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Diffstat (limited to 'lib/gcc/arm-eabi/4.6.x-google/plugin/include/target.h')
| -rw-r--r-- | lib/gcc/arm-eabi/4.6.x-google/plugin/include/target.h | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/lib/gcc/arm-eabi/4.6.x-google/plugin/include/target.h b/lib/gcc/arm-eabi/4.6.x-google/plugin/include/target.h new file mode 100644 index 0000000..eaf7aad --- /dev/null +++ b/lib/gcc/arm-eabi/4.6.x-google/plugin/include/target.h @@ -0,0 +1,182 @@ +/* Data structure definitions for a generic GCC target. + Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 + Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by the + Free Software Foundation; either version 3, or (at your option) any + later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; see the file COPYING3. If not see + <http://www.gnu.org/licenses/>. + + In other words, you are welcome to use, share and improve this program. + You are forbidden to forbid anyone else to use, share and improve + what you give them. Help stamp out software-hoarding! */ + + +/* This file contains a data structure that describes a GCC target. + At present it is incomplete, but in future it should grow to + contain most or all target machine and target O/S specific + information. + + This structure has its initializer declared in target-def.h in the + form of large macro TARGET_INITIALIZER that expands to many smaller + macros. + + The smaller macros each initialize one component of the structure, + and each has a default. Each target should have a file that + includes target.h and target-def.h, and overrides any inappropriate + defaults by undefining the relevant macro and defining a suitable + replacement. That file should then contain the definition of + "targetm" like so: + + struct gcc_target targetm = TARGET_INITIALIZER; + + Doing things this way allows us to bring together everything that + defines a GCC target. By supplying a default that is appropriate + to most targets, we can easily add new items without needing to + edit dozens of target configuration files. It should also allow us + to gradually reduce the amount of conditional compilation that is + scattered throughout GCC. */ + +#ifndef GCC_TARGET_H +#define GCC_TARGET_H + +#include "tm.h" +#include "insn-modes.h" + +/* Types used by the record_gcc_switches() target function. */ +typedef enum +{ + SWITCH_TYPE_PASSED, /* A switch passed on the command line. */ + SWITCH_TYPE_ENABLED, /* An option that is currently enabled. */ + SWITCH_TYPE_DESCRIPTIVE, /* Descriptive text, not a switch or option. */ + SWITCH_TYPE_LINE_START, /* Please emit any necessary text at the start of a line. */ + SWITCH_TYPE_LINE_END /* Please emit a line terminator. */ +} +print_switch_type; + +typedef int (* print_switch_fn_type) (print_switch_type, const char *); + +/* An example implementation for ELF targets. Defined in varasm.c */ +extern int elf_record_gcc_switches (print_switch_type type, const char *); + +/* Some places still assume that all pointer or address modes are the + standard Pmode and ptr_mode. These optimizations become invalid if + the target actually supports multiple different modes. For now, + we disable such optimizations on such targets, using this function. */ +extern bool target_default_pointer_address_modes_p (void); + +struct stdarg_info; +struct spec_info_def; + +/* The struct used by the secondary_reload target hook. */ +typedef struct secondary_reload_info +{ + /* icode is actually an enum insn_code, but we don't want to force every + file that includes target.h to include optabs.h . */ + int icode; + int extra_cost; /* Cost for using (a) scratch register(s) to be taken + into account by copy_cost. */ + /* The next two members are for the use of the backward + compatibility hook. */ + struct secondary_reload_info *prev_sri; + int t_icode; /* Actually an enum insn_code - see above. */ +} secondary_reload_info; + +/* This is defined in sched-int.h . */ +struct _dep; + +/* This is defined in ddg.h . */ +struct ddg; + +/* This is defined in cfgloop.h . */ +struct loop; + +/* This is defined in tree-ssa-alias.h. */ +struct ao_ref_s; + +/* Assembler instructions for creating various kinds of integer object. */ + +struct asm_int_op +{ + const char *hi; + const char *si; + const char *di; + const char *ti; +}; + +/* Types of costs for vectorizer cost model. */ +enum vect_cost_for_stmt +{ + scalar_stmt, + scalar_load, + scalar_store, + vector_stmt, + vector_load, + unaligned_load, + unaligned_store, + vector_store, + vec_to_scalar, + scalar_to_vec, + cond_branch_not_taken, + cond_branch_taken, + vec_perm +}; + +/* Sets of optimization levels at which an option may be enabled by + default_options_optimization. */ +enum opt_levels +{ + OPT_LEVELS_NONE, /* No levels (mark end of array). */ + OPT_LEVELS_ALL, /* All levels (used by targets to disable options + enabled in target-independent code). */ + OPT_LEVELS_0_ONLY, /* -O0 only. */ + OPT_LEVELS_1_PLUS, /* -O1 and above, including -Os. */ + OPT_LEVELS_1_PLUS_SPEED_ONLY, /* -O1 and above, but not -Os. */ + OPT_LEVELS_2_PLUS, /* -O2 and above, including -Os. */ + OPT_LEVELS_2_PLUS_SPEED_ONLY, /* -O2 and above, but not -Os. */ + OPT_LEVELS_3_PLUS, /* -O3 and above. */ + OPT_LEVELS_3_PLUS_AND_SIZE, /* -O3 and above and -Os. */ + OPT_LEVELS_SIZE, /* -Os only. */ + OPT_LEVELS_FAST /* -Ofast only. */ +}; + +/* Description of options to enable by default at given levels. */ +struct default_options +{ + /* The levels at which to enable the option. */ + enum opt_levels levels; + + /* The option index and argument or enabled/disabled sense of the + option, as passed to handle_generated_option. If ARG is NULL and + the option allows a negative form, the option is considered to be + passed in negative form when the optimization level is not one of + those in LEVELS (in order to handle changes to the optimization + level with the "optimize" attribute). */ + size_t opt_index; + const char *arg; + int value; +}; + +/* The target structure. This holds all the backend hooks. */ +#define DEFHOOKPOD(NAME, DOC, TYPE, INIT) TYPE NAME; +#define DEFHOOK(NAME, DOC, TYPE, PARAMS, INIT) TYPE (* NAME) PARAMS; +#define DEFHOOK_UNDOC DEFHOOK +#define HOOKSTRUCT(FRAGMENT) FRAGMENT + +#include "target.def" + +extern struct gcc_target targetm; + +/* Each target can provide their own. */ +extern struct gcc_targetcm targetcm; + +#endif /* GCC_TARGET_H */ |