diff options
Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/genattr.c')
| -rw-r--r-- | gcc-4.2.1-5666.3/gcc/genattr.c | 284 |
1 files changed, 0 insertions, 284 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/genattr.c b/gcc-4.2.1-5666.3/gcc/genattr.c deleted file mode 100644 index 83fb5e88f..000000000 --- a/gcc-4.2.1-5666.3/gcc/genattr.c +++ /dev/null @@ -1,284 +0,0 @@ -/* Generate attribute information (insn-attr.h) from machine description. - Copyright (C) 1991, 1994, 1996, 1998, 1999, 2000, 2003, 2004 - Free Software Foundation, Inc. - Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu) - -This file is part of GCC. - -GCC 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 2, or (at your option) any later -version. - -GCC 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 GCC; see the file COPYING. If not, write to the Free -Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301, USA. */ - - -#include "bconfig.h" -#include "system.h" -#include "coretypes.h" -#include "tm.h" -#include "rtl.h" -#include "errors.h" -#include "gensupport.h" - - -static void write_upcase (const char *); -static void gen_attr (rtx); - -static void -write_upcase (const char *str) -{ - for (; *str; str++) - putchar (TOUPPER(*str)); -} - -static void -gen_attr (rtx attr) -{ - const char *p, *tag; - int is_const = GET_CODE (XEXP (attr, 2)) == CONST; - - printf ("#define HAVE_ATTR_%s\n", XSTR (attr, 0)); - - /* If numeric attribute, don't need to write an enum. */ - p = XSTR (attr, 1); - if (*p == '\0') - printf ("extern int get_attr_%s (%s);\n", XSTR (attr, 0), - (is_const ? "void" : "rtx")); - else - { - printf ("enum attr_%s {", XSTR (attr, 0)); - - while ((tag = scan_comma_elt (&p)) != 0) - { - write_upcase (XSTR (attr, 0)); - putchar ('_'); - while (tag != p) - putchar (TOUPPER (*tag++)); - if (*p == ',') - fputs (", ", stdout); - } - - fputs ("};\n", stdout); - printf ("extern enum attr_%s get_attr_%s (%s);\n\n", - XSTR (attr, 0), XSTR (attr, 0), (is_const ? "void" : "rtx")); - } - - /* If `length' attribute, write additional function definitions and define - variables used by `insn_current_length'. */ - if (! strcmp (XSTR (attr, 0), "length")) - { - puts ("\ -extern void shorten_branches (rtx);\n\ -extern int insn_default_length (rtx);\n\ -extern int insn_min_length (rtx);\n\ -extern int insn_variable_length_p (rtx);\n\ -extern int insn_current_length (rtx);\n\n\ -#include \"insn-addr.h\"\n"); - } -} - -int -main (int argc, char **argv) -{ - rtx desc; - int have_delay = 0; - int have_annul_true = 0; - int have_annul_false = 0; - int num_insn_reservations = 0; - int i; - - progname = "genattr"; - - if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE) - return (FATAL_EXIT_CODE); - - puts ("/* Generated automatically by the program `genattr'"); - puts (" from the machine description file `md'. */\n"); - puts ("#ifndef GCC_INSN_ATTR_H"); - puts ("#define GCC_INSN_ATTR_H\n"); - - /* For compatibility, define the attribute `alternative', which is just - a reference to the variable `which_alternative'. */ - - puts ("#define HAVE_ATTR_alternative"); - puts ("#define get_attr_alternative(insn) which_alternative"); - - /* Read the machine description. */ - - while (1) - { - int line_no, insn_code_number; - - desc = read_md_rtx (&line_no, &insn_code_number); - if (desc == NULL) - break; - - if (GET_CODE (desc) == DEFINE_ATTR) - gen_attr (desc); - - else if (GET_CODE (desc) == DEFINE_DELAY) - { - if (! have_delay) - { - printf ("#define DELAY_SLOTS\n"); - printf ("extern int num_delay_slots (rtx);\n"); - printf ("extern int eligible_for_delay (rtx, int, rtx, int);\n\n"); - printf ("extern int const_num_delay_slots (rtx);\n\n"); - have_delay = 1; - } - - for (i = 0; i < XVECLEN (desc, 1); i += 3) - { - if (XVECEXP (desc, 1, i + 1) && ! have_annul_true) - { - printf ("#define ANNUL_IFTRUE_SLOTS\n"); - printf ("extern int eligible_for_annul_true (rtx, int, rtx, int);\n"); - have_annul_true = 1; - } - - if (XVECEXP (desc, 1, i + 2) && ! have_annul_false) - { - printf ("#define ANNUL_IFFALSE_SLOTS\n"); - printf ("extern int eligible_for_annul_false (rtx, int, rtx, int);\n"); - have_annul_false = 1; - } - } - } - - else if (GET_CODE (desc) == DEFINE_INSN_RESERVATION) - num_insn_reservations++; - } - - if (num_insn_reservations > 0) - { - /* Output interface for pipeline hazards recognition based on - DFA (deterministic finite state automata. */ - printf ("\n#define INSN_SCHEDULING\n"); - printf ("\n/* DFA based pipeline interface. */"); - printf ("\n#ifndef AUTOMATON_ALTS\n"); - printf ("#define AUTOMATON_ALTS 0\n"); - printf ("#endif\n\n"); - printf ("\n#ifndef AUTOMATON_STATE_ALTS\n"); - printf ("#define AUTOMATON_STATE_ALTS 0\n"); - printf ("#endif\n\n"); - printf ("#ifndef CPU_UNITS_QUERY\n"); - printf ("#define CPU_UNITS_QUERY 0\n"); - printf ("#endif\n\n"); - /* Interface itself: */ - printf ("/* Internal insn code number used by automata. */\n"); - printf ("extern int internal_dfa_insn_code (rtx);\n\n"); - printf ("/* Insn latency time defined in define_insn_reservation. */\n"); - printf ("extern int insn_default_latency (rtx);\n\n"); - printf ("/* Return nonzero if there is a bypass for given insn\n"); - printf (" which is a data producer. */\n"); - printf ("extern int bypass_p (rtx);\n\n"); - printf ("/* Insn latency time on data consumed by the 2nd insn.\n"); - printf (" Use the function if bypass_p returns nonzero for\n"); - printf (" the 1st insn. */\n"); - printf ("extern int insn_latency (rtx, rtx);\n\n"); - printf ("\n#if AUTOMATON_ALTS\n"); - printf ("/* The following function returns number of alternative\n"); - printf (" reservations of given insn. It may be used for better\n"); - printf (" insns scheduling heuristics. */\n"); - printf ("extern int insn_alts (rtx);\n\n"); - printf ("#endif\n\n"); - printf ("/* Maximal possible number of insns waiting results being\n"); - printf (" produced by insns whose execution is not finished. */\n"); - printf ("extern const int max_insn_queue_index;\n\n"); - printf ("/* Pointer to data describing current state of DFA. */\n"); - printf ("typedef void *state_t;\n\n"); - printf ("/* Size of the data in bytes. */\n"); - printf ("extern int state_size (void);\n\n"); - printf ("/* Initiate given DFA state, i.e. Set up the state\n"); - printf (" as all functional units were not reserved. */\n"); - printf ("extern void state_reset (state_t);\n"); - printf ("/* The following function returns negative value if given\n"); - printf (" insn can be issued in processor state described by given\n"); - printf (" DFA state. In this case, the DFA state is changed to\n"); - printf (" reflect the current and future reservations by given\n"); - printf (" insn. Otherwise the function returns minimal time\n"); - printf (" delay to issue the insn. This delay may be zero\n"); - printf (" for superscalar or VLIW processors. If the second\n"); - printf (" parameter is NULL the function changes given DFA state\n"); - printf (" as new processor cycle started. */\n"); - printf ("extern int state_transition (state_t, rtx);\n"); - printf ("\n#if AUTOMATON_STATE_ALTS\n"); - printf ("/* The following function returns number of possible\n"); - printf (" alternative reservations of given insn in given\n"); - printf (" DFA state. It may be used for better insns scheduling\n"); - printf (" heuristics. By default the function is defined if\n"); - printf (" macro AUTOMATON_STATE_ALTS is defined because its\n"); - printf (" implementation may require much memory. */\n"); - printf ("extern int state_alts (state_t, rtx);\n"); - printf ("#endif\n\n"); - printf ("extern int min_issue_delay (state_t, rtx);\n"); - printf ("/* The following function returns nonzero if no one insn\n"); - printf (" can be issued in current DFA state. */\n"); - printf ("extern int state_dead_lock_p (state_t);\n"); - printf ("/* The function returns minimal delay of issue of the 2nd\n"); - printf (" insn after issuing the 1st insn in given DFA state.\n"); - printf (" The 1st insn should be issued in given state (i.e.\n"); - printf (" state_transition should return negative value for\n"); - printf (" the insn and the state). Data dependencies between\n"); - printf (" the insns are ignored by the function. */\n"); - printf - ("extern int min_insn_conflict_delay (state_t, rtx, rtx);\n"); - printf ("/* The following function outputs reservations for given\n"); - printf (" insn as they are described in the corresponding\n"); - printf (" define_insn_reservation. */\n"); - printf ("extern void print_reservation (FILE *, rtx);\n"); - printf ("\n#if CPU_UNITS_QUERY\n"); - printf ("/* The following function returns code of functional unit\n"); - printf (" with given name (see define_cpu_unit). */\n"); - printf ("extern int get_cpu_unit_code (const char *);\n"); - printf ("/* The following function returns nonzero if functional\n"); - printf (" unit with given code is currently reserved in given\n"); - printf (" DFA state. */\n"); - printf ("extern int cpu_unit_reservation_p (state_t, int);\n"); - printf ("#endif\n\n"); - printf ("/* Clean insn code cache. It should be called if there\n"); - printf (" is a chance that condition value in a\n"); - printf (" define_insn_reservation will be changed after\n"); - printf (" last call of dfa_start. */\n"); - printf ("extern void dfa_clean_insn_cache (void);\n\n"); - printf ("extern void dfa_clear_single_insn_cache (rtx);\n\n"); - printf ("/* Initiate and finish work with DFA. They should be\n"); - printf (" called as the first and the last interface\n"); - printf (" functions. */\n"); - printf ("extern void dfa_start (void);\n"); - printf ("extern void dfa_finish (void);\n"); - } - else - { - /* Otherwise we do no scheduling, but we need these typedefs - in order to avoid uglifying other code with more ifdefs. */ - printf ("typedef void *state_t;\n\n"); - } - - /* Output flag masks for use by reorg. - - Flags are used to hold branch direction and prediction information - for use by eligible_for_... */ - printf("\n#define ATTR_FLAG_forward\t0x1\n"); - printf("#define ATTR_FLAG_backward\t0x2\n"); - printf("#define ATTR_FLAG_likely\t0x4\n"); - printf("#define ATTR_FLAG_very_likely\t0x8\n"); - printf("#define ATTR_FLAG_unlikely\t0x10\n"); - printf("#define ATTR_FLAG_very_unlikely\t0x20\n"); - - puts("\n#endif /* GCC_INSN_ATTR_H */"); - - if (ferror (stdout) || fflush (stdout) || fclose (stdout)) - return FATAL_EXIT_CODE; - - return SUCCESS_EXIT_CODE; -} |