X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fgenattr.c;h=34e710d429d3f50a24cad568fd08ad8ee6570217;hb=7b54e46d42d74e741f3fdbf670a2a48d33572cbd;hp=41ff649f8f43ad7868c56e7cdc592a4edf7c0aab;hpb=a62ddad6b3e6a2e32ea091ec83a211a007468fd5;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/genattr.c b/gcc/genattr.c index 41ff649f8f4..34e710d429d 100644 --- a/gcc/genattr.c +++ b/gcc/genattr.c @@ -1,13 +1,13 @@ /* Generate attribute information (insn-attr.h) from machine description. - Copyright (C) 1991, 1994, 1996, 1998, 1999, 2000, 2003, 2004 - Free Software Foundation, Inc. + Copyright (C) 1991, 1994, 1996, 1998, 1999, 2000, 2003, 2004, 2007, 2008, + 2010, 2011 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 +Software Foundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY @@ -16,9 +16,8 @@ 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, 59 Temple Place - Suite 330, Boston, MA -02111-1307, USA. */ +along with GCC; see the file COPYING3. If not see +. */ #include "bconfig.h" @@ -27,89 +26,39 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA #include "tm.h" #include "rtl.h" #include "errors.h" +#include "read-md.h" #include "gensupport.h" -/* A range of values. */ - -struct range -{ - int min; - int max; -}; - -/* Record information about each function unit mentioned in a - DEFINE_FUNCTION_UNIT. */ - -struct function_unit -{ - char *name; /* Function unit name. */ - struct function_unit *next; /* Next function unit. */ - int multiplicity; /* Number of units of this type. */ - int simultaneity; /* Maximum number of simultaneous insns - on this function unit or 0 if unlimited. */ - struct range ready_cost; /* Range of ready cost values. */ - struct range issue_delay; /* Range of issue delay values. */ -}; - -static void extend_range (struct range *, int, int); -static void init_range (struct range *); -static void write_upcase (const char *); static void gen_attr (rtx); -static void write_units (int, struct range *, struct range *, - struct range *, struct range *, - struct range *); -static void -extend_range (struct range *range, int min, int max) -{ - if (range->min > min) range->min = min; - if (range->max < max) range->max = max; -} -static void -init_range (struct range *range) -{ - range->min = 100000; - range->max = -1; -} +static VEC (rtx, heap) *const_attrs, *reservations; -static void -write_upcase (const char *str) -{ - for (; *str; str++) - putchar (TOUPPER(*str)); -} static void gen_attr (rtx attr) { - const char *p, *tag; + const char *p; int is_const = GET_CODE (XEXP (attr, 2)) == CONST; + if (is_const) + VEC_safe_push (rtx, heap, const_attrs, attr); + 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")); + if (GET_CODE (attr) == DEFINE_ENUM_ATTR) + printf ("extern enum %s get_attr_%s (%s);\n\n", + XSTR (attr, 1), 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")); + p = XSTR (attr, 1); + if (*p == '\0') + printf ("extern int get_attr_%s (%s);\n", XSTR (attr, 0), + (is_const ? "void" : "rtx")); + else + 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 @@ -119,57 +68,73 @@ gen_attr (rtx attr) 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"); } } -static void -write_units (int num_units, struct range *multiplicity, struct range *simultaneity, - struct range *ready_cost, struct range *issue_delay, - struct range *blockage) +/* Check that attribute NAME is used in define_insn_reservation condition + EXP. Return true if it is. */ +static bool +check_tune_attr (const char *name, rtx exp) { - int i, q_size; - - printf ("#define INSN_SCHEDULING\n\n"); - printf ("extern int result_ready_cost (rtx);\n"); - printf ("extern int function_units_used (rtx);\n\n"); - printf ("extern const struct function_unit_desc\n"); - printf ("{\n"); - printf (" const char *const name;\n"); - printf (" const int bitmask;\n"); - printf (" const int multiplicity;\n"); - printf (" const int simultaneity;\n"); - printf (" const int default_cost;\n"); - printf (" const int max_issue_delay;\n"); - printf (" int (*const ready_cost_function) (rtx);\n"); - printf (" int (*const conflict_cost_function) (rtx, rtx);\n"); - printf (" const int max_blockage;\n"); - printf (" unsigned int (*const blockage_range_function) (rtx);\n"); - printf (" int (*const blockage_function) (rtx, rtx);\n"); - printf ("} function_units[];\n\n"); - printf ("#define FUNCTION_UNITS_SIZE %d\n", num_units); - printf ("#define MIN_MULTIPLICITY %d\n", multiplicity->min); - printf ("#define MAX_MULTIPLICITY %d\n", multiplicity->max); - printf ("#define MIN_SIMULTANEITY %d\n", simultaneity->min); - printf ("#define MAX_SIMULTANEITY %d\n", simultaneity->max); - printf ("#define MIN_READY_COST %d\n", ready_cost->min); - printf ("#define MAX_READY_COST %d\n", ready_cost->max); - printf ("#define MIN_ISSUE_DELAY %d\n", issue_delay->min); - printf ("#define MAX_ISSUE_DELAY %d\n", issue_delay->max); - printf ("#define MIN_BLOCKAGE %d\n", blockage->min); - printf ("#define MAX_BLOCKAGE %d\n", blockage->max); - for (i = 0; (1 << i) < blockage->max; i++) - ; - printf ("#define BLOCKAGE_BITS %d\n", i + 1); - - /* INSN_QUEUE_SIZE is a power of two larger than MAX_BLOCKAGE and - MAX_READY_COST. This is the longest time an insn may be queued. */ - i = MAX (blockage->max, ready_cost->max); - for (q_size = 1; q_size <= i; q_size <<= 1) - ; - printf ("#define INSN_QUEUE_SIZE %d\n", q_size); + switch (GET_CODE (exp)) + { + case AND: + if (check_tune_attr (name, XEXP (exp, 0))) + return true; + return check_tune_attr (name, XEXP (exp, 1)); + + case IOR: + return (check_tune_attr (name, XEXP (exp, 0)) + && check_tune_attr (name, XEXP (exp, 1))); + + case EQ_ATTR: + return strcmp (XSTR (exp, 0), name) == 0; + + default: + return false; + } +} + +/* Try to find a const attribute (usually cpu or tune) that is used + in all define_insn_reservation conditions. */ +static bool +find_tune_attr (rtx exp) +{ + unsigned int i; + rtx attr; + + switch (GET_CODE (exp)) + { + case AND: + case IOR: + if (find_tune_attr (XEXP (exp, 0))) + return true; + return find_tune_attr (XEXP (exp, 1)); + + case EQ_ATTR: + if (strcmp (XSTR (exp, 0), "alternative") == 0) + return false; + + FOR_EACH_VEC_ELT (rtx, const_attrs, i, attr) + if (strcmp (XSTR (attr, 0), XSTR (exp, 0)) == 0) + { + unsigned int j; + rtx resv; + + FOR_EACH_VEC_ELT (rtx, reservations, j, resv) + if (! check_tune_attr (XSTR (attr, 0), XEXP (resv, 2))) + return false; + return true; + } + return false; + + default: + return false; + } } int @@ -180,24 +145,11 @@ main (int argc, char **argv) int have_annul_true = 0; int have_annul_false = 0; int num_insn_reservations = 0; - int num_units = 0; - struct range all_simultaneity, all_multiplicity; - struct range all_ready_cost, all_issue_delay, all_blockage; - struct function_unit *units = 0, *unit; int i; - init_range (&all_multiplicity); - init_range (&all_simultaneity); - init_range (&all_ready_cost); - init_range (&all_issue_delay); - init_range (&all_blockage); - progname = "genattr"; - if (argc <= 1) - fatal ("no input file name"); - - if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE) + if (!init_rtx_reader_args (argc, argv)) return (FATAL_EXIT_CODE); puts ("/* Generated automatically by the program `genattr'"); @@ -205,6 +157,8 @@ main (int argc, char **argv) puts ("#ifndef GCC_INSN_ATTR_H"); puts ("#define GCC_INSN_ATTR_H\n"); + puts ("#include \"insn-attr-common.h\"\n"); + /* For compatibility, define the attribute `alternative', which is just a reference to the variable `which_alternative'. */ @@ -221,14 +175,14 @@ main (int argc, char **argv) if (desc == NULL) break; - if (GET_CODE (desc) == DEFINE_ATTR) + if (GET_CODE (desc) == DEFINE_ATTR + || GET_CODE (desc) == DEFINE_ENUM_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"); @@ -253,90 +207,17 @@ main (int argc, char **argv) } } - else if (GET_CODE (desc) == DEFINE_FUNCTION_UNIT) + else if (GET_CODE (desc) == DEFINE_INSN_RESERVATION) { - const char *name = XSTR (desc, 0); - int multiplicity = XINT (desc, 1); - int simultaneity = XINT (desc, 2); - int ready_cost = MAX (XINT (desc, 4), 1); - int issue_delay = MAX (XINT (desc, 5), 1); - int issueexp_p = (XVEC (desc, 6) != 0); - - for (unit = units; unit; unit = unit->next) - if (strcmp (unit->name, name) == 0) - break; - - if (unit == 0) - { - unit = xmalloc (sizeof (struct function_unit)); - unit->name = xstrdup (name); - unit->multiplicity = multiplicity; - unit->simultaneity = simultaneity; - unit->ready_cost.min = unit->ready_cost.max = ready_cost; - unit->issue_delay.min = unit->issue_delay.max = issue_delay; - unit->next = units; - units = unit; - num_units++; - - extend_range (&all_multiplicity, multiplicity, multiplicity); - extend_range (&all_simultaneity, simultaneity, simultaneity); - } - else if (unit->multiplicity != multiplicity - || unit->simultaneity != simultaneity) - fatal ("Differing specifications given for `%s' function unit", - unit->name); - - extend_range (&unit->ready_cost, ready_cost, ready_cost); - extend_range (&unit->issue_delay, - issueexp_p ? 1 : issue_delay, issue_delay); - extend_range (&all_ready_cost, - unit->ready_cost.min, unit->ready_cost.max); - extend_range (&all_issue_delay, - unit->issue_delay.min, unit->issue_delay.max); + num_insn_reservations++; + VEC_safe_push (rtx, heap, reservations, desc); } - else if (GET_CODE (desc) == DEFINE_INSN_RESERVATION) - num_insn_reservations++; } - if (num_units > 0 || num_insn_reservations > 0) + if (num_insn_reservations > 0) { - /* Compute the range of blockage cost values. See genattrtab.c - for the derivation. BLOCKAGE (E,C) when SIMULTANEITY is zero is - - MAX (ISSUE-DELAY (E,C), - READY-COST (E) - (READY-COST (C) - 1)) - - and otherwise - - MAX (ISSUE-DELAY (E,C), - READY-COST (E) - (READY-COST (C) - 1), - READY-COST (E) - FILL-TIME) */ - - for (unit = units; unit; unit = unit->next) - { - struct range blockage; - - blockage = unit->issue_delay; - blockage.max = MAX (unit->ready_cost.max - - (unit->ready_cost.min - 1), - blockage.max); - blockage.min = MAX (1, blockage.min); - - if (unit->simultaneity != 0) - { - int fill_time = ((unit->simultaneity - 1) - * unit->issue_delay.min); - blockage.min = MAX (unit->ready_cost.min - fill_time, - blockage.min); - blockage.max = MAX (unit->ready_cost.max - fill_time, - blockage.max); - } - extend_range (&all_blockage, blockage.min, blockage.max); - } - - write_units (num_units, &all_multiplicity, &all_simultaneity, - &all_ready_cost, &all_issue_delay, &all_blockage); - + bool has_tune_attr + = find_tune_attr (XEXP (VEC_index (rtx, reservations, 0), 2)); /* Output interface for pipeline hazards recognition based on DFA (deterministic finite state automata. */ printf ("\n/* DFA based pipeline interface. */"); @@ -350,15 +231,24 @@ main (int argc, char **argv) printf ("#define CPU_UNITS_QUERY 0\n"); printf ("#endif\n\n"); /* Interface itself: */ - printf ("extern int max_dfa_issue_rate;\n\n"); - printf ("/* The following macro value is calculated from the\n"); - printf (" automaton based pipeline description and is equal to\n"); - printf (" maximal number of all insns described in constructions\n"); - printf (" `define_insn_reservation' which can be issued on the\n"); - printf (" same processor cycle. */\n"); - printf ("#define MAX_DFA_ISSUE_RATE max_dfa_issue_rate\n\n"); - printf ("/* Insn latency time defined in define_insn_reservation. */\n"); - printf ("extern int insn_default_latency (rtx);\n\n"); + if (has_tune_attr) + { + printf ("/* Initialize fn pointers for internal_dfa_insn_code\n"); + printf (" and insn_default_latency. */\n"); + printf ("extern void init_sched_attrs (void);\n\n"); + 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"); + } + else + { + printf ("#define init_sched_attrs() do { } while (0)\n\n"); + 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"); @@ -366,6 +256,10 @@ main (int argc, char **argv) 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 ("/* Maximal insn latency time possible of all bypasses for this insn.\n"); + printf (" Use the function if bypass_p returns nonzero for\n"); + printf (" the 1st insn. */\n"); + printf ("extern int maximal_insn_latency (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"); @@ -374,7 +268,7 @@ main (int argc, char **argv) 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 int max_insn_queue_index;\n\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"); @@ -426,11 +320,15 @@ main (int argc, char **argv) printf (" DFA state. */\n"); printf ("extern int cpu_unit_reservation_p (state_t, int);\n"); printf ("#endif\n\n"); + printf ("/* The following function returns true if insn\n"); + printf (" has a dfa reservation. */\n"); + printf ("extern bool insn_has_dfa_reservation_p (rtx);\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"); @@ -462,10 +360,3 @@ main (int argc, char **argv) return SUCCESS_EXIT_CODE; } - -/* Define this so we can link with print-rtl.o to get debug_rtx function. */ -const char * -get_insn_name (int code ATTRIBUTE_UNUSED) -{ - return NULL; -}