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")
37 # --substitute-monomorph
38 var opt_substitute_monomorph
= new OptionBool("Replace monomorph trampoline with direct call (link-boost)", "--substitute-monomorph")
40 var opt_link_boost
= new OptionBool("Enable all link-boost optimizations", "--link-boost")
42 # --inline-coloring-numbers
43 var opt_inline_coloring_numbers
= new OptionBool("Inline colors and ids (semi-global)", "--inline-coloring-numbers")
44 # --inline-some-methods
45 var opt_inline_some_methods
= new OptionBool("Allow the separate compiler to inline some methods (semi-global)", "--inline-some-methods")
46 # --direct-call-monomorph
47 var opt_direct_call_monomorph
= new OptionBool("Allow the separate compiler to direct call monomorph sites (semi-global)", "--direct-call-monomorph")
49 var opt_skip_dead_methods
= new OptionBool("Do not compile dead methods (semi-global)", "--skip-dead-methods")
51 var opt_semi_global
= new OptionBool("Enable all semi-global optimizations", "--semi-global")
52 # --no-colo-dead-methods
53 var opt_colo_dead_methods
= new OptionBool("Force colorization of dead methods", "--colo-dead-methods")
55 var opt_tables_metrics
= new OptionBool("Enable static size measuring of tables used for vft, typing and resolution", "--tables-metrics")
60 self.option_context
.add_option
(self.opt_separate
)
61 self.option_context
.add_option
(self.opt_no_inline_intern
)
62 self.option_context
.add_option
(self.opt_no_union_attribute
)
63 self.option_context
.add_option
(self.opt_no_shortcut_equate
)
64 self.option_context
.add_option
(opt_colors_are_symbols
, opt_trampoline_call
, opt_substitute_monomorph
, opt_link_boost
)
65 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
)
66 self.option_context
.add_option
(self.opt_colo_dead_methods
)
67 self.option_context
.add_option
(self.opt_tables_metrics
)
70 redef fun process_options
(args
)
75 if tc
.opt_semi_global
.value
then
76 tc
.opt_inline_coloring_numbers
.value
= true
77 tc
.opt_inline_some_methods
.value
= true
78 tc
.opt_direct_call_monomorph
.value
= true
79 tc
.opt_skip_dead_methods
.value
= true
81 if tc
.opt_link_boost
.value
then
82 tc
.opt_colors_are_symbols
.value
= true
83 tc
.opt_substitute_monomorph
.value
= true
85 if tc
.opt_substitute_monomorph
.value
then
86 tc
.opt_trampoline_call
.value
= true
90 var separate_compiler_phase
= new SeparateCompilerPhase(self, null)
93 class SeparateCompilerPhase
95 redef fun process_mainmodule
(mainmodule
, given_mmodules
) do
96 if not toolcontext
.opt_separate
.value
then return
98 var modelbuilder
= toolcontext
.modelbuilder
99 var analysis
= modelbuilder
.do_rapid_type_analysis
(mainmodule
)
100 modelbuilder
.run_separate_compiler
(mainmodule
, analysis
)
104 redef class ModelBuilder
105 fun run_separate_compiler
(mainmodule
: MModule, runtime_type_analysis
: nullable RapidTypeAnalysis)
108 self.toolcontext
.info
("*** GENERATING C ***", 1)
110 var compiler
= new SeparateCompiler(mainmodule
, self, runtime_type_analysis
)
111 compiler
.do_compilation
112 compiler
.display_stats
115 self.toolcontext
.info
("*** END GENERATING C: {time1-time0} ***", 2)
116 write_and_make
(compiler
)
119 # Count number of invocations by VFT
120 private var nb_invok_by_tables
= 0
121 # Count number of invocations by direct call
122 private var nb_invok_by_direct
= 0
123 # Count number of invocations by inlining
124 private var nb_invok_by_inline
= 0
127 # Singleton that store the knowledge about the separate compilation process
128 class SeparateCompiler
129 super AbstractCompiler
131 redef type VISITOR: SeparateCompilerVisitor
133 # The result of the RTA (used to know live types and methods)
134 var runtime_type_analysis
: nullable RapidTypeAnalysis
136 private var undead_types
: Set[MType] = new HashSet[MType]
137 private var live_unresolved_types
: Map[MClassDef, Set[MType]] = new HashMap[MClassDef, HashSet[MType]]
139 private var type_ids
: Map[MType, Int] is noinit
140 private var type_colors
: Map[MType, Int] is noinit
141 private var opentype_colors
: Map[MType, Int] is noinit
142 protected var method_colors
: Map[PropertyLayoutElement, Int] is noinit
143 protected var attr_colors
: Map[MAttribute, Int] is noinit
146 var file
= new_file
("nit.common")
147 self.header
= new CodeWriter(file
)
148 self.compile_box_kinds
151 redef fun do_compilation
154 compiler
.compile_header
156 var c_name
= mainmodule
.c_name
158 # compile class structures
159 modelbuilder
.toolcontext
.info
("Property coloring", 2)
160 compiler
.new_file
("{c_name}.classes")
161 compiler
.do_property_coloring
162 for m
in mainmodule
.in_importation
.greaters
do
163 for mclass
in m
.intro_mclasses
do
164 #if mclass.kind == abstract_kind or mclass.kind == interface_kind then continue
165 compiler
.compile_class_to_c
(mclass
)
169 # The main function of the C
170 compiler
.new_file
("{c_name}.main")
171 compiler
.compile_nitni_global_ref_functions
172 compiler
.compile_main_function
173 compiler
.compile_finalizer_function
174 compiler
.link_mmethods
177 for m
in mainmodule
.in_importation
.greaters
do
178 modelbuilder
.toolcontext
.info
("Generate C for module {m.full_name}", 2)
179 compiler
.new_file
("{m.c_name}.sep")
180 compiler
.compile_module_to_c
(m
)
183 # compile live & cast type structures
184 modelbuilder
.toolcontext
.info
("Type coloring", 2)
185 compiler
.new_file
("{c_name}.types")
186 compiler
.compile_types
189 # Color and compile type structures and cast information
194 var mtypes
= compiler
.do_type_coloring
196 compiler
.compile_type_to_c
(t
)
198 # compile remaining types structures (useless but needed for the symbol resolution at link-time)
199 for t
in compiler
.undead_types
do
200 if mtypes
.has
(t
) then continue
201 compiler
.compile_type_to_c
(t
)
206 redef fun compile_header_structs
do
207 self.header
.add_decl
("typedef void(*nitmethod_t)(void); /* general C type representing a Nit method. */")
208 self.compile_header_attribute_structs
209 self.header
.add_decl
("struct class \{ int box_kind; nitmethod_t vft[]; \}; /* general C type representing a Nit class. */")
211 # With resolution_table_table, all live type resolution are stored in a big table: resolution_table
212 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. */")
213 self.header
.add_decl
("struct instance \{ const struct type *type; const struct class *class; nitattribute_t attrs[]; \}; /* general C type representing a Nit instance. */")
214 self.header
.add_decl
("struct types \{ int dummy; const struct type *types[]; \}; /* a list types (used for vts, fts and unresolved lists). */")
215 self.header
.add_decl
("typedef struct instance val; /* general C type representing a Nit instance. */")
218 fun compile_header_attribute_structs
220 if modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
221 self.header
.add_decl
("typedef void* nitattribute_t; /* general C type representing a Nit attribute. */")
223 self.header
.add_decl
("typedef union \{")
224 self.header
.add_decl
("void* val;")
225 for c
, v
in self.box_kinds
do
226 var t
= c
.mclass_type
228 # `Pointer` reuse the `val` field
229 if t
.mclass
.name
== "Pointer" then continue
231 self.header
.add_decl
("{t.ctype_extern} {t.ctypename};")
233 self.header
.add_decl
("\} nitattribute_t; /* general C type representing a Nit attribute. */")
237 fun compile_box_kinds
239 # Collect all bas box class
240 # FIXME: this is not completely fine with a separate compilation scheme
241 for classname
in ["Int", "Bool", "Char", "Float", "NativeString", "Pointer"] do
242 var classes
= self.mainmodule
.model
.get_mclasses_by_name
(classname
)
243 if classes
== null then continue
244 assert classes
.length
== 1 else print classes
.join
(", ")
245 self.box_kinds
[classes
.first
] = self.box_kinds
.length
+ 1
249 var box_kinds
= new HashMap[MClass, Int]
251 fun box_kind_of
(mclass
: MClass): Int
253 #var pointer_type = self.mainmodule.pointer_type
254 #if mclass.mclass_type.ctype == "val*" or mclass.mclass_type.is_subtype(self.mainmodule, mclass.mclass_type pointer_type) then
255 if mclass
.mclass_type
.ctype_extern
== "val*" then
257 else if mclass
.kind
== extern_kind
and mclass
.name
!= "NativeString" then
258 return self.box_kinds
[self.mainmodule
.get_primitive_class
("Pointer")]
260 return self.box_kinds
[mclass
]
265 fun compile_color_consts
(colors
: Map[Object, Int]) do
267 for m
, c
in colors
do
268 compile_color_const
(v
, m
, c
)
272 fun compile_color_const
(v
: SeparateCompilerVisitor, m
: Object, color
: Int) do
273 if color_consts_done
.has
(m
) then return
274 if m
isa MEntity then
275 if modelbuilder
.toolcontext
.opt_inline_coloring_numbers
.value
then
276 self.provide_declaration
(m
.const_color
, "#define {m.const_color} {color}")
277 else if not modelbuilder
.toolcontext
.opt_colors_are_symbols
.value
or not v
.compiler
.target_platform
.supports_linker_script
then
278 self.provide_declaration
(m
.const_color
, "extern const int {m.const_color};")
279 v
.add
("const int {m.const_color} = {color};")
281 # The color 'C' is the ``address'' of a false static variable 'XC'
282 self.provide_declaration
(m
.const_color
, "#define {m.const_color} ((long)&X{m.const_color})\nextern const void X{m.const_color};")
283 if color
== -1 then color
= 0 # Symbols cannot be negative, so just use 0 for dead things
284 # Teach the linker that the address of 'XC' is `color`.
285 linker_script
.add
("X{m.const_color} = {color};")
290 color_consts_done
.add
(m
)
293 private var color_consts_done
= new HashSet[Object]
295 # colorize classe properties
296 fun do_property_coloring
do
298 var rta
= runtime_type_analysis
301 var poset
= mainmodule
.flatten_mclass_hierarchy
302 var mclasses
= new HashSet[MClass].from
(poset
)
303 var colorer
= new POSetColorer[MClass]
304 colorer
.colorize
(poset
)
306 # The dead methods, still need to provide a dead color symbol
307 var dead_methods
= new Array[MMethod]
309 # lookup properties to build layout with
310 var mmethods
= new HashMap[MClass, Set[PropertyLayoutElement]]
311 var mattributes
= new HashMap[MClass, Set[MAttribute]]
312 for mclass
in mclasses
do
313 mmethods
[mclass
] = new HashSet[PropertyLayoutElement]
314 mattributes
[mclass
] = new HashSet[MAttribute]
315 for mprop
in self.mainmodule
.properties
(mclass
) do
316 if mprop
isa MMethod then
317 if not modelbuilder
.toolcontext
.opt_colo_dead_methods
.value
and rta
!= null and not rta
.live_methods
.has
(mprop
) then
318 dead_methods
.add
(mprop
)
321 mmethods
[mclass
].add
(mprop
)
322 else if mprop
isa MAttribute then
323 mattributes
[mclass
].add
(mprop
)
328 # Collect all super calls (dead or not)
329 var all_super_calls
= new HashSet[MMethodDef]
330 for mmodule
in self.mainmodule
.in_importation
.greaters
do
331 for mclassdef
in mmodule
.mclassdefs
do
332 for mpropdef
in mclassdef
.mpropdefs
do
333 if not mpropdef
isa MMethodDef then continue
334 if mpropdef
.has_supercall
then
335 all_super_calls
.add
(mpropdef
)
341 # lookup super calls and add it to the list of mmethods to build layout with
344 super_calls
= rta
.live_super_sends
346 super_calls
= all_super_calls
349 for mmethoddef
in super_calls
do
350 var mclass
= mmethoddef
.mclassdef
.mclass
351 mmethods
[mclass
].add
(mmethoddef
)
352 for descendant
in mclass
.in_hierarchy
(self.mainmodule
).smallers
do
353 mmethods
[descendant
].add
(mmethoddef
)
358 var meth_colorer
= new POSetBucketsColorer[MClass, PropertyLayoutElement](poset
, colorer
.conflicts
)
359 method_colors
= meth_colorer
.colorize
(mmethods
)
360 method_tables
= build_method_tables
(mclasses
, super_calls
)
361 compile_color_consts
(method_colors
)
363 # attribute null color to dead methods and supercalls
364 for mproperty
in dead_methods
do
365 compile_color_const
(new_visitor
, mproperty
, -1)
367 for mpropdef
in all_super_calls
do
368 if super_calls
.has
(mpropdef
) then continue
369 compile_color_const
(new_visitor
, mpropdef
, -1)
372 # attributes coloration
373 var attr_colorer
= new POSetBucketsColorer[MClass, MAttribute](poset
, colorer
.conflicts
)
374 attr_colors
= attr_colorer
.colorize
(mattributes
)
375 attr_tables
= build_attr_tables
(mclasses
)
376 compile_color_consts
(attr_colors
)
379 fun build_method_tables
(mclasses
: Set[MClass], super_calls
: Set[MMethodDef]): Map[MClass, Array[nullable MPropDef]] do
380 var tables
= new HashMap[MClass, Array[nullable MPropDef]]
381 for mclass
in mclasses
do
382 var table
= new Array[nullable MPropDef]
383 tables
[mclass
] = table
385 var mproperties
= self.mainmodule
.properties
(mclass
)
386 var mtype
= mclass
.intro
.bound_mtype
388 for mproperty
in mproperties
do
389 if not mproperty
isa MMethod then continue
390 if not method_colors
.has_key
(mproperty
) then continue
391 var color
= method_colors
[mproperty
]
392 if table
.length
<= color
then
393 for i
in [table
.length
.. color
[ do
397 table
[color
] = mproperty
.lookup_first_definition
(mainmodule
, mtype
)
400 for supercall
in super_calls
do
401 if not mtype
.collect_mclassdefs
(mainmodule
).has
(supercall
.mclassdef
) then continue
403 var color
= method_colors
[supercall
]
404 if table
.length
<= color
then
405 for i
in [table
.length
.. color
[ do
409 var mmethoddef
= supercall
.lookup_next_definition
(mainmodule
, mtype
)
410 table
[color
] = mmethoddef
417 fun build_attr_tables
(mclasses
: Set[MClass]): Map[MClass, Array[nullable MPropDef]] do
418 var tables
= new HashMap[MClass, Array[nullable MPropDef]]
419 for mclass
in mclasses
do
420 var table
= new Array[nullable MPropDef]
421 tables
[mclass
] = table
423 var mproperties
= self.mainmodule
.properties
(mclass
)
424 var mtype
= mclass
.intro
.bound_mtype
426 for mproperty
in mproperties
do
427 if not mproperty
isa MAttribute then continue
428 if not attr_colors
.has_key
(mproperty
) then continue
429 var color
= attr_colors
[mproperty
]
430 if table
.length
<= color
then
431 for i
in [table
.length
.. color
[ do
435 table
[color
] = mproperty
.lookup_first_definition
(mainmodule
, mtype
)
441 # colorize live types of the program
442 private fun do_type_coloring
: POSet[MType] do
443 # Collect types to colorize
444 var live_types
= runtime_type_analysis
.live_types
445 var live_cast_types
= runtime_type_analysis
.live_cast_types
446 var mtypes
= new HashSet[MType]
447 mtypes
.add_all
(live_types
)
448 for c
in self.box_kinds
.keys
do
449 mtypes
.add
(c
.mclass_type
)
453 var poset
= poset_from_mtypes
(mtypes
, live_cast_types
)
454 var colorer
= new POSetColorer[MType]
455 colorer
.colorize
(poset
)
456 type_ids
= colorer
.ids
457 type_colors
= colorer
.colors
458 type_tables
= build_type_tables
(poset
)
460 # VT and FT are stored with other unresolved types in the big resolution_tables
461 self.compile_resolution_tables
(mtypes
)
466 private fun poset_from_mtypes
(mtypes
, cast_types
: Set[MType]): POSet[MType] do
467 var poset
= new POSet[MType]
470 for o
in cast_types
do
471 if e
== o
then continue
473 if e
.is_subtype
(mainmodule
, null, o
) then
482 fun build_type_tables
(mtypes
: POSet[MType]): Map[MType, Array[nullable MType]] do
483 var tables
= new HashMap[MType, Array[nullable MType]]
484 for mtype
in mtypes
do
485 var table
= new Array[nullable MType]
486 for sup
in mtypes
[mtype
].greaters
do
487 var color
= type_colors
[sup
]
488 if table
.length
<= color
then
489 for i
in [table
.length
.. color
[ do
495 tables
[mtype
] = table
500 protected fun compile_resolution_tables
(mtypes
: Set[MType]) do
501 # resolution_tables is used to perform a type resolution at runtime in O(1)
503 # During the visit of the body of classes, live_unresolved_types are collected
505 # Collect all live_unresolved_types (visited in the body of classes)
507 # Determinate fo each livetype what are its possible requested anchored types
508 var mtype2unresolved
= new HashMap[MClassType, Set[MType]]
509 for mtype
in self.runtime_type_analysis
.live_types
do
510 var set
= new HashSet[MType]
511 for cd
in mtype
.collect_mclassdefs
(self.mainmodule
) do
512 if self.live_unresolved_types
.has_key
(cd
) then
513 set
.add_all
(self.live_unresolved_types
[cd
])
516 mtype2unresolved
[mtype
] = set
519 # Compute the table layout with the prefered method
520 var colorer
= new BucketsColorer[MType, MType]
521 opentype_colors
= colorer
.colorize
(mtype2unresolved
)
522 resolution_tables
= self.build_resolution_tables
(mtype2unresolved
)
524 # Compile a C constant for each collected unresolved type.
525 # Either to a color, or to -1 if the unresolved type is dead (no live receiver can require it)
526 var all_unresolved
= new HashSet[MType]
527 for t
in self.live_unresolved_types
.values
do
528 all_unresolved
.add_all
(t
)
530 var all_unresolved_types_colors
= new HashMap[MType, Int]
531 for t
in all_unresolved
do
532 if opentype_colors
.has_key
(t
) then
533 all_unresolved_types_colors
[t
] = opentype_colors
[t
]
535 all_unresolved_types_colors
[t
] = -1
538 self.compile_color_consts
(all_unresolved_types_colors
)
541 #for k, v in unresolved_types_tables.as(not null) do
542 # print "{k}: {v.join(", ")}"
547 fun build_resolution_tables
(elements
: Map[MClassType, Set[MType]]): Map[MClassType, Array[nullable MType]] do
548 var tables
= new HashMap[MClassType, Array[nullable MType]]
549 for mclasstype
, mtypes
in elements
do
550 var table
= new Array[nullable MType]
551 for mtype
in mtypes
do
552 var color
= opentype_colors
[mtype
]
553 if table
.length
<= color
then
554 for i
in [table
.length
.. color
[ do
560 tables
[mclasstype
] = table
565 # Separately compile all the method definitions of the module
566 fun compile_module_to_c
(mmodule
: MModule)
568 var old_module
= self.mainmodule
569 self.mainmodule
= mmodule
570 for cd
in mmodule
.mclassdefs
do
571 for pd
in cd
.mpropdefs
do
572 if not pd
isa MMethodDef then continue
573 var rta
= runtime_type_analysis
574 if modelbuilder
.toolcontext
.opt_skip_dead_methods
.value
and rta
!= null and not rta
.live_methoddefs
.has
(pd
) then continue
575 #print "compile {pd} @ {cd} @ {mmodule}"
576 var r
= pd
.separate_runtime_function
578 var r2
= pd
.virtual_runtime_function
579 if r2
!= r
then r2
.compile_to_c
(self)
581 # Generate trampolines
582 if modelbuilder
.toolcontext
.opt_trampoline_call
.value
then
583 r2
.compile_trampolines
(self)
587 self.mainmodule
= old_module
590 # Process all introduced methods and compile some linking information (if needed)
593 if not modelbuilder
.toolcontext
.opt_substitute_monomorph
.value
then return
595 for mmodule
in mainmodule
.in_importation
.greaters
do
596 for cd
in mmodule
.mclassdefs
do
597 for m
in cd
.intro_mproperties
do
598 if not m
isa MMethod then continue
605 # Compile some linking information (if needed)
606 fun link_mmethod
(m
: MMethod)
608 var n2
= "CALL_" + m
.const_color
610 # Replace monomorphic call by a direct call to the virtual implementation
611 var md
= is_monomorphic
(m
)
613 linker_script
.add
("{n2} = {md.virtual_runtime_function.c_name};")
618 # The single mmethodef called in case of monomorphism.
619 # Returns nul if dead or polymorphic.
620 fun is_monomorphic
(m
: MMethod): nullable MMethodDef
622 var rta
= runtime_type_analysis
624 # Without RTA, monomorphic means alone (uniq name)
625 if m
.mpropdefs
.length
== 1 then
626 return m
.mpropdefs
.first
631 # With RTA, monomorphic means only live methoddef
632 var res
: nullable MMethodDef = null
633 for md
in m
.mpropdefs
do
634 if rta
.live_methoddefs
.has
(md
) then
635 if res
!= null then return null
643 # Globaly compile the type structure of a live type
644 fun compile_type_to_c
(mtype
: MType)
646 assert not mtype
.need_anchor
647 var is_live
= mtype
isa MClassType and runtime_type_analysis
.live_types
.has
(mtype
)
648 var is_cast_live
= runtime_type_analysis
.live_cast_types
.has
(mtype
)
649 var c_name
= mtype
.c_name
650 var v
= new SeparateCompilerVisitor(self)
651 v
.add_decl
("/* runtime type {mtype} */")
653 # extern const struct type_X
654 self.provide_declaration
("type_{c_name}", "extern const struct type type_{c_name};")
656 # const struct type_X
657 v
.add_decl
("const struct type type_{c_name} = \{")
659 # type id (for cast target)
661 v
.add_decl
("{type_ids[mtype]},")
663 v
.add_decl
("-1, /*CAST DEAD*/")
667 v
.add_decl
("\"{mtype}\
", /* class_name_string */")
669 # type color (for cast target)
671 v
.add_decl
("{type_colors[mtype]},")
673 v
.add_decl
("-1, /*CAST DEAD*/")
677 if mtype
isa MNullableType then
683 # resolution table (for receiver)
685 var mclass_type
= mtype
.as_notnullable
686 assert mclass_type
isa MClassType
687 if resolution_tables
[mclass_type
].is_empty
then
688 v
.add_decl
("NULL, /*NO RESOLUTIONS*/")
690 compile_type_resolution_table
(mtype
)
691 v
.require_declaration
("resolution_table_{c_name}")
692 v
.add_decl
("&resolution_table_{c_name},")
695 v
.add_decl
("NULL, /*DEAD*/")
698 # cast table (for receiver)
700 v
.add_decl
("{self.type_tables[mtype].length},")
702 for stype
in self.type_tables
[mtype
] do
703 if stype
== null then
704 v
.add_decl
("-1, /* empty */")
706 v
.add_decl
("{type_ids[stype]}, /* {stype} */")
711 v
.add_decl
("0, \{\}, /*DEAD TYPE*/")
716 fun compile_type_resolution_table
(mtype
: MType) do
718 var mclass_type
= mtype
.as_notnullable
.as(MClassType)
720 # extern const struct resolution_table_X resolution_table_X
721 self.provide_declaration
("resolution_table_{mtype.c_name}", "extern const struct types resolution_table_{mtype.c_name};")
723 # const struct fts_table_X fts_table_X
725 v
.add_decl
("const struct types resolution_table_{mtype.c_name} = \{")
726 v
.add_decl
("0, /* dummy */")
728 for t
in self.resolution_tables
[mclass_type
] do
730 v
.add_decl
("NULL, /* empty */")
732 # The table stores the result of the type resolution
733 # Therefore, for a receiver `mclass_type`, and a unresolved type `t`
734 # the value stored is tv.
735 var tv
= t
.resolve_for
(mclass_type
, mclass_type
, self.mainmodule
, true)
736 # FIXME: What typeids means here? How can a tv not be live?
737 if type_ids
.has_key
(tv
) then
738 v
.require_declaration
("type_{tv.c_name}")
739 v
.add_decl
("&type_{tv.c_name}, /* {t}: {tv} */")
741 v
.add_decl
("NULL, /* empty ({t}: {tv} not a live type) */")
749 # Globally compile the table of the class mclass
750 # In a link-time optimisation compiler, tables are globally computed
751 # In a true separate compiler (a with dynamic loading) you cannot do this unfortnally
752 fun compile_class_to_c
(mclass
: MClass)
754 var mtype
= mclass
.intro
.bound_mtype
755 var c_name
= mclass
.c_name
757 var vft
= self.method_tables
[mclass
]
758 var attrs
= self.attr_tables
[mclass
]
761 var rta
= runtime_type_analysis
762 var is_dead
= rta
!= null and not rta
.live_classes
.has
(mclass
) and mtype
.ctype
== "val*" and mclass
.name
!= "NativeArray" and mclass
.name
!= "Pointer"
764 v
.add_decl
("/* runtime class {c_name} */")
768 self.provide_declaration
("class_{c_name}", "extern const struct class class_{c_name};")
769 v
.add_decl
("const struct class class_{c_name} = \{")
770 v
.add_decl
("{self.box_kind_of(mclass)}, /* box_kind */")
772 for i
in [0 .. vft
.length
[ do
773 var mpropdef
= vft
[i
]
774 if mpropdef
== null then
775 v
.add_decl
("NULL, /* empty */")
777 assert mpropdef
isa MMethodDef
778 if rta
!= null and not rta
.live_methoddefs
.has
(mpropdef
) then
779 v
.add_decl
("NULL, /* DEAD {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
782 var rf
= mpropdef
.virtual_runtime_function
783 v
.require_declaration
(rf
.c_name
)
784 v
.add_decl
("(nitmethod_t){rf.c_name}, /* pointer to {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
791 if mtype
.ctype
!= "val*" or mtype
.mclass
.name
== "Pointer" then
792 # Is a primitive type or the Pointer class, not any other extern class
794 #Build instance struct
795 self.header
.add_decl
("struct instance_{c_name} \{")
796 self.header
.add_decl
("const struct type *type;")
797 self.header
.add_decl
("const struct class *class;")
798 self.header
.add_decl
("{mtype.ctype_extern} value;")
799 self.header
.add_decl
("\};")
801 if not rta
.live_types
.has
(mtype
) and mtype
.mclass
.name
!= "Pointer" then return
804 self.provide_declaration
("BOX_{c_name}", "val* BOX_{c_name}({mtype.ctype_extern});")
805 v
.add_decl
("/* allocate {mtype} */")
806 v
.add_decl
("val* BOX_{mtype.c_name}({mtype.ctype_extern} value) \{")
807 v
.add
("struct instance_{c_name}*res = nit_alloc(sizeof(struct instance_{c_name}));")
808 v
.compiler
.undead_types
.add
(mtype
)
809 v
.require_declaration
("type_{c_name}")
810 v
.add
("res->type = &type_{c_name};")
811 v
.require_declaration
("class_{c_name}")
812 v
.add
("res->class = &class_{c_name};")
813 v
.add
("res->value = value;")
814 v
.add
("return (val*)res;")
817 if mtype
.mclass
.name
!= "Pointer" then return
820 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
821 v
.add_decl
("/* allocate {mtype} */")
822 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
824 v
.add_abort
("{mclass} is DEAD")
826 var res
= v
.new_named_var
(mtype
, "self")
828 v
.add
("{res} = nit_alloc(sizeof(struct instance_{mtype.c_name}));")
829 v
.add
("{res}->type = type;")
830 hardening_live_type
(v
, "type")
831 v
.require_declaration
("class_{c_name}")
832 v
.add
("{res}->class = &class_{c_name};")
833 v
.add
("((struct instance_{mtype.c_name}*){res})->value = NULL;")
834 v
.add
("return {res};")
838 else if mclass
.name
== "NativeArray" then
839 #Build instance struct
840 self.header
.add_decl
("struct instance_{c_name} \{")
841 self.header
.add_decl
("const struct type *type;")
842 self.header
.add_decl
("const struct class *class;")
843 # NativeArrays are just a instance header followed by a length and an array of values
844 self.header
.add_decl
("int length;")
845 self.header
.add_decl
("val* values[0];")
846 self.header
.add_decl
("\};")
849 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(int length, const struct type* type);")
850 v
.add_decl
("/* allocate {mtype} */")
851 v
.add_decl
("{mtype.ctype} NEW_{c_name}(int length, const struct type* type) \{")
852 var res
= v
.get_name
("self")
853 v
.add_decl
("struct instance_{c_name} *{res};")
854 var mtype_elt
= mtype
.arguments
.first
855 v
.add
("{res} = nit_alloc(sizeof(struct instance_{c_name}) + length*sizeof({mtype_elt.ctype}));")
856 v
.add
("{res}->type = type;")
857 hardening_live_type
(v
, "type")
858 v
.require_declaration
("class_{c_name}")
859 v
.add
("{res}->class = &class_{c_name};")
860 v
.add
("{res}->length = length;")
861 v
.add
("return (val*){res};")
864 else if mtype
.mclass
.kind
== extern_kind
and mtype
.mclass
.name
!= "NativeString" then
865 # Is an extern class (other than Pointer and NativeString)
866 # Pointer is caught in a previous `if`, and NativeString is internal
868 var pointer_type
= mainmodule
.pointer_type
870 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
871 v
.add_decl
("/* allocate {mtype} */")
872 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
874 v
.add_abort
("{mclass} is DEAD")
876 var res
= v
.new_named_var
(mtype
, "self")
878 v
.add
("{res} = nit_alloc(sizeof(struct instance_{pointer_type.c_name}));")
879 v
.add
("{res}->type = type;")
880 hardening_live_type
(v
, "type")
881 v
.require_declaration
("class_{c_name}")
882 v
.add
("{res}->class = &class_{c_name};")
883 v
.add
("((struct instance_{pointer_type.c_name}*){res})->value = NULL;")
884 v
.add
("return {res};")
891 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
892 v
.add_decl
("/* allocate {mtype} */")
893 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
895 v
.add_abort
("{mclass} is DEAD")
897 var res
= v
.new_named_var
(mtype
, "self")
899 v
.add
("{res} = nit_alloc(sizeof(struct instance) + {attrs.length}*sizeof(nitattribute_t));")
900 v
.add
("{res}->type = type;")
901 hardening_live_type
(v
, "type")
902 v
.require_declaration
("class_{c_name}")
903 v
.add
("{res}->class = &class_{c_name};")
904 self.generate_init_attr
(v
, res
, mtype
)
906 v
.add
("return {res};")
911 # Add a dynamic test to ensure that the type referenced by `t` is a live type
912 fun hardening_live_type
(v
: VISITOR, t
: String)
914 if not v
.compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
915 v
.add
("if({t} == NULL) \{")
916 v
.add_abort
("type null")
918 v
.add
("if({t}->table_size == 0) \{")
919 v
.add
("PRINT_ERROR(\"Insantiation of a dead
type: %s\\n\
", {t}->name);")
920 v
.add_abort
("type dead")
924 redef fun new_visitor
do return new SeparateCompilerVisitor(self)
928 private var type_tables
: Map[MType, Array[nullable MType]] = new HashMap[MType, Array[nullable MType]]
929 private var resolution_tables
: Map[MClassType, Array[nullable MType]] = new HashMap[MClassType, Array[nullable MType]]
930 protected var method_tables
: Map[MClass, Array[nullable MPropDef]] = new HashMap[MClass, Array[nullable MPropDef]]
931 protected var attr_tables
: Map[MClass, Array[nullable MPropDef]] = new HashMap[MClass, Array[nullable MPropDef]]
933 redef fun display_stats
936 if self.modelbuilder
.toolcontext
.opt_tables_metrics
.value
then
939 if self.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
942 var tc
= self.modelbuilder
.toolcontext
943 tc
.info
("# implementation of method invocation",2)
944 var nb_invok_total
= modelbuilder
.nb_invok_by_tables
+ modelbuilder
.nb_invok_by_direct
+ modelbuilder
.nb_invok_by_inline
945 tc
.info
("total number of invocations: {nb_invok_total}",2)
946 tc
.info
("invocations by VFT send: {modelbuilder.nb_invok_by_tables} ({div(modelbuilder.nb_invok_by_tables,nb_invok_total)}%)",2)
947 tc
.info
("invocations by direct call: {modelbuilder.nb_invok_by_direct} ({div(modelbuilder.nb_invok_by_direct,nb_invok_total)}%)",2)
948 tc
.info
("invocations by inlining: {modelbuilder.nb_invok_by_inline} ({div(modelbuilder.nb_invok_by_inline,nb_invok_total)}%)",2)
953 print
"# size of subtyping tables"
954 print
"\ttotal \tholes"
957 for t
, table
in type_tables
do
958 total
+= table
.length
959 for e
in table
do if e
== null then holes
+= 1
961 print
"\t{total}\t{holes}"
963 print
"# size of resolution tables"
964 print
"\ttotal \tholes"
967 for t
, table
in resolution_tables
do
968 total
+= table
.length
969 for e
in table
do if e
== null then holes
+= 1
971 print
"\t{total}\t{holes}"
973 print
"# size of methods tables"
974 print
"\ttotal \tholes"
977 for t
, table
in method_tables
do
978 total
+= table
.length
979 for e
in table
do if e
== null then holes
+= 1
981 print
"\t{total}\t{holes}"
983 print
"# size of attributes tables"
984 print
"\ttotal \tholes"
987 for t
, table
in attr_tables
do
988 total
+= table
.length
989 for e
in table
do if e
== null then holes
+= 1
991 print
"\t{total}\t{holes}"
994 protected var isset_checks_count
= 0
995 protected var attr_read_count
= 0
997 fun display_isset_checks
do
998 print
"# total number of compiled attribute reads"
999 print
"\t{attr_read_count}"
1000 print
"# total number of compiled isset-checks"
1001 print
"\t{isset_checks_count}"
1004 redef fun compile_nitni_structs
1006 self.header
.add_decl
"""
1007 struct nitni_instance \{
1008 struct nitni_instance *next,
1009 *prev; /* adjacent global references in global list */
1010 int count; /* number of time this global reference has been marked */
1011 struct instance *value;
1017 redef fun finalize_ffi_for_module
(mmodule
)
1019 var old_module
= self.mainmodule
1020 self.mainmodule
= mmodule
1022 self.mainmodule
= old_module
1026 # A visitor on the AST of property definition that generate the C code of a separate compilation process.
1027 class SeparateCompilerVisitor
1028 super AbstractCompilerVisitor
1030 redef type COMPILER: SeparateCompiler
1032 redef fun adapt_signature
(m
, args
)
1034 var msignature
= m
.msignature
.resolve_for
(m
.mclassdef
.bound_mtype
, m
.mclassdef
.bound_mtype
, m
.mclassdef
.mmodule
, true)
1035 var recv
= args
.first
1036 if recv
.mtype
.ctype
!= m
.mclassdef
.mclass
.mclass_type
.ctype
then
1037 args
.first
= self.autobox
(args
.first
, m
.mclassdef
.mclass
.mclass_type
)
1039 for i
in [0..msignature
.arity
[ do
1040 var t
= msignature
.mparameters
[i
].mtype
1041 if i
== msignature
.vararg_rank
then
1044 args
[i
+1] = self.autobox
(args
[i
+1], t
)
1048 redef fun unbox_signature_extern
(m
, args
)
1050 var msignature
= m
.msignature
.resolve_for
(m
.mclassdef
.bound_mtype
, m
.mclassdef
.bound_mtype
, m
.mclassdef
.mmodule
, true)
1051 if not m
.mproperty
.is_init
and m
.is_extern
then
1052 args
.first
= self.unbox_extern
(args
.first
, m
.mclassdef
.mclass
.mclass_type
)
1054 for i
in [0..msignature
.arity
[ do
1055 var t
= msignature
.mparameters
[i
].mtype
1056 if i
== msignature
.vararg_rank
then
1059 if m
.is_extern
then args
[i
+1] = self.unbox_extern
(args
[i
+1], t
)
1063 redef fun autobox
(value
, mtype
)
1065 if value
.mtype
== mtype
then
1067 else if value
.mtype
.ctype
== "val*" and mtype
.ctype
== "val*" then
1069 else if value
.mtype
.ctype
== "val*" then
1070 return self.new_expr
("((struct instance_{mtype.c_name}*){value})->value; /* autounbox from {value.mtype} to {mtype} */", mtype
)
1071 else if mtype
.ctype
== "val*" then
1072 var valtype
= value
.mtype
.as(MClassType)
1073 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and mtype
.mclass
.name
!= "NativeString" then
1074 valtype
= compiler
.mainmodule
.pointer_type
1076 var res
= self.new_var
(mtype
)
1077 if compiler
.runtime_type_analysis
!= null and not compiler
.runtime_type_analysis
.live_types
.has
(valtype
) then
1078 self.add
("/*no autobox from {value.mtype} to {mtype}: {value.mtype} is not live! */")
1079 self.add
("PRINT_ERROR(\"Dead code executed
!\\n\
"); show_backtrace(1);")
1082 self.require_declaration
("BOX_{valtype.c_name}")
1083 self.add
("{res} = BOX_{valtype.c_name}({value}); /* autobox from {value.mtype} to {mtype} */")
1085 else if (value
.mtype
.ctype
== "void*" and mtype
.ctype
== "void*") or
1086 (value
.mtype
.ctype
== "char*" and mtype
.ctype
== "void*") or
1087 (value
.mtype
.ctype
== "void*" and mtype
.ctype
== "char*") then
1090 # Bad things will appen!
1091 var res
= self.new_var
(mtype
)
1092 self.add
("/* {res} left unintialized (cannot convert {value.mtype} to {mtype}) */")
1093 self.add
("PRINT_ERROR(\"Cast error
: Cannot cast
%s to
%s
.\\n\
", \"{value.mtype}\
", \"{mtype}\
"); show_backtrace(1);")
1098 redef fun unbox_extern
(value
, mtype
)
1100 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and
1101 mtype
.mclass
.name
!= "NativeString" then
1102 var pointer_type
= compiler
.mainmodule
.pointer_type
1103 var res
= self.new_var_extern
(mtype
)
1104 self.add
"{res} = ((struct instance_{pointer_type.c_name}*){value})->value; /* unboxing {value.mtype} */"
1111 redef fun box_extern
(value
, mtype
)
1113 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and
1114 mtype
.mclass
.name
!= "NativeString" then
1115 var valtype
= compiler
.mainmodule
.pointer_type
1116 var res
= self.new_var
(mtype
)
1117 if compiler
.runtime_type_analysis
!= null and not compiler
.runtime_type_analysis
.live_types
.has
(value
.mtype
.as(MClassType)) then
1118 self.add
("/*no boxing of {value.mtype}: {value.mtype} is not live! */")
1119 self.add
("PRINT_ERROR(\"Dead code executed
!\\n\
"); show_backtrace(1);")
1122 self.require_declaration
("BOX_{valtype.c_name}")
1123 self.add
("{res} = BOX_{valtype.c_name}({value}); /* boxing {value.mtype} */")
1124 self.require_declaration
("type_{mtype.c_name}")
1125 self.add
("{res}->type = &type_{mtype.c_name};")
1126 self.require_declaration
("class_{mtype.c_name}")
1127 self.add
("{res}->class = &class_{mtype.c_name};")
1134 # Return a C expression returning the runtime type structure of the value
1135 # The point of the method is to works also with primitives types.
1136 fun type_info
(value
: RuntimeVariable): String
1138 if value
.mtype
.ctype
== "val*" then
1139 return "{value}->type"
1141 compiler
.undead_types
.add
(value
.mtype
)
1142 self.require_declaration
("type_{value.mtype.c_name}")
1143 return "(&type_{value.mtype.c_name})"
1147 redef fun compile_callsite
(callsite
, args
)
1149 var rta
= compiler
.runtime_type_analysis
1150 var mmethod
= callsite
.mproperty
1151 # TODO: Inlining of new-style constructors with initializers
1152 if compiler
.modelbuilder
.toolcontext
.opt_direct_call_monomorph
.value
and rta
!= null and callsite
.mpropdef
.initializers
.is_empty
then
1153 var tgs
= rta
.live_targets
(callsite
)
1154 if tgs
.length
== 1 then
1156 var res0
= before_send
(mmethod
, args
)
1157 var res
= call
(tgs
.first
, tgs
.first
.mclassdef
.bound_mtype
, args
)
1158 if res0
!= null then
1160 self.assign
(res0
, res
)
1163 add
("\}") # close the before_send
1169 redef fun send
(mmethod
, arguments
)
1171 if arguments
.first
.mcasttype
.ctype
!= "val*" then
1172 # In order to shortcut the primitive, we need to find the most specific method
1173 # Howverr, because of performance (no flattening), we always work on the realmainmodule
1174 var m
= self.compiler
.mainmodule
1175 self.compiler
.mainmodule
= self.compiler
.realmainmodule
1176 var res
= self.monomorphic_send
(mmethod
, arguments
.first
.mcasttype
, arguments
)
1177 self.compiler
.mainmodule
= m
1181 return table_send
(mmethod
, arguments
, mmethod
)
1184 # Handle common special cases before doing the effective method invocation
1185 # This methods handle the `==` and `!=` methods and the case of the null receiver.
1186 # Note: a { is open in the generated C, that enclose and protect the effective method invocation.
1187 # Client must not forget to close the } after them.
1189 # The value returned is the result of the common special cases.
1190 # If not null, client must compile it with the result of their own effective method invocation.
1192 # If `before_send` can shortcut the whole message sending, a dummy `if(0){`
1193 # is generated to cancel the effective method invocation that will follow
1194 # TODO: find a better approach
1195 private fun before_send
(mmethod
: MMethod, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable
1197 var res
: nullable RuntimeVariable = null
1198 var recv
= arguments
.first
1199 var consider_null
= not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_null
.value
or mmethod
.name
== "==" or mmethod
.name
== "!="
1200 var maybenull
= (recv
.mcasttype
isa MNullableType or recv
.mcasttype
isa MNullType) and consider_null
1202 self.add
("if ({recv} == NULL) \{")
1203 if mmethod
.name
== "==" or mmethod
.name
== "is_same_instance" then
1204 res
= self.new_var
(bool_type
)
1205 var arg
= arguments
[1]
1206 if arg
.mcasttype
isa MNullableType then
1207 self.add
("{res} = ({arg} == NULL);")
1208 else if arg
.mcasttype
isa MNullType then
1209 self.add
("{res} = 1; /* is null */")
1211 self.add
("{res} = 0; /* {arg.inspect} cannot be null */")
1213 else if mmethod
.name
== "!=" then
1214 res
= self.new_var
(bool_type
)
1215 var arg
= arguments
[1]
1216 if arg
.mcasttype
isa MNullableType then
1217 self.add
("{res} = ({arg} != NULL);")
1218 else if arg
.mcasttype
isa MNullType then
1219 self.add
("{res} = 0; /* is null */")
1221 self.add
("{res} = 1; /* {arg.inspect} cannot be null */")
1224 self.add_abort
("Receiver is null")
1226 self.add
("\} else \{")
1230 if not self.compiler
.modelbuilder
.toolcontext
.opt_no_shortcut_equate
.value
and (mmethod
.name
== "==" or mmethod
.name
== "!=" or mmethod
.name
== "is_same_instance") then
1231 # Recv is not null, thus if arg is, it is easy to conclude (and respect the invariants)
1232 var arg
= arguments
[1]
1233 if arg
.mcasttype
isa MNullType then
1234 if res
== null then res
= self.new_var
(bool_type
)
1235 if mmethod
.name
== "!=" then
1236 self.add
("{res} = 1; /* arg is null and recv is not */")
1237 else # `==` and `is_same_instance`
1238 self.add
("{res} = 0; /* arg is null but recv is not */")
1240 self.add
("\}") # closes the null case
1241 self.add
("if (0) \{") # what follow is useless, CC will drop it
1247 private fun table_send
(mmethod
: MMethod, arguments
: Array[RuntimeVariable], mentity
: MEntity): nullable RuntimeVariable
1249 compiler
.modelbuilder
.nb_invok_by_tables
+= 1
1250 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_tables++;")
1252 assert arguments
.length
== mmethod
.intro
.msignature
.arity
+ 1 else debug
("Invalid arity for {mmethod}. {arguments.length} arguments given.")
1253 var recv
= arguments
.first
1255 var res0
= before_send
(mmethod
, arguments
)
1257 var runtime_function
= mmethod
.intro
.virtual_runtime_function
1258 var msignature
= runtime_function
.called_signature
1260 var res
: nullable RuntimeVariable
1261 var ret
= msignature
.return_mtype
1265 res
= self.new_var
(ret
)
1268 var ss
= new FlatBuffer
1271 for i
in [0..msignature
.arity
[ do
1272 var a
= arguments
[i
+1]
1273 var t
= msignature
.mparameters
[i
].mtype
1274 if i
== msignature
.vararg_rank
then
1275 t
= arguments
[i
+1].mcasttype
1277 a
= self.autobox
(a
, t
)
1281 var const_color
= mentity
.const_color
1283 if not compiler
.modelbuilder
.toolcontext
.opt_trampoline_call
.value
then
1284 self.require_declaration
(const_color
)
1285 call
= "(({runtime_function.c_funptrtype})({arguments.first}->class->vft[{const_color}]))({ss}) /* {mmethod} on {arguments.first.inspect}*/"
1287 var callsym
= "CALL_" + const_color
1288 self.require_declaration
(callsym
)
1289 call
= "{callsym}({ss}) /* {mmethod} on {arguments.first.inspect}*/"
1293 self.add
("{res} = {call};")
1298 if res0
!= null then
1304 self.add
("\}") # closes the null case
1309 redef fun call
(mmethoddef
, recvtype
, arguments
)
1311 assert arguments
.length
== mmethoddef
.msignature
.arity
+ 1 else debug
("Invalid arity for {mmethoddef}. {arguments.length} arguments given.")
1313 var res
: nullable RuntimeVariable
1314 var ret
= mmethoddef
.msignature
.return_mtype
1318 ret
= ret
.resolve_for
(mmethoddef
.mclassdef
.bound_mtype
, mmethoddef
.mclassdef
.bound_mtype
, mmethoddef
.mclassdef
.mmodule
, true)
1319 res
= self.new_var
(ret
)
1322 if (mmethoddef
.is_intern
and not compiler
.modelbuilder
.toolcontext
.opt_no_inline_intern
.value
) or
1323 (compiler
.modelbuilder
.toolcontext
.opt_inline_some_methods
.value
and mmethoddef
.can_inline
(self)) then
1324 compiler
.modelbuilder
.nb_invok_by_inline
+= 1
1325 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_inline++;")
1326 var frame
= new StaticFrame(self, mmethoddef
, recvtype
, arguments
)
1327 frame
.returnlabel
= self.get_name
("RET_LABEL")
1328 frame
.returnvar
= res
1329 var old_frame
= self.frame
1331 self.add
("\{ /* Inline {mmethoddef} ({arguments.join(",")}) on {arguments.first.inspect} */")
1332 mmethoddef
.compile_inside_to_c
(self, arguments
)
1333 self.add
("{frame.returnlabel.as(not null)}:(void)0;")
1335 self.frame
= old_frame
1338 compiler
.modelbuilder
.nb_invok_by_direct
+= 1
1339 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_direct++;")
1342 self.adapt_signature
(mmethoddef
, arguments
)
1344 self.require_declaration
(mmethoddef
.c_name
)
1346 self.add
("{mmethoddef.c_name}({arguments.join(", ")}); /* Direct call {mmethoddef} on {arguments.first.inspect}*/")
1349 self.add
("{res} = {mmethoddef.c_name}({arguments.join(", ")});")
1355 redef fun supercall
(m
: MMethodDef, recvtype
: MClassType, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable
1357 if arguments
.first
.mcasttype
.ctype
!= "val*" then
1358 # In order to shortcut the primitive, we need to find the most specific method
1359 # However, because of performance (no flattening), we always work on the realmainmodule
1360 var main
= self.compiler
.mainmodule
1361 self.compiler
.mainmodule
= self.compiler
.realmainmodule
1362 var res
= self.monomorphic_super_send
(m
, recvtype
, arguments
)
1363 self.compiler
.mainmodule
= main
1366 return table_send
(m
.mproperty
, arguments
, m
)
1369 redef fun vararg_instance
(mpropdef
, recv
, varargs
, elttype
)
1371 # A vararg must be stored into an new array
1372 # The trick is that the dymaic type of the array may depends on the receiver
1373 # of the method (ie recv) if the static type is unresolved
1374 # This is more complex than usual because the unresolved type must not be resolved
1375 # with the current receiver (ie self).
1376 # Therefore to isolate the resolution from self, a local StaticFrame is created.
1377 # One can see this implementation as an inlined method of the receiver whose only
1378 # job is to allocate the array
1379 var old_frame
= self.frame
1380 var frame
= new StaticFrame(self, mpropdef
, mpropdef
.mclassdef
.bound_mtype
, [recv
])
1382 #print "required Array[{elttype}] for recv {recv.inspect}. bound=Array[{self.resolve_for(elttype, recv)}]. selfvar={frame.arguments.first.inspect}"
1383 var res
= self.array_instance
(varargs
, elttype
)
1384 self.frame
= old_frame
1388 redef fun isset_attribute
(a
, recv
)
1390 self.check_recv_notnull
(recv
)
1391 var res
= self.new_var
(bool_type
)
1393 # What is the declared type of the attribute?
1394 var mtype
= a
.intro
.static_mtype
.as(not null)
1395 var intromclassdef
= a
.intro
.mclassdef
1396 mtype
= mtype
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1398 if mtype
isa MNullableType then
1399 self.add
("{res} = 1; /* easy isset: {a} on {recv.inspect} */")
1403 self.require_declaration
(a
.const_color
)
1404 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1405 self.add
("{res} = {recv}->attrs[{a.const_color}] != NULL; /* {a} on {recv.inspect}*/")
1408 if mtype
.ctype
== "val*" then
1409 self.add
("{res} = {recv}->attrs[{a.const_color}].val != NULL; /* {a} on {recv.inspect} */")
1411 self.add
("{res} = 1; /* NOT YET IMPLEMENTED: isset of primitives: {a} on {recv.inspect} */")
1417 redef fun read_attribute
(a
, recv
)
1419 self.check_recv_notnull
(recv
)
1421 # What is the declared type of the attribute?
1422 var ret
= a
.intro
.static_mtype
.as(not null)
1423 var intromclassdef
= a
.intro
.mclassdef
1424 ret
= ret
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1426 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1427 self.compiler
.attr_read_count
+= 1
1428 self.add
("count_attr_reads++;")
1431 self.require_declaration
(a
.const_color
)
1432 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1433 # Get the attribute or a box (ie. always a val*)
1434 var cret
= self.object_type
.as_nullable
1435 var res
= self.new_var
(cret
)
1438 self.add
("{res} = {recv}->attrs[{a.const_color}]; /* {a} on {recv.inspect} */")
1440 # Check for Uninitialized attribute
1441 if not ret
isa MNullableType and not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_attr_isset
.value
then
1442 self.add
("if (unlikely({res} == NULL)) \{")
1443 self.add_abort
("Uninitialized attribute {a.name}")
1446 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1447 self.compiler
.isset_checks_count
+= 1
1448 self.add
("count_isset_checks++;")
1452 # Return the attribute or its unboxed version
1453 # Note: it is mandatory since we reuse the box on write, we do not whant that the box escapes
1454 return self.autobox
(res
, ret
)
1456 var res
= self.new_var
(ret
)
1457 self.add
("{res} = {recv}->attrs[{a.const_color}].{ret.ctypename}; /* {a} on {recv.inspect} */")
1459 # Check for Uninitialized attribute
1460 if ret
.ctype
== "val*" and not ret
isa MNullableType and not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_attr_isset
.value
then
1461 self.add
("if (unlikely({res} == NULL)) \{")
1462 self.add_abort
("Uninitialized attribute {a.name}")
1464 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1465 self.compiler
.isset_checks_count
+= 1
1466 self.add
("count_isset_checks++;")
1474 redef fun write_attribute
(a
, recv
, value
)
1476 self.check_recv_notnull
(recv
)
1478 # What is the declared type of the attribute?
1479 var mtype
= a
.intro
.static_mtype
.as(not null)
1480 var intromclassdef
= a
.intro
.mclassdef
1481 mtype
= mtype
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1483 # Adapt the value to the declared type
1484 value
= self.autobox
(value
, mtype
)
1486 self.require_declaration
(a
.const_color
)
1487 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1488 var attr
= "{recv}->attrs[{a.const_color}]"
1489 if mtype
.ctype
!= "val*" then
1490 assert mtype
isa MClassType
1491 # The attribute is primitive, thus we store it in a box
1492 # The trick is to create the box the first time then resuse the box
1493 self.add
("if ({attr} != NULL) \{")
1494 self.add
("((struct instance_{mtype.c_name}*){attr})->value = {value}; /* {a} on {recv.inspect} */")
1495 self.add
("\} else \{")
1496 value
= self.autobox
(value
, self.object_type
.as_nullable
)
1497 self.add
("{attr} = {value}; /* {a} on {recv.inspect} */")
1500 # The attribute is not primitive, thus store it direclty
1501 self.add
("{attr} = {value}; /* {a} on {recv.inspect} */")
1504 self.add
("{recv}->attrs[{a.const_color}].{mtype.ctypename} = {value}; /* {a} on {recv.inspect} */")
1508 # Check that mtype is a live open type
1509 fun hardening_live_open_type
(mtype
: MType)
1511 if not compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
1512 self.require_declaration
(mtype
.const_color
)
1513 var col
= mtype
.const_color
1514 self.add
("if({col} == -1) \{")
1515 self.add
("PRINT_ERROR(\"Resolution of a dead open
type: %s\\n\
", \"{mtype.to_s.escape_to_c}\
");")
1516 self.add_abort
("open type dead")
1520 # Check that mtype it a pointer to a live cast type
1521 fun hardening_cast_type
(t
: String)
1523 if not compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
1524 add
("if({t} == NULL) \{")
1525 add_abort
("cast type null")
1527 add
("if({t}->id == -1 || {t}->color == -1) \{")
1528 add
("PRINT_ERROR(\"Try to cast on a dead cast
type: %s\\n\
", {t}->name);")
1529 add_abort
("cast type dead")
1533 redef fun init_instance
(mtype
)
1535 self.require_declaration
("NEW_{mtype.mclass.c_name}")
1536 var compiler
= self.compiler
1537 if mtype
isa MGenericType and mtype
.need_anchor
then
1538 hardening_live_open_type
(mtype
)
1539 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1540 var recv
= self.frame
.arguments
.first
1541 var recv_type_info
= self.type_info
(recv
)
1542 self.require_declaration
(mtype
.const_color
)
1543 return self.new_expr
("NEW_{mtype.mclass.c_name}({recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype
)
1545 compiler
.undead_types
.add
(mtype
)
1546 self.require_declaration
("type_{mtype.c_name}")
1547 return self.new_expr
("NEW_{mtype.mclass.c_name}(&type_{mtype.c_name})", mtype
)
1550 redef fun type_test
(value
, mtype
, tag
)
1552 self.add
("/* {value.inspect} isa {mtype} */")
1553 var compiler
= self.compiler
1555 var recv
= self.frame
.arguments
.first
1556 var recv_type_info
= self.type_info
(recv
)
1558 var res
= self.new_var
(bool_type
)
1560 var cltype
= self.get_name
("cltype")
1561 self.add_decl
("int {cltype};")
1562 var idtype
= self.get_name
("idtype")
1563 self.add_decl
("int {idtype};")
1565 var maybe_null
= self.maybe_null
(value
)
1566 var accept_null
= "0"
1568 if ntype
isa MNullableType then
1573 if value
.mcasttype
.is_subtype
(self.frame
.mpropdef
.mclassdef
.mmodule
, self.frame
.mpropdef
.mclassdef
.bound_mtype
, mtype
) then
1574 self.add
("{res} = 1; /* easy {value.inspect} isa {mtype}*/")
1575 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1576 self.compiler
.count_type_test_skipped
[tag
] += 1
1577 self.add
("count_type_test_skipped_{tag}++;")
1582 if ntype
.need_anchor
then
1583 var type_struct
= self.get_name
("type_struct")
1584 self.add_decl
("const struct type* {type_struct};")
1586 # Either with resolution_table with a direct resolution
1587 hardening_live_open_type
(mtype
)
1588 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1589 self.require_declaration
(mtype
.const_color
)
1590 self.add
("{type_struct} = {recv_type_info}->resolution_table->types[{mtype.const_color}];")
1591 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1592 self.compiler
.count_type_test_unresolved
[tag
] += 1
1593 self.add
("count_type_test_unresolved_{tag}++;")
1595 hardening_cast_type
(type_struct
)
1596 self.add
("{cltype} = {type_struct}->color;")
1597 self.add
("{idtype} = {type_struct}->id;")
1598 if maybe_null
and accept_null
== "0" then
1599 var is_nullable
= self.get_name
("is_nullable")
1600 self.add_decl
("short int {is_nullable};")
1601 self.add
("{is_nullable} = {type_struct}->is_nullable;")
1602 accept_null
= is_nullable
.to_s
1604 else if ntype
isa MClassType then
1605 compiler
.undead_types
.add
(mtype
)
1606 self.require_declaration
("type_{mtype.c_name}")
1607 hardening_cast_type
("(&type_{mtype.c_name})")
1608 self.add
("{cltype} = type_{mtype.c_name}.color;")
1609 self.add
("{idtype} = type_{mtype.c_name}.id;")
1610 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1611 self.compiler
.count_type_test_resolved
[tag
] += 1
1612 self.add
("count_type_test_resolved_{tag}++;")
1615 self.add
("PRINT_ERROR(\"NOT YET IMPLEMENTED: type_test
(%s
, {mtype}).\\n\
", \"{value.inspect}\
"); show_backtrace(1);")
1618 # check color is in table
1620 self.add
("if({value} == NULL) \{")
1621 self.add
("{res} = {accept_null};")
1622 self.add
("\} else \{")
1624 var value_type_info
= self.type_info
(value
)
1625 self.add
("if({cltype} >= {value_type_info}->table_size) \{")
1626 self.add
("{res} = 0;")
1627 self.add
("\} else \{")
1628 self.add
("{res} = {value_type_info}->type_table[{cltype}] == {idtype};")
1637 redef fun is_same_type_test
(value1
, value2
)
1639 var res
= self.new_var
(bool_type
)
1640 # Swap values to be symetric
1641 if value2
.mtype
.ctype
!= "val*" and value1
.mtype
.ctype
== "val*" then
1646 if value1
.mtype
.ctype
!= "val*" then
1647 if value2
.mtype
== value1
.mtype
then
1648 self.add
("{res} = 1; /* is_same_type_test: compatible types {value1.mtype} vs. {value2.mtype} */")
1649 else if value2
.mtype
.ctype
!= "val*" then
1650 self.add
("{res} = 0; /* is_same_type_test: incompatible types {value1.mtype} vs. {value2.mtype}*/")
1652 var mtype1
= value1
.mtype
.as(MClassType)
1653 self.require_declaration
("class_{mtype1.c_name}")
1654 self.add
("{res} = ({value2} != NULL) && ({value2}->class == &class_{mtype1.c_name}); /* is_same_type_test */")
1657 self.add
("{res} = ({value1} == {value2}) || ({value1} != NULL && {value2} != NULL && {value1}->class == {value2}->class); /* is_same_type_test */")
1662 redef fun class_name_string
(value
)
1664 var res
= self.get_name
("var_class_name")
1665 self.add_decl
("const char* {res};")
1666 if value
.mtype
.ctype
== "val*" then
1667 self.add
"{res} = {value} == NULL ? \"null\
" : {value}->type->name;"
1668 else if value
.mtype
isa MClassType and value
.mtype
.as(MClassType).mclass
.kind
== extern_kind
and
1669 value
.mtype
.as(MClassType).name
!= "NativeString" then
1670 self.add
"{res} = \"{value.mtype.as(MClassType).mclass}\
";"
1672 self.require_declaration
("type_{value.mtype.c_name}")
1673 self.add
"{res} = type_{value.mtype.c_name}.name;"
1678 redef fun equal_test
(value1
, value2
)
1680 var res
= self.new_var
(bool_type
)
1681 if value2
.mtype
.ctype
!= "val*" and value1
.mtype
.ctype
== "val*" then
1686 if value1
.mtype
.ctype
!= "val*" then
1687 if value2
.mtype
== value1
.mtype
then
1688 self.add
("{res} = {value1} == {value2};")
1689 else if value2
.mtype
.ctype
!= "val*" then
1690 self.add
("{res} = 0; /* incompatible types {value1.mtype} vs. {value2.mtype}*/")
1692 var mtype1
= value1
.mtype
.as(MClassType)
1693 self.require_declaration
("class_{mtype1.c_name}")
1694 self.add
("{res} = ({value2} != NULL) && ({value2}->class == &class_{mtype1.c_name});")
1695 self.add
("if ({res}) \{")
1696 self.add
("{res} = ({self.autobox(value2, value1.mtype)} == {value1});")
1701 var maybe_null
= true
1702 var test
= new Array[String]
1703 var t1
= value1
.mcasttype
1704 if t1
isa MNullableType then
1705 test
.add
("{value1} != NULL")
1710 var t2
= value2
.mcasttype
1711 if t2
isa MNullableType then
1712 test
.add
("{value2} != NULL")
1718 var incompatible
= false
1720 if t1
.ctype
!= "val*" then
1723 # No need to compare class
1724 else if t2
.ctype
!= "val*" then
1726 else if can_be_primitive
(value2
) then
1727 test
.add
("{value1}->class == {value2}->class")
1731 else if t2
.ctype
!= "val*" then
1733 if can_be_primitive
(value1
) then
1734 test
.add
("{value1}->class == {value2}->class")
1742 if incompatible
then
1744 self.add
("{res} = {value1} == {value2}; /* incompatible types {t1} vs. {t2}; but may be NULL*/")
1747 self.add
("{res} = 0; /* incompatible types {t1} vs. {t2}; cannot be NULL */")
1751 if primitive
!= null then
1752 test
.add
("((struct instance_{primitive.c_name}*){value1})->value == ((struct instance_{primitive.c_name}*){value2})->value")
1753 else if can_be_primitive
(value1
) and can_be_primitive
(value2
) then
1754 test
.add
("{value1}->class == {value2}->class")
1755 var s
= new Array[String]
1756 for t
, v
in self.compiler
.box_kinds
do
1757 s
.add
"({value1}->class->box_kind == {v} && ((struct instance_{t.c_name}*){value1})->value == ((struct instance_{t.c_name}*){value2})->value)"
1759 test
.add
("({s.join(" || ")})")
1761 self.add
("{res} = {value1} == {value2};")
1764 self.add
("{res} = {value1} == {value2} || ({test.join(" && ")});")
1768 fun can_be_primitive
(value
: RuntimeVariable): Bool
1770 var t
= value
.mcasttype
.as_notnullable
1771 if not t
isa MClassType then return false
1772 var k
= t
.mclass
.kind
1773 return k
== interface_kind
or t
.ctype
!= "val*"
1776 fun maybe_null
(value
: RuntimeVariable): Bool
1778 var t
= value
.mcasttype
1779 return t
isa MNullableType or t
isa MNullType
1782 redef fun array_instance
(array
, elttype
)
1784 var nclass
= self.get_class
("NativeArray")
1785 var arrayclass
= self.get_class
("Array")
1786 var arraytype
= arrayclass
.get_mtype
([elttype
])
1787 var res
= self.init_instance
(arraytype
)
1788 self.add
("\{ /* {res} = array_instance Array[{elttype}] */")
1789 var length
= self.int_instance
(array
.length
)
1790 var nat
= native_array_instance
(elttype
, length
)
1791 for i
in [0..array
.length
[ do
1792 var r
= self.autobox
(array
[i
], self.object_type
)
1793 self.add
("((struct instance_{nclass.c_name}*){nat})->values[{i}] = (val*) {r};")
1795 self.send
(self.get_property
("with_native", arrayclass
.intro
.bound_mtype
), [res
, nat
, length
])
1800 redef fun native_array_instance
(elttype
: MType, length
: RuntimeVariable): RuntimeVariable
1802 var mtype
= self.get_class
("NativeArray").get_mtype
([elttype
])
1803 self.require_declaration
("NEW_{mtype.mclass.c_name}")
1804 assert mtype
isa MGenericType
1805 var compiler
= self.compiler
1806 if mtype
.need_anchor
then
1807 hardening_live_open_type
(mtype
)
1808 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1809 var recv
= self.frame
.arguments
.first
1810 var recv_type_info
= self.type_info
(recv
)
1811 self.require_declaration
(mtype
.const_color
)
1812 return self.new_expr
("NEW_{mtype.mclass.c_name}({length}, {recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype
)
1814 compiler
.undead_types
.add
(mtype
)
1815 self.require_declaration
("type_{mtype.c_name}")
1816 return self.new_expr
("NEW_{mtype.mclass.c_name}({length}, &type_{mtype.c_name})", mtype
)
1819 redef fun native_array_def
(pname
, ret_type
, arguments
)
1821 var elttype
= arguments
.first
.mtype
1822 var nclass
= self.get_class
("NativeArray")
1823 var recv
= "((struct instance_{nclass.c_name}*){arguments[0]})->values"
1824 if pname
== "[]" then
1825 self.ret
(self.new_expr
("{recv}[{arguments[1]}]", ret_type
.as(not null)))
1827 else if pname
== "[]=" then
1828 self.add
("{recv}[{arguments[1]}]={arguments[2]};")
1830 else if pname
== "length" then
1831 self.ret
(self.new_expr
("((struct instance_{nclass.c_name}*){arguments[0]})->length", ret_type
.as(not null)))
1833 else if pname
== "copy_to" then
1834 var recv1
= "((struct instance_{nclass.c_name}*){arguments[1]})->values"
1835 self.add
("memmove({recv1}, {recv}, {arguments[2]}*sizeof({elttype.ctype}));")
1840 redef fun calloc_array
(ret_type
, arguments
)
1842 var mclass
= self.get_class
("ArrayCapable")
1843 var ft
= mclass
.mparameters
.first
1844 var res
= self.native_array_instance
(ft
, arguments
[1])
1848 fun link_unresolved_type
(mclassdef
: MClassDef, mtype
: MType) do
1849 assert mtype
.need_anchor
1850 var compiler
= self.compiler
1851 if not compiler
.live_unresolved_types
.has_key
(self.frame
.mpropdef
.mclassdef
) then
1852 compiler
.live_unresolved_types
[self.frame
.mpropdef
.mclassdef
] = new HashSet[MType]
1854 compiler
.live_unresolved_types
[self.frame
.mpropdef
.mclassdef
].add
(mtype
)
1858 redef class MMethodDef
1859 # The C function associated to a mmethoddef
1860 fun separate_runtime_function
: SeparateRuntimeFunction
1862 var res
= self.separate_runtime_function_cache
1864 var recv
= mclassdef
.bound_mtype
1865 var msignature
= msignature
.resolve_for
(recv
, recv
, mclassdef
.mmodule
, true)
1866 res
= new SeparateRuntimeFunction(self, recv
, msignature
, c_name
)
1867 self.separate_runtime_function_cache
= res
1871 private var separate_runtime_function_cache
: nullable SeparateRuntimeFunction
1873 # The C function associated to a mmethoddef, that can be stored into a VFT of a class
1874 # The first parameter (the reciever) is always typed by val* in order to accept an object value
1875 # The C-signature is always compatible with the intro
1876 fun virtual_runtime_function
: SeparateRuntimeFunction
1878 var res
= self.virtual_runtime_function_cache
1880 # Because the function is virtual, the signature must match the one of the original class
1881 var intromclassdef
= mproperty
.intro
.mclassdef
1882 var recv
= intromclassdef
.bound_mtype
1884 res
= separate_runtime_function
1885 if res
.called_recv
== recv
then
1886 self.virtual_runtime_function_cache
= res
1890 var msignature
= mproperty
.intro
.msignature
.resolve_for
(recv
, recv
, intromclassdef
.mmodule
, true)
1892 if recv
.ctype
== res
.called_recv
.ctype
and msignature
.c_equiv
(res
.called_signature
) then
1893 self.virtual_runtime_function_cache
= res
1897 res
= new SeparateRuntimeFunction(self, recv
, msignature
, "VIRTUAL_{c_name}")
1898 self.virtual_runtime_function_cache
= res
1903 private var virtual_runtime_function_cache
: nullable SeparateRuntimeFunction
1906 redef class MSignature
1907 # Does the C-version of `self` the same than the C-version of `other`?
1908 fun c_equiv
(other
: MSignature): Bool
1910 if self == other
then return true
1911 if arity
!= other
.arity
then return false
1912 for i
in [0..arity
[ do
1913 if mparameters
[i
].mtype
.ctype
!= other
.mparameters
[i
].mtype
.ctype
then return false
1915 if return_mtype
!= other
.return_mtype
then
1916 if return_mtype
== null or other
.return_mtype
== null then return false
1917 if return_mtype
.ctype
!= other
.return_mtype
.ctype
then return false
1923 # The C function associated to a methoddef separately compiled
1924 class SeparateRuntimeFunction
1925 super AbstractRuntimeFunction
1927 # The call-side static receiver
1928 var called_recv
: MType
1930 # The call-side static signature
1931 var called_signature
: MSignature
1933 # The name on the compiled method
1934 redef var build_c_name
: String
1936 # Statically call the original body instead
1937 var is_thunk
= false
1939 redef fun to_s
do return self.mmethoddef
.to_s
1941 # The C return type (something or `void`)
1942 var c_ret
: String is lazy
do
1943 var ret
= called_signature
.return_mtype
1951 # The C signature (only the parmeter part)
1952 var c_sig
: String is lazy
do
1953 var sig
= new FlatBuffer
1954 sig
.append
("({called_recv.ctype} self")
1955 for i
in [0..called_signature
.arity
[ do
1956 var mtype
= called_signature
.mparameters
[i
].mtype
1957 if i
== called_signature
.vararg_rank
then
1958 mtype
= mmethoddef
.mclassdef
.mmodule
.get_primitive_class
("Array").get_mtype
([mtype
])
1960 sig
.append
(", {mtype.ctype} p{i}")
1966 # The C type for the function pointer.
1967 var c_funptrtype
: String is lazy
do return "{c_ret}(*){c_sig}"
1969 # The arguments, as generated by `compile_to_c`
1970 private var arguments
: Array[RuntimeVariable] is noinit
1972 redef fun compile_to_c
(compiler
)
1974 var mmethoddef
= self.mmethoddef
1976 var recv
= self.mmethoddef
.mclassdef
.bound_mtype
1977 var v
= compiler
.new_visitor
1978 var selfvar
= new RuntimeVariable("self", called_recv
, recv
)
1979 var arguments
= new Array[RuntimeVariable]
1980 var frame
= new StaticFrame(v
, mmethoddef
, recv
, arguments
)
1983 var msignature
= called_signature
1984 var ret
= called_signature
.return_mtype
1986 var sig
= new FlatBuffer
1987 var comment
= new FlatBuffer
1990 sig
.append
(self.c_name
)
1992 comment
.append
("({selfvar}: {selfvar.mtype}")
1993 arguments
.add
(selfvar
)
1994 for i
in [0..msignature
.arity
[ do
1995 var mtype
= msignature
.mparameters
[i
].mtype
1996 if i
== msignature
.vararg_rank
then
1997 mtype
= v
.get_class
("Array").get_mtype
([mtype
])
1999 comment
.append
(", {mtype}")
2000 var argvar
= new RuntimeVariable("p{i}", mtype
, mtype
)
2001 arguments
.add
(argvar
)
2005 comment
.append
(": {ret}")
2007 compiler
.provide_declaration
(self.c_name
, "{sig};")
2008 self.arguments
= arguments
.to_a
2010 v
.add_decl
("/* method {self} for {comment} */")
2011 v
.add_decl
("{sig} \{")
2013 frame
.returnvar
= v
.new_var
(ret
)
2015 frame
.returnlabel
= v
.get_name
("RET_LABEL")
2018 var subret
= v
.call
(mmethoddef
, recv
, arguments
)
2020 assert subret
!= null
2021 v
.assign
(frame
.returnvar
.as(not null), subret
)
2024 mmethoddef
.compile_inside_to_c
(v
, arguments
)
2027 v
.add
("{frame.returnlabel.as(not null)}:;")
2029 v
.add
("return {frame.returnvar.as(not null)};")
2032 compiler
.names
[self.c_name
] = "{mmethoddef.full_name} ({mmethoddef.location.file.filename}:{mmethoddef.location.line_start})"
2035 # Compile the trampolines used to implement late-binding.
2037 # See `opt_trampoline_call`.
2038 fun compile_trampolines
(compiler
: SeparateCompiler)
2040 var recv
= self.mmethoddef
.mclassdef
.bound_mtype
2041 var selfvar
= arguments
.first
2042 var ret
= called_signature
.return_mtype
2044 if mmethoddef
.is_intro
and recv
.ctype
== "val*" then
2045 var m
= mmethoddef
.mproperty
2046 var n2
= "CALL_" + m
.const_color
2047 compiler
.provide_declaration
(n2
, "{c_ret} {n2}{c_sig};")
2048 var v2
= compiler
.new_visitor
2049 v2
.add
"{c_ret} {n2}{c_sig} \{"
2050 v2
.require_declaration
(m
.const_color
)
2051 var call
= "(({c_funptrtype})({selfvar}->class->vft[{m.const_color}]))({arguments.join(", ")});"
2053 v2
.add
"return {call}"
2061 if mmethoddef
.has_supercall
and recv
.ctype
== "val*" then
2063 var n2
= "CALL_" + m
.const_color
2064 compiler
.provide_declaration
(n2
, "{c_ret} {n2}{c_sig};")
2065 var v2
= compiler
.new_visitor
2066 v2
.add
"{c_ret} {n2}{c_sig} \{"
2067 v2
.require_declaration
(m
.const_color
)
2068 var call
= "(({c_funptrtype})({selfvar}->class->vft[{m.const_color}]))({arguments.join(", ")});"
2070 v2
.add
"return {call}"
2081 var const_color
: String is lazy
do return "COLOR_{c_name}"
2084 interface PropertyLayoutElement end
2086 redef class MProperty
2087 super PropertyLayoutElement
2090 redef class MPropDef
2091 super PropertyLayoutElement
2094 redef class AMethPropdef
2095 # The semi-global compilation does not support inlining calls to extern news
2096 redef fun can_inline
2099 if m
!= null and m
.mproperty
.is_init
and m
.is_extern
then return false