1 /* Language-dependent hooks for LTO.
2 Copyright 2009, 2010 Free Software Foundation, Inc.
3 Contributed by CodeSourcery, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 3, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
23 #include "coretypes.h"
28 #include "langhooks.h"
29 #include "langhooks-def.h"
33 #include "tree-inline.h"
35 #include "diagnostic-core.h"
37 #include "lto-streamer.h"
39 static tree handle_noreturn_attribute (tree *, tree, tree, int, bool *);
40 static tree handle_leaf_attribute (tree *, tree, tree, int, bool *);
41 static tree handle_const_attribute (tree *, tree, tree, int, bool *);
42 static tree handle_malloc_attribute (tree *, tree, tree, int, bool *);
43 static tree handle_pure_attribute (tree *, tree, tree, int, bool *);
44 static tree handle_novops_attribute (tree *, tree, tree, int, bool *);
45 static tree handle_nonnull_attribute (tree *, tree, tree, int, bool *);
46 static tree handle_nothrow_attribute (tree *, tree, tree, int, bool *);
47 static tree handle_sentinel_attribute (tree *, tree, tree, int, bool *);
48 static tree handle_type_generic_attribute (tree *, tree, tree, int, bool *);
49 static tree handle_format_attribute (tree *, tree, tree, int, bool *);
50 static tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
52 /* Table of machine-independent attributes supported in GIMPLE. */
53 const struct attribute_spec lto_attribute_table[] =
55 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler,
57 { "noreturn", 0, 0, true, false, false,
58 handle_noreturn_attribute, false },
59 { "leaf", 0, 0, true, false, false,
60 handle_leaf_attribute, false },
61 /* The same comments as for noreturn attributes apply to const ones. */
62 { "const", 0, 0, true, false, false,
63 handle_const_attribute, false },
64 { "malloc", 0, 0, true, false, false,
65 handle_malloc_attribute, false },
66 { "pure", 0, 0, true, false, false,
67 handle_pure_attribute, false },
68 { "no vops", 0, 0, true, false, false,
69 handle_novops_attribute, false },
70 { "nonnull", 0, -1, false, true, true,
71 handle_nonnull_attribute, false },
72 { "nothrow", 0, 0, true, false, false,
73 handle_nothrow_attribute, false },
74 { "sentinel", 0, 1, false, true, true,
75 handle_sentinel_attribute, false },
76 { "type generic", 0, 0, false, true, true,
77 handle_type_generic_attribute, false },
78 { NULL, 0, 0, false, false, false, NULL, false }
81 /* Give the specifications for the format attributes, used by C and all
84 const struct attribute_spec lto_format_attribute_table[] =
86 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler,
87 affects_type_identity } */
88 { "format", 3, 3, false, true, true,
89 handle_format_attribute, false },
90 { "format_arg", 1, 1, false, true, true,
91 handle_format_arg_attribute, false },
92 { NULL, 0, 0, false, false, false, NULL, false }
95 enum built_in_attribute
97 #define DEF_ATTR_NULL_TREE(ENUM) ENUM,
98 #define DEF_ATTR_INT(ENUM, VALUE) ENUM,
99 #define DEF_ATTR_IDENT(ENUM, STRING) ENUM,
100 #define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) ENUM,
101 #include "builtin-attrs.def"
102 #undef DEF_ATTR_NULL_TREE
104 #undef DEF_ATTR_IDENT
105 #undef DEF_ATTR_TREE_LIST
109 static GTY(()) tree built_in_attributes[(int) ATTR_LAST];
113 enum lto_builtin_type
115 #define DEF_PRIMITIVE_TYPE(NAME, VALUE) NAME,
116 #define DEF_FUNCTION_TYPE_0(NAME, RETURN) NAME,
117 #define DEF_FUNCTION_TYPE_1(NAME, RETURN, ARG1) NAME,
118 #define DEF_FUNCTION_TYPE_2(NAME, RETURN, ARG1, ARG2) NAME,
119 #define DEF_FUNCTION_TYPE_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
120 #define DEF_FUNCTION_TYPE_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME,
121 #define DEF_FUNCTION_TYPE_5(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) NAME,
122 #define DEF_FUNCTION_TYPE_6(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6) NAME,
123 #define DEF_FUNCTION_TYPE_7(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7) NAME,
124 #define DEF_FUNCTION_TYPE_VAR_0(NAME, RETURN) NAME,
125 #define DEF_FUNCTION_TYPE_VAR_1(NAME, RETURN, ARG1) NAME,
126 #define DEF_FUNCTION_TYPE_VAR_2(NAME, RETURN, ARG1, ARG2) NAME,
127 #define DEF_FUNCTION_TYPE_VAR_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
128 #define DEF_FUNCTION_TYPE_VAR_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME,
129 #define DEF_FUNCTION_TYPE_VAR_5(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG6) \
131 #define DEF_POINTER_TYPE(NAME, TYPE) NAME,
132 #include "builtin-types.def"
133 #undef DEF_PRIMITIVE_TYPE
134 #undef DEF_FUNCTION_TYPE_0
135 #undef DEF_FUNCTION_TYPE_1
136 #undef DEF_FUNCTION_TYPE_2
137 #undef DEF_FUNCTION_TYPE_3
138 #undef DEF_FUNCTION_TYPE_4
139 #undef DEF_FUNCTION_TYPE_5
140 #undef DEF_FUNCTION_TYPE_6
141 #undef DEF_FUNCTION_TYPE_7
142 #undef DEF_FUNCTION_TYPE_VAR_0
143 #undef DEF_FUNCTION_TYPE_VAR_1
144 #undef DEF_FUNCTION_TYPE_VAR_2
145 #undef DEF_FUNCTION_TYPE_VAR_3
146 #undef DEF_FUNCTION_TYPE_VAR_4
147 #undef DEF_FUNCTION_TYPE_VAR_5
148 #undef DEF_POINTER_TYPE
152 typedef enum lto_builtin_type builtin_type;
154 static GTY(()) tree builtin_types[(int) BT_LAST + 1];
156 static GTY(()) tree string_type_node;
157 static GTY(()) tree const_string_type_node;
158 static GTY(()) tree wint_type_node;
159 static GTY(()) tree intmax_type_node;
160 static GTY(()) tree uintmax_type_node;
161 static GTY(()) tree signed_size_type_node;
163 /* Flags needed to process builtins.def. */
167 /* Attribute handlers. */
169 /* Handle a "noreturn" attribute; arguments as in
170 struct attribute_spec.handler. */
173 handle_noreturn_attribute (tree *node, tree ARG_UNUSED (name),
174 tree ARG_UNUSED (args), int ARG_UNUSED (flags),
175 bool * ARG_UNUSED (no_add_attrs))
177 tree type = TREE_TYPE (*node);
179 if (TREE_CODE (*node) == FUNCTION_DECL)
180 TREE_THIS_VOLATILE (*node) = 1;
181 else if (TREE_CODE (type) == POINTER_TYPE
182 && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE)
185 (build_type_variant (TREE_TYPE (type),
186 TYPE_READONLY (TREE_TYPE (type)), 1));
193 /* Handle a "leaf" attribute; arguments as in
194 struct attribute_spec.handler. */
197 handle_leaf_attribute (tree *node, tree name,
198 tree ARG_UNUSED (args),
199 int ARG_UNUSED (flags), bool *no_add_attrs)
201 if (TREE_CODE (*node) != FUNCTION_DECL)
203 warning (OPT_Wattributes, "%qE attribute ignored", name);
204 *no_add_attrs = true;
206 if (!TREE_PUBLIC (*node))
208 warning (OPT_Wattributes, "%qE attribute has no effect on unit local functions", name);
209 *no_add_attrs = true;
215 /* Handle a "const" attribute; arguments as in
216 struct attribute_spec.handler. */
219 handle_const_attribute (tree *node, tree ARG_UNUSED (name),
220 tree ARG_UNUSED (args), int ARG_UNUSED (flags),
221 bool * ARG_UNUSED (no_add_attrs))
223 tree type = TREE_TYPE (*node);
225 /* See FIXME comment on noreturn in c_common_attribute_table. */
226 if (TREE_CODE (*node) == FUNCTION_DECL)
227 TREE_READONLY (*node) = 1;
228 else if (TREE_CODE (type) == POINTER_TYPE
229 && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE)
232 (build_type_variant (TREE_TYPE (type), 1,
233 TREE_THIS_VOLATILE (TREE_TYPE (type))));
241 /* Handle a "malloc" attribute; arguments as in
242 struct attribute_spec.handler. */
245 handle_malloc_attribute (tree *node, tree ARG_UNUSED (name),
246 tree ARG_UNUSED (args), int ARG_UNUSED (flags),
247 bool * ARG_UNUSED (no_add_attrs))
249 if (TREE_CODE (*node) == FUNCTION_DECL
250 && POINTER_TYPE_P (TREE_TYPE (TREE_TYPE (*node))))
251 DECL_IS_MALLOC (*node) = 1;
259 /* Handle a "pure" attribute; arguments as in
260 struct attribute_spec.handler. */
263 handle_pure_attribute (tree *node, tree ARG_UNUSED (name),
264 tree ARG_UNUSED (args), int ARG_UNUSED (flags),
265 bool * ARG_UNUSED (no_add_attrs))
267 if (TREE_CODE (*node) == FUNCTION_DECL)
268 DECL_PURE_P (*node) = 1;
276 /* Handle a "no vops" attribute; arguments as in
277 struct attribute_spec.handler. */
280 handle_novops_attribute (tree *node, tree ARG_UNUSED (name),
281 tree ARG_UNUSED (args), int ARG_UNUSED (flags),
282 bool *ARG_UNUSED (no_add_attrs))
284 gcc_assert (TREE_CODE (*node) == FUNCTION_DECL);
285 DECL_IS_NOVOPS (*node) = 1;
290 /* Helper for nonnull attribute handling; fetch the operand number
291 from the attribute argument list. */
294 get_nonnull_operand (tree arg_num_expr, unsigned HOST_WIDE_INT *valp)
296 /* Verify the arg number is a constant. */
297 if (TREE_CODE (arg_num_expr) != INTEGER_CST
298 || TREE_INT_CST_HIGH (arg_num_expr) != 0)
301 *valp = TREE_INT_CST_LOW (arg_num_expr);
305 /* Handle the "nonnull" attribute. */
308 handle_nonnull_attribute (tree *node, tree ARG_UNUSED (name),
309 tree args, int ARG_UNUSED (flags),
310 bool * ARG_UNUSED (no_add_attrs))
314 /* If no arguments are specified, all pointer arguments should be
315 non-null. Verify a full prototype is given so that the arguments
316 will have the correct types when we actually check them later. */
319 gcc_assert (prototype_p (type));
323 /* Argument list specified. Verify that each argument number references
324 a pointer argument. */
325 for (; args; args = TREE_CHAIN (args))
328 unsigned HOST_WIDE_INT arg_num = 0, ck_num;
330 if (!get_nonnull_operand (TREE_VALUE (args), &arg_num))
333 argument = TYPE_ARG_TYPES (type);
336 for (ck_num = 1; ; ck_num++)
338 if (!argument || ck_num == arg_num)
340 argument = TREE_CHAIN (argument);
344 && TREE_CODE (TREE_VALUE (argument)) == POINTER_TYPE);
352 /* Handle a "nothrow" attribute; arguments as in
353 struct attribute_spec.handler. */
356 handle_nothrow_attribute (tree *node, tree ARG_UNUSED (name),
357 tree ARG_UNUSED (args), int ARG_UNUSED (flags),
358 bool * ARG_UNUSED (no_add_attrs))
360 if (TREE_CODE (*node) == FUNCTION_DECL)
361 TREE_NOTHROW (*node) = 1;
369 /* Handle a "sentinel" attribute. */
372 handle_sentinel_attribute (tree *node, tree ARG_UNUSED (name), tree args,
373 int ARG_UNUSED (flags),
374 bool * ARG_UNUSED (no_add_attrs))
376 tree params = TYPE_ARG_TYPES (*node);
379 while (TREE_CHAIN (params))
380 params = TREE_CHAIN (params);
382 gcc_assert (!VOID_TYPE_P (TREE_VALUE (params)));
386 tree position = TREE_VALUE (args);
387 gcc_assert (TREE_CODE (position) == INTEGER_CST);
388 if (tree_int_cst_lt (position, integer_zero_node))
395 /* Handle a "type_generic" attribute. */
398 handle_type_generic_attribute (tree *node, tree ARG_UNUSED (name),
399 tree ARG_UNUSED (args), int ARG_UNUSED (flags),
400 bool * ARG_UNUSED (no_add_attrs))
404 /* Ensure we have a function type. */
405 gcc_assert (TREE_CODE (*node) == FUNCTION_TYPE);
407 params = TYPE_ARG_TYPES (*node);
408 while (params && ! VOID_TYPE_P (TREE_VALUE (params)))
409 params = TREE_CHAIN (params);
411 /* Ensure we have a variadic function. */
412 gcc_assert (!params);
417 /* Handle a "format" attribute; arguments as in
418 struct attribute_spec.handler. */
421 handle_format_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name),
422 tree ARG_UNUSED (args), int ARG_UNUSED (flags),
425 *no_add_attrs = true;
430 /* Handle a "format_arg" attribute; arguments as in
431 struct attribute_spec.handler. */
434 handle_format_arg_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name),
435 tree ARG_UNUSED (args), int ARG_UNUSED (flags),
438 *no_add_attrs = true;
443 /* Cribbed from c-common.c. */
446 def_fn_type (builtin_type def, builtin_type ret, bool var, int n, ...)
453 for (i = 0; i < n; ++i)
455 builtin_type a = (builtin_type) va_arg (list, int);
456 t = builtin_types[a];
457 if (t == error_mark_node)
459 args = tree_cons (NULL_TREE, t, args);
463 args = nreverse (args);
465 args = chainon (args, void_list_node);
467 t = builtin_types[ret];
468 if (t == error_mark_node)
470 t = build_function_type (t, args);
473 builtin_types[def] = t;
477 /* Used to help initialize the builtin-types.def table. When a type of
478 the correct size doesn't exist, use error_mark_node instead of NULL.
479 The later results in segfaults even when a decl using the type doesn't
483 builtin_type_for_size (int size, bool unsignedp)
485 tree type = lang_hooks.types.type_for_size (size, unsignedp);
486 return type ? type : error_mark_node;
489 /* Support for DEF_BUILTIN. */
492 def_builtin_1 (enum built_in_function fncode, const char *name,
493 enum built_in_class fnclass, tree fntype, tree libtype,
494 bool both_p, bool fallback_p, bool nonansi_p,
495 tree fnattrs, bool implicit_p)
500 if (fntype == error_mark_node)
503 libname = name + strlen ("__builtin_");
504 decl = add_builtin_function (name, fntype, fncode, fnclass,
505 (fallback_p ? libname : NULL),
510 && !(nonansi_p && flag_no_nonansi_builtin))
511 add_builtin_function (libname, libtype, fncode, fnclass,
514 built_in_decls[(int) fncode] = decl;
516 implicit_built_in_decls[(int) fncode] = decl;
520 /* Initialize the attribute table for all the supported builtins. */
523 lto_init_attributes (void)
525 /* Fill in the built_in_attributes array. */
526 #define DEF_ATTR_NULL_TREE(ENUM) \
527 built_in_attributes[(int) ENUM] = NULL_TREE;
528 #define DEF_ATTR_INT(ENUM, VALUE) \
529 built_in_attributes[(int) ENUM] = build_int_cst (NULL_TREE, VALUE);
530 #define DEF_ATTR_IDENT(ENUM, STRING) \
531 built_in_attributes[(int) ENUM] = get_identifier (STRING);
532 #define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) \
533 built_in_attributes[(int) ENUM] \
534 = tree_cons (built_in_attributes[(int) PURPOSE], \
535 built_in_attributes[(int) VALUE], \
536 built_in_attributes[(int) CHAIN]);
537 #include "builtin-attrs.def"
538 #undef DEF_ATTR_NULL_TREE
540 #undef DEF_ATTR_IDENT
541 #undef DEF_ATTR_TREE_LIST
544 /* Create builtin types and functions. VA_LIST_REF_TYPE_NODE and
545 VA_LIST_ARG_TYPE_NODE are used in builtin-types.def. */
548 lto_define_builtins (tree va_list_ref_type_node ATTRIBUTE_UNUSED,
549 tree va_list_arg_type_node ATTRIBUTE_UNUSED)
551 #define DEF_PRIMITIVE_TYPE(ENUM, VALUE) \
552 builtin_types[ENUM] = VALUE;
553 #define DEF_FUNCTION_TYPE_0(ENUM, RETURN) \
554 def_fn_type (ENUM, RETURN, 0, 0);
555 #define DEF_FUNCTION_TYPE_1(ENUM, RETURN, ARG1) \
556 def_fn_type (ENUM, RETURN, 0, 1, ARG1);
557 #define DEF_FUNCTION_TYPE_2(ENUM, RETURN, ARG1, ARG2) \
558 def_fn_type (ENUM, RETURN, 0, 2, ARG1, ARG2);
559 #define DEF_FUNCTION_TYPE_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
560 def_fn_type (ENUM, RETURN, 0, 3, ARG1, ARG2, ARG3);
561 #define DEF_FUNCTION_TYPE_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
562 def_fn_type (ENUM, RETURN, 0, 4, ARG1, ARG2, ARG3, ARG4);
563 #define DEF_FUNCTION_TYPE_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
564 def_fn_type (ENUM, RETURN, 0, 5, ARG1, ARG2, ARG3, ARG4, ARG5);
565 #define DEF_FUNCTION_TYPE_6(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
567 def_fn_type (ENUM, RETURN, 0, 6, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6);
568 #define DEF_FUNCTION_TYPE_7(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
570 def_fn_type (ENUM, RETURN, 0, 7, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7);
571 #define DEF_FUNCTION_TYPE_VAR_0(ENUM, RETURN) \
572 def_fn_type (ENUM, RETURN, 1, 0);
573 #define DEF_FUNCTION_TYPE_VAR_1(ENUM, RETURN, ARG1) \
574 def_fn_type (ENUM, RETURN, 1, 1, ARG1);
575 #define DEF_FUNCTION_TYPE_VAR_2(ENUM, RETURN, ARG1, ARG2) \
576 def_fn_type (ENUM, RETURN, 1, 2, ARG1, ARG2);
577 #define DEF_FUNCTION_TYPE_VAR_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
578 def_fn_type (ENUM, RETURN, 1, 3, ARG1, ARG2, ARG3);
579 #define DEF_FUNCTION_TYPE_VAR_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
580 def_fn_type (ENUM, RETURN, 1, 4, ARG1, ARG2, ARG3, ARG4);
581 #define DEF_FUNCTION_TYPE_VAR_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
582 def_fn_type (ENUM, RETURN, 1, 5, ARG1, ARG2, ARG3, ARG4, ARG5);
583 #define DEF_POINTER_TYPE(ENUM, TYPE) \
584 builtin_types[(int) ENUM] = build_pointer_type (builtin_types[(int) TYPE]);
586 #include "builtin-types.def"
588 #undef DEF_PRIMITIVE_TYPE
589 #undef DEF_FUNCTION_TYPE_1
590 #undef DEF_FUNCTION_TYPE_2
591 #undef DEF_FUNCTION_TYPE_3
592 #undef DEF_FUNCTION_TYPE_4
593 #undef DEF_FUNCTION_TYPE_5
594 #undef DEF_FUNCTION_TYPE_6
595 #undef DEF_FUNCTION_TYPE_VAR_0
596 #undef DEF_FUNCTION_TYPE_VAR_1
597 #undef DEF_FUNCTION_TYPE_VAR_2
598 #undef DEF_FUNCTION_TYPE_VAR_3
599 #undef DEF_FUNCTION_TYPE_VAR_4
600 #undef DEF_FUNCTION_TYPE_VAR_5
601 #undef DEF_POINTER_TYPE
602 builtin_types[(int) BT_LAST] = NULL_TREE;
604 lto_init_attributes ();
606 #define DEF_BUILTIN(ENUM, NAME, CLASS, TYPE, LIBTYPE, BOTH_P, FALLBACK_P,\
607 NONANSI_P, ATTRS, IMPLICIT, COND) \
609 def_builtin_1 (ENUM, NAME, CLASS, builtin_types[(int) TYPE], \
610 builtin_types[(int) LIBTYPE], BOTH_P, FALLBACK_P, \
611 NONANSI_P, built_in_attributes[(int) ATTRS], IMPLICIT);
612 #include "builtins.def"
616 static GTY(()) tree registered_builtin_types;
618 /* Language hooks. */
621 lto_option_lang_mask (void)
627 lto_complain_wrong_lang_p (const struct cl_option *option ATTRIBUTE_UNUSED)
629 /* The LTO front end inherits all the options from the first front
630 end that was used. However, not all the original front end
631 options make sense in LTO.
633 A real solution would be to filter this in collect2, but collect2
634 does not have access to all the option attributes to know what to
635 filter. So, in lto1 we silently accept inherited flags and do
641 lto_init_options_struct (struct gcc_options *opts)
643 /* By default, C99-like requirements for complex multiply and divide.
644 ??? Until the complex method is encoded in the IL this is the only
645 safe choice. This will pessimize Fortran code with LTO unless
646 people specify a complex method manually or use -ffast-math. */
647 opts->x_flag_complex_method = 2;
650 /* Handle command-line option SCODE. If the option takes an argument, it is
651 stored in ARG, which is otherwise NULL. VALUE holds either a numerical
652 argument or a binary value indicating whether the positive or negative form
653 of the option was supplied. */
655 const char *resolution_file_name;
657 lto_handle_option (size_t scode, const char *arg,
658 int value ATTRIBUTE_UNUSED, int kind ATTRIBUTE_UNUSED,
659 location_t loc ATTRIBUTE_UNUSED,
660 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED)
662 enum opt_code code = (enum opt_code) scode;
667 case OPT_fresolution_:
668 resolution_file_name = arg;
682 /* Perform post-option processing. Does additional initialization based on
683 command-line options. PFILENAME is the main input filename. Returns false
684 to enable subsequent back-end initialization. */
687 lto_post_options (const char **pfilename ATTRIBUTE_UNUSED)
689 /* -fltrans and -fwpa are mutually exclusive. Check for that here. */
690 if (flag_wpa && flag_ltrans)
691 error ("-fwpa and -fltrans are mutually exclusive");
695 flag_generate_lto = 0;
697 /* During LTRANS, we are not looking at the whole program, only
698 a subset of the whole callgraph. */
699 flag_whole_program = 0;
703 flag_generate_lto = 1;
705 /* Excess precision other than "fast" requires front-end
707 flag_excess_precision_cmdline = EXCESS_PRECISION_FAST;
709 lto_read_all_file_options ();
711 /* Initialize the compiler back end. */
715 /* Return an integer type with PRECISION bits of precision,
716 that is unsigned if UNSIGNEDP is nonzero, otherwise signed. */
719 lto_type_for_size (unsigned precision, int unsignedp)
721 if (precision == TYPE_PRECISION (integer_type_node))
722 return unsignedp ? unsigned_type_node : integer_type_node;
724 if (precision == TYPE_PRECISION (signed_char_type_node))
725 return unsignedp ? unsigned_char_type_node : signed_char_type_node;
727 if (precision == TYPE_PRECISION (short_integer_type_node))
728 return unsignedp ? short_unsigned_type_node : short_integer_type_node;
730 if (precision == TYPE_PRECISION (long_integer_type_node))
731 return unsignedp ? long_unsigned_type_node : long_integer_type_node;
733 if (precision == TYPE_PRECISION (long_long_integer_type_node))
735 ? long_long_unsigned_type_node
736 : long_long_integer_type_node;
738 if (precision <= TYPE_PRECISION (intQI_type_node))
739 return unsignedp ? unsigned_intQI_type_node : intQI_type_node;
741 if (precision <= TYPE_PRECISION (intHI_type_node))
742 return unsignedp ? unsigned_intHI_type_node : intHI_type_node;
744 if (precision <= TYPE_PRECISION (intSI_type_node))
745 return unsignedp ? unsigned_intSI_type_node : intSI_type_node;
747 if (precision <= TYPE_PRECISION (intDI_type_node))
748 return unsignedp ? unsigned_intDI_type_node : intDI_type_node;
750 if (precision <= TYPE_PRECISION (intTI_type_node))
751 return unsignedp ? unsigned_intTI_type_node : intTI_type_node;
757 /* Return a data type that has machine mode MODE.
758 If the mode is an integer,
759 then UNSIGNEDP selects between signed and unsigned types.
760 If the mode is a fixed-point mode,
761 then UNSIGNEDP selects between saturating and nonsaturating types. */
764 lto_type_for_mode (enum machine_mode mode, int unsigned_p)
768 if (mode == TYPE_MODE (integer_type_node))
769 return unsigned_p ? unsigned_type_node : integer_type_node;
771 if (mode == TYPE_MODE (signed_char_type_node))
772 return unsigned_p ? unsigned_char_type_node : signed_char_type_node;
774 if (mode == TYPE_MODE (short_integer_type_node))
775 return unsigned_p ? short_unsigned_type_node : short_integer_type_node;
777 if (mode == TYPE_MODE (long_integer_type_node))
778 return unsigned_p ? long_unsigned_type_node : long_integer_type_node;
780 if (mode == TYPE_MODE (long_long_integer_type_node))
781 return unsigned_p ? long_long_unsigned_type_node : long_long_integer_type_node;
784 return unsigned_p ? unsigned_intQI_type_node : intQI_type_node;
787 return unsigned_p ? unsigned_intHI_type_node : intHI_type_node;
790 return unsigned_p ? unsigned_intSI_type_node : intSI_type_node;
793 return unsigned_p ? unsigned_intDI_type_node : intDI_type_node;
795 #if HOST_BITS_PER_WIDE_INT >= 64
796 if (mode == TYPE_MODE (intTI_type_node))
797 return unsigned_p ? unsigned_intTI_type_node : intTI_type_node;
800 if (mode == TYPE_MODE (float_type_node))
801 return float_type_node;
803 if (mode == TYPE_MODE (double_type_node))
804 return double_type_node;
806 if (mode == TYPE_MODE (long_double_type_node))
807 return long_double_type_node;
809 if (mode == TYPE_MODE (void_type_node))
810 return void_type_node;
812 if (mode == TYPE_MODE (build_pointer_type (char_type_node)))
814 ? make_unsigned_type (GET_MODE_PRECISION (mode))
815 : make_signed_type (GET_MODE_PRECISION (mode)));
817 if (mode == TYPE_MODE (build_pointer_type (integer_type_node)))
819 ? make_unsigned_type (GET_MODE_PRECISION (mode))
820 : make_signed_type (GET_MODE_PRECISION (mode)));
822 if (COMPLEX_MODE_P (mode))
824 enum machine_mode inner_mode;
827 if (mode == TYPE_MODE (complex_float_type_node))
828 return complex_float_type_node;
829 if (mode == TYPE_MODE (complex_double_type_node))
830 return complex_double_type_node;
831 if (mode == TYPE_MODE (complex_long_double_type_node))
832 return complex_long_double_type_node;
834 if (mode == TYPE_MODE (complex_integer_type_node) && !unsigned_p)
835 return complex_integer_type_node;
837 inner_mode = GET_MODE_INNER (mode);
838 inner_type = lto_type_for_mode (inner_mode, unsigned_p);
839 if (inner_type != NULL_TREE)
840 return build_complex_type (inner_type);
842 else if (VECTOR_MODE_P (mode))
844 enum machine_mode inner_mode = GET_MODE_INNER (mode);
845 tree inner_type = lto_type_for_mode (inner_mode, unsigned_p);
846 if (inner_type != NULL_TREE)
847 return build_vector_type_for_mode (inner_type, mode);
850 if (mode == TYPE_MODE (dfloat32_type_node))
851 return dfloat32_type_node;
852 if (mode == TYPE_MODE (dfloat64_type_node))
853 return dfloat64_type_node;
854 if (mode == TYPE_MODE (dfloat128_type_node))
855 return dfloat128_type_node;
857 if (ALL_SCALAR_FIXED_POINT_MODE_P (mode))
859 if (mode == TYPE_MODE (short_fract_type_node))
860 return unsigned_p ? sat_short_fract_type_node : short_fract_type_node;
861 if (mode == TYPE_MODE (fract_type_node))
862 return unsigned_p ? sat_fract_type_node : fract_type_node;
863 if (mode == TYPE_MODE (long_fract_type_node))
864 return unsigned_p ? sat_long_fract_type_node : long_fract_type_node;
865 if (mode == TYPE_MODE (long_long_fract_type_node))
866 return unsigned_p ? sat_long_long_fract_type_node
867 : long_long_fract_type_node;
869 if (mode == TYPE_MODE (unsigned_short_fract_type_node))
870 return unsigned_p ? sat_unsigned_short_fract_type_node
871 : unsigned_short_fract_type_node;
872 if (mode == TYPE_MODE (unsigned_fract_type_node))
873 return unsigned_p ? sat_unsigned_fract_type_node
874 : unsigned_fract_type_node;
875 if (mode == TYPE_MODE (unsigned_long_fract_type_node))
876 return unsigned_p ? sat_unsigned_long_fract_type_node
877 : unsigned_long_fract_type_node;
878 if (mode == TYPE_MODE (unsigned_long_long_fract_type_node))
879 return unsigned_p ? sat_unsigned_long_long_fract_type_node
880 : unsigned_long_long_fract_type_node;
882 if (mode == TYPE_MODE (short_accum_type_node))
883 return unsigned_p ? sat_short_accum_type_node : short_accum_type_node;
884 if (mode == TYPE_MODE (accum_type_node))
885 return unsigned_p ? sat_accum_type_node : accum_type_node;
886 if (mode == TYPE_MODE (long_accum_type_node))
887 return unsigned_p ? sat_long_accum_type_node : long_accum_type_node;
888 if (mode == TYPE_MODE (long_long_accum_type_node))
889 return unsigned_p ? sat_long_long_accum_type_node
890 : long_long_accum_type_node;
892 if (mode == TYPE_MODE (unsigned_short_accum_type_node))
893 return unsigned_p ? sat_unsigned_short_accum_type_node
894 : unsigned_short_accum_type_node;
895 if (mode == TYPE_MODE (unsigned_accum_type_node))
896 return unsigned_p ? sat_unsigned_accum_type_node
897 : unsigned_accum_type_node;
898 if (mode == TYPE_MODE (unsigned_long_accum_type_node))
899 return unsigned_p ? sat_unsigned_long_accum_type_node
900 : unsigned_long_accum_type_node;
901 if (mode == TYPE_MODE (unsigned_long_long_accum_type_node))
902 return unsigned_p ? sat_unsigned_long_long_accum_type_node
903 : unsigned_long_long_accum_type_node;
906 return unsigned_p ? sat_qq_type_node : qq_type_node;
908 return unsigned_p ? sat_hq_type_node : hq_type_node;
910 return unsigned_p ? sat_sq_type_node : sq_type_node;
912 return unsigned_p ? sat_dq_type_node : dq_type_node;
914 return unsigned_p ? sat_tq_type_node : tq_type_node;
917 return unsigned_p ? sat_uqq_type_node : uqq_type_node;
919 return unsigned_p ? sat_uhq_type_node : uhq_type_node;
921 return unsigned_p ? sat_usq_type_node : usq_type_node;
923 return unsigned_p ? sat_udq_type_node : udq_type_node;
925 return unsigned_p ? sat_utq_type_node : utq_type_node;
928 return unsigned_p ? sat_ha_type_node : ha_type_node;
930 return unsigned_p ? sat_sa_type_node : sa_type_node;
932 return unsigned_p ? sat_da_type_node : da_type_node;
934 return unsigned_p ? sat_ta_type_node : ta_type_node;
937 return unsigned_p ? sat_uha_type_node : uha_type_node;
939 return unsigned_p ? sat_usa_type_node : usa_type_node;
941 return unsigned_p ? sat_uda_type_node : uda_type_node;
943 return unsigned_p ? sat_uta_type_node : uta_type_node;
946 for (t = registered_builtin_types; t; t = TREE_CHAIN (t))
947 if (TYPE_MODE (TREE_VALUE (t)) == mode)
948 return TREE_VALUE (t);
954 lto_global_bindings_p (void)
960 lto_set_decl_assembler_name (tree decl)
962 /* This is almost the same as lhd_set_decl_assembler_name, except that
963 we need to uniquify file-scope names, even if they are not
964 TREE_PUBLIC, to avoid conflicts between individual files. */
967 if (TREE_PUBLIC (decl))
968 id = targetm.mangle_decl_assembler_name (decl, DECL_NAME (decl));
971 const char *name = IDENTIFIER_POINTER (DECL_NAME (decl));
974 ASM_FORMAT_PRIVATE_NAME (label, name, DECL_UID (decl));
975 id = get_identifier (label);
978 SET_DECL_ASSEMBLER_NAME (decl, id);
982 lto_pushdecl (tree t ATTRIBUTE_UNUSED)
984 /* Do nothing, since we get all information from DWARF and LTO
992 /* We have our own write_globals langhook, hence the getdecls
993 langhook shouldn't be used, except by dbxout.c, so we can't
999 lto_write_globals (void)
1001 tree *vec = VEC_address (tree, lto_global_var_decls);
1002 int len = VEC_length (tree, lto_global_var_decls);
1003 wrapup_global_declarations (vec, len);
1004 emit_debug_global_declarations (vec, len);
1005 VEC_free (tree, gc, lto_global_var_decls);
1009 lto_builtin_function (tree decl)
1015 lto_register_builtin_type (tree type, const char *name)
1019 decl = build_decl (UNKNOWN_LOCATION, TYPE_DECL, get_identifier (name), type);
1020 DECL_ARTIFICIAL (decl) = 1;
1021 if (!TYPE_NAME (type))
1022 TYPE_NAME (type) = decl;
1024 registered_builtin_types = tree_cons (0, type, registered_builtin_types);
1027 /* Build nodes that would have be created by the C front-end; necessary
1028 for including builtin-types.def and ultimately builtins.def. */
1031 lto_build_c_type_nodes (void)
1033 gcc_assert (void_type_node);
1035 void_list_node = build_tree_list (NULL_TREE, void_type_node);
1036 string_type_node = build_pointer_type (char_type_node);
1037 const_string_type_node
1038 = build_pointer_type (build_qualified_type (char_type_node, TYPE_QUAL_CONST));
1040 if (strcmp (SIZE_TYPE, "unsigned int") == 0)
1042 intmax_type_node = integer_type_node;
1043 uintmax_type_node = unsigned_type_node;
1044 signed_size_type_node = integer_type_node;
1046 else if (strcmp (SIZE_TYPE, "long unsigned int") == 0)
1048 intmax_type_node = long_integer_type_node;
1049 uintmax_type_node = long_unsigned_type_node;
1050 signed_size_type_node = long_integer_type_node;
1052 else if (strcmp (SIZE_TYPE, "long long unsigned int") == 0)
1054 intmax_type_node = long_long_integer_type_node;
1055 uintmax_type_node = long_long_unsigned_type_node;
1056 signed_size_type_node = long_long_integer_type_node;
1061 wint_type_node = unsigned_type_node;
1062 pid_type_node = integer_type_node;
1066 /* Perform LTO-specific initialization. */
1071 /* We need to generate LTO if running in WPA mode. */
1072 flag_generate_lto = flag_wpa;
1074 /* Initialize libcpp line maps for gcc_assert to work. */
1075 linemap_add (line_table, LC_RENAME, 0, NULL, 0);
1076 linemap_add (line_table, LC_RENAME, 0, NULL, 0);
1078 /* Create the basic integer types. */
1079 build_common_tree_nodes (flag_signed_char);
1081 /* Share char_type_node with whatever would be the default for the target.
1082 char_type_node will be used for internal types such as
1083 va_list_type_node but will not be present in the lto stream. */
1084 /* ??? This breaks the more common case of consistent but non-standard
1085 setting of flag_signed_char, so share according to flag_signed_char.
1088 = flag_signed_char ? signed_char_type_node : unsigned_char_type_node;
1090 /* Tell the middle end what type to use for the size of objects. */
1091 if (strcmp (SIZE_TYPE, "unsigned int") == 0)
1093 set_sizetype (unsigned_type_node);
1094 size_type_node = unsigned_type_node;
1096 else if (strcmp (SIZE_TYPE, "long unsigned int") == 0)
1098 set_sizetype (long_unsigned_type_node);
1099 size_type_node = long_unsigned_type_node;
1101 else if (strcmp (SIZE_TYPE, "long long unsigned int") == 0)
1103 set_sizetype (long_long_unsigned_type_node);
1104 size_type_node = long_long_unsigned_type_node;
1109 /* The global tree for the main identifier is filled in by
1110 language-specific front-end initialization that is not run in the
1111 LTO back-end. It appears that all languages that perform such
1112 initialization currently do so in the same way, so we do it here. */
1113 if (main_identifier_node == NULL_TREE)
1114 main_identifier_node = get_identifier ("main");
1116 /* In the C++ front-end, fileptr_type_node is defined as a variant
1117 copy of of ptr_type_node, rather than ptr_node itself. The
1118 distinction should only be relevant to the front-end, so we
1119 always use the C definition here in lto1. */
1120 gcc_assert (fileptr_type_node == ptr_type_node);
1122 ptrdiff_type_node = integer_type_node;
1124 /* Create other basic types. */
1125 build_common_tree_nodes_2 (/*short_double=*/false);
1126 lto_build_c_type_nodes ();
1127 gcc_assert (va_list_type_node);
1129 if (TREE_CODE (va_list_type_node) == ARRAY_TYPE)
1131 tree x = build_pointer_type (TREE_TYPE (va_list_type_node));
1132 lto_define_builtins (x, x);
1136 lto_define_builtins (va_list_type_node,
1137 build_reference_type (va_list_type_node));
1140 targetm.init_builtins ();
1141 build_common_builtin_nodes ();
1143 /* Assign names to the builtin types, otherwise they'll end up
1144 as __unknown__ in debug info.
1145 ??? We simply need to stop pre-seeding the streamer cache.
1146 Below is modeled after from c-common.c:c_common_nodes_and_builtins */
1147 #define NAME_TYPE(t,n) \
1149 TYPE_NAME (t) = build_decl (UNKNOWN_LOCATION, TYPE_DECL, \
1150 get_identifier (n), t)
1151 NAME_TYPE (integer_type_node, "int");
1152 NAME_TYPE (char_type_node, "char");
1153 NAME_TYPE (long_integer_type_node, "long int");
1154 NAME_TYPE (unsigned_type_node, "unsigned int");
1155 NAME_TYPE (long_unsigned_type_node, "long unsigned int");
1156 NAME_TYPE (long_long_integer_type_node, "long long int");
1157 NAME_TYPE (long_long_unsigned_type_node, "long long unsigned int");
1158 NAME_TYPE (short_integer_type_node, "short int");
1159 NAME_TYPE (short_unsigned_type_node, "short unsigned int");
1160 if (signed_char_type_node != char_type_node)
1161 NAME_TYPE (signed_char_type_node, "signed char");
1162 if (unsigned_char_type_node != char_type_node)
1163 NAME_TYPE (unsigned_char_type_node, "unsigned char");
1164 NAME_TYPE (float_type_node, "float");
1165 NAME_TYPE (double_type_node, "double");
1166 NAME_TYPE (long_double_type_node, "long double");
1167 NAME_TYPE (void_type_node, "void");
1168 NAME_TYPE (boolean_type_node, "bool");
1171 /* Initialize LTO-specific data structures. */
1172 lto_global_var_decls = VEC_alloc (tree, gc, 256);
1178 /* Initialize tree structures required by the LTO front end. */
1180 static void lto_init_ts (void)
1182 tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1;
1185 #undef LANG_HOOKS_NAME
1186 #define LANG_HOOKS_NAME "GNU GIMPLE"
1187 #undef LANG_HOOKS_OPTION_LANG_MASK
1188 #define LANG_HOOKS_OPTION_LANG_MASK lto_option_lang_mask
1189 #undef LANG_HOOKS_COMPLAIN_WRONG_LANG_P
1190 #define LANG_HOOKS_COMPLAIN_WRONG_LANG_P lto_complain_wrong_lang_p
1191 #undef LANG_HOOKS_INIT_OPTIONS_STRUCT
1192 #define LANG_HOOKS_INIT_OPTIONS_STRUCT lto_init_options_struct
1193 #undef LANG_HOOKS_HANDLE_OPTION
1194 #define LANG_HOOKS_HANDLE_OPTION lto_handle_option
1195 #undef LANG_HOOKS_POST_OPTIONS
1196 #define LANG_HOOKS_POST_OPTIONS lto_post_options
1197 #undef LANG_HOOKS_GET_ALIAS_SET
1198 #define LANG_HOOKS_GET_ALIAS_SET gimple_get_alias_set
1199 #undef LANG_HOOKS_TYPE_FOR_MODE
1200 #define LANG_HOOKS_TYPE_FOR_MODE lto_type_for_mode
1201 #undef LANG_HOOKS_TYPE_FOR_SIZE
1202 #define LANG_HOOKS_TYPE_FOR_SIZE lto_type_for_size
1203 #undef LANG_HOOKS_SET_DECL_ASSEMBLER_NAME
1204 #define LANG_HOOKS_SET_DECL_ASSEMBLER_NAME lto_set_decl_assembler_name
1205 #undef LANG_HOOKS_GLOBAL_BINDINGS_P
1206 #define LANG_HOOKS_GLOBAL_BINDINGS_P lto_global_bindings_p
1207 #undef LANG_HOOKS_PUSHDECL
1208 #define LANG_HOOKS_PUSHDECL lto_pushdecl
1209 #undef LANG_HOOKS_GETDECLS
1210 #define LANG_HOOKS_GETDECLS lto_getdecls
1211 #undef LANG_HOOKS_WRITE_GLOBALS
1212 #define LANG_HOOKS_WRITE_GLOBALS lto_write_globals
1213 #undef LANG_HOOKS_REGISTER_BUILTIN_TYPE
1214 #define LANG_HOOKS_REGISTER_BUILTIN_TYPE lto_register_builtin_type
1215 #undef LANG_HOOKS_BUILTIN_FUNCTION
1216 #define LANG_HOOKS_BUILTIN_FUNCTION lto_builtin_function
1217 #undef LANG_HOOKS_INIT
1218 #define LANG_HOOKS_INIT lto_init
1219 #undef LANG_HOOKS_PARSE_FILE
1220 #define LANG_HOOKS_PARSE_FILE lto_main
1221 #undef LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION
1222 #define LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION tree_rest_of_compilation
1223 #undef LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS
1224 #define LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS true
1225 #undef LANG_HOOKS_TYPES_COMPATIBLE_P
1226 #define LANG_HOOKS_TYPES_COMPATIBLE_P NULL
1227 #undef LANG_HOOKS_EH_PERSONALITY
1228 #define LANG_HOOKS_EH_PERSONALITY lto_eh_personality
1230 /* Attribute hooks. */
1231 #undef LANG_HOOKS_COMMON_ATTRIBUTE_TABLE
1232 #define LANG_HOOKS_COMMON_ATTRIBUTE_TABLE lto_attribute_table
1233 #undef LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE
1234 #define LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE lto_format_attribute_table
1236 #undef LANG_HOOKS_BEGIN_SECTION
1237 #define LANG_HOOKS_BEGIN_SECTION lto_obj_begin_section
1238 #undef LANG_HOOKS_APPEND_DATA
1239 #define LANG_HOOKS_APPEND_DATA lto_obj_append_data
1240 #undef LANG_HOOKS_END_SECTION
1241 #define LANG_HOOKS_END_SECTION lto_obj_end_section
1243 #undef LANG_HOOKS_INIT_TS
1244 #define LANG_HOOKS_INIT_TS lto_init_ts
1246 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
1248 /* Language hooks that are not part of lang_hooks. */
1251 convert (tree type ATTRIBUTE_UNUSED, tree expr ATTRIBUTE_UNUSED)
1256 /* Tree walking support. */
1258 static enum lto_tree_node_structure_enum
1259 lto_tree_node_structure (union lang_tree_node *t ATTRIBUTE_UNUSED)
1261 return TS_LTO_GENERIC;
1265 #include "gtype-lto.h"
1266 #include "gt-lto-lto-lang.h"