1 /* d-builtins.cc -- GCC builtins support for D.
2 Copyright (C) 2006-2020 Free Software Foundation, Inc.
4 GCC is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3, or (at your option)
9 GCC is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with GCC; see the file COPYING3. If not see
16 <http://www.gnu.org/licenses/>. */
20 #include "coretypes.h"
22 #include "dmd/attrib.h"
23 #include "dmd/aggregate.h"
25 #include "dmd/declaration.h"
26 #include "dmd/expression.h"
27 #include "dmd/identifier.h"
28 #include "dmd/module.h"
29 #include "dmd/mtype.h"
32 #include "fold-const.h"
33 #include "diagnostic.h"
34 #include "langhooks.h"
36 #include "common/common-target.h"
37 #include "stringpool.h"
38 #include "stor-layout.h"
44 static GTY(()) vec
<tree
, va_gc
> *gcc_builtins_functions
= NULL
;
45 static GTY(()) vec
<tree
, va_gc
> *gcc_builtins_libfuncs
= NULL
;
46 static GTY(()) vec
<tree
, va_gc
> *gcc_builtins_types
= NULL
;
48 /* Record built-in types and their associated decls for re-use when
49 generating the `gcc.builtins' module. */
57 builtin_data (Type
*t
, tree c
, Dsymbol
*d
= NULL
)
58 : dtype(t
), ctype(c
), dsym(d
)
62 static vec
<builtin_data
> builtin_converted_decls
;
64 /* Build D frontend type from tree TYPE type given. This will set the
65 back-end type symbol directly for complex types to save build_ctype()
66 the work. For other types, it is not useful or will cause errors, such
67 as casting from `C char' to `D char', which also means that `char *`
68 needs to be specially handled. */
71 build_frontend_type (tree type
)
76 if (TYPE_READONLY (type
))
78 if (TYPE_VOLATILE (type
))
81 /* If we've seen the type before, re-use the converted decl. */
82 for (size_t i
= 0; i
< builtin_converted_decls
.length (); ++i
)
84 tree t
= builtin_converted_decls
[i
].ctype
;
85 if (TYPE_MAIN_VARIANT (t
) == TYPE_MAIN_VARIANT (type
))
86 return builtin_converted_decls
[i
].dtype
;
89 switch (TREE_CODE (type
))
92 dtype
= build_frontend_type (TREE_TYPE (type
));
95 /* Check for char * first. Needs to be done for chars/string. */
96 if (TYPE_MAIN_VARIANT (TREE_TYPE (type
)) == char_type_node
)
97 return Type::tchar
->addMod (dtype
->mod
)->pointerTo ()->addMod (mod
);
99 if (dtype
->ty
== Tfunction
)
100 return (TypePointer::create (dtype
))->addMod (mod
);
102 return dtype
->pointerTo ()->addMod (mod
);
107 dtype
= build_frontend_type (TREE_TYPE (type
));
110 /* Want to assign ctype directly so that the REFERENCE_TYPE code
111 can be turned into as an `inout' argument. Can't use pointerTo(),
112 because the returned Type is shared. */
113 dtype
= (TypePointer::create (dtype
))->addMod (mod
);
115 builtin_converted_decls
.safe_push (builtin_data (dtype
, type
));
121 /* Should be no need for size checking. */
122 return Type::tbool
->addMod (mod
);
126 unsigned size
= TREE_INT_CST_LOW (TYPE_SIZE_UNIT (type
));
127 bool unsignedp
= TYPE_UNSIGNED (type
);
129 /* For now, skip support for cent/ucent until the frontend
130 has better support for handling it. */
131 for (size_t i
= Tint8
; i
<= Tuns64
; i
++)
133 dtype
= Type::basic
[i
];
135 /* Search for type matching size and signedness. */
136 if (unsignedp
!= dtype
->isunsigned ()
137 || size
!= dtype
->size ())
140 return dtype
->addMod (mod
);
147 unsigned size
= TREE_INT_CST_LOW (TYPE_SIZE_UNIT (type
));
149 for (size_t i
= Tfloat32
; i
<= Tfloat80
; i
++)
151 dtype
= Type::basic
[i
];
153 /* Search for type matching size. */
154 if (dtype
->size () != size
)
157 return dtype
->addMod (mod
);
164 unsigned size
= TREE_INT_CST_LOW (TYPE_SIZE_UNIT (type
));
165 for (size_t i
= Tcomplex32
; i
<= Tcomplex80
; i
++)
167 dtype
= Type::basic
[i
];
169 /* Search for type matching size. */
170 if (dtype
->size () != size
)
173 return dtype
->addMod (mod
);
179 return Type::tvoid
->addMod (mod
);
182 dtype
= build_frontend_type (TREE_TYPE (type
));
185 tree index
= TYPE_DOMAIN (type
);
186 tree ub
= TYPE_MAX_VALUE (index
);
187 tree lb
= TYPE_MIN_VALUE (index
);
189 tree length
= fold_build2 (MINUS_EXPR
, TREE_TYPE (lb
), ub
, lb
);
190 length
= size_binop (PLUS_EXPR
, size_one_node
,
191 convert (sizetype
, length
));
193 dtype
= dtype
->sarrayOf (TREE_INT_CST_LOW (length
))->addMod (mod
);
194 builtin_converted_decls
.safe_push (builtin_data (dtype
, type
));
201 unsigned HOST_WIDE_INT nunits
;
202 if (!TYPE_VECTOR_SUBPARTS (type
).is_constant (&nunits
))
205 dtype
= build_frontend_type (TREE_TYPE (type
));
209 dtype
= dtype
->sarrayOf (nunits
)->addMod (mod
);
210 if (dtype
->nextOf ()->isTypeBasic () == NULL
)
213 dtype
= (TypeVector::create (Loc (), dtype
))->addMod (mod
);
214 builtin_converted_decls
.safe_push (builtin_data (dtype
, type
));
220 Identifier
*ident
= TYPE_IDENTIFIER (type
) ?
221 Identifier::idPool (IDENTIFIER_POINTER (TYPE_IDENTIFIER (type
))) : NULL
;
223 /* Neither the `object' and `gcc.builtins' modules will not exist when
224 this is called. Use a stub 'object' module parent in the meantime.
225 If `gcc.builtins' is later imported, the parent will be overridden
226 with the correct module symbol. */
227 static Identifier
*object
= Identifier::idPool ("object");
228 static Module
*stubmod
= Module::create ("object.d", object
, 0, 0);
230 StructDeclaration
*sdecl
= StructDeclaration::create (Loc (), ident
,
232 sdecl
->parent
= stubmod
;
233 sdecl
->structsize
= int_size_in_bytes (type
);
234 sdecl
->alignsize
= TYPE_ALIGN_UNIT (type
);
235 sdecl
->alignment
= STRUCTALIGN_DEFAULT
;
236 sdecl
->sizeok
= SIZEOKdone
;
237 sdecl
->type
= (TypeStruct::create (sdecl
))->addMod (mod
);
238 sdecl
->type
->ctype
= type
;
239 sdecl
->type
->merge2 ();
241 /* Add both named and anonymous fields as members of the struct.
242 Anonymous fields still need a name in D, so call them "__pad%d". */
243 int anonfield_id
= 0;
244 sdecl
->members
= new Dsymbols
;
246 for (tree field
= TYPE_FIELDS (type
); field
; field
= DECL_CHAIN (field
))
248 Type
*ftype
= build_frontend_type (TREE_TYPE (field
));
251 delete sdecl
->members
;
256 if (DECL_NAME (field
) == NULL_TREE
)
257 fident
= Identifier::generateId ("__pad", anonfield_id
++);
260 const char *name
= IDENTIFIER_POINTER (DECL_NAME (field
));
261 fident
= Identifier::idPool (name
);
264 VarDeclaration
*vd
= VarDeclaration::create (Loc (), ftype
, fident
,
267 vd
->offset
= tree_to_uhwi (byte_position (field
));
268 vd
->semanticRun
= PASSsemanticdone
;
270 sdecl
->members
->push (vd
);
271 sdecl
->fields
.push (vd
);
275 builtin_converted_decls
.safe_push (builtin_data (dtype
, type
, sdecl
));
280 dtype
= build_frontend_type (TREE_TYPE (type
));
283 tree parms
= TYPE_ARG_TYPES (type
);
286 Parameters
*args
= new Parameters
;
287 args
->reserve (list_length (parms
));
289 /* Attempt to convert all parameter types. */
290 for (tree parm
= parms
; parm
!= NULL_TREE
; parm
= TREE_CHAIN (parm
))
292 tree argtype
= TREE_VALUE (parm
);
293 if (argtype
== void_type_node
)
299 StorageClass sc
= STCundefined
;
300 if (TREE_CODE (argtype
) == REFERENCE_TYPE
)
302 argtype
= TREE_TYPE (argtype
);
306 Type
*targ
= build_frontend_type (argtype
);
313 args
->push (Parameter::create (sc
, targ
, NULL
, NULL
));
316 /* GCC generic and placeholder built-ins are marked as variadic, yet
317 have no named parameters, and so can't be represented in D. */
318 if (args
->length
!= 0 || !varargs_p
)
320 dtype
= TypeFunction::create (args
, dtype
, varargs_p
, LINKc
);
321 return dtype
->addMod (mod
);
333 /* Attempt to convert GCC evaluated CST to a D Frontend Expression.
334 This is used for getting the CTFE value out of a const-folded builtin,
335 returns NULL if it cannot convert CST. */
338 d_eval_constant_expression (tree cst
)
340 STRIP_TYPE_NOPS (cst
);
341 Type
*type
= build_frontend_type (TREE_TYPE (cst
));
345 /* Convert our GCC CST tree into a D Expression. This seems like we are
346 trying too hard, as these will only be converted back to a tree again
347 later in the codegen pass, but satisfies the need to have GCC built-ins
348 CTFE-able in the frontend. */
349 tree_code code
= TREE_CODE (cst
);
350 if (code
== COMPLEX_CST
)
352 real_value re
= TREE_REAL_CST (TREE_REALPART (cst
));
353 real_value im
= TREE_REAL_CST (TREE_IMAGPART (cst
));
354 complex_t value
= complex_t (ldouble (re
), ldouble (im
));
355 return ComplexExp::create (Loc (), value
, type
);
357 else if (code
== INTEGER_CST
)
359 dinteger_t value
= TREE_INT_CST_LOW (cst
);
360 return IntegerExp::create (Loc (), value
, type
);
362 else if (code
== REAL_CST
)
364 real_value value
= TREE_REAL_CST (cst
);
365 return RealExp::create (Loc (), ldouble (value
), type
);
367 else if (code
== STRING_CST
)
369 const void *string
= TREE_STRING_POINTER (cst
);
370 size_t len
= TREE_STRING_LENGTH (cst
);
371 return StringExp::create (Loc (), CONST_CAST (void *, string
), len
);
373 else if (code
== VECTOR_CST
)
375 dinteger_t nunits
= VECTOR_CST_NELTS (cst
).to_constant ();
376 Expressions
*elements
= new Expressions
;
377 elements
->setDim (nunits
);
379 for (size_t i
= 0; i
< nunits
; i
++)
382 = d_eval_constant_expression (VECTOR_CST_ELT (cst
, i
));
386 (*elements
)[i
] = elem
;
389 Expression
*e
= ArrayLiteralExp::create (Loc (), elements
);
390 e
->type
= ((TypeVector
*) type
)->basetype
;
392 return VectorExp::create (Loc (), e
, type
);
399 /* Callback for TARGET_D_CPU_VERSIONS and TARGET_D_OS_VERSIONS.
400 Adds IDENT to the list of predefined version identifiers. */
403 d_add_builtin_version (const char* ident
)
405 /* For now, we need to tell the D frontend what platform is being targeted.
406 This should be removed once the frontend has been fixed. */
407 if (strcmp (ident
, "linux") == 0)
408 global
.params
.isLinux
= true;
409 else if (strcmp (ident
, "OSX") == 0)
410 global
.params
.isOSX
= true;
411 else if (strcmp (ident
, "Windows") == 0)
412 global
.params
.isWindows
= true;
413 else if (strcmp (ident
, "FreeBSD") == 0)
414 global
.params
.isFreeBSD
= true;
415 else if (strcmp (ident
, "OpenBSD") == 0)
416 global
.params
.isOpenBSD
= true;
417 else if (strcmp (ident
, "Solaris") == 0)
418 global
.params
.isSolaris
= true;
419 /* The is64bit field only refers to x86_64 target. */
420 else if (strcmp (ident
, "X86_64") == 0)
421 global
.params
.is64bit
= true;
422 /* No other fields are required to be set for the frontend. */
424 VersionCondition::addPredefinedGlobalIdent (ident
);
427 /* Initialize the list of all the predefined version identifiers. */
430 d_init_versions (void)
432 VersionCondition::addPredefinedGlobalIdent ("GNU");
433 VersionCondition::addPredefinedGlobalIdent ("D_Version2");
435 if (BYTES_BIG_ENDIAN
)
436 VersionCondition::addPredefinedGlobalIdent ("BigEndian");
438 VersionCondition::addPredefinedGlobalIdent ("LittleEndian");
440 if (targetm_common
.except_unwind_info (&global_options
) == UI_SJLJ
)
441 VersionCondition::addPredefinedGlobalIdent ("GNU_SjLj_Exceptions");
442 else if (targetm_common
.except_unwind_info (&global_options
) == UI_SEH
)
443 VersionCondition::addPredefinedGlobalIdent ("GNU_SEH_Exceptions");
444 else if (targetm_common
.except_unwind_info (&global_options
) == UI_DWARF2
)
445 VersionCondition::addPredefinedGlobalIdent ("GNU_DWARF2_Exceptions");
447 if (!targetm
.have_tls
)
448 VersionCondition::addPredefinedGlobalIdent ("GNU_EMUTLS");
450 if (STACK_GROWS_DOWNWARD
)
451 VersionCondition::addPredefinedGlobalIdent ("GNU_StackGrowsDown");
453 /* Should define this anyway to set us apart from the competition. */
454 VersionCondition::addPredefinedGlobalIdent ("GNU_InlineAsm");
456 /* LP64 only means 64bit pointers in D. */
457 if (global
.params
.isLP64
)
458 VersionCondition::addPredefinedGlobalIdent ("D_LP64");
460 /* Setting `global.params.cov' forces module info generation which is
461 not needed for the GCC coverage implementation. Instead, just
462 test flag_test_coverage while leaving `global.params.cov' unset. */
463 if (flag_test_coverage
)
464 VersionCondition::addPredefinedGlobalIdent ("D_Coverage");
466 VersionCondition::addPredefinedGlobalIdent ("D_PIC");
468 if (global
.params
.doDocComments
)
469 VersionCondition::addPredefinedGlobalIdent ("D_Ddoc");
471 if (global
.params
.useUnitTests
)
472 VersionCondition::addPredefinedGlobalIdent ("unittest");
474 if (global
.params
.useAssert
)
475 VersionCondition::addPredefinedGlobalIdent ("assert");
477 if (global
.params
.useArrayBounds
== BOUNDSCHECKoff
)
478 VersionCondition::addPredefinedGlobalIdent ("D_NoBoundsChecks");
480 if (global
.params
.betterC
)
481 VersionCondition::addPredefinedGlobalIdent ("D_BetterC");
484 VersionCondition::addPredefinedGlobalIdent ("D_ModuleInfo");
485 VersionCondition::addPredefinedGlobalIdent ("D_Exceptions");
486 VersionCondition::addPredefinedGlobalIdent ("D_TypeInfo");
489 VersionCondition::addPredefinedGlobalIdent ("all");
491 /* Emit all target-specific version identifiers. */
492 targetdm
.d_cpu_versions ();
493 targetdm
.d_os_versions ();
495 VersionCondition::addPredefinedGlobalIdent ("CppRuntime_Gcc");
498 /* A helper for d_build_builtins_module. Return a new ALIAS for TYPE.
499 Analogous to `alias ALIAS = TYPE' in D code. */
501 static AliasDeclaration
*
502 build_alias_declaration (const char *alias
, Type
*type
)
504 return AliasDeclaration::create (Loc (), Identifier::idPool (alias
), type
);
507 /* A helper function for Target::loadModule. Generates all code for the
508 `gcc.builtins' module, whose frontend symbol should be M. */
511 d_build_builtins_module (Module
*m
)
513 Dsymbols
*members
= new Dsymbols
;
516 for (size_t i
= 0; vec_safe_iterate (gcc_builtins_functions
, i
, &decl
); ++i
)
518 const char *name
= IDENTIFIER_POINTER (DECL_NAME (decl
));
520 = (TypeFunction
*) build_frontend_type (TREE_TYPE (decl
));
522 /* Cannot create built-in function type for DECL. */
526 /* A few notes on D2 attributes applied to builtin functions:
527 - It is assumed that built-ins solely provided by the compiler are
528 considered @safe and pure.
529 - Built-ins that correspond to `extern(C)' functions in the standard
530 library that have `__attribute__(nothrow)' are considered `@trusted'.
531 - The purity of a built-in can vary depending on compiler flags set
532 upon initialization, or by the `-foptions' passed, such as
533 flag_unsafe_math_optimizations.
534 - Built-ins never use the GC or raise a D exception, and so are always
535 marked as `nothrow' and `@nogc'. */
536 tf
->purity
= DECL_PURE_P (decl
) ? PUREstrong
537 : TREE_READONLY (decl
) ? PUREconst
538 : DECL_IS_NOVOPS (decl
) ? PUREweak
539 : !DECL_ASSEMBLER_NAME_SET_P (decl
) ? PUREweak
541 tf
->trust
= !DECL_ASSEMBLER_NAME_SET_P (decl
) ? TRUSTsafe
542 : TREE_NOTHROW (decl
) ? TRUSTtrusted
544 tf
->isnothrow
= true;
547 FuncDeclaration
*func
548 = FuncDeclaration::create (Loc (), Loc (),
549 Identifier::idPool (name
),
551 DECL_LANG_SPECIFIC (decl
) = build_lang_decl (func
);
553 func
->builtin
= BUILTINyes
;
555 members
->push (func
);
558 for (size_t i
= 0; vec_safe_iterate (gcc_builtins_types
, i
, &decl
); ++i
)
560 const char *name
= IDENTIFIER_POINTER (DECL_NAME (decl
));
561 Type
*t
= build_frontend_type (TREE_TYPE (decl
));
563 /* Cannot create built-in type for DECL. */
567 members
->push (build_alias_declaration (name
, t
));
570 /* Iterate through the target-specific builtin types for va_list. */
571 if (targetm
.enum_va_list_p
)
576 for (int i
= 0; targetm
.enum_va_list_p (i
, &name
, &type
); ++i
)
578 Type
*t
= build_frontend_type (type
);
579 /* Cannot create built-in type. */
583 members
->push (build_alias_declaration (name
, t
));
587 /* Push out declarations for any RECORD_TYPE types encountered when building
588 all builtin functions and types. */
589 for (size_t i
= 0; i
< builtin_converted_decls
.length (); ++i
)
591 /* Currently, there is no need to run semantic, but we do want to output
592 initializers, typeinfo, and others on demand. */
593 Dsymbol
*dsym
= builtin_converted_decls
[i
].dsym
;
594 if (dsym
!= NULL
&& !dsym
->isAnonymous ())
597 members
->push (dsym
);
601 /* va_list should already be built, so no need to convert to D type again. */
602 StructDeclaration
*sd
= (Type::tvalist
->ty
== Tstruct
)
603 ? ((TypeStruct
*) Type::tvalist
)->sym
: NULL
;
604 if (sd
== NULL
|| !sd
->isAnonymous ())
606 members
->push (build_alias_declaration ("__builtin_va_list",
611 sd
->ident
= Identifier::idPool ("__builtin_va_list");
615 /* Expose target-specific integer types to the builtins module. */
617 Type
*t
= build_frontend_type (long_integer_type_node
);
618 members
->push (build_alias_declaration ("__builtin_clong", t
));
620 t
= build_frontend_type (long_unsigned_type_node
);
621 members
->push (build_alias_declaration ("__builtin_culong", t
));
623 t
= build_frontend_type (long_long_integer_type_node
);
624 members
->push (build_alias_declaration ("__builtin_clonglong", t
));
626 t
= build_frontend_type (long_long_unsigned_type_node
);
627 members
->push (build_alias_declaration ("__builtin_culonglong", t
));
629 t
= build_frontend_type (lang_hooks
.types
.type_for_mode (byte_mode
, 0));
630 members
->push (build_alias_declaration ("__builtin_machine_byte", t
));
632 t
= build_frontend_type (lang_hooks
.types
.type_for_mode (byte_mode
, 1));
633 members
->push (build_alias_declaration ("__builtin_machine_ubyte", t
));
635 t
= build_frontend_type (lang_hooks
.types
.type_for_mode (word_mode
, 0));
636 members
->push (build_alias_declaration ("__builtin_machine_int", t
));
638 t
= build_frontend_type (lang_hooks
.types
.type_for_mode (word_mode
, 1));
639 members
->push (build_alias_declaration ("__builtin_machine_uint", t
));
641 t
= build_frontend_type (lang_hooks
.types
.type_for_mode (ptr_mode
, 0));
642 members
->push (build_alias_declaration ("__builtin_pointer_int", t
));
644 t
= build_frontend_type (lang_hooks
.types
.type_for_mode (ptr_mode
, 1));
645 members
->push (build_alias_declaration ("__builtin_pointer_uint", t
));
647 /* _Unwind_Word has its own target specific mode. */
648 machine_mode mode
= targetm
.unwind_word_mode ();
649 t
= build_frontend_type (lang_hooks
.types
.type_for_mode (mode
, 0));
650 members
->push (build_alias_declaration ("__builtin_unwind_int", t
));
652 t
= build_frontend_type (lang_hooks
.types
.type_for_mode (mode
, 1));
653 members
->push (build_alias_declaration ("__builtin_unwind_uint", t
));
656 m
->members
->push (LinkDeclaration::create (LINKc
, members
));
659 /* Search for any `extern(C)' functions that match any known GCC library builtin
660 function in D and override its internal back-end symbol. */
663 maybe_set_builtin_1 (Dsymbol
*d
)
665 AttribDeclaration
*ad
= d
->isAttribDeclaration ();
666 FuncDeclaration
*fd
= d
->isFuncDeclaration ();
670 /* Recursively search through attribute decls. */
671 Dsymbols
*decls
= ad
->include (NULL
, NULL
);
672 if (decls
&& decls
->length
)
674 for (size_t i
= 0; i
< decls
->length
; i
++)
676 Dsymbol
*sym
= (*decls
)[i
];
677 maybe_set_builtin_1 (sym
);
681 else if (fd
&& !fd
->fbody
)
685 for (size_t i
= 0; vec_safe_iterate (gcc_builtins_libfuncs
, i
, &t
); ++i
)
687 gcc_assert (DECL_ASSEMBLER_NAME_SET_P (t
));
689 const char *name
= IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (t
));
690 if (fd
->ident
!= Identifier::idPool (name
))
693 /* Found a match, tell the frontend this is a builtin. */
694 DECL_LANG_SPECIFIC (t
) = build_lang_decl (fd
);
696 fd
->builtin
= BUILTINyes
;
702 /* A helper function for Target::loadModule. Traverse all members in module M
703 to search for any functions that can be mapped to any GCC builtin. */
706 d_maybe_set_builtin (Module
*m
)
708 if (!m
|| !m
->members
)
711 for (size_t i
= 0; i
< m
->members
->length
; i
++)
713 Dsymbol
*sym
= (*m
->members
)[i
];
714 maybe_set_builtin_1 (sym
);
718 /* Used to help initialize the builtin-types.def table. When a type of
719 the correct size doesn't exist, use error_mark_node instead of NULL.
720 The latter results in segfaults even when a decl using the type doesn't
724 builtin_type_for_size (int size
, bool unsignedp
)
726 tree type
= lang_hooks
.types
.type_for_size (size
, unsignedp
);
727 return type
? type
: error_mark_node
;
730 /* Support for DEF_BUILTIN. */
733 do_build_builtin_fn (built_in_function fncode
,
735 built_in_class fnclass
,
736 tree fntype
, bool both_p
, bool fallback_p
,
737 tree fnattrs
, bool implicit_p
)
742 if (fntype
== error_mark_node
)
745 gcc_assert ((!both_p
&& !fallback_p
)
746 || !strncmp (name
, "__builtin_",
747 strlen ("__builtin_")));
749 libname
= name
+ strlen ("__builtin_");
751 decl
= add_builtin_function (name
, fntype
, fncode
, fnclass
,
752 fallback_p
? libname
: NULL
, fnattrs
);
754 set_builtin_decl (fncode
, decl
, implicit_p
);
757 /* Standard data types to be used in builtin argument declarations. */
759 static GTY(()) tree string_type_node
;
760 static GTY(()) tree const_string_type_node
;
761 static GTY(()) tree wint_type_node
;
762 static GTY(()) tree intmax_type_node
;
763 static GTY(()) tree uintmax_type_node
;
764 static GTY(()) tree signed_size_type_node
;
767 /* Build nodes that would have been created by the C front-end; necessary
768 for including builtin-types.def and ultimately builtins.def. */
771 d_build_c_type_nodes (void)
773 void_list_node
= build_tree_list (NULL_TREE
, void_type_node
);
774 string_type_node
= build_pointer_type (char_type_node
);
775 const_string_type_node
776 = build_pointer_type (build_qualified_type (char_type_node
,
779 if (strcmp (UINTMAX_TYPE
, "unsigned int") == 0)
781 intmax_type_node
= integer_type_node
;
782 uintmax_type_node
= unsigned_type_node
;
784 else if (strcmp (UINTMAX_TYPE
, "long unsigned int") == 0)
786 intmax_type_node
= long_integer_type_node
;
787 uintmax_type_node
= long_unsigned_type_node
;
789 else if (strcmp (UINTMAX_TYPE
, "long long unsigned int") == 0)
791 intmax_type_node
= long_long_integer_type_node
;
792 uintmax_type_node
= long_long_unsigned_type_node
;
797 signed_size_type_node
= signed_type_for (size_type_node
);
798 wint_type_node
= unsigned_type_node
;
799 pid_type_node
= integer_type_node
;
802 /* Build nodes that are used by the D front-end.
803 These are distinct from C types. */
806 d_build_d_type_nodes (void)
808 /* Integral types. */
809 d_byte_type
= make_signed_type (8);
810 d_ubyte_type
= make_unsigned_type (8);
812 d_short_type
= make_signed_type (16);
813 d_ushort_type
= make_unsigned_type (16);
815 d_int_type
= make_signed_type (32);
816 d_uint_type
= make_unsigned_type (32);
818 d_long_type
= make_signed_type (64);
819 d_ulong_type
= make_unsigned_type (64);
821 d_cent_type
= make_signed_type (128);
822 d_ucent_type
= make_unsigned_type (128);
825 /* Re-define size_t as a D type. */
826 machine_mode type_mode
= TYPE_MODE (size_type_node
);
827 size_type_node
= lang_hooks
.types
.type_for_mode (type_mode
, 1);
830 /* Bool and Character types. */
831 d_bool_type
= make_unsigned_type (1);
832 TREE_SET_CODE (d_bool_type
, BOOLEAN_TYPE
);
834 char8_type_node
= make_unsigned_type (8);
835 TYPE_STRING_FLAG (char8_type_node
) = 1;
837 char16_type_node
= make_unsigned_type (16);
838 TYPE_STRING_FLAG (char16_type_node
) = 1;
840 char32_type_node
= make_unsigned_type (32);
841 TYPE_STRING_FLAG (char32_type_node
) = 1;
843 /* Imaginary types. */
844 ifloat_type_node
= build_distinct_type_copy (float_type_node
);
845 TYPE_IMAGINARY_FLOAT (ifloat_type_node
) = 1;
847 idouble_type_node
= build_distinct_type_copy (double_type_node
);
848 TYPE_IMAGINARY_FLOAT (idouble_type_node
) = 1;
850 ireal_type_node
= build_distinct_type_copy (long_double_type_node
);
851 TYPE_IMAGINARY_FLOAT (ireal_type_node
) = 1;
853 /* Used for ModuleInfo, ClassInfo, and Interface decls. */
854 unknown_type_node
= make_node (RECORD_TYPE
);
856 /* Make sure we get a unique function type, so we can give
857 its pointer type a name. (This wins for gdb). */
859 tree vfunc_type
= make_node (FUNCTION_TYPE
);
860 TREE_TYPE (vfunc_type
) = d_int_type
;
861 TYPE_ARG_TYPES (vfunc_type
) = NULL_TREE
;
862 layout_type (vfunc_type
);
864 vtable_entry_type
= build_pointer_type (vfunc_type
);
867 vtbl_ptr_type_node
= build_pointer_type (vtable_entry_type
);
868 layout_type (vtbl_ptr_type_node
);
870 /* When an object is accessed via an interface, this type appears
871 as the first entry in its vtable. */
873 tree domain
= build_index_type (size_int (3));
874 vtbl_interface_type_node
= build_array_type (ptr_type_node
, domain
);
877 /* Use `void[]' as a generic dynamic array type. */
878 array_type_node
= make_struct_type ("__builtin_void[]", 2,
879 get_identifier ("length"), size_type_node
,
880 get_identifier ("ptr"), ptr_type_node
);
881 TYPE_DYNAMIC_ARRAY (array_type_node
) = 1;
883 null_array_node
= d_array_value (array_type_node
, size_zero_node
,
887 /* Handle default attributes. */
889 enum built_in_attribute
891 #define DEF_ATTR_NULL_TREE(ENUM) ENUM,
892 #define DEF_ATTR_INT(ENUM, VALUE) ENUM,
893 #define DEF_ATTR_STRING(ENUM, VALUE) ENUM,
894 #define DEF_ATTR_IDENT(ENUM, STRING) ENUM,
895 #define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) ENUM,
896 #include "builtin-attrs.def"
897 #undef DEF_ATTR_NULL_TREE
899 #undef DEF_ATTR_STRING
900 #undef DEF_ATTR_IDENT
901 #undef DEF_ATTR_TREE_LIST
905 static GTY(()) tree built_in_attributes
[(int) ATTR_LAST
];
907 /* Initialize the attribute table for all the supported builtins. */
910 d_init_attributes (void)
912 /* Fill in the built_in_attributes array. */
913 #define DEF_ATTR_NULL_TREE(ENUM) \
914 built_in_attributes[(int) ENUM] = NULL_TREE;
915 # define DEF_ATTR_INT(ENUM, VALUE) \
916 built_in_attributes[(int) ENUM] = build_int_cst (NULL_TREE, VALUE);
917 #define DEF_ATTR_STRING(ENUM, VALUE) \
918 built_in_attributes[(int) ENUM] = build_string (strlen (VALUE), VALUE);
919 #define DEF_ATTR_IDENT(ENUM, STRING) \
920 built_in_attributes[(int) ENUM] = get_identifier (STRING);
921 #define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) \
922 built_in_attributes[(int) ENUM] \
923 = tree_cons (built_in_attributes[(int) PURPOSE], \
924 built_in_attributes[(int) VALUE], \
925 built_in_attributes[(int) CHAIN]);
926 #include "builtin-attrs.def"
927 #undef DEF_ATTR_NULL_TREE
929 #undef DEF_ATTR_STRING
930 #undef DEF_ATTR_IDENT
931 #undef DEF_ATTR_TREE_LIST
938 #define DEF_PRIMITIVE_TYPE(NAME, VALUE) NAME,
939 #define DEF_FUNCTION_TYPE_0(NAME, RETURN) NAME,
940 #define DEF_FUNCTION_TYPE_1(NAME, RETURN, ARG1) NAME,
941 #define DEF_FUNCTION_TYPE_2(NAME, RETURN, ARG1, ARG2) NAME,
942 #define DEF_FUNCTION_TYPE_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
943 #define DEF_FUNCTION_TYPE_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME,
944 #define DEF_FUNCTION_TYPE_5(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) NAME,
945 #define DEF_FUNCTION_TYPE_6(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
947 #define DEF_FUNCTION_TYPE_7(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
949 #define DEF_FUNCTION_TYPE_8(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
950 ARG6, ARG7, ARG8) NAME,
951 #define DEF_FUNCTION_TYPE_9(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
952 ARG6, ARG7, ARG8, ARG9) NAME,
953 #define DEF_FUNCTION_TYPE_10(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
954 ARG6, ARG7, ARG8, ARG9, ARG10) NAME,
955 #define DEF_FUNCTION_TYPE_11(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
956 ARG6, ARG7, ARG8, ARG9, ARG10, ARG11) NAME,
957 #define DEF_FUNCTION_TYPE_VAR_0(NAME, RETURN) NAME,
958 #define DEF_FUNCTION_TYPE_VAR_1(NAME, RETURN, ARG1) NAME,
959 #define DEF_FUNCTION_TYPE_VAR_2(NAME, RETURN, ARG1, ARG2) NAME,
960 #define DEF_FUNCTION_TYPE_VAR_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
961 #define DEF_FUNCTION_TYPE_VAR_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME,
962 #define DEF_FUNCTION_TYPE_VAR_5(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
964 #define DEF_FUNCTION_TYPE_VAR_6(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
966 #define DEF_FUNCTION_TYPE_VAR_7(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
968 #define DEF_FUNCTION_TYPE_VAR_11(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
969 ARG6, ARG7, ARG8, ARG9, ARG10, ARG11) NAME,
970 #define DEF_POINTER_TYPE(NAME, TYPE) NAME,
971 #include "builtin-types.def"
972 #undef DEF_PRIMITIVE_TYPE
973 #undef DEF_FUNCTION_TYPE_0
974 #undef DEF_FUNCTION_TYPE_1
975 #undef DEF_FUNCTION_TYPE_2
976 #undef DEF_FUNCTION_TYPE_3
977 #undef DEF_FUNCTION_TYPE_4
978 #undef DEF_FUNCTION_TYPE_5
979 #undef DEF_FUNCTION_TYPE_6
980 #undef DEF_FUNCTION_TYPE_7
981 #undef DEF_FUNCTION_TYPE_8
982 #undef DEF_FUNCTION_TYPE_9
983 #undef DEF_FUNCTION_TYPE_10
984 #undef DEF_FUNCTION_TYPE_11
985 #undef DEF_FUNCTION_TYPE_VAR_0
986 #undef DEF_FUNCTION_TYPE_VAR_1
987 #undef DEF_FUNCTION_TYPE_VAR_2
988 #undef DEF_FUNCTION_TYPE_VAR_3
989 #undef DEF_FUNCTION_TYPE_VAR_4
990 #undef DEF_FUNCTION_TYPE_VAR_5
991 #undef DEF_FUNCTION_TYPE_VAR_6
992 #undef DEF_FUNCTION_TYPE_VAR_7
993 #undef DEF_FUNCTION_TYPE_VAR_11
994 #undef DEF_POINTER_TYPE
998 typedef enum d_builtin_type builtin_type
;
1000 /* A temporary array used in communication with def_fn_type. */
1001 static GTY(()) tree builtin_types
[(int) BT_LAST
+ 1];
1003 /* A helper function for d_init_builtins. Build function type for DEF with
1004 return type RET and N arguments. If VAR is true, then the function should
1005 be variadic after those N arguments.
1007 Takes special care not to ICE if any of the types involved are
1008 error_mark_node, which indicates that said type is not in fact available
1009 (see builtin_type_for_size). In which case the function type as a whole
1010 should be error_mark_node. */
1013 def_fn_type (builtin_type def
, builtin_type ret
, bool var
, int n
, ...)
1016 tree
*args
= XALLOCAVEC (tree
, n
);
1021 for (i
= 0; i
< n
; ++i
)
1023 builtin_type a
= (builtin_type
) va_arg (list
, int);
1024 t
= builtin_types
[a
];
1025 if (t
== error_mark_node
)
1030 t
= builtin_types
[ret
];
1031 if (t
== error_mark_node
)
1034 t
= build_varargs_function_type_array (t
, n
, args
);
1036 t
= build_function_type_array (t
, n
, args
);
1039 builtin_types
[def
] = t
;
1043 /* Create builtin types and functions. VA_LIST_REF_TYPE_NODE and
1044 VA_LIST_ARG_TYPE_NODE are used in builtin-types.def. */
1047 d_define_builtins (tree va_list_ref_type_node ATTRIBUTE_UNUSED
,
1048 tree va_list_arg_type_node ATTRIBUTE_UNUSED
)
1050 #define DEF_PRIMITIVE_TYPE(ENUM, VALUE) \
1051 builtin_types[(int) ENUM] = VALUE;
1052 #define DEF_FUNCTION_TYPE_0(ENUM, RETURN) \
1053 def_fn_type (ENUM, RETURN, 0, 0);
1054 #define DEF_FUNCTION_TYPE_1(ENUM, RETURN, ARG1) \
1055 def_fn_type (ENUM, RETURN, 0, 1, ARG1);
1056 #define DEF_FUNCTION_TYPE_2(ENUM, RETURN, ARG1, ARG2) \
1057 def_fn_type (ENUM, RETURN, 0, 2, ARG1, ARG2);
1058 #define DEF_FUNCTION_TYPE_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
1059 def_fn_type (ENUM, RETURN, 0, 3, ARG1, ARG2, ARG3);
1060 #define DEF_FUNCTION_TYPE_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
1061 def_fn_type (ENUM, RETURN, 0, 4, ARG1, ARG2, ARG3, ARG4);
1062 #define DEF_FUNCTION_TYPE_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
1063 def_fn_type (ENUM, RETURN, 0, 5, ARG1, ARG2, ARG3, ARG4, ARG5);
1064 #define DEF_FUNCTION_TYPE_6(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
1066 def_fn_type (ENUM, RETURN, 0, 6, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6);
1067 #define DEF_FUNCTION_TYPE_7(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
1069 def_fn_type (ENUM, RETURN, 0, 7, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7);
1070 #define DEF_FUNCTION_TYPE_8(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
1072 def_fn_type (ENUM, RETURN, 0, 8, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, \
1074 #define DEF_FUNCTION_TYPE_9(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
1075 ARG6, ARG7, ARG8, ARG9) \
1076 def_fn_type (ENUM, RETURN, 0, 9, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, \
1078 #define DEF_FUNCTION_TYPE_10(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
1079 ARG6, ARG7, ARG8, ARG9, ARG10) \
1080 def_fn_type (ENUM, RETURN, 0, 10, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, \
1081 ARG7, ARG8, ARG9, ARG10);
1082 #define DEF_FUNCTION_TYPE_11(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
1083 ARG6, ARG7, ARG8, ARG9, ARG10, ARG11) \
1084 def_fn_type (ENUM, RETURN, 0, 11, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, \
1085 ARG7, ARG8, ARG9, ARG10, ARG11);
1086 #define DEF_FUNCTION_TYPE_VAR_0(ENUM, RETURN) \
1087 def_fn_type (ENUM, RETURN, 1, 0);
1088 #define DEF_FUNCTION_TYPE_VAR_1(ENUM, RETURN, ARG1) \
1089 def_fn_type (ENUM, RETURN, 1, 1, ARG1);
1090 #define DEF_FUNCTION_TYPE_VAR_2(ENUM, RETURN, ARG1, ARG2) \
1091 def_fn_type (ENUM, RETURN, 1, 2, ARG1, ARG2);
1092 #define DEF_FUNCTION_TYPE_VAR_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
1093 def_fn_type (ENUM, RETURN, 1, 3, ARG1, ARG2, ARG3);
1094 #define DEF_FUNCTION_TYPE_VAR_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
1095 def_fn_type (ENUM, RETURN, 1, 4, ARG1, ARG2, ARG3, ARG4);
1096 #define DEF_FUNCTION_TYPE_VAR_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
1097 def_fn_type (ENUM, RETURN, 1, 5, ARG1, ARG2, ARG3, ARG4, ARG5);
1098 #define DEF_FUNCTION_TYPE_VAR_6(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
1100 def_fn_type (ENUM, RETURN, 1, 6, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6);
1101 #define DEF_FUNCTION_TYPE_VAR_7(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
1103 def_fn_type (ENUM, RETURN, 1, 7, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7);
1104 #define DEF_FUNCTION_TYPE_VAR_11(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
1105 ARG6, ARG7, ARG8, ARG9, ARG10, ARG11) \
1106 def_fn_type (ENUM, RETURN, 1, 11, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, \
1107 ARG7, ARG8, ARG9, ARG10, ARG11);
1108 #define DEF_POINTER_TYPE(ENUM, TYPE) \
1109 builtin_types[(int) ENUM] = build_pointer_type (builtin_types[(int) TYPE]);
1111 #include "builtin-types.def"
1113 #undef DEF_PRIMITIVE_TYPE
1114 #undef DEF_FUNCTION_TYPE_1
1115 #undef DEF_FUNCTION_TYPE_2
1116 #undef DEF_FUNCTION_TYPE_3
1117 #undef DEF_FUNCTION_TYPE_4
1118 #undef DEF_FUNCTION_TYPE_5
1119 #undef DEF_FUNCTION_TYPE_6
1120 #undef DEF_FUNCTION_TYPE_7
1121 #undef DEF_FUNCTION_TYPE_8
1122 #undef DEF_FUNCTION_TYPE_9
1123 #undef DEF_FUNCTION_TYPE_10
1124 #undef DEF_FUNCTION_TYPE_11
1125 #undef DEF_FUNCTION_TYPE_VAR_0
1126 #undef DEF_FUNCTION_TYPE_VAR_1
1127 #undef DEF_FUNCTION_TYPE_VAR_2
1128 #undef DEF_FUNCTION_TYPE_VAR_3
1129 #undef DEF_FUNCTION_TYPE_VAR_4
1130 #undef DEF_FUNCTION_TYPE_VAR_5
1131 #undef DEF_FUNCTION_TYPE_VAR_6
1132 #undef DEF_FUNCTION_TYPE_VAR_7
1133 #undef DEF_FUNCTION_TYPE_VAR_11
1134 #undef DEF_POINTER_TYPE
1135 builtin_types
[(int) BT_LAST
] = NULL_TREE
;
1137 d_init_attributes ();
1139 #define DEF_BUILTIN(ENUM, NAME, CLASS, TYPE, LIBTYPE, BOTH_P, FALLBACK_P, \
1140 NONANSI_P, ATTRS, IMPLICIT, COND) \
1142 do_build_builtin_fn (ENUM, NAME, CLASS, \
1143 builtin_types[(int) TYPE], \
1144 BOTH_P, FALLBACK_P, \
1145 built_in_attributes[(int) ATTRS], IMPLICIT);
1146 #include "builtins.def"
1150 /* Build builtin functions and types for the D language frontend. */
1153 d_init_builtins (void)
1155 /* Build the "standard" abi va_list. */
1156 Type::tvalist
= build_frontend_type (va_list_type_node
);
1158 sorry ("cannot represent built-in %<va_list%> type in D");
1160 /* Map the va_list type to the D frontend Type. This is to prevent both
1161 errors in gimplification or an ICE in targetm.canonical_va_list_type. */
1162 Type::tvalist
->ctype
= va_list_type_node
;
1163 TYPE_LANG_SPECIFIC (va_list_type_node
) = build_lang_type (Type::tvalist
);
1165 d_build_c_type_nodes ();
1166 d_build_d_type_nodes ();
1168 if (TREE_CODE (va_list_type_node
) == ARRAY_TYPE
)
1170 /* It might seem natural to make the argument type a pointer, but there
1171 is no implicit casting from arrays to pointers in D. */
1172 d_define_builtins (va_list_type_node
, va_list_type_node
);
1176 d_define_builtins (build_reference_type (va_list_type_node
),
1180 targetm
.init_builtins ();
1181 build_common_builtin_nodes ();
1184 /* Registration of machine- or os-specific builtin types.
1185 Add to builtin types list for maybe processing later
1186 if `gcc.builtins' was imported into the current module. */
1189 d_register_builtin_type (tree type
, const char *name
)
1191 tree decl
= build_decl (UNKNOWN_LOCATION
, TYPE_DECL
,
1192 get_identifier (name
), type
);
1193 DECL_ARTIFICIAL (decl
) = 1;
1195 if (!TYPE_NAME (type
))
1196 TYPE_NAME (type
) = decl
;
1198 vec_safe_push (gcc_builtins_types
, decl
);
1201 /* Add DECL to builtin functions list for maybe processing later
1202 if `gcc.builtins' was imported into the current module. */
1205 d_builtin_function (tree decl
)
1207 if (!flag_no_builtin
&& DECL_ASSEMBLER_NAME_SET_P (decl
))
1208 vec_safe_push (gcc_builtins_libfuncs
, decl
);
1210 vec_safe_push (gcc_builtins_functions
, decl
);
1215 #include "gt-d-d-builtins.h"