(sizeof(struct instance_{mtype.c_name}));")
838 v
.add
("{res}->type = type;")
839 hardening_live_type
(v
, "type")
840 v
.require_declaration
("class_{c_name}")
841 v
.add
("{res}->class = &class_{c_name};")
842 v
.add
("((struct instance_{mtype.c_name}*){res})->value = NULL;")
843 v
.add
("return {res};")
847 else if mclass
.name
== "NativeArray" then
848 #Build instance struct
849 self.header
.add_decl
("struct instance_{c_name} \{")
850 self.header
.add_decl
("const struct type *type;")
851 self.header
.add_decl
("const struct class *class;")
852 # NativeArrays are just a instance header followed by a length and an array of values
853 self.header
.add_decl
("int length;")
854 self.header
.add_decl
("val* values[0];")
855 self.header
.add_decl
("\};")
858 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(int length, const struct type* type);")
859 v
.add_decl
("/* allocate {mtype} */")
860 v
.add_decl
("{mtype.ctype} NEW_{c_name}(int length, const struct type* type) \{")
861 var res
= v
.get_name
("self")
862 v
.add_decl
("struct instance_{c_name} *{res};")
863 var mtype_elt
= mtype
.arguments
.first
864 v
.add
("{res} = nit_alloc(sizeof(struct instance_{c_name}) + length*sizeof({mtype_elt.ctype}));")
865 v
.add
("{res}->type = type;")
866 hardening_live_type
(v
, "type")
867 v
.require_declaration
("class_{c_name}")
868 v
.add
("{res}->class = &class_{c_name};")
869 v
.add
("{res}->length = length;")
870 v
.add
("return (val*){res};")
873 else if mtype
.mclass
.kind
== extern_kind
and mtype
.mclass
.name
!= "NativeString" then
874 # Is an extern class (other than Pointer and NativeString)
875 # Pointer is caught in a previous `if`, and NativeString is internal
877 var pointer_type
= mainmodule
.pointer_type
879 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
880 v
.add_decl
("/* allocate {mtype} */")
881 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
883 v
.add_abort
("{mclass} is DEAD")
885 var res
= v
.new_named_var
(mtype
, "self")
887 v
.add
("{res} = nit_alloc(sizeof(struct instance_{pointer_type.c_name}));")
888 v
.add
("{res}->type = type;")
889 hardening_live_type
(v
, "type")
890 v
.require_declaration
("class_{c_name}")
891 v
.add
("{res}->class = &class_{c_name};")
892 v
.add
("((struct instance_{pointer_type.c_name}*){res})->value = NULL;")
893 v
.add
("return {res};")
900 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
901 v
.add_decl
("/* allocate {mtype} */")
902 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
904 v
.add_abort
("{mclass} is DEAD")
906 var res
= v
.new_named_var
(mtype
, "self")
908 v
.add
("{res} = nit_alloc(sizeof(struct instance) + {attrs.length}*sizeof(nitattribute_t));")
909 v
.add
("{res}->type = type;")
910 hardening_live_type
(v
, "type")
911 v
.require_declaration
("class_{c_name}")
912 v
.add
("{res}->class = &class_{c_name};")
913 self.generate_init_attr
(v
, res
, mtype
)
915 v
.add
("return {res};")
920 # Add a dynamic test to ensure that the type referenced by `t` is a live type
921 fun hardening_live_type
(v
: VISITOR, t
: String)
923 if not v
.compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
924 v
.add
("if({t} == NULL) \{")
925 v
.add_abort
("type null")
927 v
.add
("if({t}->table_size == 0) \{")
928 v
.add
("PRINT_ERROR(\"Insantiation of a dead
type: %s\\n\
", {t}->name);")
929 v
.add_abort
("type dead")
933 redef fun new_visitor
do return new SeparateCompilerVisitor(self)
937 private var type_tables
: Map[MType, Array[nullable MType]] = new HashMap[MType, Array[nullable MType]]
938 private var resolution_tables
: Map[MClassType, Array[nullable MType]] = new HashMap[MClassType, Array[nullable MType]]
939 protected var method_tables
: Map[MClass, Array[nullable MPropDef]] = new HashMap[MClass, Array[nullable MPropDef]]
940 protected var attr_tables
: Map[MClass, Array[nullable MPropDef]] = new HashMap[MClass, Array[nullable MPropDef]]
942 redef fun display_stats
945 if self.modelbuilder
.toolcontext
.opt_tables_metrics
.value
then
948 if self.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
951 var tc
= self.modelbuilder
.toolcontext
952 tc
.info
("# implementation of method invocation",2)
953 var nb_invok_total
= modelbuilder
.nb_invok_by_tables
+ modelbuilder
.nb_invok_by_direct
+ modelbuilder
.nb_invok_by_inline
954 tc
.info
("total number of invocations: {nb_invok_total}",2)
955 tc
.info
("invocations by VFT send: {modelbuilder.nb_invok_by_tables} ({div(modelbuilder.nb_invok_by_tables,nb_invok_total)}%)",2)
956 tc
.info
("invocations by direct call: {modelbuilder.nb_invok_by_direct} ({div(modelbuilder.nb_invok_by_direct,nb_invok_total)}%)",2)
957 tc
.info
("invocations by inlining: {modelbuilder.nb_invok_by_inline} ({div(modelbuilder.nb_invok_by_inline,nb_invok_total)}%)",2)
962 print
"# size of subtyping tables"
963 print
"\ttotal \tholes"
966 for t
, table
in type_tables
do
967 total
+= table
.length
968 for e
in table
do if e
== null then holes
+= 1
970 print
"\t{total}\t{holes}"
972 print
"# size of resolution tables"
973 print
"\ttotal \tholes"
976 for t
, table
in resolution_tables
do
977 total
+= table
.length
978 for e
in table
do if e
== null then holes
+= 1
980 print
"\t{total}\t{holes}"
982 print
"# size of methods tables"
983 print
"\ttotal \tholes"
986 for t
, table
in method_tables
do
987 total
+= table
.length
988 for e
in table
do if e
== null then holes
+= 1
990 print
"\t{total}\t{holes}"
992 print
"# size of attributes tables"
993 print
"\ttotal \tholes"
996 for t
, table
in attr_tables
do
997 total
+= table
.length
998 for e
in table
do if e
== null then holes
+= 1
1000 print
"\t{total}\t{holes}"
1003 protected var isset_checks_count
= 0
1004 protected var attr_read_count
= 0
1006 fun display_isset_checks
do
1007 print
"# total number of compiled attribute reads"
1008 print
"\t{attr_read_count}"
1009 print
"# total number of compiled isset-checks"
1010 print
"\t{isset_checks_count}"
1013 redef fun compile_nitni_structs
1015 self.header
.add_decl
"""
1016 struct nitni_instance \{
1017 struct nitni_instance *next,
1018 *prev; /* adjacent global references in global list */
1019 int count; /* number of time this global reference has been marked */
1020 struct instance *value;
1026 redef fun finalize_ffi_for_module
(mmodule
)
1028 var old_module
= self.mainmodule
1029 self.mainmodule
= mmodule
1031 self.mainmodule
= old_module
1035 # A visitor on the AST of property definition that generate the C code of a separate compilation process.
1036 class SeparateCompilerVisitor
1037 super AbstractCompilerVisitor
1039 redef type COMPILER: SeparateCompiler
1041 redef fun adapt_signature
(m
, args
)
1043 var msignature
= m
.msignature
.resolve_for
(m
.mclassdef
.bound_mtype
, m
.mclassdef
.bound_mtype
, m
.mclassdef
.mmodule
, true)
1044 var recv
= args
.first
1045 if recv
.mtype
.ctype
!= m
.mclassdef
.mclass
.mclass_type
.ctype
then
1046 args
.first
= self.autobox
(args
.first
, m
.mclassdef
.mclass
.mclass_type
)
1048 for i
in [0..msignature
.arity
[ do
1049 var t
= msignature
.mparameters
[i
].mtype
1050 if i
== msignature
.vararg_rank
then
1053 args
[i
+1] = self.autobox
(args
[i
+1], t
)
1057 redef fun unbox_signature_extern
(m
, args
)
1059 var msignature
= m
.msignature
.resolve_for
(m
.mclassdef
.bound_mtype
, m
.mclassdef
.bound_mtype
, m
.mclassdef
.mmodule
, true)
1060 if not m
.mproperty
.is_init
and m
.is_extern
then
1061 args
.first
= self.unbox_extern
(args
.first
, m
.mclassdef
.mclass
.mclass_type
)
1063 for i
in [0..msignature
.arity
[ do
1064 var t
= msignature
.mparameters
[i
].mtype
1065 if i
== msignature
.vararg_rank
then
1068 if m
.is_extern
then args
[i
+1] = self.unbox_extern
(args
[i
+1], t
)
1072 redef fun autobox
(value
, mtype
)
1074 if value
.mtype
== mtype
then
1076 else if value
.mtype
.ctype
== "val*" and mtype
.ctype
== "val*" then
1078 else if value
.mtype
.ctype
== "val*" then
1079 return self.new_expr
("((struct instance_{mtype.c_name}*){value})->value; /* autounbox from {value.mtype} to {mtype} */", mtype
)
1080 else if mtype
.ctype
== "val*" then
1081 var valtype
= value
.mtype
.as(MClassType)
1082 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and mtype
.mclass
.name
!= "NativeString" then
1083 valtype
= compiler
.mainmodule
.pointer_type
1085 var res
= self.new_var
(mtype
)
1086 if compiler
.runtime_type_analysis
!= null and not compiler
.runtime_type_analysis
.live_types
.has
(valtype
) then
1087 self.add
("/*no autobox from {value.mtype} to {mtype}: {value.mtype} is not live! */")
1088 self.add
("PRINT_ERROR(\"Dead code executed
!\\n\
"); show_backtrace(1);")
1091 self.require_declaration
("BOX_{valtype.c_name}")
1092 self.add
("{res} = BOX_{valtype.c_name}({value}); /* autobox from {value.mtype} to {mtype} */")
1094 else if (value
.mtype
.ctype
== "void*" and mtype
.ctype
== "void*") or
1095 (value
.mtype
.ctype
== "char*" and mtype
.ctype
== "void*") or
1096 (value
.mtype
.ctype
== "void*" and mtype
.ctype
== "char*") then
1099 # Bad things will appen!
1100 var res
= self.new_var
(mtype
)
1101 self.add
("/* {res} left unintialized (cannot convert {value.mtype} to {mtype}) */")
1102 self.add
("PRINT_ERROR(\"Cast error
: Cannot cast
%s to
%s
.\\n\
", \"{value.mtype}\
", \"{mtype}\
"); show_backtrace(1);")
1107 redef fun unbox_extern
(value
, mtype
)
1109 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and
1110 mtype
.mclass
.name
!= "NativeString" then
1111 var pointer_type
= compiler
.mainmodule
.pointer_type
1112 var res
= self.new_var_extern
(mtype
)
1113 self.add
"{res} = ((struct instance_{pointer_type.c_name}*){value})->value; /* unboxing {value.mtype} */"
1120 redef fun box_extern
(value
, mtype
)
1122 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and
1123 mtype
.mclass
.name
!= "NativeString" then
1124 var valtype
= compiler
.mainmodule
.pointer_type
1125 var res
= self.new_var
(mtype
)
1126 if compiler
.runtime_type_analysis
!= null and not compiler
.runtime_type_analysis
.live_types
.has
(value
.mtype
.as(MClassType)) then
1127 self.add
("/*no boxing of {value.mtype}: {value.mtype} is not live! */")
1128 self.add
("PRINT_ERROR(\"Dead code executed
!\\n\
"); show_backtrace(1);")
1131 self.require_declaration
("BOX_{valtype.c_name}")
1132 self.add
("{res} = BOX_{valtype.c_name}({value}); /* boxing {value.mtype} */")
1133 self.require_declaration
("type_{mtype.c_name}")
1134 self.add
("{res}->type = &type_{mtype.c_name};")
1135 self.require_declaration
("class_{mtype.c_name}")
1136 self.add
("{res}->class = &class_{mtype.c_name};")
1143 # Return a C expression returning the runtime type structure of the value
1144 # The point of the method is to works also with primitives types.
1145 fun type_info
(value
: RuntimeVariable): String
1147 if value
.mtype
.ctype
== "val*" then
1148 return "{value}->type"
1150 compiler
.undead_types
.add
(value
.mtype
)
1151 self.require_declaration
("type_{value.mtype.c_name}")
1152 return "(&type_{value.mtype.c_name})"
1156 redef fun compile_callsite
(callsite
, args
)
1158 var rta
= compiler
.runtime_type_analysis
1159 # TODO: Inlining of new-style constructors with initializers
1160 if compiler
.modelbuilder
.toolcontext
.opt_direct_call_monomorph
.value
and rta
!= null and callsite
.mpropdef
.initializers
.is_empty
then
1161 var tgs
= rta
.live_targets
(callsite
)
1162 if tgs
.length
== 1 then
1163 return direct_call
(tgs
.first
, args
)
1166 # Shortcut intern methods as they are not usually redefinable
1167 if callsite
.mpropdef
.is_intern
and callsite
.mproperty
.name
!= "object_id" then
1168 # `object_id` is the only redefined intern method, so it can not be directly called.
1169 # TODO find a less ugly approach?
1170 return direct_call
(callsite
.mpropdef
, args
)
1175 # Fully and directly call a mpropdef
1177 # This method is used by `compile_callsite`
1178 private fun direct_call
(mpropdef
: MMethodDef, args
: Array[RuntimeVariable]): nullable RuntimeVariable
1180 var res0
= before_send
(mpropdef
.mproperty
, args
)
1181 var res
= call
(mpropdef
, mpropdef
.mclassdef
.bound_mtype
, args
)
1182 if res0
!= null then
1184 self.assign
(res0
, res
)
1187 add
("\}") # close the before_send
1190 redef fun send
(mmethod
, arguments
)
1192 if arguments
.first
.mcasttype
.ctype
!= "val*" then
1193 # In order to shortcut the primitive, we need to find the most specific method
1194 # Howverr, because of performance (no flattening), we always work on the realmainmodule
1195 var m
= self.compiler
.mainmodule
1196 self.compiler
.mainmodule
= self.compiler
.realmainmodule
1197 var res
= self.monomorphic_send
(mmethod
, arguments
.first
.mcasttype
, arguments
)
1198 self.compiler
.mainmodule
= m
1202 return table_send
(mmethod
, arguments
, mmethod
)
1205 # Handle common special cases before doing the effective method invocation
1206 # This methods handle the `==` and `!=` methods and the case of the null receiver.
1207 # Note: a { is open in the generated C, that enclose and protect the effective method invocation.
1208 # Client must not forget to close the } after them.
1210 # The value returned is the result of the common special cases.
1211 # If not null, client must compile it with the result of their own effective method invocation.
1213 # If `before_send` can shortcut the whole message sending, a dummy `if(0){`
1214 # is generated to cancel the effective method invocation that will follow
1215 # TODO: find a better approach
1216 private fun before_send
(mmethod
: MMethod, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable
1218 var res
: nullable RuntimeVariable = null
1219 var recv
= arguments
.first
1220 var consider_null
= not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_null
.value
or mmethod
.name
== "==" or mmethod
.name
== "!="
1221 var maybenull
= (recv
.mcasttype
isa MNullableType or recv
.mcasttype
isa MNullType) and consider_null
1223 self.add
("if ({recv} == NULL) \{")
1224 if mmethod
.name
== "==" or mmethod
.name
== "is_same_instance" then
1225 res
= self.new_var
(bool_type
)
1226 var arg
= arguments
[1]
1227 if arg
.mcasttype
isa MNullableType then
1228 self.add
("{res} = ({arg} == NULL);")
1229 else if arg
.mcasttype
isa MNullType then
1230 self.add
("{res} = 1; /* is null */")
1232 self.add
("{res} = 0; /* {arg.inspect} cannot be null */")
1234 else if mmethod
.name
== "!=" then
1235 res
= self.new_var
(bool_type
)
1236 var arg
= arguments
[1]
1237 if arg
.mcasttype
isa MNullableType then
1238 self.add
("{res} = ({arg} != NULL);")
1239 else if arg
.mcasttype
isa MNullType then
1240 self.add
("{res} = 0; /* is null */")
1242 self.add
("{res} = 1; /* {arg.inspect} cannot be null */")
1245 self.add_abort
("Receiver is null")
1247 self.add
("\} else \{")
1251 if not self.compiler
.modelbuilder
.toolcontext
.opt_no_shortcut_equate
.value
and (mmethod
.name
== "==" or mmethod
.name
== "!=" or mmethod
.name
== "is_same_instance") then
1252 # Recv is not null, thus if arg is, it is easy to conclude (and respect the invariants)
1253 var arg
= arguments
[1]
1254 if arg
.mcasttype
isa MNullType then
1255 if res
== null then res
= self.new_var
(bool_type
)
1256 if mmethod
.name
== "!=" then
1257 self.add
("{res} = 1; /* arg is null and recv is not */")
1258 else # `==` and `is_same_instance`
1259 self.add
("{res} = 0; /* arg is null but recv is not */")
1261 self.add
("\}") # closes the null case
1262 self.add
("if (0) \{") # what follow is useless, CC will drop it
1268 private fun table_send
(mmethod
: MMethod, arguments
: Array[RuntimeVariable], mentity
: MEntity): nullable RuntimeVariable
1270 compiler
.modelbuilder
.nb_invok_by_tables
+= 1
1271 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_tables++;")
1273 assert arguments
.length
== mmethod
.intro
.msignature
.arity
+ 1 else debug
("Invalid arity for {mmethod}. {arguments.length} arguments given.")
1274 var recv
= arguments
.first
1276 var res0
= before_send
(mmethod
, arguments
)
1278 var runtime_function
= mmethod
.intro
.virtual_runtime_function
1279 var msignature
= runtime_function
.called_signature
1281 var res
: nullable RuntimeVariable
1282 var ret
= msignature
.return_mtype
1286 res
= self.new_var
(ret
)
1289 var ss
= new FlatBuffer
1292 for i
in [0..msignature
.arity
[ do
1293 var a
= arguments
[i
+1]
1294 var t
= msignature
.mparameters
[i
].mtype
1295 if i
== msignature
.vararg_rank
then
1296 t
= arguments
[i
+1].mcasttype
1298 a
= self.autobox
(a
, t
)
1302 var const_color
= mentity
.const_color
1309 if mentity
isa MMethod and compiler
.modelbuilder
.toolcontext
.opt_direct_call_monomorph0
.value
then
1310 # opt_direct_call_monomorph0 is used to compare the efficiency of the alternative lookup implementation, ceteris paribus.
1311 # The difference with the non-zero option is that the monomorphism is looked-at on the mmethod level and not at the callsite level.
1312 # TODO: remove this mess and use per callsite service to detect monomorphism in a single place.
1313 var md
= compiler
.is_monomorphic
(mentity
)
1315 var callsym
= md
.virtual_runtime_function
.c_name
1316 self.require_declaration
(callsym
)
1317 self.add
"{ress}{callsym}({ss}); /* {mmethod} on {arguments.first.inspect}*/"
1319 self.require_declaration
(const_color
)
1320 self.add
"{ress}(({runtime_function.c_funptrtype})({arguments.first}->class->vft[{const_color}]))({ss}); /* {mmethod} on {arguments.first.inspect}*/"
1322 else if mentity
isa MMethod and compiler
.modelbuilder
.toolcontext
.opt_guard_call
.value
then
1323 var callsym
= "CALL_" + const_color
1324 self.require_declaration
(callsym
)
1325 self.add
"if (!{callsym}) \{"
1326 self.require_declaration
(const_color
)
1327 self.add
"{ress}(({runtime_function.c_funptrtype})({arguments.first}->class->vft[{const_color}]))({ss}); /* {mmethod} on {arguments.first.inspect}*/"
1328 self.add
"\} else \{"
1329 self.add
"{ress}{callsym}({ss}); /* {mmethod} on {arguments.first.inspect}*/"
1331 else if mentity
isa MMethod and compiler
.modelbuilder
.toolcontext
.opt_trampoline_call
.value
then
1332 var callsym
= "CALL_" + const_color
1333 self.require_declaration
(callsym
)
1334 self.add
"{ress}{callsym}({ss}); /* {mmethod} on {arguments.first.inspect}*/"
1336 self.require_declaration
(const_color
)
1337 self.add
"{ress}(({runtime_function.c_funptrtype})({arguments.first}->class->vft[{const_color}]))({ss}); /* {mmethod} on {arguments.first.inspect}*/"
1340 if res0
!= null then
1346 self.add
("\}") # closes the null case
1351 redef fun call
(mmethoddef
, recvtype
, arguments
)
1353 assert arguments
.length
== mmethoddef
.msignature
.arity
+ 1 else debug
("Invalid arity for {mmethoddef}. {arguments.length} arguments given.")
1355 var res
: nullable RuntimeVariable
1356 var ret
= mmethoddef
.msignature
.return_mtype
1360 ret
= ret
.resolve_for
(mmethoddef
.mclassdef
.bound_mtype
, mmethoddef
.mclassdef
.bound_mtype
, mmethoddef
.mclassdef
.mmodule
, true)
1361 res
= self.new_var
(ret
)
1364 if (mmethoddef
.is_intern
and not compiler
.modelbuilder
.toolcontext
.opt_no_inline_intern
.value
) or
1365 (compiler
.modelbuilder
.toolcontext
.opt_inline_some_methods
.value
and mmethoddef
.can_inline
(self)) then
1366 compiler
.modelbuilder
.nb_invok_by_inline
+= 1
1367 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_inline++;")
1368 var frame
= new StaticFrame(self, mmethoddef
, recvtype
, arguments
)
1369 frame
.returnlabel
= self.get_name
("RET_LABEL")
1370 frame
.returnvar
= res
1371 var old_frame
= self.frame
1373 self.add
("\{ /* Inline {mmethoddef} ({arguments.join(",")}) on {arguments.first.inspect} */")
1374 mmethoddef
.compile_inside_to_c
(self, arguments
)
1375 self.add
("{frame.returnlabel.as(not null)}:(void)0;")
1377 self.frame
= old_frame
1380 compiler
.modelbuilder
.nb_invok_by_direct
+= 1
1381 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_direct++;")
1384 self.adapt_signature
(mmethoddef
, arguments
)
1386 self.require_declaration
(mmethoddef
.c_name
)
1388 self.add
("{mmethoddef.c_name}({arguments.join(", ")}); /* Direct call {mmethoddef} on {arguments.first.inspect}*/")
1391 self.add
("{res} = {mmethoddef.c_name}({arguments.join(", ")});")
1397 redef fun supercall
(m
: MMethodDef, recvtype
: MClassType, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable
1399 if arguments
.first
.mcasttype
.ctype
!= "val*" then
1400 # In order to shortcut the primitive, we need to find the most specific method
1401 # However, because of performance (no flattening), we always work on the realmainmodule
1402 var main
= self.compiler
.mainmodule
1403 self.compiler
.mainmodule
= self.compiler
.realmainmodule
1404 var res
= self.monomorphic_super_send
(m
, recvtype
, arguments
)
1405 self.compiler
.mainmodule
= main
1408 return table_send
(m
.mproperty
, arguments
, m
)
1411 redef fun vararg_instance
(mpropdef
, recv
, varargs
, elttype
)
1413 # A vararg must be stored into an new array
1414 # The trick is that the dymaic type of the array may depends on the receiver
1415 # of the method (ie recv) if the static type is unresolved
1416 # This is more complex than usual because the unresolved type must not be resolved
1417 # with the current receiver (ie self).
1418 # Therefore to isolate the resolution from self, a local StaticFrame is created.
1419 # One can see this implementation as an inlined method of the receiver whose only
1420 # job is to allocate the array
1421 var old_frame
= self.frame
1422 var frame
= new StaticFrame(self, mpropdef
, mpropdef
.mclassdef
.bound_mtype
, [recv
])
1424 #print "required Array[{elttype}] for recv {recv.inspect}. bound=Array[{self.resolve_for(elttype, recv)}]. selfvar={frame.arguments.first.inspect}"
1425 var res
= self.array_instance
(varargs
, elttype
)
1426 self.frame
= old_frame
1430 redef fun isset_attribute
(a
, recv
)
1432 self.check_recv_notnull
(recv
)
1433 var res
= self.new_var
(bool_type
)
1435 # What is the declared type of the attribute?
1436 var mtype
= a
.intro
.static_mtype
.as(not null)
1437 var intromclassdef
= a
.intro
.mclassdef
1438 mtype
= mtype
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1440 if mtype
isa MNullableType then
1441 self.add
("{res} = 1; /* easy isset: {a} on {recv.inspect} */")
1445 self.require_declaration
(a
.const_color
)
1446 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1447 self.add
("{res} = {recv}->attrs[{a.const_color}] != NULL; /* {a} on {recv.inspect}*/")
1450 if mtype
.ctype
== "val*" then
1451 self.add
("{res} = {recv}->attrs[{a.const_color}].val != NULL; /* {a} on {recv.inspect} */")
1453 self.add
("{res} = 1; /* NOT YET IMPLEMENTED: isset of primitives: {a} on {recv.inspect} */")
1459 redef fun read_attribute
(a
, recv
)
1461 self.check_recv_notnull
(recv
)
1463 # What is the declared type of the attribute?
1464 var ret
= a
.intro
.static_mtype
.as(not null)
1465 var intromclassdef
= a
.intro
.mclassdef
1466 ret
= ret
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1468 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1469 self.compiler
.attr_read_count
+= 1
1470 self.add
("count_attr_reads++;")
1473 self.require_declaration
(a
.const_color
)
1474 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1475 # Get the attribute or a box (ie. always a val*)
1476 var cret
= self.object_type
.as_nullable
1477 var res
= self.new_var
(cret
)
1480 self.add
("{res} = {recv}->attrs[{a.const_color}]; /* {a} on {recv.inspect} */")
1482 # Check for Uninitialized attribute
1483 if not ret
isa MNullableType and not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_attr_isset
.value
then
1484 self.add
("if (unlikely({res} == NULL)) \{")
1485 self.add_abort
("Uninitialized attribute {a.name}")
1488 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1489 self.compiler
.isset_checks_count
+= 1
1490 self.add
("count_isset_checks++;")
1494 # Return the attribute or its unboxed version
1495 # Note: it is mandatory since we reuse the box on write, we do not whant that the box escapes
1496 return self.autobox
(res
, ret
)
1498 var res
= self.new_var
(ret
)
1499 self.add
("{res} = {recv}->attrs[{a.const_color}].{ret.ctypename}; /* {a} on {recv.inspect} */")
1501 # Check for Uninitialized attribute
1502 if ret
.ctype
== "val*" and not ret
isa MNullableType and not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_attr_isset
.value
then
1503 self.add
("if (unlikely({res} == NULL)) \{")
1504 self.add_abort
("Uninitialized attribute {a.name}")
1506 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1507 self.compiler
.isset_checks_count
+= 1
1508 self.add
("count_isset_checks++;")
1516 redef fun write_attribute
(a
, recv
, value
)
1518 self.check_recv_notnull
(recv
)
1520 # What is the declared type of the attribute?
1521 var mtype
= a
.intro
.static_mtype
.as(not null)
1522 var intromclassdef
= a
.intro
.mclassdef
1523 mtype
= mtype
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1525 # Adapt the value to the declared type
1526 value
= self.autobox
(value
, mtype
)
1528 self.require_declaration
(a
.const_color
)
1529 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1530 var attr
= "{recv}->attrs[{a.const_color}]"
1531 if mtype
.ctype
!= "val*" then
1532 assert mtype
isa MClassType
1533 # The attribute is primitive, thus we store it in a box
1534 # The trick is to create the box the first time then resuse the box
1535 self.add
("if ({attr} != NULL) \{")
1536 self.add
("((struct instance_{mtype.c_name}*){attr})->value = {value}; /* {a} on {recv.inspect} */")
1537 self.add
("\} else \{")
1538 value
= self.autobox
(value
, self.object_type
.as_nullable
)
1539 self.add
("{attr} = {value}; /* {a} on {recv.inspect} */")
1542 # The attribute is not primitive, thus store it direclty
1543 self.add
("{attr} = {value}; /* {a} on {recv.inspect} */")
1546 self.add
("{recv}->attrs[{a.const_color}].{mtype.ctypename} = {value}; /* {a} on {recv.inspect} */")
1550 # Check that mtype is a live open type
1551 fun hardening_live_open_type
(mtype
: MType)
1553 if not compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
1554 self.require_declaration
(mtype
.const_color
)
1555 var col
= mtype
.const_color
1556 self.add
("if({col} == -1) \{")
1557 self.add
("PRINT_ERROR(\"Resolution of a dead open
type: %s\\n\
", \"{mtype.to_s.escape_to_c}\
");")
1558 self.add_abort
("open type dead")
1562 # Check that mtype it a pointer to a live cast type
1563 fun hardening_cast_type
(t
: String)
1565 if not compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
1566 add
("if({t} == NULL) \{")
1567 add_abort
("cast type null")
1569 add
("if({t}->id == -1 || {t}->color == -1) \{")
1570 add
("PRINT_ERROR(\"Try to cast on a dead cast
type: %s\\n\
", {t}->name);")
1571 add_abort
("cast type dead")
1575 redef fun init_instance
(mtype
)
1577 self.require_declaration
("NEW_{mtype.mclass.c_name}")
1578 var compiler
= self.compiler
1579 if mtype
isa MGenericType and mtype
.need_anchor
then
1580 hardening_live_open_type
(mtype
)
1581 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1582 var recv
= self.frame
.arguments
.first
1583 var recv_type_info
= self.type_info
(recv
)
1584 self.require_declaration
(mtype
.const_color
)
1585 return self.new_expr
("NEW_{mtype.mclass.c_name}({recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype
)
1587 compiler
.undead_types
.add
(mtype
)
1588 self.require_declaration
("type_{mtype.c_name}")
1589 return self.new_expr
("NEW_{mtype.mclass.c_name}(&type_{mtype.c_name})", mtype
)
1592 redef fun type_test
(value
, mtype
, tag
)
1594 self.add
("/* {value.inspect} isa {mtype} */")
1595 var compiler
= self.compiler
1597 var recv
= self.frame
.arguments
.first
1598 var recv_type_info
= self.type_info
(recv
)
1600 var res
= self.new_var
(bool_type
)
1602 var cltype
= self.get_name
("cltype")
1603 self.add_decl
("int {cltype};")
1604 var idtype
= self.get_name
("idtype")
1605 self.add_decl
("int {idtype};")
1607 var maybe_null
= self.maybe_null
(value
)
1608 var accept_null
= "0"
1610 if ntype
isa MNullableType then
1615 if value
.mcasttype
.is_subtype
(self.frame
.mpropdef
.mclassdef
.mmodule
, self.frame
.mpropdef
.mclassdef
.bound_mtype
, mtype
) then
1616 self.add
("{res} = 1; /* easy {value.inspect} isa {mtype}*/")
1617 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1618 self.compiler
.count_type_test_skipped
[tag
] += 1
1619 self.add
("count_type_test_skipped_{tag}++;")
1624 if ntype
.need_anchor
then
1625 var type_struct
= self.get_name
("type_struct")
1626 self.add_decl
("const struct type* {type_struct};")
1628 # Either with resolution_table with a direct resolution
1629 hardening_live_open_type
(mtype
)
1630 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1631 self.require_declaration
(mtype
.const_color
)
1632 self.add
("{type_struct} = {recv_type_info}->resolution_table->types[{mtype.const_color}];")
1633 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1634 self.compiler
.count_type_test_unresolved
[tag
] += 1
1635 self.add
("count_type_test_unresolved_{tag}++;")
1637 hardening_cast_type
(type_struct
)
1638 self.add
("{cltype} = {type_struct}->color;")
1639 self.add
("{idtype} = {type_struct}->id;")
1640 if maybe_null
and accept_null
== "0" then
1641 var is_nullable
= self.get_name
("is_nullable")
1642 self.add_decl
("short int {is_nullable};")
1643 self.add
("{is_nullable} = {type_struct}->is_nullable;")
1644 accept_null
= is_nullable
.to_s
1646 else if ntype
isa MClassType then
1647 compiler
.undead_types
.add
(mtype
)
1648 self.require_declaration
("type_{mtype.c_name}")
1649 hardening_cast_type
("(&type_{mtype.c_name})")
1650 self.add
("{cltype} = type_{mtype.c_name}.color;")
1651 self.add
("{idtype} = type_{mtype.c_name}.id;")
1652 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1653 self.compiler
.count_type_test_resolved
[tag
] += 1
1654 self.add
("count_type_test_resolved_{tag}++;")
1657 self.add
("PRINT_ERROR(\"NOT YET IMPLEMENTED: type_test
(%s
, {mtype}).\\n\
", \"{value.inspect}\
"); show_backtrace(1);")
1660 # check color is in table
1662 self.add
("if({value} == NULL) \{")
1663 self.add
("{res} = {accept_null};")
1664 self.add
("\} else \{")
1666 var value_type_info
= self.type_info
(value
)
1667 self.add
("if({cltype} >= {value_type_info}->table_size) \{")
1668 self.add
("{res} = 0;")
1669 self.add
("\} else \{")
1670 self.add
("{res} = {value_type_info}->type_table[{cltype}] == {idtype};")
1679 redef fun is_same_type_test
(value1
, value2
)
1681 var res
= self.new_var
(bool_type
)
1682 # Swap values to be symetric
1683 if value2
.mtype
.ctype
!= "val*" and value1
.mtype
.ctype
== "val*" then
1688 if value1
.mtype
.ctype
!= "val*" then
1689 if value2
.mtype
== value1
.mtype
then
1690 self.add
("{res} = 1; /* is_same_type_test: compatible types {value1.mtype} vs. {value2.mtype} */")
1691 else if value2
.mtype
.ctype
!= "val*" then
1692 self.add
("{res} = 0; /* is_same_type_test: incompatible types {value1.mtype} vs. {value2.mtype}*/")
1694 var mtype1
= value1
.mtype
.as(MClassType)
1695 self.require_declaration
("class_{mtype1.c_name}")
1696 self.add
("{res} = ({value2} != NULL) && ({value2}->class == &class_{mtype1.c_name}); /* is_same_type_test */")
1699 self.add
("{res} = ({value1} == {value2}) || ({value1} != NULL && {value2} != NULL && {value1}->class == {value2}->class); /* is_same_type_test */")
1704 redef fun class_name_string
(value
)
1706 var res
= self.get_name
("var_class_name")
1707 self.add_decl
("const char* {res};")
1708 if value
.mtype
.ctype
== "val*" then
1709 self.add
"{res} = {value} == NULL ? \"null\
" : {value}->type->name;"
1710 else if value
.mtype
isa MClassType and value
.mtype
.as(MClassType).mclass
.kind
== extern_kind
and
1711 value
.mtype
.as(MClassType).name
!= "NativeString" then
1712 self.add
"{res} = \"{value.mtype.as(MClassType).mclass}\
";"
1714 self.require_declaration
("type_{value.mtype.c_name}")
1715 self.add
"{res} = type_{value.mtype.c_name}.name;"
1720 redef fun equal_test
(value1
, value2
)
1722 var res
= self.new_var
(bool_type
)
1723 if value2
.mtype
.ctype
!= "val*" and value1
.mtype
.ctype
== "val*" then
1728 if value1
.mtype
.ctype
!= "val*" then
1729 if value2
.mtype
== value1
.mtype
then
1730 self.add
("{res} = {value1} == {value2};")
1731 else if value2
.mtype
.ctype
!= "val*" then
1732 self.add
("{res} = 0; /* incompatible types {value1.mtype} vs. {value2.mtype}*/")
1734 var mtype1
= value1
.mtype
.as(MClassType)
1735 self.require_declaration
("class_{mtype1.c_name}")
1736 self.add
("{res} = ({value2} != NULL) && ({value2}->class == &class_{mtype1.c_name});")
1737 self.add
("if ({res}) \{")
1738 self.add
("{res} = ({self.autobox(value2, value1.mtype)} == {value1});")
1743 var maybe_null
= true
1744 var test
= new Array[String]
1745 var t1
= value1
.mcasttype
1746 if t1
isa MNullableType then
1747 test
.add
("{value1} != NULL")
1752 var t2
= value2
.mcasttype
1753 if t2
isa MNullableType then
1754 test
.add
("{value2} != NULL")
1760 var incompatible
= false
1762 if t1
.ctype
!= "val*" then
1765 # No need to compare class
1766 else if t2
.ctype
!= "val*" then
1768 else if can_be_primitive
(value2
) then
1769 test
.add
("{value1}->class == {value2}->class")
1773 else if t2
.ctype
!= "val*" then
1775 if can_be_primitive
(value1
) then
1776 test
.add
("{value1}->class == {value2}->class")
1784 if incompatible
then
1786 self.add
("{res} = {value1} == {value2}; /* incompatible types {t1} vs. {t2}; but may be NULL*/")
1789 self.add
("{res} = 0; /* incompatible types {t1} vs. {t2}; cannot be NULL */")
1793 if primitive
!= null then
1794 test
.add
("((struct instance_{primitive.c_name}*){value1})->value == ((struct instance_{primitive.c_name}*){value2})->value")
1795 else if can_be_primitive
(value1
) and can_be_primitive
(value2
) then
1796 test
.add
("{value1}->class == {value2}->class")
1797 var s
= new Array[String]
1798 for t
, v
in self.compiler
.box_kinds
do
1799 s
.add
"({value1}->class->box_kind == {v} && ((struct instance_{t.c_name}*){value1})->value == ((struct instance_{t.c_name}*){value2})->value)"
1801 test
.add
("({s.join(" || ")})")
1803 self.add
("{res} = {value1} == {value2};")
1806 self.add
("{res} = {value1} == {value2} || ({test.join(" && ")});")
1810 fun can_be_primitive
(value
: RuntimeVariable): Bool
1812 var t
= value
.mcasttype
.as_notnullable
1813 if not t
isa MClassType then return false
1814 var k
= t
.mclass
.kind
1815 return k
== interface_kind
or t
.ctype
!= "val*"
1818 fun maybe_null
(value
: RuntimeVariable): Bool
1820 var t
= value
.mcasttype
1821 return t
isa MNullableType or t
isa MNullType
1824 redef fun array_instance
(array
, elttype
)
1826 var nclass
= self.get_class
("NativeArray")
1827 var arrayclass
= self.get_class
("Array")
1828 var arraytype
= arrayclass
.get_mtype
([elttype
])
1829 var res
= self.init_instance
(arraytype
)
1830 self.add
("\{ /* {res} = array_instance Array[{elttype}] */")
1831 var length
= self.int_instance
(array
.length
)
1832 var nat
= native_array_instance
(elttype
, length
)
1833 for i
in [0..array
.length
[ do
1834 var r
= self.autobox
(array
[i
], self.object_type
)
1835 self.add
("((struct instance_{nclass.c_name}*){nat})->values[{i}] = (val*) {r};")
1837 self.send
(self.get_property
("with_native", arrayclass
.intro
.bound_mtype
), [res
, nat
, length
])
1842 redef fun native_array_instance
(elttype
: MType, length
: RuntimeVariable): RuntimeVariable
1844 var mtype
= self.get_class
("NativeArray").get_mtype
([elttype
])
1845 self.require_declaration
("NEW_{mtype.mclass.c_name}")
1846 assert mtype
isa MGenericType
1847 var compiler
= self.compiler
1848 if mtype
.need_anchor
then
1849 hardening_live_open_type
(mtype
)
1850 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1851 var recv
= self.frame
.arguments
.first
1852 var recv_type_info
= self.type_info
(recv
)
1853 self.require_declaration
(mtype
.const_color
)
1854 return self.new_expr
("NEW_{mtype.mclass.c_name}({length}, {recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype
)
1856 compiler
.undead_types
.add
(mtype
)
1857 self.require_declaration
("type_{mtype.c_name}")
1858 return self.new_expr
("NEW_{mtype.mclass.c_name}({length}, &type_{mtype.c_name})", mtype
)
1861 redef fun native_array_def
(pname
, ret_type
, arguments
)
1863 var elttype
= arguments
.first
.mtype
1864 var nclass
= self.get_class
("NativeArray")
1865 var recv
= "((struct instance_{nclass.c_name}*){arguments[0]})->values"
1866 if pname
== "[]" then
1867 # Because the objects are boxed, return the box to avoid unnecessary (or broken) unboxing/reboxing
1868 var res
= self.new_expr
("{recv}[{arguments[1]}]", compiler
.mainmodule
.object_type
)
1869 res
.mcasttype
= ret_type
.as(not null)
1872 else if pname
== "[]=" then
1873 self.add
("{recv}[{arguments[1]}]={arguments[2]};")
1875 else if pname
== "length" then
1876 self.ret
(self.new_expr
("((struct instance_{nclass.c_name}*){arguments[0]})->length", ret_type
.as(not null)))
1878 else if pname
== "copy_to" then
1879 var recv1
= "((struct instance_{nclass.c_name}*){arguments[1]})->values"
1880 self.add
("memmove({recv1}, {recv}, {arguments[2]}*sizeof({elttype.ctype}));")
1885 redef fun calloc_array
(ret_type
, arguments
)
1887 var mclass
= self.get_class
("ArrayCapable")
1888 var ft
= mclass
.mparameters
.first
1889 var res
= self.native_array_instance
(ft
, arguments
[1])
1893 fun link_unresolved_type
(mclassdef
: MClassDef, mtype
: MType) do
1894 assert mtype
.need_anchor
1895 var compiler
= self.compiler
1896 if not compiler
.live_unresolved_types
.has_key
(self.frame
.mpropdef
.mclassdef
) then
1897 compiler
.live_unresolved_types
[self.frame
.mpropdef
.mclassdef
] = new HashSet[MType]
1899 compiler
.live_unresolved_types
[self.frame
.mpropdef
.mclassdef
].add
(mtype
)
1903 redef class MMethodDef
1904 # The C function associated to a mmethoddef
1905 fun separate_runtime_function
: SeparateRuntimeFunction
1907 var res
= self.separate_runtime_function_cache
1909 var recv
= mclassdef
.bound_mtype
1910 var msignature
= msignature
.resolve_for
(recv
, recv
, mclassdef
.mmodule
, true)
1911 res
= new SeparateRuntimeFunction(self, recv
, msignature
, c_name
)
1912 self.separate_runtime_function_cache
= res
1916 private var separate_runtime_function_cache
: nullable SeparateRuntimeFunction
1918 # The C function associated to a mmethoddef, that can be stored into a VFT of a class
1919 # The first parameter (the reciever) is always typed by val* in order to accept an object value
1920 # The C-signature is always compatible with the intro
1921 fun virtual_runtime_function
: SeparateRuntimeFunction
1923 var res
= self.virtual_runtime_function_cache
1925 # Because the function is virtual, the signature must match the one of the original class
1926 var intromclassdef
= mproperty
.intro
.mclassdef
1927 var recv
= intromclassdef
.bound_mtype
1929 res
= separate_runtime_function
1930 if res
.called_recv
== recv
then
1931 self.virtual_runtime_function_cache
= res
1935 var msignature
= mproperty
.intro
.msignature
.resolve_for
(recv
, recv
, intromclassdef
.mmodule
, true)
1937 if recv
.ctype
== res
.called_recv
.ctype
and msignature
.c_equiv
(res
.called_signature
) then
1938 self.virtual_runtime_function_cache
= res
1942 res
= new SeparateRuntimeFunction(self, recv
, msignature
, "VIRTUAL_{c_name}")
1943 self.virtual_runtime_function_cache
= res
1948 private var virtual_runtime_function_cache
: nullable SeparateRuntimeFunction
1951 redef class MSignature
1952 # Does the C-version of `self` the same than the C-version of `other`?
1953 fun c_equiv
(other
: MSignature): Bool
1955 if self == other
then return true
1956 if arity
!= other
.arity
then return false
1957 for i
in [0..arity
[ do
1958 if mparameters
[i
].mtype
.ctype
!= other
.mparameters
[i
].mtype
.ctype
then return false
1960 if return_mtype
!= other
.return_mtype
then
1961 if return_mtype
== null or other
.return_mtype
== null then return false
1962 if return_mtype
.ctype
!= other
.return_mtype
.ctype
then return false
1968 # The C function associated to a methoddef separately compiled
1969 class SeparateRuntimeFunction
1970 super AbstractRuntimeFunction
1972 # The call-side static receiver
1973 var called_recv
: MType
1975 # The call-side static signature
1976 var called_signature
: MSignature
1978 # The name on the compiled method
1979 redef var build_c_name
: String
1981 # Statically call the original body instead
1982 var is_thunk
= false
1984 redef fun to_s
do return self.mmethoddef
.to_s
1986 # The C return type (something or `void`)
1987 var c_ret
: String is lazy
do
1988 var ret
= called_signature
.return_mtype
1996 # The C signature (only the parmeter part)
1997 var c_sig
: String is lazy
do
1998 var sig
= new FlatBuffer
1999 sig
.append
("({called_recv.ctype} self")
2000 for i
in [0..called_signature
.arity
[ do
2001 var mtype
= called_signature
.mparameters
[i
].mtype
2002 if i
== called_signature
.vararg_rank
then
2003 mtype
= mmethoddef
.mclassdef
.mmodule
.get_primitive_class
("Array").get_mtype
([mtype
])
2005 sig
.append
(", {mtype.ctype} p{i}")
2011 # The C type for the function pointer.
2012 var c_funptrtype
: String is lazy
do return "{c_ret}(*){c_sig}"
2014 # The arguments, as generated by `compile_to_c`
2015 private var arguments
: Array[RuntimeVariable] is noinit
2017 redef fun compile_to_c
(compiler
)
2019 var mmethoddef
= self.mmethoddef
2021 var recv
= self.mmethoddef
.mclassdef
.bound_mtype
2022 var v
= compiler
.new_visitor
2023 var selfvar
= new RuntimeVariable("self", called_recv
, recv
)
2024 var arguments
= new Array[RuntimeVariable]
2025 var frame
= new StaticFrame(v
, mmethoddef
, recv
, arguments
)
2028 var msignature
= called_signature
2029 var ret
= called_signature
.return_mtype
2031 var sig
= new FlatBuffer
2032 var comment
= new FlatBuffer
2035 sig
.append
(self.c_name
)
2037 comment
.append
("({selfvar}: {selfvar.mtype}")
2038 arguments
.add
(selfvar
)
2039 for i
in [0..msignature
.arity
[ do
2040 var mtype
= msignature
.mparameters
[i
].mtype
2041 if i
== msignature
.vararg_rank
then
2042 mtype
= v
.get_class
("Array").get_mtype
([mtype
])
2044 comment
.append
(", {mtype}")
2045 var argvar
= new RuntimeVariable("p{i}", mtype
, mtype
)
2046 arguments
.add
(argvar
)
2050 comment
.append
(": {ret}")
2052 compiler
.provide_declaration
(self.c_name
, "{sig};")
2053 self.arguments
= arguments
.to_a
2055 v
.add_decl
("/* method {self} for {comment} */")
2056 v
.add_decl
("{sig} \{")
2058 frame
.returnvar
= v
.new_var
(ret
)
2060 frame
.returnlabel
= v
.get_name
("RET_LABEL")
2063 var subret
= v
.call
(mmethoddef
, recv
, arguments
)
2065 assert subret
!= null
2066 v
.assign
(frame
.returnvar
.as(not null), subret
)
2069 mmethoddef
.compile_inside_to_c
(v
, arguments
)
2072 v
.add
("{frame.returnlabel.as(not null)}:;")
2074 v
.add
("return {frame.returnvar.as(not null)};")
2077 compiler
.names
[self.c_name
] = "{mmethoddef.full_name} ({mmethoddef.location.file.filename}:{mmethoddef.location.line_start})"
2080 # Compile the trampolines used to implement late-binding.
2082 # See `opt_trampoline_call`.
2083 fun compile_trampolines
(compiler
: SeparateCompiler)
2085 var recv
= self.mmethoddef
.mclassdef
.bound_mtype
2086 var selfvar
= arguments
.first
2087 var ret
= called_signature
.return_mtype
2089 if mmethoddef
.is_intro
and recv
.ctype
== "val*" then
2090 var m
= mmethoddef
.mproperty
2091 var n2
= "CALL_" + m
.const_color
2092 compiler
.provide_declaration
(n2
, "{c_ret} {n2}{c_sig};")
2093 var v2
= compiler
.new_visitor
2094 v2
.add
"{c_ret} {n2}{c_sig} \{"
2095 v2
.require_declaration
(m
.const_color
)
2096 var call
= "(({c_funptrtype})({selfvar}->class->vft[{m.const_color}]))({arguments.join(", ")});"
2098 v2
.add
"return {call}"
2106 if mmethoddef
.has_supercall
and recv
.ctype
== "val*" then
2108 var n2
= "CALL_" + m
.const_color
2109 compiler
.provide_declaration
(n2
, "{c_ret} {n2}{c_sig};")
2110 var v2
= compiler
.new_visitor
2111 v2
.add
"{c_ret} {n2}{c_sig} \{"
2112 v2
.require_declaration
(m
.const_color
)
2113 var call
= "(({c_funptrtype})({selfvar}->class->vft[{m.const_color}]))({arguments.join(", ")});"
2115 v2
.add
"return {call}"
2126 var const_color
: String is lazy
do return "COLOR_{c_name}"
2129 interface PropertyLayoutElement end
2131 redef class MProperty
2132 super PropertyLayoutElement
2135 redef class MPropDef
2136 super PropertyLayoutElement
2139 redef class AMethPropdef
2140 # The semi-global compilation does not support inlining calls to extern news
2141 redef fun can_inline
2144 if m
!= null and m
.mproperty
.is_init
and m
.is_extern
then return false