/* 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 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
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. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#include "bconfig.h"
#include "tm.h"
#include "rtl.h"
#include "errors.h"
+#include "read-md.h"
#include "gensupport.h"
putchar (TOUPPER(*str));
}
+static VEC (rtx, heap) *const_attrs, *reservations;
+
+
static void
gen_attr (rtx attr)
{
const char *p, *tag;
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)
+ p = XSTR (attr, 1);
+ if (*p == '\0')
+ printf ("extern int get_attr_%s (%s);\n", XSTR (attr, 0),
+ (is_const ? "void" : "rtx"));
+ else
{
- write_upcase (XSTR (attr, 0));
- putchar ('_');
- while (tag != p)
- putchar (TOUPPER (*tag++));
- if (*p == ',')
- fputs (", ", stdout);
- }
+ 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);
- fputs ("};\n", stdout);
- printf ("extern enum attr_%s get_attr_%s (%s);\n\n",
- XSTR (attr, 0), XSTR (attr, 0), (is_const ? "void" : "rtx"));
+ 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
}
}
+/* 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)
+{
+ 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
main (int argc, char **argv)
{
progname = "genattr";
- 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'");
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)
}
else if (GET_CODE (desc) == DEFINE_INSN_RESERVATION)
- num_insn_reservations++;
+ {
+ num_insn_reservations++;
+ VEC_safe_push (rtx, heap, reservations, desc);
+ }
}
if (num_insn_reservations > 0)
{
+ 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#define INSN_SCHEDULING\n");
printf ("#define CPU_UNITS_QUERY 0\n");
printf ("#endif\n\n");
/* Interface itself: */
- 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");
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");
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");
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