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")
51 var opt_skip_dead_methods
= new OptionBool("Do not compile dead methods (semi-global)", "--skip-dead-methods")
53 var opt_semi_global
= new OptionBool("Enable all semi-global optimizations", "--semi-global")
54 # --no-colo-dead-methods
55 var opt_colo_dead_methods
= new OptionBool("Force colorization of dead methods", "--colo-dead-methods")
57 var opt_tables_metrics
= new OptionBool("Enable static size measuring of tables used for vft, typing and resolution", "--tables-metrics")
62 self.option_context
.add_option
(self.opt_separate
)
63 self.option_context
.add_option
(self.opt_no_inline_intern
)
64 self.option_context
.add_option
(self.opt_no_union_attribute
)
65 self.option_context
.add_option
(self.opt_no_shortcut_equate
)
66 self.option_context
.add_option
(opt_colors_are_symbols
, opt_trampoline_call
, opt_guard_call
, opt_substitute_monomorph
, opt_link_boost
)
67 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
)
68 self.option_context
.add_option
(self.opt_colo_dead_methods
)
69 self.option_context
.add_option
(self.opt_tables_metrics
)
72 redef fun process_options
(args
)
77 if tc
.opt_semi_global
.value
then
78 tc
.opt_inline_coloring_numbers
.value
= true
79 tc
.opt_inline_some_methods
.value
= true
80 tc
.opt_direct_call_monomorph
.value
= true
81 tc
.opt_skip_dead_methods
.value
= true
83 if tc
.opt_link_boost
.value
then
84 tc
.opt_colors_are_symbols
.value
= true
85 tc
.opt_substitute_monomorph
.value
= true
87 if tc
.opt_substitute_monomorph
.value
then
88 tc
.opt_trampoline_call
.value
= true
92 var separate_compiler_phase
= new SeparateCompilerPhase(self, null)
95 class SeparateCompilerPhase
97 redef fun process_mainmodule
(mainmodule
, given_mmodules
) do
98 if not toolcontext
.opt_separate
.value
then return
100 var modelbuilder
= toolcontext
.modelbuilder
101 var analysis
= modelbuilder
.do_rapid_type_analysis
(mainmodule
)
102 modelbuilder
.run_separate_compiler
(mainmodule
, analysis
)
106 redef class ModelBuilder
107 fun run_separate_compiler
(mainmodule
: MModule, runtime_type_analysis
: nullable RapidTypeAnalysis)
110 self.toolcontext
.info
("*** GENERATING C ***", 1)
112 var compiler
= new SeparateCompiler(mainmodule
, self, runtime_type_analysis
)
113 compiler
.do_compilation
114 compiler
.display_stats
117 self.toolcontext
.info
("*** END GENERATING C: {time1-time0} ***", 2)
118 write_and_make
(compiler
)
121 # Count number of invocations by VFT
122 private var nb_invok_by_tables
= 0
123 # Count number of invocations by direct call
124 private var nb_invok_by_direct
= 0
125 # Count number of invocations by inlining
126 private var nb_invok_by_inline
= 0
129 # Singleton that store the knowledge about the separate compilation process
130 class SeparateCompiler
131 super AbstractCompiler
133 redef type VISITOR: SeparateCompilerVisitor
135 # The result of the RTA (used to know live types and methods)
136 var runtime_type_analysis
: nullable RapidTypeAnalysis
138 private var undead_types
: Set[MType] = new HashSet[MType]
139 private var live_unresolved_types
: Map[MClassDef, Set[MType]] = new HashMap[MClassDef, HashSet[MType]]
141 private var type_ids
: Map[MType, Int] is noinit
142 private var type_colors
: Map[MType, Int] is noinit
143 private var opentype_colors
: Map[MType, Int] is noinit
144 protected var method_colors
: Map[PropertyLayoutElement, Int] is noinit
145 protected var attr_colors
: Map[MAttribute, Int] is noinit
148 var file
= new_file
("nit.common")
149 self.header
= new CodeWriter(file
)
150 self.compile_box_kinds
153 redef fun do_compilation
156 compiler
.compile_header
158 var c_name
= mainmodule
.c_name
160 # compile class structures
161 modelbuilder
.toolcontext
.info
("Property coloring", 2)
162 compiler
.new_file
("{c_name}.classes")
163 compiler
.do_property_coloring
164 for m
in mainmodule
.in_importation
.greaters
do
165 for mclass
in m
.intro_mclasses
do
166 #if mclass.kind == abstract_kind or mclass.kind == interface_kind then continue
167 compiler
.compile_class_to_c
(mclass
)
171 # The main function of the C
172 compiler
.new_file
("{c_name}.main")
173 compiler
.compile_nitni_global_ref_functions
174 compiler
.compile_main_function
175 compiler
.compile_finalizer_function
176 compiler
.link_mmethods
179 for m
in mainmodule
.in_importation
.greaters
do
180 modelbuilder
.toolcontext
.info
("Generate C for module {m.full_name}", 2)
181 compiler
.new_file
("{m.c_name}.sep")
182 compiler
.compile_module_to_c
(m
)
185 # compile live & cast type structures
186 modelbuilder
.toolcontext
.info
("Type coloring", 2)
187 compiler
.new_file
("{c_name}.types")
188 compiler
.compile_types
191 # Color and compile type structures and cast information
196 var mtypes
= compiler
.do_type_coloring
198 compiler
.compile_type_to_c
(t
)
200 # compile remaining types structures (useless but needed for the symbol resolution at link-time)
201 for t
in compiler
.undead_types
do
202 if mtypes
.has
(t
) then continue
203 compiler
.compile_type_to_c
(t
)
208 redef fun compile_header_structs
do
209 self.header
.add_decl
("typedef void(*nitmethod_t)(void); /* general C type representing a Nit method. */")
210 self.compile_header_attribute_structs
211 self.header
.add_decl
("struct class \{ int box_kind; nitmethod_t vft[]; \}; /* general C type representing a Nit class. */")
213 # With resolution_table_table, all live type resolution are stored in a big table: resolution_table
214 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. */")
215 self.header
.add_decl
("struct instance \{ const struct type *type; const struct class *class; nitattribute_t attrs[]; \}; /* general C type representing a Nit instance. */")
216 self.header
.add_decl
("struct types \{ int dummy; const struct type *types[]; \}; /* a list types (used for vts, fts and unresolved lists). */")
217 self.header
.add_decl
("typedef struct instance val; /* general C type representing a Nit instance. */")
220 fun compile_header_attribute_structs
222 if modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
223 self.header
.add_decl
("typedef void* nitattribute_t; /* general C type representing a Nit attribute. */")
225 self.header
.add_decl
("typedef union \{")
226 self.header
.add_decl
("void* val;")
227 for c
, v
in self.box_kinds
do
228 var t
= c
.mclass_type
230 # `Pointer` reuse the `val` field
231 if t
.mclass
.name
== "Pointer" then continue
233 self.header
.add_decl
("{t.ctype_extern} {t.ctypename};")
235 self.header
.add_decl
("\} nitattribute_t; /* general C type representing a Nit attribute. */")
239 fun compile_box_kinds
241 # Collect all bas box class
242 # FIXME: this is not completely fine with a separate compilation scheme
243 for classname
in ["Int", "Bool", "Char", "Float", "NativeString", "Pointer"] do
244 var classes
= self.mainmodule
.model
.get_mclasses_by_name
(classname
)
245 if classes
== null then continue
246 assert classes
.length
== 1 else print classes
.join
(", ")
247 self.box_kinds
[classes
.first
] = self.box_kinds
.length
+ 1
251 var box_kinds
= new HashMap[MClass, Int]
253 fun box_kind_of
(mclass
: MClass): Int
255 #var pointer_type = self.mainmodule.pointer_type
256 #if mclass.mclass_type.ctype == "val*" or mclass.mclass_type.is_subtype(self.mainmodule, mclass.mclass_type pointer_type) then
257 if mclass
.mclass_type
.ctype_extern
== "val*" then
259 else if mclass
.kind
== extern_kind
and mclass
.name
!= "NativeString" then
260 return self.box_kinds
[self.mainmodule
.get_primitive_class
("Pointer")]
262 return self.box_kinds
[mclass
]
267 fun compile_color_consts
(colors
: Map[Object, Int]) do
269 for m
, c
in colors
do
270 compile_color_const
(v
, m
, c
)
274 fun compile_color_const
(v
: SeparateCompilerVisitor, m
: Object, color
: Int) do
275 if color_consts_done
.has
(m
) then return
276 if m
isa MEntity then
277 if modelbuilder
.toolcontext
.opt_inline_coloring_numbers
.value
then
278 self.provide_declaration
(m
.const_color
, "#define {m.const_color} {color}")
279 else if not modelbuilder
.toolcontext
.opt_colors_are_symbols
.value
or not v
.compiler
.target_platform
.supports_linker_script
then
280 self.provide_declaration
(m
.const_color
, "extern const int {m.const_color};")
281 v
.add
("const int {m.const_color} = {color};")
283 # The color 'C' is the ``address'' of a false static variable 'XC'
284 self.provide_declaration
(m
.const_color
, "#define {m.const_color} ((long)&X{m.const_color})\nextern const void X{m.const_color};")
285 if color
== -1 then color
= 0 # Symbols cannot be negative, so just use 0 for dead things
286 # Teach the linker that the address of 'XC' is `color`.
287 linker_script
.add
("X{m.const_color} = {color};")
292 color_consts_done
.add
(m
)
295 private var color_consts_done
= new HashSet[Object]
297 # colorize classe properties
298 fun do_property_coloring
do
300 var rta
= runtime_type_analysis
303 var poset
= mainmodule
.flatten_mclass_hierarchy
304 var mclasses
= new HashSet[MClass].from
(poset
)
305 var colorer
= new POSetColorer[MClass]
306 colorer
.colorize
(poset
)
308 # The dead methods, still need to provide a dead color symbol
309 var dead_methods
= new Array[MMethod]
311 # lookup properties to build layout with
312 var mmethods
= new HashMap[MClass, Set[PropertyLayoutElement]]
313 var mattributes
= new HashMap[MClass, Set[MAttribute]]
314 for mclass
in mclasses
do
315 mmethods
[mclass
] = new HashSet[PropertyLayoutElement]
316 mattributes
[mclass
] = new HashSet[MAttribute]
317 for mprop
in self.mainmodule
.properties
(mclass
) do
318 if mprop
isa MMethod then
319 if not modelbuilder
.toolcontext
.opt_colo_dead_methods
.value
and rta
!= null and not rta
.live_methods
.has
(mprop
) then
320 dead_methods
.add
(mprop
)
323 mmethods
[mclass
].add
(mprop
)
324 else if mprop
isa MAttribute then
325 mattributes
[mclass
].add
(mprop
)
330 # Collect all super calls (dead or not)
331 var all_super_calls
= new HashSet[MMethodDef]
332 for mmodule
in self.mainmodule
.in_importation
.greaters
do
333 for mclassdef
in mmodule
.mclassdefs
do
334 for mpropdef
in mclassdef
.mpropdefs
do
335 if not mpropdef
isa MMethodDef then continue
336 if mpropdef
.has_supercall
then
337 all_super_calls
.add
(mpropdef
)
343 # lookup super calls and add it to the list of mmethods to build layout with
346 super_calls
= rta
.live_super_sends
348 super_calls
= all_super_calls
351 for mmethoddef
in super_calls
do
352 var mclass
= mmethoddef
.mclassdef
.mclass
353 mmethods
[mclass
].add
(mmethoddef
)
354 for descendant
in mclass
.in_hierarchy
(self.mainmodule
).smallers
do
355 mmethods
[descendant
].add
(mmethoddef
)
360 var meth_colorer
= new POSetBucketsColorer[MClass, PropertyLayoutElement](poset
, colorer
.conflicts
)
361 method_colors
= meth_colorer
.colorize
(mmethods
)
362 method_tables
= build_method_tables
(mclasses
, super_calls
)
363 compile_color_consts
(method_colors
)
365 # attribute null color to dead methods and supercalls
366 for mproperty
in dead_methods
do
367 compile_color_const
(new_visitor
, mproperty
, -1)
369 for mpropdef
in all_super_calls
do
370 if super_calls
.has
(mpropdef
) then continue
371 compile_color_const
(new_visitor
, mpropdef
, -1)
374 # attributes coloration
375 var attr_colorer
= new POSetBucketsColorer[MClass, MAttribute](poset
, colorer
.conflicts
)
376 attr_colors
= attr_colorer
.colorize
(mattributes
)
377 attr_tables
= build_attr_tables
(mclasses
)
378 compile_color_consts
(attr_colors
)
381 fun build_method_tables
(mclasses
: Set[MClass], super_calls
: Set[MMethodDef]): Map[MClass, Array[nullable MPropDef]] do
382 var tables
= new HashMap[MClass, Array[nullable MPropDef]]
383 for mclass
in mclasses
do
384 var table
= new Array[nullable MPropDef]
385 tables
[mclass
] = table
387 var mproperties
= self.mainmodule
.properties
(mclass
)
388 var mtype
= mclass
.intro
.bound_mtype
390 for mproperty
in mproperties
do
391 if not mproperty
isa MMethod then continue
392 if not method_colors
.has_key
(mproperty
) then continue
393 var color
= method_colors
[mproperty
]
394 if table
.length
<= color
then
395 for i
in [table
.length
.. color
[ do
399 table
[color
] = mproperty
.lookup_first_definition
(mainmodule
, mtype
)
402 for supercall
in super_calls
do
403 if not mtype
.collect_mclassdefs
(mainmodule
).has
(supercall
.mclassdef
) then continue
405 var color
= method_colors
[supercall
]
406 if table
.length
<= color
then
407 for i
in [table
.length
.. color
[ do
411 var mmethoddef
= supercall
.lookup_next_definition
(mainmodule
, mtype
)
412 table
[color
] = mmethoddef
419 fun build_attr_tables
(mclasses
: Set[MClass]): Map[MClass, Array[nullable MPropDef]] do
420 var tables
= new HashMap[MClass, Array[nullable MPropDef]]
421 for mclass
in mclasses
do
422 var table
= new Array[nullable MPropDef]
423 tables
[mclass
] = table
425 var mproperties
= self.mainmodule
.properties
(mclass
)
426 var mtype
= mclass
.intro
.bound_mtype
428 for mproperty
in mproperties
do
429 if not mproperty
isa MAttribute then continue
430 if not attr_colors
.has_key
(mproperty
) then continue
431 var color
= attr_colors
[mproperty
]
432 if table
.length
<= color
then
433 for i
in [table
.length
.. color
[ do
437 table
[color
] = mproperty
.lookup_first_definition
(mainmodule
, mtype
)
443 # colorize live types of the program
444 private fun do_type_coloring
: POSet[MType] do
445 # Collect types to colorize
446 var live_types
= runtime_type_analysis
.live_types
447 var live_cast_types
= runtime_type_analysis
.live_cast_types
448 var mtypes
= new HashSet[MType]
449 mtypes
.add_all
(live_types
)
450 for c
in self.box_kinds
.keys
do
451 mtypes
.add
(c
.mclass_type
)
455 var poset
= poset_from_mtypes
(mtypes
, live_cast_types
)
456 var colorer
= new POSetColorer[MType]
457 colorer
.colorize
(poset
)
458 type_ids
= colorer
.ids
459 type_colors
= colorer
.colors
460 type_tables
= build_type_tables
(poset
)
462 # VT and FT are stored with other unresolved types in the big resolution_tables
463 self.compile_resolution_tables
(mtypes
)
468 private fun poset_from_mtypes
(mtypes
, cast_types
: Set[MType]): POSet[MType] do
469 var poset
= new POSet[MType]
472 for o
in cast_types
do
473 if e
== o
then continue
475 if e
.is_subtype
(mainmodule
, null, o
) then
484 fun build_type_tables
(mtypes
: POSet[MType]): Map[MType, Array[nullable MType]] do
485 var tables
= new HashMap[MType, Array[nullable MType]]
486 for mtype
in mtypes
do
487 var table
= new Array[nullable MType]
488 for sup
in mtypes
[mtype
].greaters
do
489 var color
= type_colors
[sup
]
490 if table
.length
<= color
then
491 for i
in [table
.length
.. color
[ do
497 tables
[mtype
] = table
502 protected fun compile_resolution_tables
(mtypes
: Set[MType]) do
503 # resolution_tables is used to perform a type resolution at runtime in O(1)
505 # During the visit of the body of classes, live_unresolved_types are collected
507 # Collect all live_unresolved_types (visited in the body of classes)
509 # Determinate fo each livetype what are its possible requested anchored types
510 var mtype2unresolved
= new HashMap[MClassType, Set[MType]]
511 for mtype
in self.runtime_type_analysis
.live_types
do
512 var set
= new HashSet[MType]
513 for cd
in mtype
.collect_mclassdefs
(self.mainmodule
) do
514 if self.live_unresolved_types
.has_key
(cd
) then
515 set
.add_all
(self.live_unresolved_types
[cd
])
518 mtype2unresolved
[mtype
] = set
521 # Compute the table layout with the prefered method
522 var colorer
= new BucketsColorer[MType, MType]
523 opentype_colors
= colorer
.colorize
(mtype2unresolved
)
524 resolution_tables
= self.build_resolution_tables
(mtype2unresolved
)
526 # Compile a C constant for each collected unresolved type.
527 # Either to a color, or to -1 if the unresolved type is dead (no live receiver can require it)
528 var all_unresolved
= new HashSet[MType]
529 for t
in self.live_unresolved_types
.values
do
530 all_unresolved
.add_all
(t
)
532 var all_unresolved_types_colors
= new HashMap[MType, Int]
533 for t
in all_unresolved
do
534 if opentype_colors
.has_key
(t
) then
535 all_unresolved_types_colors
[t
] = opentype_colors
[t
]
537 all_unresolved_types_colors
[t
] = -1
540 self.compile_color_consts
(all_unresolved_types_colors
)
543 #for k, v in unresolved_types_tables.as(not null) do
544 # print "{k}: {v.join(", ")}"
549 fun build_resolution_tables
(elements
: Map[MClassType, Set[MType]]): Map[MClassType, Array[nullable MType]] do
550 var tables
= new HashMap[MClassType, Array[nullable MType]]
551 for mclasstype
, mtypes
in elements
do
552 var table
= new Array[nullable MType]
553 for mtype
in mtypes
do
554 var color
= opentype_colors
[mtype
]
555 if table
.length
<= color
then
556 for i
in [table
.length
.. color
[ do
562 tables
[mclasstype
] = table
567 # Separately compile all the method definitions of the module
568 fun compile_module_to_c
(mmodule
: MModule)
570 var old_module
= self.mainmodule
571 self.mainmodule
= mmodule
572 for cd
in mmodule
.mclassdefs
do
573 for pd
in cd
.mpropdefs
do
574 if not pd
isa MMethodDef then continue
575 var rta
= runtime_type_analysis
576 if modelbuilder
.toolcontext
.opt_skip_dead_methods
.value
and rta
!= null and not rta
.live_methoddefs
.has
(pd
) then continue
577 #print "compile {pd} @ {cd} @ {mmodule}"
578 var r
= pd
.separate_runtime_function
580 var r2
= pd
.virtual_runtime_function
581 if r2
!= r
then r2
.compile_to_c
(self)
583 # Generate trampolines
584 if modelbuilder
.toolcontext
.opt_trampoline_call
.value
then
585 r2
.compile_trampolines
(self)
589 self.mainmodule
= old_module
592 # Process all introduced methods and compile some linking information (if needed)
595 if not modelbuilder
.toolcontext
.opt_substitute_monomorph
.value
and not modelbuilder
.toolcontext
.opt_guard_call
.value
then return
597 for mmodule
in mainmodule
.in_importation
.greaters
do
598 for cd
in mmodule
.mclassdefs
do
599 for m
in cd
.intro_mproperties
do
600 if not m
isa MMethod then continue
607 # Compile some linking information (if needed)
608 fun link_mmethod
(m
: MMethod)
610 var n2
= "CALL_" + m
.const_color
612 # Replace monomorphic call by a direct call to the virtual implementation
613 var md
= is_monomorphic
(m
)
615 linker_script
.add
("{n2} = {md.virtual_runtime_function.c_name};")
618 # If opt_substitute_monomorph then a trampoline is used, else a weak symbol is used
619 if modelbuilder
.toolcontext
.opt_guard_call
.value
then
620 var r
= m
.intro
.virtual_runtime_function
621 provide_declaration
(n2
, "{r.c_ret} {n2}{r.c_sig} __attribute__((weak));")
625 # The single mmethodef called in case of monomorphism.
626 # Returns nul if dead or polymorphic.
627 fun is_monomorphic
(m
: MMethod): nullable MMethodDef
629 var rta
= runtime_type_analysis
631 # Without RTA, monomorphic means alone (uniq name)
632 if m
.mpropdefs
.length
== 1 then
633 return m
.mpropdefs
.first
638 # With RTA, monomorphic means only live methoddef
639 var res
: nullable MMethodDef = null
640 for md
in m
.mpropdefs
do
641 if rta
.live_methoddefs
.has
(md
) then
642 if res
!= null then return null
650 # Globaly compile the type structure of a live type
651 fun compile_type_to_c
(mtype
: MType)
653 assert not mtype
.need_anchor
654 var is_live
= mtype
isa MClassType and runtime_type_analysis
.live_types
.has
(mtype
)
655 var is_cast_live
= runtime_type_analysis
.live_cast_types
.has
(mtype
)
656 var c_name
= mtype
.c_name
657 var v
= new SeparateCompilerVisitor(self)
658 v
.add_decl
("/* runtime type {mtype} */")
660 # extern const struct type_X
661 self.provide_declaration
("type_{c_name}", "extern const struct type type_{c_name};")
663 # const struct type_X
664 v
.add_decl
("const struct type type_{c_name} = \{")
666 # type id (for cast target)
668 v
.add_decl
("{type_ids[mtype]},")
670 v
.add_decl
("-1, /*CAST DEAD*/")
674 v
.add_decl
("\"{mtype}\
", /* class_name_string */")
676 # type color (for cast target)
678 v
.add_decl
("{type_colors[mtype]},")
680 v
.add_decl
("-1, /*CAST DEAD*/")
684 if mtype
isa MNullableType then
690 # resolution table (for receiver)
692 var mclass_type
= mtype
.as_notnullable
693 assert mclass_type
isa MClassType
694 if resolution_tables
[mclass_type
].is_empty
then
695 v
.add_decl
("NULL, /*NO RESOLUTIONS*/")
697 compile_type_resolution_table
(mtype
)
698 v
.require_declaration
("resolution_table_{c_name}")
699 v
.add_decl
("&resolution_table_{c_name},")
702 v
.add_decl
("NULL, /*DEAD*/")
705 # cast table (for receiver)
707 v
.add_decl
("{self.type_tables[mtype].length},")
709 for stype
in self.type_tables
[mtype
] do
710 if stype
== null then
711 v
.add_decl
("-1, /* empty */")
713 v
.add_decl
("{type_ids[stype]}, /* {stype} */")
718 v
.add_decl
("0, \{\}, /*DEAD TYPE*/")
723 fun compile_type_resolution_table
(mtype
: MType) do
725 var mclass_type
= mtype
.as_notnullable
.as(MClassType)
727 # extern const struct resolution_table_X resolution_table_X
728 self.provide_declaration
("resolution_table_{mtype.c_name}", "extern const struct types resolution_table_{mtype.c_name};")
730 # const struct fts_table_X fts_table_X
732 v
.add_decl
("const struct types resolution_table_{mtype.c_name} = \{")
733 v
.add_decl
("0, /* dummy */")
735 for t
in self.resolution_tables
[mclass_type
] do
737 v
.add_decl
("NULL, /* empty */")
739 # The table stores the result of the type resolution
740 # Therefore, for a receiver `mclass_type`, and a unresolved type `t`
741 # the value stored is tv.
742 var tv
= t
.resolve_for
(mclass_type
, mclass_type
, self.mainmodule
, true)
743 # FIXME: What typeids means here? How can a tv not be live?
744 if type_ids
.has_key
(tv
) then
745 v
.require_declaration
("type_{tv.c_name}")
746 v
.add_decl
("&type_{tv.c_name}, /* {t}: {tv} */")
748 v
.add_decl
("NULL, /* empty ({t}: {tv} not a live type) */")
756 # Globally compile the table of the class mclass
757 # In a link-time optimisation compiler, tables are globally computed
758 # In a true separate compiler (a with dynamic loading) you cannot do this unfortnally
759 fun compile_class_to_c
(mclass
: MClass)
761 var mtype
= mclass
.intro
.bound_mtype
762 var c_name
= mclass
.c_name
764 var vft
= self.method_tables
[mclass
]
765 var attrs
= self.attr_tables
[mclass
]
768 var rta
= runtime_type_analysis
769 var is_dead
= rta
!= null and not rta
.live_classes
.has
(mclass
) and mtype
.ctype
== "val*" and mclass
.name
!= "NativeArray" and mclass
.name
!= "Pointer"
771 v
.add_decl
("/* runtime class {c_name} */")
775 self.provide_declaration
("class_{c_name}", "extern const struct class class_{c_name};")
776 v
.add_decl
("const struct class class_{c_name} = \{")
777 v
.add_decl
("{self.box_kind_of(mclass)}, /* box_kind */")
779 for i
in [0 .. vft
.length
[ do
780 var mpropdef
= vft
[i
]
781 if mpropdef
== null then
782 v
.add_decl
("NULL, /* empty */")
784 assert mpropdef
isa MMethodDef
785 if rta
!= null and not rta
.live_methoddefs
.has
(mpropdef
) then
786 v
.add_decl
("NULL, /* DEAD {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
789 var rf
= mpropdef
.virtual_runtime_function
790 v
.require_declaration
(rf
.c_name
)
791 v
.add_decl
("(nitmethod_t){rf.c_name}, /* pointer to {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
798 if mtype
.ctype
!= "val*" or mtype
.mclass
.name
== "Pointer" then
799 # Is a primitive type or the Pointer class, not any other extern class
801 #Build instance struct
802 self.header
.add_decl
("struct instance_{c_name} \{")
803 self.header
.add_decl
("const struct type *type;")
804 self.header
.add_decl
("const struct class *class;")
805 self.header
.add_decl
("{mtype.ctype_extern} value;")
806 self.header
.add_decl
("\};")
808 if not rta
.live_types
.has
(mtype
) and mtype
.mclass
.name
!= "Pointer" then return
811 self.provide_declaration
("BOX_{c_name}", "val* BOX_{c_name}({mtype.ctype_extern});")
812 v
.add_decl
("/* allocate {mtype} */")
813 v
.add_decl
("val* BOX_{mtype.c_name}({mtype.ctype_extern} value) \{")
814 v
.add
("struct instance_{c_name}*res = nit_alloc(sizeof(struct instance_{c_name}));")
815 v
.compiler
.undead_types
.add
(mtype
)
816 v
.require_declaration
("type_{c_name}")
817 v
.add
("res->type = &type_{c_name};")
818 v
.require_declaration
("class_{c_name}")
819 v
.add
("res->class = &class_{c_name};")
820 v
.add
("res->value = value;")
821 v
.add
("return (val*)res;")
824 if mtype
.mclass
.name
!= "Pointer" then return
827 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
828 v
.add_decl
("/* allocate {mtype} */")
829 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
831 v
.add_abort
("{mclass} is DEAD")
833 var res
= v
.new_named_var
(mtype
, "self")
835 v
.add
("{res} = nit_alloc(sizeof(struct instance_{mtype.c_name}));")
836 v
.add
("{res}->type = type;")
837 hardening_live_type
(v
, "type")
838 v
.require_declaration
("class_{c_name}")
839 v
.add
("{res}->class = &class_{c_name};")
840 v
.add
("((struct instance_{mtype.c_name}*){res})->value = NULL;")
841 v
.add
("return {res};")
845 else if mclass
.name
== "NativeArray" then
846 #Build instance struct
847 self.header
.add_decl
("struct instance_{c_name} \{")
848 self.header
.add_decl
("const struct type *type;")
849 self.header
.add_decl
("const struct class *class;")
850 # NativeArrays are just a instance header followed by a length and an array of values
851 self.header
.add_decl
("int length;")
852 self.header
.add_decl
("val* values[0];")
853 self.header
.add_decl
("\};")
856 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(int length, const struct type* type);")
857 v
.add_decl
("/* allocate {mtype} */")
858 v
.add_decl
("{mtype.ctype} NEW_{c_name}(int length, const struct type* type) \{")
859 var res
= v
.get_name
("self")
860 v
.add_decl
("struct instance_{c_name} *{res};")
861 var mtype_elt
= mtype
.arguments
.first
862 v
.add
("{res} = nit_alloc(sizeof(struct instance_{c_name}) + length*sizeof({mtype_elt.ctype}));")
863 v
.add
("{res}->type = type;")
864 hardening_live_type
(v
, "type")
865 v
.require_declaration
("class_{c_name}")
866 v
.add
("{res}->class = &class_{c_name};")
867 v
.add
("{res}->length = length;")
868 v
.add
("return (val*){res};")
871 else if mtype
.mclass
.kind
== extern_kind
and mtype
.mclass
.name
!= "NativeString" then
872 # Is an extern class (other than Pointer and NativeString)
873 # Pointer is caught in a previous `if`, and NativeString is internal
875 var pointer_type
= mainmodule
.pointer_type
877 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
878 v
.add_decl
("/* allocate {mtype} */")
879 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
881 v
.add_abort
("{mclass} is DEAD")
883 var res
= v
.new_named_var
(mtype
, "self")
885 v
.add
("{res} = nit_alloc(sizeof(struct instance_{pointer_type.c_name}));")
886 v
.add
("{res}->type = type;")
887 hardening_live_type
(v
, "type")
888 v
.require_declaration
("class_{c_name}")
889 v
.add
("{res}->class = &class_{c_name};")
890 v
.add
("((struct instance_{pointer_type.c_name}*){res})->value = NULL;")
891 v
.add
("return {res};")
898 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
899 v
.add_decl
("/* allocate {mtype} */")
900 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
902 v
.add_abort
("{mclass} is DEAD")
904 var res
= v
.new_named_var
(mtype
, "self")
906 v
.add
("{res} = nit_alloc(sizeof(struct instance) + {attrs.length}*sizeof(nitattribute_t));")
907 v
.add
("{res}->type = type;")
908 hardening_live_type
(v
, "type")
909 v
.require_declaration
("class_{c_name}")
910 v
.add
("{res}->class = &class_{c_name};")
911 self.generate_init_attr
(v
, res
, mtype
)
913 v
.add
("return {res};")
918 # Add a dynamic test to ensure that the type referenced by `t` is a live type
919 fun hardening_live_type
(v
: VISITOR, t
: String)
921 if not v
.compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
922 v
.add
("if({t} == NULL) \{")
923 v
.add_abort
("type null")
925 v
.add
("if({t}->table_size == 0) \{")
926 v
.add
("PRINT_ERROR(\"Insantiation of a dead
type: %s\\n\
", {t}->name);")
927 v
.add_abort
("type dead")
931 redef fun new_visitor
do return new SeparateCompilerVisitor(self)
935 private var type_tables
: Map[MType, Array[nullable MType]] = new HashMap[MType, Array[nullable MType]]
936 private var resolution_tables
: Map[MClassType, Array[nullable MType]] = new HashMap[MClassType, Array[nullable MType]]
937 protected var method_tables
: Map[MClass, Array[nullable MPropDef]] = new HashMap[MClass, Array[nullable MPropDef]]
938 protected var attr_tables
: Map[MClass, Array[nullable MPropDef]] = new HashMap[MClass, Array[nullable MPropDef]]
940 redef fun display_stats
943 if self.modelbuilder
.toolcontext
.opt_tables_metrics
.value
then
946 if self.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
949 var tc
= self.modelbuilder
.toolcontext
950 tc
.info
("# implementation of method invocation",2)
951 var nb_invok_total
= modelbuilder
.nb_invok_by_tables
+ modelbuilder
.nb_invok_by_direct
+ modelbuilder
.nb_invok_by_inline
952 tc
.info
("total number of invocations: {nb_invok_total}",2)
953 tc
.info
("invocations by VFT send: {modelbuilder.nb_invok_by_tables} ({div(modelbuilder.nb_invok_by_tables,nb_invok_total)}%)",2)
954 tc
.info
("invocations by direct call: {modelbuilder.nb_invok_by_direct} ({div(modelbuilder.nb_invok_by_direct,nb_invok_total)}%)",2)
955 tc
.info
("invocations by inlining: {modelbuilder.nb_invok_by_inline} ({div(modelbuilder.nb_invok_by_inline,nb_invok_total)}%)",2)
960 print
"# size of subtyping tables"
961 print
"\ttotal \tholes"
964 for t
, table
in type_tables
do
965 total
+= table
.length
966 for e
in table
do if e
== null then holes
+= 1
968 print
"\t{total}\t{holes}"
970 print
"# size of resolution tables"
971 print
"\ttotal \tholes"
974 for t
, table
in resolution_tables
do
975 total
+= table
.length
976 for e
in table
do if e
== null then holes
+= 1
978 print
"\t{total}\t{holes}"
980 print
"# size of methods tables"
981 print
"\ttotal \tholes"
984 for t
, table
in method_tables
do
985 total
+= table
.length
986 for e
in table
do if e
== null then holes
+= 1
988 print
"\t{total}\t{holes}"
990 print
"# size of attributes tables"
991 print
"\ttotal \tholes"
994 for t
, table
in attr_tables
do
995 total
+= table
.length
996 for e
in table
do if e
== null then holes
+= 1
998 print
"\t{total}\t{holes}"
1001 protected var isset_checks_count
= 0
1002 protected var attr_read_count
= 0
1004 fun display_isset_checks
do
1005 print
"# total number of compiled attribute reads"
1006 print
"\t{attr_read_count}"
1007 print
"# total number of compiled isset-checks"
1008 print
"\t{isset_checks_count}"
1011 redef fun compile_nitni_structs
1013 self.header
.add_decl
"""
1014 struct nitni_instance \{
1015 struct nitni_instance *next,
1016 *prev; /* adjacent global references in global list */
1017 int count; /* number of time this global reference has been marked */
1018 struct instance *value;
1024 redef fun finalize_ffi_for_module
(mmodule
)
1026 var old_module
= self.mainmodule
1027 self.mainmodule
= mmodule
1029 self.mainmodule
= old_module
1033 # A visitor on the AST of property definition that generate the C code of a separate compilation process.
1034 class SeparateCompilerVisitor
1035 super AbstractCompilerVisitor
1037 redef type COMPILER: SeparateCompiler
1039 redef fun adapt_signature
(m
, args
)
1041 var msignature
= m
.msignature
.resolve_for
(m
.mclassdef
.bound_mtype
, m
.mclassdef
.bound_mtype
, m
.mclassdef
.mmodule
, true)
1042 var recv
= args
.first
1043 if recv
.mtype
.ctype
!= m
.mclassdef
.mclass
.mclass_type
.ctype
then
1044 args
.first
= self.autobox
(args
.first
, m
.mclassdef
.mclass
.mclass_type
)
1046 for i
in [0..msignature
.arity
[ do
1047 var t
= msignature
.mparameters
[i
].mtype
1048 if i
== msignature
.vararg_rank
then
1051 args
[i
+1] = self.autobox
(args
[i
+1], t
)
1055 redef fun unbox_signature_extern
(m
, args
)
1057 var msignature
= m
.msignature
.resolve_for
(m
.mclassdef
.bound_mtype
, m
.mclassdef
.bound_mtype
, m
.mclassdef
.mmodule
, true)
1058 if not m
.mproperty
.is_init
and m
.is_extern
then
1059 args
.first
= self.unbox_extern
(args
.first
, m
.mclassdef
.mclass
.mclass_type
)
1061 for i
in [0..msignature
.arity
[ do
1062 var t
= msignature
.mparameters
[i
].mtype
1063 if i
== msignature
.vararg_rank
then
1066 if m
.is_extern
then args
[i
+1] = self.unbox_extern
(args
[i
+1], t
)
1070 redef fun autobox
(value
, mtype
)
1072 if value
.mtype
== mtype
then
1074 else if value
.mtype
.ctype
== "val*" and mtype
.ctype
== "val*" then
1076 else if value
.mtype
.ctype
== "val*" then
1077 return self.new_expr
("((struct instance_{mtype.c_name}*){value})->value; /* autounbox from {value.mtype} to {mtype} */", mtype
)
1078 else if mtype
.ctype
== "val*" then
1079 var valtype
= value
.mtype
.as(MClassType)
1080 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and mtype
.mclass
.name
!= "NativeString" then
1081 valtype
= compiler
.mainmodule
.pointer_type
1083 var res
= self.new_var
(mtype
)
1084 if compiler
.runtime_type_analysis
!= null and not compiler
.runtime_type_analysis
.live_types
.has
(valtype
) then
1085 self.add
("/*no autobox from {value.mtype} to {mtype}: {value.mtype} is not live! */")
1086 self.add
("PRINT_ERROR(\"Dead code executed
!\\n\
"); show_backtrace(1);")
1089 self.require_declaration
("BOX_{valtype.c_name}")
1090 self.add
("{res} = BOX_{valtype.c_name}({value}); /* autobox from {value.mtype} to {mtype} */")
1092 else if (value
.mtype
.ctype
== "void*" and mtype
.ctype
== "void*") or
1093 (value
.mtype
.ctype
== "char*" and mtype
.ctype
== "void*") or
1094 (value
.mtype
.ctype
== "void*" and mtype
.ctype
== "char*") then
1097 # Bad things will appen!
1098 var res
= self.new_var
(mtype
)
1099 self.add
("/* {res} left unintialized (cannot convert {value.mtype} to {mtype}) */")
1100 self.add
("PRINT_ERROR(\"Cast error
: Cannot cast
%s to
%s
.\\n\
", \"{value.mtype}\
", \"{mtype}\
"); show_backtrace(1);")
1105 redef fun unbox_extern
(value
, mtype
)
1107 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and
1108 mtype
.mclass
.name
!= "NativeString" then
1109 var pointer_type
= compiler
.mainmodule
.pointer_type
1110 var res
= self.new_var_extern
(mtype
)
1111 self.add
"{res} = ((struct instance_{pointer_type.c_name}*){value})->value; /* unboxing {value.mtype} */"
1118 redef fun box_extern
(value
, mtype
)
1120 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and
1121 mtype
.mclass
.name
!= "NativeString" then
1122 var valtype
= compiler
.mainmodule
.pointer_type
1123 var res
= self.new_var
(mtype
)
1124 if compiler
.runtime_type_analysis
!= null and not compiler
.runtime_type_analysis
.live_types
.has
(value
.mtype
.as(MClassType)) then
1125 self.add
("/*no boxing of {value.mtype}: {value.mtype} is not live! */")
1126 self.add
("PRINT_ERROR(\"Dead code executed
!\\n\
"); show_backtrace(1);")
1129 self.require_declaration
("BOX_{valtype.c_name}")
1130 self.add
("{res} = BOX_{valtype.c_name}({value}); /* boxing {value.mtype} */")
1131 self.require_declaration
("type_{mtype.c_name}")
1132 self.add
("{res}->type = &type_{mtype.c_name};")
1133 self.require_declaration
("class_{mtype.c_name}")
1134 self.add
("{res}->class = &class_{mtype.c_name};")
1141 # Return a C expression returning the runtime type structure of the value
1142 # The point of the method is to works also with primitives types.
1143 fun type_info
(value
: RuntimeVariable): String
1145 if value
.mtype
.ctype
== "val*" then
1146 return "{value}->type"
1148 compiler
.undead_types
.add
(value
.mtype
)
1149 self.require_declaration
("type_{value.mtype.c_name}")
1150 return "(&type_{value.mtype.c_name})"
1154 redef fun compile_callsite
(callsite
, args
)
1156 var rta
= compiler
.runtime_type_analysis
1157 var mmethod
= callsite
.mproperty
1158 # TODO: Inlining of new-style constructors with initializers
1159 if compiler
.modelbuilder
.toolcontext
.opt_direct_call_monomorph
.value
and rta
!= null and callsite
.mpropdef
.initializers
.is_empty
then
1160 var tgs
= rta
.live_targets
(callsite
)
1161 if tgs
.length
== 1 then
1163 var res0
= before_send
(mmethod
, args
)
1164 var res
= call
(tgs
.first
, tgs
.first
.mclassdef
.bound_mtype
, args
)
1165 if res0
!= null then
1167 self.assign
(res0
, res
)
1170 add
("\}") # close the before_send
1176 redef fun send
(mmethod
, arguments
)
1178 if arguments
.first
.mcasttype
.ctype
!= "val*" then
1179 # In order to shortcut the primitive, we need to find the most specific method
1180 # Howverr, because of performance (no flattening), we always work on the realmainmodule
1181 var m
= self.compiler
.mainmodule
1182 self.compiler
.mainmodule
= self.compiler
.realmainmodule
1183 var res
= self.monomorphic_send
(mmethod
, arguments
.first
.mcasttype
, arguments
)
1184 self.compiler
.mainmodule
= m
1188 return table_send
(mmethod
, arguments
, mmethod
)
1191 # Handle common special cases before doing the effective method invocation
1192 # This methods handle the `==` and `!=` methods and the case of the null receiver.
1193 # Note: a { is open in the generated C, that enclose and protect the effective method invocation.
1194 # Client must not forget to close the } after them.
1196 # The value returned is the result of the common special cases.
1197 # If not null, client must compile it with the result of their own effective method invocation.
1199 # If `before_send` can shortcut the whole message sending, a dummy `if(0){`
1200 # is generated to cancel the effective method invocation that will follow
1201 # TODO: find a better approach
1202 private fun before_send
(mmethod
: MMethod, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable
1204 var res
: nullable RuntimeVariable = null
1205 var recv
= arguments
.first
1206 var consider_null
= not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_null
.value
or mmethod
.name
== "==" or mmethod
.name
== "!="
1207 var maybenull
= (recv
.mcasttype
isa MNullableType or recv
.mcasttype
isa MNullType) and consider_null
1209 self.add
("if ({recv} == NULL) \{")
1210 if mmethod
.name
== "==" or mmethod
.name
== "is_same_instance" then
1211 res
= self.new_var
(bool_type
)
1212 var arg
= arguments
[1]
1213 if arg
.mcasttype
isa MNullableType then
1214 self.add
("{res} = ({arg} == NULL);")
1215 else if arg
.mcasttype
isa MNullType then
1216 self.add
("{res} = 1; /* is null */")
1218 self.add
("{res} = 0; /* {arg.inspect} cannot be null */")
1220 else if mmethod
.name
== "!=" then
1221 res
= self.new_var
(bool_type
)
1222 var arg
= arguments
[1]
1223 if arg
.mcasttype
isa MNullableType then
1224 self.add
("{res} = ({arg} != NULL);")
1225 else if arg
.mcasttype
isa MNullType then
1226 self.add
("{res} = 0; /* is null */")
1228 self.add
("{res} = 1; /* {arg.inspect} cannot be null */")
1231 self.add_abort
("Receiver is null")
1233 self.add
("\} else \{")
1237 if not self.compiler
.modelbuilder
.toolcontext
.opt_no_shortcut_equate
.value
and (mmethod
.name
== "==" or mmethod
.name
== "!=" or mmethod
.name
== "is_same_instance") then
1238 # Recv is not null, thus if arg is, it is easy to conclude (and respect the invariants)
1239 var arg
= arguments
[1]
1240 if arg
.mcasttype
isa MNullType then
1241 if res
== null then res
= self.new_var
(bool_type
)
1242 if mmethod
.name
== "!=" then
1243 self.add
("{res} = 1; /* arg is null and recv is not */")
1244 else # `==` and `is_same_instance`
1245 self.add
("{res} = 0; /* arg is null but recv is not */")
1247 self.add
("\}") # closes the null case
1248 self.add
("if (0) \{") # what follow is useless, CC will drop it
1254 private fun table_send
(mmethod
: MMethod, arguments
: Array[RuntimeVariable], mentity
: MEntity): nullable RuntimeVariable
1256 compiler
.modelbuilder
.nb_invok_by_tables
+= 1
1257 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_tables++;")
1259 assert arguments
.length
== mmethod
.intro
.msignature
.arity
+ 1 else debug
("Invalid arity for {mmethod}. {arguments.length} arguments given.")
1260 var recv
= arguments
.first
1262 var res0
= before_send
(mmethod
, arguments
)
1264 var runtime_function
= mmethod
.intro
.virtual_runtime_function
1265 var msignature
= runtime_function
.called_signature
1267 var res
: nullable RuntimeVariable
1268 var ret
= msignature
.return_mtype
1272 res
= self.new_var
(ret
)
1275 var ss
= new FlatBuffer
1278 for i
in [0..msignature
.arity
[ do
1279 var a
= arguments
[i
+1]
1280 var t
= msignature
.mparameters
[i
].mtype
1281 if i
== msignature
.vararg_rank
then
1282 t
= arguments
[i
+1].mcasttype
1284 a
= self.autobox
(a
, t
)
1288 var const_color
= mentity
.const_color
1295 if mentity
isa MMethod and compiler
.modelbuilder
.toolcontext
.opt_guard_call
.value
then
1296 var callsym
= "CALL_" + const_color
1297 self.require_declaration
(callsym
)
1298 self.add
"if (!{callsym}) \{"
1299 self.require_declaration
(const_color
)
1300 self.add
"{ress}(({runtime_function.c_funptrtype})({arguments.first}->class->vft[{const_color}]))({ss}); /* {mmethod} on {arguments.first.inspect}*/"
1301 self.add
"\} else \{"
1302 self.add
"{ress}{callsym}({ss}); /* {mmethod} on {arguments.first.inspect}*/"
1304 else if mentity
isa MMethod and compiler
.modelbuilder
.toolcontext
.opt_trampoline_call
.value
then
1305 var callsym
= "CALL_" + const_color
1306 self.require_declaration
(callsym
)
1307 self.add
"{ress}{callsym}({ss}); /* {mmethod} on {arguments.first.inspect}*/"
1309 self.require_declaration
(const_color
)
1310 self.add
"{ress}(({runtime_function.c_funptrtype})({arguments.first}->class->vft[{const_color}]))({ss}); /* {mmethod} on {arguments.first.inspect}*/"
1313 if res0
!= null then
1319 self.add
("\}") # closes the null case
1324 redef fun call
(mmethoddef
, recvtype
, arguments
)
1326 assert arguments
.length
== mmethoddef
.msignature
.arity
+ 1 else debug
("Invalid arity for {mmethoddef}. {arguments.length} arguments given.")
1328 var res
: nullable RuntimeVariable
1329 var ret
= mmethoddef
.msignature
.return_mtype
1333 ret
= ret
.resolve_for
(mmethoddef
.mclassdef
.bound_mtype
, mmethoddef
.mclassdef
.bound_mtype
, mmethoddef
.mclassdef
.mmodule
, true)
1334 res
= self.new_var
(ret
)
1337 if (mmethoddef
.is_intern
and not compiler
.modelbuilder
.toolcontext
.opt_no_inline_intern
.value
) or
1338 (compiler
.modelbuilder
.toolcontext
.opt_inline_some_methods
.value
and mmethoddef
.can_inline
(self)) then
1339 compiler
.modelbuilder
.nb_invok_by_inline
+= 1
1340 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_inline++;")
1341 var frame
= new StaticFrame(self, mmethoddef
, recvtype
, arguments
)
1342 frame
.returnlabel
= self.get_name
("RET_LABEL")
1343 frame
.returnvar
= res
1344 var old_frame
= self.frame
1346 self.add
("\{ /* Inline {mmethoddef} ({arguments.join(",")}) on {arguments.first.inspect} */")
1347 mmethoddef
.compile_inside_to_c
(self, arguments
)
1348 self.add
("{frame.returnlabel.as(not null)}:(void)0;")
1350 self.frame
= old_frame
1353 compiler
.modelbuilder
.nb_invok_by_direct
+= 1
1354 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_direct++;")
1357 self.adapt_signature
(mmethoddef
, arguments
)
1359 self.require_declaration
(mmethoddef
.c_name
)
1361 self.add
("{mmethoddef.c_name}({arguments.join(", ")}); /* Direct call {mmethoddef} on {arguments.first.inspect}*/")
1364 self.add
("{res} = {mmethoddef.c_name}({arguments.join(", ")});")
1370 redef fun supercall
(m
: MMethodDef, recvtype
: MClassType, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable
1372 if arguments
.first
.mcasttype
.ctype
!= "val*" then
1373 # In order to shortcut the primitive, we need to find the most specific method
1374 # However, because of performance (no flattening), we always work on the realmainmodule
1375 var main
= self.compiler
.mainmodule
1376 self.compiler
.mainmodule
= self.compiler
.realmainmodule
1377 var res
= self.monomorphic_super_send
(m
, recvtype
, arguments
)
1378 self.compiler
.mainmodule
= main
1381 return table_send
(m
.mproperty
, arguments
, m
)
1384 redef fun vararg_instance
(mpropdef
, recv
, varargs
, elttype
)
1386 # A vararg must be stored into an new array
1387 # The trick is that the dymaic type of the array may depends on the receiver
1388 # of the method (ie recv) if the static type is unresolved
1389 # This is more complex than usual because the unresolved type must not be resolved
1390 # with the current receiver (ie self).
1391 # Therefore to isolate the resolution from self, a local StaticFrame is created.
1392 # One can see this implementation as an inlined method of the receiver whose only
1393 # job is to allocate the array
1394 var old_frame
= self.frame
1395 var frame
= new StaticFrame(self, mpropdef
, mpropdef
.mclassdef
.bound_mtype
, [recv
])
1397 #print "required Array[{elttype}] for recv {recv.inspect}. bound=Array[{self.resolve_for(elttype, recv)}]. selfvar={frame.arguments.first.inspect}"
1398 var res
= self.array_instance
(varargs
, elttype
)
1399 self.frame
= old_frame
1403 redef fun isset_attribute
(a
, recv
)
1405 self.check_recv_notnull
(recv
)
1406 var res
= self.new_var
(bool_type
)
1408 # What is the declared type of the attribute?
1409 var mtype
= a
.intro
.static_mtype
.as(not null)
1410 var intromclassdef
= a
.intro
.mclassdef
1411 mtype
= mtype
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1413 if mtype
isa MNullableType then
1414 self.add
("{res} = 1; /* easy isset: {a} on {recv.inspect} */")
1418 self.require_declaration
(a
.const_color
)
1419 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1420 self.add
("{res} = {recv}->attrs[{a.const_color}] != NULL; /* {a} on {recv.inspect}*/")
1423 if mtype
.ctype
== "val*" then
1424 self.add
("{res} = {recv}->attrs[{a.const_color}].val != NULL; /* {a} on {recv.inspect} */")
1426 self.add
("{res} = 1; /* NOT YET IMPLEMENTED: isset of primitives: {a} on {recv.inspect} */")
1432 redef fun read_attribute
(a
, recv
)
1434 self.check_recv_notnull
(recv
)
1436 # What is the declared type of the attribute?
1437 var ret
= a
.intro
.static_mtype
.as(not null)
1438 var intromclassdef
= a
.intro
.mclassdef
1439 ret
= ret
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1441 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1442 self.compiler
.attr_read_count
+= 1
1443 self.add
("count_attr_reads++;")
1446 self.require_declaration
(a
.const_color
)
1447 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1448 # Get the attribute or a box (ie. always a val*)
1449 var cret
= self.object_type
.as_nullable
1450 var res
= self.new_var
(cret
)
1453 self.add
("{res} = {recv}->attrs[{a.const_color}]; /* {a} on {recv.inspect} */")
1455 # Check for Uninitialized attribute
1456 if not ret
isa MNullableType and not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_attr_isset
.value
then
1457 self.add
("if (unlikely({res} == NULL)) \{")
1458 self.add_abort
("Uninitialized attribute {a.name}")
1461 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1462 self.compiler
.isset_checks_count
+= 1
1463 self.add
("count_isset_checks++;")
1467 # Return the attribute or its unboxed version
1468 # Note: it is mandatory since we reuse the box on write, we do not whant that the box escapes
1469 return self.autobox
(res
, ret
)
1471 var res
= self.new_var
(ret
)
1472 self.add
("{res} = {recv}->attrs[{a.const_color}].{ret.ctypename}; /* {a} on {recv.inspect} */")
1474 # Check for Uninitialized attribute
1475 if ret
.ctype
== "val*" and not ret
isa MNullableType and not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_attr_isset
.value
then
1476 self.add
("if (unlikely({res} == NULL)) \{")
1477 self.add_abort
("Uninitialized attribute {a.name}")
1479 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1480 self.compiler
.isset_checks_count
+= 1
1481 self.add
("count_isset_checks++;")
1489 redef fun write_attribute
(a
, recv
, value
)
1491 self.check_recv_notnull
(recv
)
1493 # What is the declared type of the attribute?
1494 var mtype
= a
.intro
.static_mtype
.as(not null)
1495 var intromclassdef
= a
.intro
.mclassdef
1496 mtype
= mtype
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1498 # Adapt the value to the declared type
1499 value
= self.autobox
(value
, mtype
)
1501 self.require_declaration
(a
.const_color
)
1502 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1503 var attr
= "{recv}->attrs[{a.const_color}]"
1504 if mtype
.ctype
!= "val*" then
1505 assert mtype
isa MClassType
1506 # The attribute is primitive, thus we store it in a box
1507 # The trick is to create the box the first time then resuse the box
1508 self.add
("if ({attr} != NULL) \{")
1509 self.add
("((struct instance_{mtype.c_name}*){attr})->value = {value}; /* {a} on {recv.inspect} */")
1510 self.add
("\} else \{")
1511 value
= self.autobox
(value
, self.object_type
.as_nullable
)
1512 self.add
("{attr} = {value}; /* {a} on {recv.inspect} */")
1515 # The attribute is not primitive, thus store it direclty
1516 self.add
("{attr} = {value}; /* {a} on {recv.inspect} */")
1519 self.add
("{recv}->attrs[{a.const_color}].{mtype.ctypename} = {value}; /* {a} on {recv.inspect} */")
1523 # Check that mtype is a live open type
1524 fun hardening_live_open_type
(mtype
: MType)
1526 if not compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
1527 self.require_declaration
(mtype
.const_color
)
1528 var col
= mtype
.const_color
1529 self.add
("if({col} == -1) \{")
1530 self.add
("PRINT_ERROR(\"Resolution of a dead open
type: %s\\n\
", \"{mtype.to_s.escape_to_c}\
");")
1531 self.add_abort
("open type dead")
1535 # Check that mtype it a pointer to a live cast type
1536 fun hardening_cast_type
(t
: String)
1538 if not compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
1539 add
("if({t} == NULL) \{")
1540 add_abort
("cast type null")
1542 add
("if({t}->id == -1 || {t}->color == -1) \{")
1543 add
("PRINT_ERROR(\"Try to cast on a dead cast
type: %s\\n\
", {t}->name);")
1544 add_abort
("cast type dead")
1548 redef fun init_instance
(mtype
)
1550 self.require_declaration
("NEW_{mtype.mclass.c_name}")
1551 var compiler
= self.compiler
1552 if mtype
isa MGenericType and mtype
.need_anchor
then
1553 hardening_live_open_type
(mtype
)
1554 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1555 var recv
= self.frame
.arguments
.first
1556 var recv_type_info
= self.type_info
(recv
)
1557 self.require_declaration
(mtype
.const_color
)
1558 return self.new_expr
("NEW_{mtype.mclass.c_name}({recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype
)
1560 compiler
.undead_types
.add
(mtype
)
1561 self.require_declaration
("type_{mtype.c_name}")
1562 return self.new_expr
("NEW_{mtype.mclass.c_name}(&type_{mtype.c_name})", mtype
)
1565 redef fun type_test
(value
, mtype
, tag
)
1567 self.add
("/* {value.inspect} isa {mtype} */")
1568 var compiler
= self.compiler
1570 var recv
= self.frame
.arguments
.first
1571 var recv_type_info
= self.type_info
(recv
)
1573 var res
= self.new_var
(bool_type
)
1575 var cltype
= self.get_name
("cltype")
1576 self.add_decl
("int {cltype};")
1577 var idtype
= self.get_name
("idtype")
1578 self.add_decl
("int {idtype};")
1580 var maybe_null
= self.maybe_null
(value
)
1581 var accept_null
= "0"
1583 if ntype
isa MNullableType then
1588 if value
.mcasttype
.is_subtype
(self.frame
.mpropdef
.mclassdef
.mmodule
, self.frame
.mpropdef
.mclassdef
.bound_mtype
, mtype
) then
1589 self.add
("{res} = 1; /* easy {value.inspect} isa {mtype}*/")
1590 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1591 self.compiler
.count_type_test_skipped
[tag
] += 1
1592 self.add
("count_type_test_skipped_{tag}++;")
1597 if ntype
.need_anchor
then
1598 var type_struct
= self.get_name
("type_struct")
1599 self.add_decl
("const struct type* {type_struct};")
1601 # Either with resolution_table with a direct resolution
1602 hardening_live_open_type
(mtype
)
1603 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1604 self.require_declaration
(mtype
.const_color
)
1605 self.add
("{type_struct} = {recv_type_info}->resolution_table->types[{mtype.const_color}];")
1606 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1607 self.compiler
.count_type_test_unresolved
[tag
] += 1
1608 self.add
("count_type_test_unresolved_{tag}++;")
1610 hardening_cast_type
(type_struct
)
1611 self.add
("{cltype} = {type_struct}->color;")
1612 self.add
("{idtype} = {type_struct}->id;")
1613 if maybe_null
and accept_null
== "0" then
1614 var is_nullable
= self.get_name
("is_nullable")
1615 self.add_decl
("short int {is_nullable};")
1616 self.add
("{is_nullable} = {type_struct}->is_nullable;")
1617 accept_null
= is_nullable
.to_s
1619 else if ntype
isa MClassType then
1620 compiler
.undead_types
.add
(mtype
)
1621 self.require_declaration
("type_{mtype.c_name}")
1622 hardening_cast_type
("(&type_{mtype.c_name})")
1623 self.add
("{cltype} = type_{mtype.c_name}.color;")
1624 self.add
("{idtype} = type_{mtype.c_name}.id;")
1625 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1626 self.compiler
.count_type_test_resolved
[tag
] += 1
1627 self.add
("count_type_test_resolved_{tag}++;")
1630 self.add
("PRINT_ERROR(\"NOT YET IMPLEMENTED: type_test
(%s
, {mtype}).\\n\
", \"{value.inspect}\
"); show_backtrace(1);")
1633 # check color is in table
1635 self.add
("if({value} == NULL) \{")
1636 self.add
("{res} = {accept_null};")
1637 self.add
("\} else \{")
1639 var value_type_info
= self.type_info
(value
)
1640 self.add
("if({cltype} >= {value_type_info}->table_size) \{")
1641 self.add
("{res} = 0;")
1642 self.add
("\} else \{")
1643 self.add
("{res} = {value_type_info}->type_table[{cltype}] == {idtype};")
1652 redef fun is_same_type_test
(value1
, value2
)
1654 var res
= self.new_var
(bool_type
)
1655 # Swap values to be symetric
1656 if value2
.mtype
.ctype
!= "val*" and value1
.mtype
.ctype
== "val*" then
1661 if value1
.mtype
.ctype
!= "val*" then
1662 if value2
.mtype
== value1
.mtype
then
1663 self.add
("{res} = 1; /* is_same_type_test: compatible types {value1.mtype} vs. {value2.mtype} */")
1664 else if value2
.mtype
.ctype
!= "val*" then
1665 self.add
("{res} = 0; /* is_same_type_test: incompatible types {value1.mtype} vs. {value2.mtype}*/")
1667 var mtype1
= value1
.mtype
.as(MClassType)
1668 self.require_declaration
("class_{mtype1.c_name}")
1669 self.add
("{res} = ({value2} != NULL) && ({value2}->class == &class_{mtype1.c_name}); /* is_same_type_test */")
1672 self.add
("{res} = ({value1} == {value2}) || ({value1} != NULL && {value2} != NULL && {value1}->class == {value2}->class); /* is_same_type_test */")
1677 redef fun class_name_string
(value
)
1679 var res
= self.get_name
("var_class_name")
1680 self.add_decl
("const char* {res};")
1681 if value
.mtype
.ctype
== "val*" then
1682 self.add
"{res} = {value} == NULL ? \"null\
" : {value}->type->name;"
1683 else if value
.mtype
isa MClassType and value
.mtype
.as(MClassType).mclass
.kind
== extern_kind
and
1684 value
.mtype
.as(MClassType).name
!= "NativeString" then
1685 self.add
"{res} = \"{value.mtype.as(MClassType).mclass}\
";"
1687 self.require_declaration
("type_{value.mtype.c_name}")
1688 self.add
"{res} = type_{value.mtype.c_name}.name;"
1693 redef fun equal_test
(value1
, value2
)
1695 var res
= self.new_var
(bool_type
)
1696 if value2
.mtype
.ctype
!= "val*" and value1
.mtype
.ctype
== "val*" then
1701 if value1
.mtype
.ctype
!= "val*" then
1702 if value2
.mtype
== value1
.mtype
then
1703 self.add
("{res} = {value1} == {value2};")
1704 else if value2
.mtype
.ctype
!= "val*" then
1705 self.add
("{res} = 0; /* incompatible types {value1.mtype} vs. {value2.mtype}*/")
1707 var mtype1
= value1
.mtype
.as(MClassType)
1708 self.require_declaration
("class_{mtype1.c_name}")
1709 self.add
("{res} = ({value2} != NULL) && ({value2}->class == &class_{mtype1.c_name});")
1710 self.add
("if ({res}) \{")
1711 self.add
("{res} = ({self.autobox(value2, value1.mtype)} == {value1});")
1716 var maybe_null
= true
1717 var test
= new Array[String]
1718 var t1
= value1
.mcasttype
1719 if t1
isa MNullableType then
1720 test
.add
("{value1} != NULL")
1725 var t2
= value2
.mcasttype
1726 if t2
isa MNullableType then
1727 test
.add
("{value2} != NULL")
1733 var incompatible
= false
1735 if t1
.ctype
!= "val*" then
1738 # No need to compare class
1739 else if t2
.ctype
!= "val*" then
1741 else if can_be_primitive
(value2
) then
1742 test
.add
("{value1}->class == {value2}->class")
1746 else if t2
.ctype
!= "val*" then
1748 if can_be_primitive
(value1
) then
1749 test
.add
("{value1}->class == {value2}->class")
1757 if incompatible
then
1759 self.add
("{res} = {value1} == {value2}; /* incompatible types {t1} vs. {t2}; but may be NULL*/")
1762 self.add
("{res} = 0; /* incompatible types {t1} vs. {t2}; cannot be NULL */")
1766 if primitive
!= null then
1767 test
.add
("((struct instance_{primitive.c_name}*){value1})->value == ((struct instance_{primitive.c_name}*){value2})->value")
1768 else if can_be_primitive
(value1
) and can_be_primitive
(value2
) then
1769 test
.add
("{value1}->class == {value2}->class")
1770 var s
= new Array[String]
1771 for t
, v
in self.compiler
.box_kinds
do
1772 s
.add
"({value1}->class->box_kind == {v} && ((struct instance_{t.c_name}*){value1})->value == ((struct instance_{t.c_name}*){value2})->value)"
1774 test
.add
("({s.join(" || ")})")
1776 self.add
("{res} = {value1} == {value2};")
1779 self.add
("{res} = {value1} == {value2} || ({test.join(" && ")});")
1783 fun can_be_primitive
(value
: RuntimeVariable): Bool
1785 var t
= value
.mcasttype
.as_notnullable
1786 if not t
isa MClassType then return false
1787 var k
= t
.mclass
.kind
1788 return k
== interface_kind
or t
.ctype
!= "val*"
1791 fun maybe_null
(value
: RuntimeVariable): Bool
1793 var t
= value
.mcasttype
1794 return t
isa MNullableType or t
isa MNullType
1797 redef fun array_instance
(array
, elttype
)
1799 var nclass
= self.get_class
("NativeArray")
1800 var arrayclass
= self.get_class
("Array")
1801 var arraytype
= arrayclass
.get_mtype
([elttype
])
1802 var res
= self.init_instance
(arraytype
)
1803 self.add
("\{ /* {res} = array_instance Array[{elttype}] */")
1804 var length
= self.int_instance
(array
.length
)
1805 var nat
= native_array_instance
(elttype
, length
)
1806 for i
in [0..array
.length
[ do
1807 var r
= self.autobox
(array
[i
], self.object_type
)
1808 self.add
("((struct instance_{nclass.c_name}*){nat})->values[{i}] = (val*) {r};")
1810 self.send
(self.get_property
("with_native", arrayclass
.intro
.bound_mtype
), [res
, nat
, length
])
1815 redef fun native_array_instance
(elttype
: MType, length
: RuntimeVariable): RuntimeVariable
1817 var mtype
= self.get_class
("NativeArray").get_mtype
([elttype
])
1818 self.require_declaration
("NEW_{mtype.mclass.c_name}")
1819 assert mtype
isa MGenericType
1820 var compiler
= self.compiler
1821 if mtype
.need_anchor
then
1822 hardening_live_open_type
(mtype
)
1823 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1824 var recv
= self.frame
.arguments
.first
1825 var recv_type_info
= self.type_info
(recv
)
1826 self.require_declaration
(mtype
.const_color
)
1827 return self.new_expr
("NEW_{mtype.mclass.c_name}({length}, {recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype
)
1829 compiler
.undead_types
.add
(mtype
)
1830 self.require_declaration
("type_{mtype.c_name}")
1831 return self.new_expr
("NEW_{mtype.mclass.c_name}({length}, &type_{mtype.c_name})", mtype
)
1834 redef fun native_array_def
(pname
, ret_type
, arguments
)
1836 var elttype
= arguments
.first
.mtype
1837 var nclass
= self.get_class
("NativeArray")
1838 var recv
= "((struct instance_{nclass.c_name}*){arguments[0]})->values"
1839 if pname
== "[]" then
1840 self.ret
(self.new_expr
("{recv}[{arguments[1]}]", ret_type
.as(not null)))
1842 else if pname
== "[]=" then
1843 self.add
("{recv}[{arguments[1]}]={arguments[2]};")
1845 else if pname
== "length" then
1846 self.ret
(self.new_expr
("((struct instance_{nclass.c_name}*){arguments[0]})->length", ret_type
.as(not null)))
1848 else if pname
== "copy_to" then
1849 var recv1
= "((struct instance_{nclass.c_name}*){arguments[1]})->values"
1850 self.add
("memmove({recv1}, {recv}, {arguments[2]}*sizeof({elttype.ctype}));")
1855 redef fun calloc_array
(ret_type
, arguments
)
1857 var mclass
= self.get_class
("ArrayCapable")
1858 var ft
= mclass
.mparameters
.first
1859 var res
= self.native_array_instance
(ft
, arguments
[1])
1863 fun link_unresolved_type
(mclassdef
: MClassDef, mtype
: MType) do
1864 assert mtype
.need_anchor
1865 var compiler
= self.compiler
1866 if not compiler
.live_unresolved_types
.has_key
(self.frame
.mpropdef
.mclassdef
) then
1867 compiler
.live_unresolved_types
[self.frame
.mpropdef
.mclassdef
] = new HashSet[MType]
1869 compiler
.live_unresolved_types
[self.frame
.mpropdef
.mclassdef
].add
(mtype
)
1873 redef class MMethodDef
1874 # The C function associated to a mmethoddef
1875 fun separate_runtime_function
: SeparateRuntimeFunction
1877 var res
= self.separate_runtime_function_cache
1879 var recv
= mclassdef
.bound_mtype
1880 var msignature
= msignature
.resolve_for
(recv
, recv
, mclassdef
.mmodule
, true)
1881 res
= new SeparateRuntimeFunction(self, recv
, msignature
, c_name
)
1882 self.separate_runtime_function_cache
= res
1886 private var separate_runtime_function_cache
: nullable SeparateRuntimeFunction
1888 # The C function associated to a mmethoddef, that can be stored into a VFT of a class
1889 # The first parameter (the reciever) is always typed by val* in order to accept an object value
1890 # The C-signature is always compatible with the intro
1891 fun virtual_runtime_function
: SeparateRuntimeFunction
1893 var res
= self.virtual_runtime_function_cache
1895 # Because the function is virtual, the signature must match the one of the original class
1896 var intromclassdef
= mproperty
.intro
.mclassdef
1897 var recv
= intromclassdef
.bound_mtype
1899 res
= separate_runtime_function
1900 if res
.called_recv
== recv
then
1901 self.virtual_runtime_function_cache
= res
1905 var msignature
= mproperty
.intro
.msignature
.resolve_for
(recv
, recv
, intromclassdef
.mmodule
, true)
1907 if recv
.ctype
== res
.called_recv
.ctype
and msignature
.c_equiv
(res
.called_signature
) then
1908 self.virtual_runtime_function_cache
= res
1912 res
= new SeparateRuntimeFunction(self, recv
, msignature
, "VIRTUAL_{c_name}")
1913 self.virtual_runtime_function_cache
= res
1918 private var virtual_runtime_function_cache
: nullable SeparateRuntimeFunction
1921 redef class MSignature
1922 # Does the C-version of `self` the same than the C-version of `other`?
1923 fun c_equiv
(other
: MSignature): Bool
1925 if self == other
then return true
1926 if arity
!= other
.arity
then return false
1927 for i
in [0..arity
[ do
1928 if mparameters
[i
].mtype
.ctype
!= other
.mparameters
[i
].mtype
.ctype
then return false
1930 if return_mtype
!= other
.return_mtype
then
1931 if return_mtype
== null or other
.return_mtype
== null then return false
1932 if return_mtype
.ctype
!= other
.return_mtype
.ctype
then return false
1938 # The C function associated to a methoddef separately compiled
1939 class SeparateRuntimeFunction
1940 super AbstractRuntimeFunction
1942 # The call-side static receiver
1943 var called_recv
: MType
1945 # The call-side static signature
1946 var called_signature
: MSignature
1948 # The name on the compiled method
1949 redef var build_c_name
: String
1951 # Statically call the original body instead
1952 var is_thunk
= false
1954 redef fun to_s
do return self.mmethoddef
.to_s
1956 # The C return type (something or `void`)
1957 var c_ret
: String is lazy
do
1958 var ret
= called_signature
.return_mtype
1966 # The C signature (only the parmeter part)
1967 var c_sig
: String is lazy
do
1968 var sig
= new FlatBuffer
1969 sig
.append
("({called_recv.ctype} self")
1970 for i
in [0..called_signature
.arity
[ do
1971 var mtype
= called_signature
.mparameters
[i
].mtype
1972 if i
== called_signature
.vararg_rank
then
1973 mtype
= mmethoddef
.mclassdef
.mmodule
.get_primitive_class
("Array").get_mtype
([mtype
])
1975 sig
.append
(", {mtype.ctype} p{i}")
1981 # The C type for the function pointer.
1982 var c_funptrtype
: String is lazy
do return "{c_ret}(*){c_sig}"
1984 # The arguments, as generated by `compile_to_c`
1985 private var arguments
: Array[RuntimeVariable] is noinit
1987 redef fun compile_to_c
(compiler
)
1989 var mmethoddef
= self.mmethoddef
1991 var recv
= self.mmethoddef
.mclassdef
.bound_mtype
1992 var v
= compiler
.new_visitor
1993 var selfvar
= new RuntimeVariable("self", called_recv
, recv
)
1994 var arguments
= new Array[RuntimeVariable]
1995 var frame
= new StaticFrame(v
, mmethoddef
, recv
, arguments
)
1998 var msignature
= called_signature
1999 var ret
= called_signature
.return_mtype
2001 var sig
= new FlatBuffer
2002 var comment
= new FlatBuffer
2005 sig
.append
(self.c_name
)
2007 comment
.append
("({selfvar}: {selfvar.mtype}")
2008 arguments
.add
(selfvar
)
2009 for i
in [0..msignature
.arity
[ do
2010 var mtype
= msignature
.mparameters
[i
].mtype
2011 if i
== msignature
.vararg_rank
then
2012 mtype
= v
.get_class
("Array").get_mtype
([mtype
])
2014 comment
.append
(", {mtype}")
2015 var argvar
= new RuntimeVariable("p{i}", mtype
, mtype
)
2016 arguments
.add
(argvar
)
2020 comment
.append
(": {ret}")
2022 compiler
.provide_declaration
(self.c_name
, "{sig};")
2023 self.arguments
= arguments
.to_a
2025 v
.add_decl
("/* method {self} for {comment} */")
2026 v
.add_decl
("{sig} \{")
2028 frame
.returnvar
= v
.new_var
(ret
)
2030 frame
.returnlabel
= v
.get_name
("RET_LABEL")
2033 var subret
= v
.call
(mmethoddef
, recv
, arguments
)
2035 assert subret
!= null
2036 v
.assign
(frame
.returnvar
.as(not null), subret
)
2039 mmethoddef
.compile_inside_to_c
(v
, arguments
)
2042 v
.add
("{frame.returnlabel.as(not null)}:;")
2044 v
.add
("return {frame.returnvar.as(not null)};")
2047 compiler
.names
[self.c_name
] = "{mmethoddef.full_name} ({mmethoddef.location.file.filename}:{mmethoddef.location.line_start})"
2050 # Compile the trampolines used to implement late-binding.
2052 # See `opt_trampoline_call`.
2053 fun compile_trampolines
(compiler
: SeparateCompiler)
2055 var recv
= self.mmethoddef
.mclassdef
.bound_mtype
2056 var selfvar
= arguments
.first
2057 var ret
= called_signature
.return_mtype
2059 if mmethoddef
.is_intro
and recv
.ctype
== "val*" then
2060 var m
= mmethoddef
.mproperty
2061 var n2
= "CALL_" + m
.const_color
2062 compiler
.provide_declaration
(n2
, "{c_ret} {n2}{c_sig};")
2063 var v2
= compiler
.new_visitor
2064 v2
.add
"{c_ret} {n2}{c_sig} \{"
2065 v2
.require_declaration
(m
.const_color
)
2066 var call
= "(({c_funptrtype})({selfvar}->class->vft[{m.const_color}]))({arguments.join(", ")});"
2068 v2
.add
"return {call}"
2076 if mmethoddef
.has_supercall
and recv
.ctype
== "val*" then
2078 var n2
= "CALL_" + m
.const_color
2079 compiler
.provide_declaration
(n2
, "{c_ret} {n2}{c_sig};")
2080 var v2
= compiler
.new_visitor
2081 v2
.add
"{c_ret} {n2}{c_sig} \{"
2082 v2
.require_declaration
(m
.const_color
)
2083 var call
= "(({c_funptrtype})({selfvar}->class->vft[{m.const_color}]))({arguments.join(", ")});"
2085 v2
.add
"return {call}"
2096 var const_color
: String is lazy
do return "COLOR_{c_name}"
2099 interface PropertyLayoutElement end
2101 redef class MProperty
2102 super PropertyLayoutElement
2105 redef class MPropDef
2106 super PropertyLayoutElement
2109 redef class AMethPropdef
2110 # The semi-global compilation does not support inlining calls to extern news
2111 redef fun can_inline
2114 if m
!= null and m
.mproperty
.is_init
and m
.is_extern
then return false