/* Generate attribute information (insn-attr.h) from machine description.
- Copyright (C) 1991, 1994, 1996, 1998, 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1991, 1994, 1996, 1998, 1999, 2000, 2003
+ Free Software Foundation, Inc.
Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
This file is part of GCC.
02111-1307, USA. */
-#include "hconfig.h"
+#include "bconfig.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include "rtl.h"
#include "errors.h"
#include "gensupport.h"
struct range issue_delay; /* Range of issue delay values. */
};
-static void extend_range PARAMS ((struct range *, int, int));
-static void init_range PARAMS ((struct range *));
-static void write_upcase PARAMS ((const char *));
-static void gen_attr PARAMS ((rtx));
-static void write_units PARAMS ((int, struct range *, struct range *,
- struct range *, struct range *,
- struct range *));
+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 (range, min, max)
- struct range *range;
- int min;
- int max;
+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 (range)
- struct range *range;
+init_range (struct range *range)
{
range->min = 100000;
range->max = -1;
}
static void
-write_upcase (str)
- const char *str;
+write_upcase (const char *str)
{
for (; *str; str++)
putchar (TOUPPER(*str));
}
static void
-gen_attr (attr)
- rtx attr;
+gen_attr (rtx attr)
{
- const char *p;
- int is_const = GET_CODE (XEXP (attr, 2)) == CONST;
+ 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. */
- if (*XSTR (attr, 1) == '\0')
- printf ("extern int get_attr_%s PARAMS ((%s));\n", XSTR (attr, 0),
+ 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));
- write_upcase (XSTR (attr, 0));
- printf ("_");
- for (p = XSTR (attr, 1); *p != '\0'; p++)
+ while ((tag = scan_comma_elt (&p)) != 0)
{
+ write_upcase (XSTR (attr, 0));
+ putchar ('_');
+ while (tag != p)
+ putchar (TOUPPER (*tag++));
if (*p == ',')
- {
- printf (", ");
- write_upcase (XSTR (attr, 0));
- printf ("_");
- }
- else
- putchar (TOUPPER(*p));
+ fputs (", ", stdout);
}
- printf ("};\n");
- printf ("extern enum attr_%s get_attr_%s PARAMS ((%s));\n\n",
+ fputs ("};\n", stdout);
+ printf ("extern enum attr_%s get_attr_%s (%s);\n\n",
XSTR (attr, 0), XSTR (attr, 0), (is_const ? "void" : "rtx"));
}
variables used by `insn_current_length'. */
if (! strcmp (XSTR (attr, 0), "length"))
{
- printf ("extern void shorten_branches PARAMS ((rtx));\n");
- printf ("extern int insn_default_length PARAMS ((rtx));\n");
- printf ("extern int insn_variable_length_p PARAMS ((rtx));\n");
- printf ("extern int insn_current_length PARAMS ((rtx));\n\n");
- printf ("#include \"insn-addr.h\"\n\n");
+ puts ("\
+extern void shorten_branches (rtx);\n\
+extern int insn_default_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 (num_units, multiplicity, simultaneity,
- ready_cost, issue_delay, blockage)
- int num_units;
- struct range *multiplicity;
- struct range *simultaneity;
- struct range *ready_cost;
- struct range *issue_delay;
- struct range *blockage;
+write_units (int num_units, struct range *multiplicity, struct range *simultaneity,
+ struct range *ready_cost, struct range *issue_delay,
+ struct range *blockage)
{
int i, q_size;
printf ("#define INSN_SCHEDULING\n\n");
- printf ("extern int result_ready_cost PARAMS ((rtx));\n");
- printf ("extern int function_units_used PARAMS ((rtx));\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 simultaneity;\n");
printf (" const int default_cost;\n");
printf (" const int max_issue_delay;\n");
- printf (" int (*const ready_cost_function) PARAMS ((rtx));\n");
- printf (" int (*const conflict_cost_function) PARAMS ((rtx, rtx));\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) PARAMS ((rtx));\n");
- printf (" int (*const blockage_function) PARAMS ((rtx, rtx));\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 INSN_QUEUE_SIZE %d\n", q_size);
}
-extern int main PARAMS ((int, char **));
-
int
-main (argc, argv)
- int argc;
- char **argv;
+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 num_units = 0;
struct range all_simultaneity, all_multiplicity;
struct range all_ready_cost, all_issue_delay, all_blockage;
puts ("#define HAVE_ATTR_alternative");
puts ("#define get_attr_alternative(insn) which_alternative");
-
+
/* Read the machine description. */
while (1)
if (! have_delay)
{
printf ("#define DELAY_SLOTS\n");
- printf ("extern int num_delay_slots PARAMS ((rtx));\n");
- printf ("extern int eligible_for_delay PARAMS ((rtx, int, rtx, int));\n\n");
- printf ("extern int const_num_delay_slots PARAMS ((rtx));\n\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;
}
if (XVECEXP (desc, 1, i + 1) && ! have_annul_true)
{
printf ("#define ANNUL_IFTRUE_SLOTS\n");
- printf ("extern int eligible_for_annul_true PARAMS ((rtx, int, rtx, int));\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 PARAMS ((rtx, int, rtx, int));\n");
+ printf ("extern int eligible_for_annul_false (rtx, int, rtx, int);\n");
have_annul_false = 1;
}
}
extend_range (&all_issue_delay,
unit->issue_delay.min, unit->issue_delay.max);
}
+ else if (GET_CODE (desc) == DEFINE_INSN_RESERVATION)
+ num_insn_reservations++;
}
- if (num_units > 0)
+ if (num_units > 0 || num_insn_reservations > 0)
{
+ if (num_units > 0)
+ printf ("#define TRADITIONAL_PIPELINE_INTERFACE 1\n");
+
+ if (num_insn_reservations > 0)
+ printf ("#define DFA_PIPELINE_INTERFACE 1\n");
+
/* Compute the range of blockage cost values. See genattrtab.c
for the derivation. BLOCKAGE (E,C) when SIMULTANEITY is zero is
write_units (num_units, &all_multiplicity, &all_simultaneity,
&all_ready_cost, &all_issue_delay, &all_blockage);
+
+ /* Output interface for pipeline hazards recognition based on
+ DFA (deterministic finite state automata. */
+ 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 ("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");
+ 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 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 ("/* 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.
+ /* Output flag masks for use by reorg.
Flags are used to hold branch direction and prediction information
for use by eligible_for_... */
/* Define this so we can link with print-rtl.o to get debug_rtx function. */
const char *
-get_insn_name (code)
- int code ATTRIBUTE_UNUSED;
+get_insn_name (int code ATTRIBUTE_UNUSED)
{
return NULL;
}
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