| /* Pipeline hazard description translator. |
| Copyright (C) 2000-2018 Free Software Foundation, Inc. |
| |
| Written by Vladimir Makarov <vmakarov@redhat.com> |
| |
| 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 3, 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 COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* References: |
| |
| 1. The finite state automaton based pipeline hazard recognizer and |
| instruction scheduler in GCC. V. Makarov. Proceedings of GCC |
| summit, 2003. |
| |
| 2. Detecting pipeline structural hazards quickly. T. Proebsting, |
| C. Fraser. Proceedings of ACM SIGPLAN-SIGACT Symposium on |
| Principles of Programming Languages, pages 280--286, 1994. |
| |
| This article is a good start point to understand usage of finite |
| state automata for pipeline hazard recognizers. But I'd |
| recommend the 1st and 3rd article for more deep understanding. |
| |
| 3. Efficient Instruction Scheduling Using Finite State Automata: |
| V. Bala and N. Rubin, Proceedings of MICRO-28. This is the best |
| article about usage of finite state automata for pipeline hazard |
| recognizers. |
| |
| The current implementation is described in the 1st article and it |
| is different from the 3rd article in the following: |
| |
| 1. New operator `|' (alternative) is permitted in functional unit |
| reservation which can be treated deterministically and |
| non-deterministically. |
| |
| 2. Possibility of usage of nondeterministic automata too. |
| |
| 3. Possibility to query functional unit reservations for given |
| automaton state. |
| |
| 4. Several constructions to describe impossible reservations |
| (`exclusion_set', `presence_set', `final_presence_set', |
| `absence_set', and `final_absence_set'). |
| |
| 5. No reverse automata are generated. Trace instruction scheduling |
| requires this. It can be easily added in the future if we |
| really need this. |
| |
| 6. Union of automaton states are not generated yet. It is planned |
| to be implemented. Such feature is needed to make more accurate |
| interlock insn scheduling to get state describing functional |
| unit reservation in a joint CFG point. */ |
| |
| /* This file code processes constructions of machine description file |
| which describes automaton used for recognition of processor pipeline |
| hazards by insn scheduler and can be used for other tasks (such as |
| VLIW insn packing. |
| |
| The translator functions `gen_cpu_unit', `gen_query_cpu_unit', |
| `gen_bypass', `gen_excl_set', `gen_presence_set', |
| `gen_final_presence_set', `gen_absence_set', |
| `gen_final_absence_set', `gen_automaton', `gen_automata_option', |
| `gen_reserv', `gen_insn_reserv' are called from file |
| `genattrtab.c'. They transform RTL constructions describing |
| automata in .md file into internal representation convenient for |
| further processing. |
| |
| The translator major function `expand_automata' processes the |
| description internal representation into finite state automaton. |
| It can be divided on: |
| |
| o checking correctness of the automaton pipeline description |
| (major function is `check_all_description'). |
| |
| o generating automaton (automata) from the description (major |
| function is `make_automaton'). |
| |
| o optional transformation of nondeterministic finite state |
| automata into deterministic ones if the alternative operator |
| `|' is treated nondeterministically in the description (major |
| function is NDFA_to_DFA). |
| |
| o optional minimization of the finite state automata by merging |
| equivalent automaton states (major function is `minimize_DFA'). |
| |
| o forming tables (some as comb vectors) and attributes |
| representing the automata (functions output_..._table). |
| |
| Function `write_automata' outputs the created finite state |
| automaton as different tables and functions which works with the |
| automata to inquire automaton state and to change its state. These |
| function are used by gcc instruction scheduler and may be some |
| other gcc code. */ |
| |
| #include "bconfig.h" |
| #include "system.h" |
| #include "coretypes.h" |
| #include "tm.h" |
| #include "rtl.h" |
| #include "obstack.h" |
| #include "errors.h" |
| #include "gensupport.h" |
| |
| #include <math.h> |
| #include "fnmatch.h" |
| |
| #ifndef CHAR_BIT |
| #define CHAR_BIT 8 |
| #endif |
| |
| /* Positions in machine description file. Now they are not used. But |
| they could be used in the future for better diagnostic messages. */ |
| typedef int pos_t; |
| |
| /* The following is element of vector of current (and planned in the |
| future) functional unit reservations. */ |
| typedef unsigned HOST_WIDE_INT set_el_t; |
| |
| /* Reservations of function units are represented by value of the following |
| type. */ |
| typedef set_el_t *reserv_sets_t; |
| typedef const set_el_t *const_reserv_sets_t; |
| |
| /* The following structure describes a ticker. */ |
| struct ticker |
| { |
| /* The following member value is time of the ticker creation with |
| taking into account time when the ticker is off. Active time of |
| the ticker is current time minus the value. */ |
| int modified_creation_time; |
| /* The following member value is time (incremented by one) when the |
| ticker was off. Zero value means that now the ticker is on. */ |
| int incremented_off_time; |
| }; |
| |
| /* The ticker is represented by the following type. */ |
| typedef struct ticker ticker_t; |
| |
| /* The following type describes elements of output vectors. */ |
| typedef HOST_WIDE_INT vect_el_t; |
| |
| /* Forward declaration of structures of internal representation of |
| pipeline description based on NDFA. */ |
| |
| struct unit_decl; |
| struct bypass_decl; |
| struct result_decl; |
| struct automaton_decl; |
| struct unit_pattern_rel_decl; |
| struct reserv_decl; |
| struct insn_reserv_decl; |
| struct decl; |
| struct unit_regexp; |
| struct result_regexp; |
| struct reserv_regexp; |
| struct nothing_regexp; |
| struct sequence_regexp; |
| struct repeat_regexp; |
| struct allof_regexp; |
| struct oneof_regexp; |
| struct regexp; |
| struct description; |
| struct unit_set_el; |
| struct pattern_set_el; |
| struct pattern_reserv; |
| struct state; |
| struct alt_state; |
| struct arc; |
| struct ainsn; |
| struct automaton; |
| struct state_ainsn_table; |
| |
| /* The following typedefs are for brevity. */ |
| typedef struct unit_decl *unit_decl_t; |
| typedef const struct unit_decl *const_unit_decl_t; |
| typedef struct decl *decl_t; |
| typedef const struct decl *const_decl_t; |
| typedef struct regexp *regexp_t; |
| typedef struct unit_set_el *unit_set_el_t; |
| typedef struct pattern_set_el *pattern_set_el_t; |
| typedef struct pattern_reserv *pattern_reserv_t; |
| typedef struct alt_state *alt_state_t; |
| typedef struct state *state_t; |
| typedef const struct state *const_state_t; |
| typedef struct arc *arc_t; |
| typedef struct ainsn *ainsn_t; |
| typedef struct automaton *automaton_t; |
| typedef struct automata_list_el *automata_list_el_t; |
| typedef const struct automata_list_el *const_automata_list_el_t; |
| typedef struct state_ainsn_table *state_ainsn_table_t; |
| |
| /* Undefined position. */ |
| static pos_t no_pos = 0; |
| |
| /* All IR is stored in the following obstack. */ |
| static struct obstack irp; |
| |
| |
| /* Declare vector types for various data structures: */ |
| |
| |
| typedef vec<vect_el_t> vla_hwint_t; |
| |
| /* Forward declarations of functions used before their definitions, only. */ |
| static regexp_t gen_regexp_sequence (const char *); |
| static void reserv_sets_or (reserv_sets_t, reserv_sets_t, |
| reserv_sets_t); |
| static reserv_sets_t get_excl_set (reserv_sets_t); |
| static int check_presence_pattern_sets (reserv_sets_t, |
| reserv_sets_t, int); |
| static int check_absence_pattern_sets (reserv_sets_t, reserv_sets_t, |
| int); |
| static arc_t first_out_arc (const_state_t); |
| static arc_t next_out_arc (arc_t); |
| |
| |
| |
| /* Options with the following names can be set up in automata_option |
| construction. Because the strings occur more one time we use the |
| macros. */ |
| |
| #define NO_MINIMIZATION_OPTION "-no-minimization" |
| #define TIME_OPTION "-time" |
| #define STATS_OPTION "-stats" |
| #define V_OPTION "-v" |
| #define W_OPTION "-w" |
| #define NDFA_OPTION "-ndfa" |
| #define COLLAPSE_OPTION "-collapse-ndfa" |
| #define NO_COMB_OPTION "-no-comb-vect" |
| #define PROGRESS_OPTION "-progress" |
| |
| /* The following flags are set up by function `initiate_automaton_gen'. */ |
| |
| /* Make automata with nondeterministic reservation by insns (`-ndfa'). */ |
| static int ndfa_flag; |
| |
| /* When making an NDFA, produce additional transitions that collapse |
| NDFA state into a deterministic one suitable for querying CPU units. |
| Provide advance-state transitions only for deterministic states. */ |
| static int collapse_flag; |
| |
| /* Do not make minimization of DFA (`-no-minimization'). */ |
| static int no_minimization_flag; |
| |
| /* Do not try to generate a comb vector (`-no-comb-vect'). */ |
| static int no_comb_flag; |
| |
| /* Value of this variable is number of automata being generated. The |
| actual number of automata may be less this value if there is not |
| sufficient number of units. This value is defined by argument of |
| option `-split' or by constructions automaton if the value is zero |
| (it is default value of the argument). */ |
| static int split_argument; |
| |
| /* Flag of output time statistics (`-time'). */ |
| static int time_flag; |
| |
| /* Flag of automata statistics (`-stats'). */ |
| static int stats_flag; |
| |
| /* Flag of creation of description file which contains description of |
| result automaton and statistics information (`-v'). */ |
| static int v_flag; |
| |
| /* Flag of output of a progress bar showing how many states were |
| generated so far for automaton being processed (`-progress'). */ |
| static int progress_flag; |
| |
| /* Flag of generating warning instead of error for non-critical errors |
| (`-w'). */ |
| static int w_flag; |
| |
| |
| /* Output file for pipeline hazard recognizer (PHR) being generated. |
| The value is NULL if the file is not defined. */ |
| static FILE *output_file; |
| |
| /* Description file of PHR. The value is NULL if the file is not |
| created. */ |
| static FILE *output_description_file; |
| |
| /* PHR description file name. */ |
| static char *output_description_file_name; |
| |
| /* Value of the following variable is node representing description |
| being processed. This is start point of IR. */ |
| static struct description *description; |
| |
| |
| |
| /* This page contains description of IR structure (nodes). */ |
| |
| enum decl_mode |
| { |
| dm_unit, |
| dm_bypass, |
| dm_automaton, |
| dm_excl, |
| dm_presence, |
| dm_absence, |
| dm_reserv, |
| dm_insn_reserv |
| }; |
| |
| /* This describes define_cpu_unit and define_query_cpu_unit (see file |
| rtl.def). */ |
| struct unit_decl |
| { |
| const char *name; |
| /* NULL if the automaton name is absent. */ |
| const char *automaton_name; |
| /* If the following value is not zero, the cpu unit reservation is |
| described in define_query_cpu_unit. */ |
| char query_p; |
| |
| /* The following fields are defined by checker. */ |
| |
| /* The following field value is nonzero if the unit is used in an |
| regexp. */ |
| char unit_is_used; |
| |
| /* The following field value is order number (0, 1, ...) of given |
| unit. */ |
| int unit_num; |
| /* The following field value is corresponding declaration of |
| automaton which was given in description. If the field value is |
| NULL then automaton in the unit declaration was absent. */ |
| struct automaton_decl *automaton_decl; |
| /* The following field value is maximal cycle number (1, ...) on |
| which given unit occurs in insns. Zero value means that given |
| unit is not used in insns. */ |
| int max_occ_cycle_num; |
| /* The following field value is minimal cycle number (0, ...) on |
| which given unit occurs in insns. -1 value means that given |
| unit is not used in insns. */ |
| int min_occ_cycle_num; |
| /* The following list contains units which conflict with given |
| unit. */ |
| unit_set_el_t excl_list; |
| /* The following list contains patterns which are required to |
| reservation of given unit. */ |
| pattern_set_el_t presence_list; |
| pattern_set_el_t final_presence_list; |
| /* The following list contains patterns which should be not present |
| in reservation for given unit. */ |
| pattern_set_el_t absence_list; |
| pattern_set_el_t final_absence_list; |
| /* The following is used only when `query_p' has nonzero value. |
| This is query number for the unit. */ |
| int query_num; |
| /* The following is the last cycle on which the unit was checked for |
| correct distributions of units to automata in a regexp. */ |
| int last_distribution_check_cycle; |
| |
| /* The following fields are defined by automaton generator. */ |
| |
| /* The following field value is number of the automaton to which |
| given unit belongs. */ |
| int corresponding_automaton_num; |
| /* If the following value is not zero, the cpu unit is present in a |
| `exclusion_set' or in right part of a `presence_set', |
| `final_presence_set', `absence_set', and |
| `final_absence_set'define_query_cpu_unit. */ |
| char in_set_p; |
| }; |
| |
| /* This describes define_bypass (see file rtl.def). */ |
| struct bypass_decl |
| { |
| int latency; |
| const char *out_pattern; |
| const char *in_pattern; |
| const char *bypass_guard_name; |
| |
| /* The following fields are defined by checker. */ |
| |
| /* output and input insns of given bypass. */ |
| struct insn_reserv_decl *out_insn_reserv; |
| struct insn_reserv_decl *in_insn_reserv; |
| /* The next bypass for given output insn. */ |
| struct bypass_decl *next; |
| }; |
| |
| /* This describes define_automaton (see file rtl.def). */ |
| struct automaton_decl |
| { |
| const char *name; |
| |
| /* The following fields are defined by automaton generator. */ |
| |
| /* The following field value is nonzero if the automaton is used in |
| an regexp definition. */ |
| char automaton_is_used; |
| |
| /* The following fields are defined by checker. */ |
| |
| /* The following field value is the corresponding automaton. This |
| field is not NULL only if the automaton is present in unit |
| declarations and the automatic partition on automata is not |
| used. */ |
| automaton_t corresponding_automaton; |
| }; |
| |
| /* This describes exclusion relations: exclusion_set (see file |
| rtl.def). */ |
| struct excl_rel_decl |
| { |
| int all_names_num; |
| int first_list_length; |
| char *names [1]; |
| }; |
| |
| /* This describes unit relations: [final_]presence_set or |
| [final_]absence_set (see file rtl.def). */ |
| struct unit_pattern_rel_decl |
| { |
| int final_p; |
| int names_num; |
| int patterns_num; |
| char **names; |
| char ***patterns; |
| }; |
| |
| /* This describes define_reservation (see file rtl.def). */ |
| struct reserv_decl |
| { |
| const char *name; |
| regexp_t regexp; |
| |
| /* The following fields are defined by checker. */ |
| |
| /* The following field value is nonzero if the unit is used in an |
| regexp. */ |
| char reserv_is_used; |
| /* The following field is used to check up cycle in expression |
| definition. */ |
| int loop_pass_num; |
| }; |
| |
| /* This describes define_insn_reservation (see file rtl.def). */ |
| struct insn_reserv_decl |
| { |
| rtx condexp; |
| int default_latency; |
| regexp_t regexp; |
| const char *name; |
| |
| /* The following fields are defined by checker. */ |
| |
| /* The following field value is order number (0, 1, ...) of given |
| insn. */ |
| int insn_num; |
| /* The following field value is list of bypasses in which given insn |
| is output insn. Bypasses with the same input insn stay one after |
| another in the list in the same order as their occurrences in the |
| description but the bypass without a guard stays always the last |
| in a row of bypasses with the same input insn. */ |
| struct bypass_decl *bypass_list; |
| |
| /* The following fields are defined by automaton generator. */ |
| |
| /* The following field is the insn regexp transformed that |
| the regexp has not optional regexp, repetition regexp, and an |
| reservation name (i.e. reservation identifiers are changed by the |
| corresponding regexp) and all alternations are the top level |
| of the regexp. The value can be NULL only if it is special |
| insn `cycle advancing'. */ |
| regexp_t transformed_regexp; |
| /* The following field value is list of arcs marked given |
| insn. The field is used in transformation NDFA -> DFA. */ |
| arc_t arcs_marked_by_insn; |
| /* The two following fields are used during minimization of a finite state |
| automaton. */ |
| /* The field value is number of equivalence class of state into |
| which arc marked by given insn enters from a state (fixed during |
| an automaton minimization). */ |
| int equiv_class_num; |
| /* The following member value is the list to automata which can be |
| changed by the insn issue. */ |
| automata_list_el_t important_automata_list; |
| /* The following member is used to process insn once for output. */ |
| int processed_p; |
| }; |
| |
| /* This contains a declaration mentioned above. */ |
| struct decl |
| { |
| /* What node in the union? */ |
| enum decl_mode mode; |
| pos_t pos; |
| union |
| { |
| struct unit_decl unit; |
| struct bypass_decl bypass; |
| struct automaton_decl automaton; |
| struct excl_rel_decl excl; |
| struct unit_pattern_rel_decl presence; |
| struct unit_pattern_rel_decl absence; |
| struct reserv_decl reserv; |
| struct insn_reserv_decl insn_reserv; |
| } decl; |
| }; |
| |
| /* The following structures represent parsed reservation strings. */ |
| enum regexp_mode |
| { |
| rm_unit, |
| rm_reserv, |
| rm_nothing, |
| rm_sequence, |
| rm_repeat, |
| rm_allof, |
| rm_oneof |
| }; |
| |
| /* Cpu unit in reservation. */ |
| struct unit_regexp |
| { |
| const char *name; |
| unit_decl_t unit_decl; |
| }; |
| |
| /* Define_reservation in a reservation. */ |
| struct reserv_regexp |
| { |
| const char *name; |
| struct reserv_decl *reserv_decl; |
| }; |
| |
| /* Absence of reservation (represented by string `nothing'). */ |
| struct nothing_regexp |
| { |
| /* This used to be empty but ISO C doesn't allow that. */ |
| char unused; |
| }; |
| |
| /* Representation of reservations separated by ',' (see file |
| rtl.def). */ |
| struct sequence_regexp |
| { |
| int regexps_num; |
| regexp_t regexps [1]; |
| }; |
| |
| /* Representation of construction `repeat' (see file rtl.def). */ |
| struct repeat_regexp |
| { |
| int repeat_num; |
| regexp_t regexp; |
| }; |
| |
| /* Representation of reservations separated by '+' (see file |
| rtl.def). */ |
| struct allof_regexp |
| { |
| int regexps_num; |
| regexp_t regexps [1]; |
| }; |
| |
| /* Representation of reservations separated by '|' (see file |
| rtl.def). */ |
| struct oneof_regexp |
| { |
| int regexps_num; |
| regexp_t regexps [1]; |
| }; |
| |
| /* Representation of a reservation string. */ |
| struct regexp |
| { |
| /* What node in the union? */ |
| enum regexp_mode mode; |
| pos_t pos; |
| union |
| { |
| struct unit_regexp unit; |
| struct reserv_regexp reserv; |
| struct nothing_regexp nothing; |
| struct sequence_regexp sequence; |
| struct repeat_regexp repeat; |
| struct allof_regexp allof; |
| struct oneof_regexp oneof; |
| } regexp; |
| }; |
| |
| /* Represents description of pipeline hazard description based on |
| NDFA. */ |
| struct description |
| { |
| int decls_num, normal_decls_num; |
| |
| /* The following fields are defined by checker. */ |
| |
| /* The following fields values are correspondingly number of all |
| units, query units, and insns in the description. */ |
| int units_num; |
| int query_units_num; |
| int insns_num; |
| /* The following field value is max length (in cycles) of |
| reservations of insns. The field value is defined only for |
| correct programs. */ |
| int max_insn_reserv_cycles; |
| |
| /* The following fields are defined by automaton generator. */ |
| |
| /* The following field value is the first automaton. */ |
| automaton_t first_automaton; |
| |
| /* The following field is created by pipeline hazard parser and |
| contains all declarations. We allocate additional entries for |
| two special insns which are added by the automaton generator. */ |
| decl_t decls [1]; |
| }; |
| |
| |
| /* The following nodes are created in automaton checker. */ |
| |
| /* The following nodes represent exclusion set for cpu units. Each |
| element is accessed through only one excl_list. */ |
| struct unit_set_el |
| { |
| unit_decl_t unit_decl; |
| unit_set_el_t next_unit_set_el; |
| }; |
| |
| /* The following nodes represent presence or absence pattern for cpu |
| units. Each element is accessed through only one presence_list or |
| absence_list. */ |
| struct pattern_set_el |
| { |
| /* The number of units in unit_decls. */ |
| int units_num; |
| /* The units forming the pattern. */ |
| struct unit_decl **unit_decls; |
| pattern_set_el_t next_pattern_set_el; |
| }; |
| |
| |
| /* The following nodes are created in automaton generator. */ |
| |
| |
| /* The following nodes represent presence or absence pattern for cpu |
| units. Each element is accessed through only one element of |
| unit_presence_set_table or unit_absence_set_table. */ |
| struct pattern_reserv |
| { |
| reserv_sets_t reserv; |
| pattern_reserv_t next_pattern_reserv; |
| }; |
| |
| /* The following node type describes state automaton. The state may |
| be deterministic or non-deterministic. Non-deterministic state has |
| several component states which represent alternative cpu units |
| reservations. The state also is used for describing a |
| deterministic reservation of automaton insn. */ |
| struct state |
| { |
| /* The following member value is nonzero if there is a transition by |
| cycle advancing. */ |
| int new_cycle_p; |
| /* The following field is list of processor unit reservations on |
| each cycle. */ |
| reserv_sets_t reservs; |
| /* The following field is unique number of given state between other |
| states. */ |
| int unique_num; |
| /* The following field value is automaton to which given state |
| belongs. */ |
| automaton_t automaton; |
| /* The following field value is the first arc output from given |
| state. */ |
| arc_t first_out_arc; |
| unsigned int num_out_arcs; |
| /* The following field is used to form NDFA. */ |
| char it_was_placed_in_stack_for_NDFA_forming; |
| /* The following field is used to form DFA. */ |
| char it_was_placed_in_stack_for_DFA_forming; |
| /* The following field is used to transform NDFA to DFA and DFA |
| minimization. The field value is not NULL if the state is a |
| compound state. In this case the value of field `unit_sets_list' |
| is NULL. All states in the list are in the hash table. The list |
| is formed through field `next_sorted_alt_state'. We should |
| support only one level of nesting state. */ |
| alt_state_t component_states; |
| /* The following field is used for passing graph of states. */ |
| int pass_num; |
| /* The list of states belonging to one equivalence class is formed |
| with the aid of the following field. */ |
| state_t next_equiv_class_state; |
| /* The two following fields are used during minimization of a finite |
| state automaton. */ |
| int equiv_class_num_1, equiv_class_num_2; |
| /* The following field is used during minimization of a finite state |
| automaton. The field value is state corresponding to equivalence |
| class to which given state belongs. */ |
| state_t equiv_class_state; |
| unsigned int *presence_signature; |
| /* The following field value is the order number of given state. |
| The states in final DFA is enumerated with the aid of the |
| following field. */ |
| int order_state_num; |
| /* This member is used for passing states for searching minimal |
| delay time. */ |
| int state_pass_num; |
| /* The following member is used to evaluate min issue delay of insn |
| for a state. */ |
| int min_insn_issue_delay; |
| }; |
| |
| /* Automaton arc. */ |
| struct arc |
| { |
| /* The following field refers for the state into which given arc |
| enters. */ |
| state_t to_state; |
| /* The following field describes that the insn issue (with cycle |
| advancing for special insn `cycle advancing' and without cycle |
| advancing for others) makes transition from given state to |
| another given state. */ |
| ainsn_t insn; |
| /* The following field value is the next arc output from the same |
| state. */ |
| arc_t next_out_arc; |
| /* List of arcs marked given insn is formed with the following |
| field. The field is used in transformation NDFA -> DFA. */ |
| arc_t next_arc_marked_by_insn; |
| }; |
| |
| /* The following node type describes a deterministic alternative in |
| non-deterministic state which characterizes cpu unit reservations |
| of automaton insn or which is part of NDFA. */ |
| struct alt_state |
| { |
| /* The following field is a deterministic state which characterizes |
| unit reservations of the instruction. */ |
| state_t state; |
| /* The following field refers to the next state which characterizes |
| unit reservations of the instruction. */ |
| alt_state_t next_alt_state; |
| /* The following field refers to the next state in sorted list. */ |
| alt_state_t next_sorted_alt_state; |
| }; |
| |
| /* The following node type describes insn of automaton. They are |
| labels of FA arcs. */ |
| struct ainsn |
| { |
| /* The following field value is the corresponding insn declaration |
| of description. */ |
| struct insn_reserv_decl *insn_reserv_decl; |
| /* The following field value is the next insn declaration for an |
| automaton. */ |
| ainsn_t next_ainsn; |
| /* The following field is states which characterize automaton unit |
| reservations of the instruction. The value can be NULL only if it |
| is special insn `cycle advancing'. */ |
| alt_state_t alt_states; |
| /* The following field is sorted list of states which characterize |
| automaton unit reservations of the instruction. The value can be |
| NULL only if it is special insn `cycle advancing'. */ |
| alt_state_t sorted_alt_states; |
| /* The following field refers the next automaton insn with |
| the same reservations. */ |
| ainsn_t next_same_reservs_insn; |
| /* The following field is flag of the first automaton insn with the |
| same reservations in the declaration list. Only arcs marked such |
| insn is present in the automaton. This significantly decreases |
| memory requirements especially when several automata are |
| formed. */ |
| char first_insn_with_same_reservs; |
| /* The following member has nonzero value if there is arc from state of |
| the automaton marked by the ainsn. */ |
| char arc_exists_p; |
| /* Cyclic list of insns of an equivalence class is formed with the |
| aid of the following field. */ |
| ainsn_t next_equiv_class_insn; |
| /* The following field value is nonzero if the insn declaration is |
| the first insn declaration with given equivalence number. */ |
| char first_ainsn_with_given_equivalence_num; |
| /* The following field is number of class of equivalence of insns. |
| It is necessary because many insns may be equivalent with the |
| point of view of pipeline hazards. */ |
| int insn_equiv_class_num; |
| /* The following member value is TRUE if there is an arc in the |
| automaton marked by the insn into another state. In other |
| words, the insn can change the state of the automaton. */ |
| int important_p; |
| }; |
| |
| /* The following describes an automaton for PHR. */ |
| struct automaton |
| { |
| /* The following field value is the list of insn declarations for |
| given automaton. */ |
| ainsn_t ainsn_list; |
| /* Pointers to the ainsns corresponding to the special reservations. */ |
| ainsn_t advance_ainsn, collapse_ainsn; |
| |
| /* The following field value is the corresponding automaton |
| declaration. This field is not NULL only if the automatic |
| partition on automata is not used. */ |
| struct automaton_decl *corresponding_automaton_decl; |
| /* The following field value is the next automaton. */ |
| automaton_t next_automaton; |
| /* The following field is start state of FA. There are not unit |
| reservations in the state. */ |
| state_t start_state; |
| /* The following field value is number of equivalence classes of |
| insns (see field `insn_equiv_class_num' in |
| `insn_reserv_decl'). */ |
| int insn_equiv_classes_num; |
| /* The following field value is number of states of final DFA. */ |
| int achieved_states_num; |
| /* The following field value is the order number (0, 1, ...) of |
| given automaton. */ |
| int automaton_order_num; |
| /* The following fields contain statistics information about |
| building automaton. */ |
| int NDFA_states_num, DFA_states_num; |
| /* The following field value is defined only if minimization of DFA |
| is used. */ |
| int minimal_DFA_states_num; |
| int NDFA_arcs_num, DFA_arcs_num; |
| /* The following field value is defined only if minimization of DFA |
| is used. */ |
| int minimal_DFA_arcs_num; |
| /* The following member refers for two table state x ainsn -> int. |
| ??? Above sentence is incomprehensible. */ |
| state_ainsn_table_t trans_table; |
| /* The following member value is maximal value of min issue delay |
| for insns of the automaton. */ |
| int max_min_delay; |
| /* Usually min issue delay is small and we can place several (2, 4, |
| 8) elements in one vector element. So the compression factor can |
| be 1 (no compression), 2, 4, 8. */ |
| int min_issue_delay_table_compression_factor; |
| /* Total number of locked states in this automaton. */ |
| int locked_states; |
| }; |
| |
| /* The following is the element of the list of automata. */ |
| struct automata_list_el |
| { |
| /* The automaton itself. */ |
| automaton_t automaton; |
| /* The next automata set element. */ |
| automata_list_el_t next_automata_list_el; |
| }; |
| |
| /* The following structure describes a table state X ainsn -> int(>= 0). */ |
| struct state_ainsn_table |
| { |
| /* Automaton to which given table belongs. */ |
| automaton_t automaton; |
| /* The following tree vectors for comb vector implementation of the |
| table. */ |
| vla_hwint_t comb_vect; |
| vla_hwint_t check_vect; |
| vla_hwint_t base_vect; |
| /* This is simple implementation of the table. */ |
| vla_hwint_t full_vect; |
| /* Minimal and maximal values of the previous vectors. */ |
| int min_comb_vect_el_value, max_comb_vect_el_value; |
| int min_base_vect_el_value, max_base_vect_el_value; |
| }; |
| |
| /* Macros to access members of unions. Use only them for access to |
| union members of declarations and regexps. */ |
| |
| #if CHECKING_P && (GCC_VERSION >= 2007) |
| |
| #define DECL_UNIT(d) __extension__ \ |
| (({ __typeof (d) const _decl = (d); \ |
| if (_decl->mode != dm_unit) \ |
| decl_mode_check_failed (_decl->mode, "dm_unit", \ |
| __FILE__, __LINE__, __FUNCTION__); \ |
| &(_decl)->decl.unit; })) |
| |
| #define DECL_BYPASS(d) __extension__ \ |
| (({ __typeof (d) const _decl = (d); \ |
| if (_decl->mode != dm_bypass) \ |
| decl_mode_check_failed (_decl->mode, "dm_bypass", \ |
| __FILE__, __LINE__, __FUNCTION__); \ |
| &(_decl)->decl.bypass; })) |
| |
| #define DECL_AUTOMATON(d) __extension__ \ |
| (({ __typeof (d) const _decl = (d); \ |
| if (_decl->mode != dm_automaton) \ |
| decl_mode_check_failed (_decl->mode, "dm_automaton", \ |
| __FILE__, __LINE__, __FUNCTION__); \ |
| &(_decl)->decl.automaton; })) |
| |
| #define DECL_EXCL(d) __extension__ \ |
| (({ __typeof (d) const _decl = (d); \ |
| if (_decl->mode != dm_excl) \ |
| decl_mode_check_failed (_decl->mode, "dm_excl", \ |
| __FILE__, __LINE__, __FUNCTION__); \ |
| &(_decl)->decl.excl; })) |
| |
| #define DECL_PRESENCE(d) __extension__ \ |
| (({ __typeof (d) const _decl = (d); \ |
| if (_decl->mode != dm_presence) \ |
| decl_mode_check_failed (_decl->mode, "dm_presence", \ |
| __FILE__, __LINE__, __FUNCTION__); \ |
| &(_decl)->decl.presence; })) |
| |
| #define DECL_ABSENCE(d) __extension__ \ |
| (({ __typeof (d) const _decl = (d); \ |
| if (_decl->mode != dm_absence) \ |
| decl_mode_check_failed (_decl->mode, "dm_absence", \ |
| __FILE__, __LINE__, __FUNCTION__); \ |
| &(_decl)->decl.absence; })) |
| |
| #define DECL_RESERV(d) __extension__ \ |
| (({ __typeof (d) const _decl = (d); \ |
| if (_decl->mode != dm_reserv) \ |
| decl_mode_check_failed (_decl->mode, "dm_reserv", \ |
| __FILE__, __LINE__, __FUNCTION__); \ |
| &(_decl)->decl.reserv; })) |
| |
| #define DECL_INSN_RESERV(d) __extension__ \ |
| (({ __typeof (d) const _decl = (d); \ |
| if (_decl->mode != dm_insn_reserv) \ |
| decl_mode_check_failed (_decl->mode, "dm_insn_reserv", \ |
| __FILE__, __LINE__, __FUNCTION__); \ |
| &(_decl)->decl.insn_reserv; })) |
| |
| static const char *decl_name (enum decl_mode); |
| static void decl_mode_check_failed (enum decl_mode, const char *, |
| const char *, int, const char *) |
| ATTRIBUTE_NORETURN; |
| |
| /* Return string representation of declaration mode MODE. */ |
| static const char * |
| decl_name (enum decl_mode mode) |
| { |
| static char str [100]; |
| |
| if (mode == dm_unit) |
| return "dm_unit"; |
| else if (mode == dm_bypass) |
| return "dm_bypass"; |
| else if (mode == dm_automaton) |
| return "dm_automaton"; |
| else if (mode == dm_excl) |
| return "dm_excl"; |
| else if (mode == dm_presence) |
| return "dm_presence"; |
| else if (mode == dm_absence) |
| return "dm_absence"; |
| else if (mode == dm_reserv) |
| return "dm_reserv"; |
| else if (mode == dm_insn_reserv) |
| return "dm_insn_reserv"; |
| else |
| sprintf (str, "unknown (%d)", (int) mode); |
| return str; |
| } |
| |
| /* The function prints message about unexpected declaration and finish |
| the program. */ |
| static void |
| decl_mode_check_failed (enum decl_mode mode, const char *expected_mode_str, |
| const char *file, int line, const char *func) |
| { |
| fprintf |
| (stderr, |
| "\n%s: %d: error in %s: DECL check: expected decl %s, have %s\n", |
| file, line, func, expected_mode_str, decl_name (mode)); |
| exit (1); |
| } |
| |
| |
| #define REGEXP_UNIT(r) __extension__ \ |
| (({ struct regexp *const _regexp = (r); \ |
| if (_regexp->mode != rm_unit) \ |
| regexp_mode_check_failed (_regexp->mode, "rm_unit", \ |
| __FILE__, __LINE__, __FUNCTION__); \ |
| &(_regexp)->regexp.unit; })) |
| |
| #define REGEXP_RESERV(r) __extension__ \ |
| (({ struct regexp *const _regexp = (r); \ |
| if (_regexp->mode != rm_reserv) \ |
| regexp_mode_check_failed (_regexp->mode, "rm_reserv", \ |
| __FILE__, __LINE__, __FUNCTION__); \ |
| &(_regexp)->regexp.reserv; })) |
| |
| #define REGEXP_SEQUENCE(r) __extension__ \ |
| (({ struct regexp *const _regexp = (r); \ |
| if (_regexp->mode != rm_sequence) \ |
| regexp_mode_check_failed (_regexp->mode, "rm_sequence", \ |
| __FILE__, __LINE__, __FUNCTION__); \ |
| &(_regexp)->regexp.sequence; })) |
| |
| #define REGEXP_REPEAT(r) __extension__ \ |
| (({ struct regexp *const _regexp = (r); \ |
| if (_regexp->mode != rm_repeat) \ |
| regexp_mode_check_failed (_regexp->mode, "rm_repeat", \ |
| __FILE__, __LINE__, __FUNCTION__); \ |
| &(_regexp)->regexp.repeat; })) |
| |
| #define REGEXP_ALLOF(r) __extension__ \ |
| (({ struct regexp *const _regexp = (r); \ |
| if (_regexp->mode != rm_allof) \ |
| regexp_mode_check_failed (_regexp->mode, "rm_allof", \ |
| __FILE__, __LINE__, __FUNCTION__); \ |
| &(_regexp)->regexp.allof; })) |
| |
| #define REGEXP_ONEOF(r) __extension__ \ |
| (({ struct regexp *const _regexp = (r); \ |
| if (_regexp->mode != rm_oneof) \ |
| regexp_mode_check_failed (_regexp->mode, "rm_oneof", \ |
| __FILE__, __LINE__, __FUNCTION__); \ |
| &(_regexp)->regexp.oneof; })) |
| |
| static const char *regexp_name (enum regexp_mode); |
| static void regexp_mode_check_failed (enum regexp_mode, const char *, |
| const char *, int, |
| const char *) ATTRIBUTE_NORETURN; |
| |
| |
| /* Return string representation of regexp mode MODE. */ |
| static const char * |
| regexp_name (enum regexp_mode mode) |
| { |
| switch (mode) |
| { |
| case rm_unit: |
| return "rm_unit"; |
| case rm_reserv: |
| return "rm_reserv"; |
| case rm_nothing: |
| return "rm_nothing"; |
| case rm_sequence: |
| return "rm_sequence"; |
| case rm_repeat: |
| return "rm_repeat"; |
| case rm_allof: |
| return "rm_allof"; |
| case rm_oneof: |
| return "rm_oneof"; |
| default: |
| gcc_unreachable (); |
| } |
| } |
| |
| /* The function prints message about unexpected regexp and finish the |
| program. */ |
| static void |
| regexp_mode_check_failed (enum regexp_mode mode, |
| const char *expected_mode_str, |
| const char *file, int line, const char *func) |
| { |
| fprintf |
| (stderr, |
| "\n%s: %d: error in %s: REGEXP check: expected decl %s, have %s\n", |
| file, line, func, expected_mode_str, regexp_name (mode)); |
| exit (1); |
| } |
| |
| #else /* #if CHECKING_P && (GCC_VERSION >= 2007) */ |
| |
| #define DECL_UNIT(d) (&(d)->decl.unit) |
| #define DECL_BYPASS(d) (&(d)->decl.bypass) |
| #define DECL_AUTOMATON(d) (&(d)->decl.automaton) |
| #define DECL_EXCL(d) (&(d)->decl.excl) |
| #define DECL_PRESENCE(d) (&(d)->decl.presence) |
| #define DECL_ABSENCE(d) (&(d)->decl.absence) |
| #define DECL_RESERV(d) (&(d)->decl.reserv) |
| #define DECL_INSN_RESERV(d) (&(d)->decl.insn_reserv) |
| |
| #define REGEXP_UNIT(r) (&(r)->regexp.unit) |
| #define REGEXP_RESERV(r) (&(r)->regexp.reserv) |
| #define REGEXP_SEQUENCE(r) (&(r)->regexp.sequence) |
| #define REGEXP_REPEAT(r) (&(r)->regexp.repeat) |
| #define REGEXP_ALLOF(r) (&(r)->regexp.allof) |
| #define REGEXP_ONEOF(r) (&(r)->regexp.oneof) |
| |
| #endif /* #if CHECKING_P && (GCC_VERSION >= 2007) */ |
| |
| #define XCREATENODE(T) ((T *) create_node (sizeof (T))) |
| #define XCREATENODEVEC(T, N) ((T *) create_node (sizeof (T) * (N))) |
| #define XCREATENODEVAR(T, S) ((T *) create_node ((S))) |
| |
| #define XCOPYNODE(T, P) ((T *) copy_node ((P), sizeof (T))) |
| #define XCOPYNODEVEC(T, P, N) ((T *) copy_node ((P), sizeof (T) * (N))) |
| #define XCOPYNODEVAR(T, P, S) ((T *) copy_node ((P), (S))) |
| |
| /* Create IR structure (node). */ |
| static void * |
| create_node (size_t size) |
| { |
| void *result; |
| |
| obstack_blank (&irp, size); |
| result = obstack_base (&irp); |
| obstack_finish (&irp); |
| /* Default values of members are NULL and zero. */ |
| memset (result, 0, size); |
| return result; |
| } |
| |
| /* Copy IR structure (node). */ |
| static void * |
| copy_node (const void *from, size_t size) |
| { |
| void *const result = create_node (size); |
| memcpy (result, from, size); |
| return result; |
| } |
| |
| /* The function checks that NAME does not contain quotes (`"'). */ |
| static const char * |
| check_name (const char * name, pos_t pos ATTRIBUTE_UNUSED) |
| { |
| const char *str; |
| |
| for (str = name; *str != '\0'; str++) |
| if (*str == '\"') |
| error ("Name `%s' contains quotes", name); |
| return name; |
| } |
| |
| /* Pointers to all declarations during IR generation are stored in the |
| following. */ |
| static vec<decl_t> decls; |
| |
| /* Given a pointer to a (char *) and a separator, return an alloc'ed |
| string containing the next separated element, taking parentheses |
| into account if PAR_FLAG has nonzero value. Advance the pointer to |
| after the string scanned, or the end-of-string. Return NULL if at |
| end of string. */ |
| static char * |
| next_sep_el (const char **pstr, int sep, int par_flag) |
| { |
| char *out_str; |
| const char *p; |
| int pars_num; |
| int n_spaces; |
| |
| /* Remove leading whitespaces. */ |
| while (ISSPACE ((int) **pstr)) |
| (*pstr)++; |
| |
| if (**pstr == '\0') |
| return NULL; |
| |
| n_spaces = 0; |
| for (pars_num = 0, p = *pstr; *p != '\0'; p++) |
| { |
| if (par_flag && *p == '(') |
| pars_num++; |
| else if (par_flag && *p == ')') |
| pars_num--; |
| else if (pars_num == 0 && *p == sep) |
| break; |
| if (pars_num == 0 && ISSPACE ((int) *p)) |
| n_spaces++; |
| else |
| { |
| for (; n_spaces != 0; n_spaces--) |
| obstack_1grow (&irp, p [-n_spaces]); |
| obstack_1grow (&irp, *p); |
| } |
| } |
| obstack_1grow (&irp, '\0'); |
| out_str = (char *) obstack_base (&irp); |
| obstack_finish (&irp); |
| |
| *pstr = p; |
| if (**pstr == sep) |
| (*pstr)++; |
| |
| return out_str; |
| } |
| |
| /* Given a string and a separator, return the number of separated |
| elements in it, taking parentheses into account if PAR_FLAG has |
| nonzero value. Return 0 for the null string, -1 if parentheses is |
| not balanced. */ |
| static int |
| n_sep_els (const char *s, int sep, int par_flag) |
| { |
| int n; |
| int pars_num; |
| |
| if (*s == '\0') |
| return 0; |
| |
| for (pars_num = 0, n = 1; *s; s++) |
| if (par_flag && *s == '(') |
| pars_num++; |
| else if (par_flag && *s == ')') |
| pars_num--; |
| else if (pars_num == 0 && *s == sep) |
| n++; |
| |
| return (pars_num != 0 ? -1 : n); |
| } |
| |
| /* Given a string and a separator, return vector of strings which are |
| elements in the string and number of elements through els_num. |
| Take parentheses into account if PAREN_P has nonzero value. The |
| function also inserts the end marker NULL at the end of vector. |
| Return 0 for the null string, -1 if parentheses are not balanced. */ |
| static char ** |
| get_str_vect (const char *str, int *els_num, int sep, int paren_p) |
| { |
| int i; |
| char **vect; |
| const char **pstr; |
| char *trail; |
| |
| *els_num = n_sep_els (str, sep, paren_p); |
| if (*els_num <= 0) |
| return NULL; |
| obstack_blank (&irp, sizeof (char *) * (*els_num + 1)); |
| vect = (char **) obstack_base (&irp); |
| obstack_finish (&irp); |
| pstr = &str; |
| for (i = 0; i < *els_num; i++) |
| vect [i] = next_sep_el (pstr, sep, paren_p); |
| trail = next_sep_el (pstr, sep, paren_p); |
| gcc_assert (!trail); |
| vect [i] = NULL; |
| return vect; |
| } |
| |
| /* Process a DEFINE_CPU_UNIT. |
| |
| This gives information about a unit contained in CPU. We fill a |
| struct unit_decl with information used later by `expand_automata'. */ |
| static void |
| gen_cpu_unit (md_rtx_info *info) |
| { |
| decl_t decl; |
| char **str_cpu_units; |
| int vect_length; |
| int i; |
| |
| rtx def = info->def; |
| str_cpu_units = get_str_vect (XSTR (def, 0), &vect_length, ',', FALSE); |
| if (str_cpu_units == NULL) |
| fatal_at (info->loc, "invalid string `%s' in %s", |
| XSTR (def, 0), GET_RTX_NAME (GET_CODE (def))); |
| for (i = 0; i < vect_length; i++) |
| { |
| decl = XCREATENODE (struct decl); |
| decl->mode = dm_unit; |
| decl->pos = 0; |
| DECL_UNIT (decl)->name = check_name (str_cpu_units [i], decl->pos); |
| DECL_UNIT (decl)->automaton_name = XSTR (def, 1); |
| DECL_UNIT (decl)->query_p = 0; |
| DECL_UNIT (decl)->min_occ_cycle_num = -1; |
| DECL_UNIT (decl)->in_set_p = 0; |
| decls.safe_push (decl); |
| } |
| } |
| |
| /* Process a DEFINE_QUERY_CPU_UNIT. |
| |
| This gives information about a unit contained in CPU. We fill a |
| struct unit_decl with information used later by `expand_automata'. */ |
| static void |
| gen_query_cpu_unit (md_rtx_info *info) |
| { |
| decl_t decl; |
| char **str_cpu_units; |
| int vect_length; |
| int i; |
| |
| rtx def = info->def; |
| str_cpu_units = get_str_vect (XSTR (def, 0), &vect_length, ',', |
| FALSE); |
| if (str_cpu_units == NULL) |
| fatal_at (info->loc, "invalid string `%s' in %s", |
| XSTR (def, 0), GET_RTX_NAME (GET_CODE (def))); |
| for (i = 0; i < vect_length; i++) |
| { |
| decl = XCREATENODE (struct decl); |
| decl->mode = dm_unit; |
| decl->pos = 0; |
| DECL_UNIT (decl)->name = check_name (str_cpu_units [i], decl->pos); |
| DECL_UNIT (decl)->automaton_name = XSTR (def, 1); |
| DECL_UNIT (decl)->query_p = 1; |
| decls.safe_push (decl); |
| } |
| } |
| |
| /* Process a DEFINE_BYPASS. |
| |
| This gives information about a unit contained in the CPU. We fill |
| in a struct bypass_decl with information used later by |
| `expand_automata'. */ |
| static void |
| gen_bypass (md_rtx_info *info) |
| { |
| decl_t decl; |
| char **out_patterns; |
| int out_length; |
| char **in_patterns; |
| int in_length; |
| int i, j; |
| |
| rtx def = info->def; |
| out_patterns = get_str_vect (XSTR (def, 1), &out_length, ',', FALSE); |
| if (out_patterns == NULL) |
| fatal_at (info->loc, "invalid string `%s' in %s", |
| XSTR (def, 1), GET_RTX_NAME (GET_CODE (def))); |
| in_patterns = get_str_vect (XSTR (def, 2), &in_length, ',', FALSE); |
| if (in_patterns == NULL) |
| fatal_at (info->loc, "invalid string `%s' in %s", |
| XSTR (def, 2), GET_RTX_NAME (GET_CODE (def))); |
| for (i = 0; i < out_length; i++) |
| for (j = 0; j < in_length; j++) |
| { |
| decl = XCREATENODE (struct decl); |
| decl->mode = dm_bypass; |
| decl->pos = 0; |
| DECL_BYPASS (decl)->latency = XINT (def, 0); |
| DECL_BYPASS (decl)->out_pattern = out_patterns[i]; |
| DECL_BYPASS (decl)->in_pattern = in_patterns[j]; |
| DECL_BYPASS (decl)->bypass_guard_name = XSTR (def, 3); |
| decls.safe_push (decl); |
| } |
| } |
| |
| /* Process an EXCLUSION_SET. |
| |
| This gives information about a cpu unit conflicts. We fill a |
| struct excl_rel_decl (excl) with information used later by |
| `expand_automata'. */ |
| static void |
| gen_excl_set (md_rtx_info *info) |
| { |
| decl_t decl; |
| char **first_str_cpu_units; |
| char **second_str_cpu_units; |
| int first_vect_length; |
| int length; |
| int i; |
| |
| rtx def = info->def; |
| first_str_cpu_units |
| = get_str_vect (XSTR (def, 0), &first_vect_length, ',', FALSE); |
| if (first_str_cpu_units == NULL) |
| fatal_at (info->loc, "invalid string `%s' in %s", |
| XSTR (def, 0), GET_RTX_NAME (GET_CODE (def))); |
| second_str_cpu_units = get_str_vect (XSTR (def, 1), &length, ',', |
| FALSE); |
| if (second_str_cpu_units == NULL) |
| fatal_at (info->loc, "invalid string `%s' in %s", |
| XSTR (def, 1), GET_RTX_NAME (GET_CODE (def))); |
| length += first_vect_length; |
| decl = XCREATENODEVAR (struct decl, (sizeof (struct decl) |
| + (length - 1) * sizeof (char *))); |
| decl->mode = dm_excl; |
| decl->pos = 0; |
| DECL_EXCL (decl)->all_names_num = length; |
| DECL_EXCL (decl)->first_list_length = first_vect_length; |
| for (i = 0; i < length; i++) |
| if (i < first_vect_length) |
| DECL_EXCL (decl)->names [i] = first_str_cpu_units [i]; |
| else |
| DECL_EXCL (decl)->names [i] |
| = second_str_cpu_units [i - first_vect_length]; |
| decls.safe_push (decl); |
| } |
| |
| /* Process a PRESENCE_SET, a FINAL_PRESENCE_SET, an ABSENCE_SET, |
| FINAL_ABSENCE_SET (it is depended on PRESENCE_P and FINAL_P). |
| |
| This gives information about a cpu unit reservation requirements. |
| We fill a struct unit_pattern_rel_decl with information used later |
| by `expand_automata'. */ |
| static void |
| gen_presence_absence_set (md_rtx_info *info, int presence_p, int final_p) |
| { |
| decl_t decl; |
| char **str_cpu_units; |
| char **str_pattern_lists; |
| char ***str_patterns; |
| int cpu_units_length; |
| int length; |
| int patterns_length; |
| int i; |
| |
| rtx def = info->def; |
| str_cpu_units = get_str_vect (XSTR (def, 0), &cpu_units_length, ',', |
| FALSE); |
| if (str_cpu_units == NULL) |
| fatal_at (info->loc, "invalid string `%s' in %s", |
| XSTR (def, 0), GET_RTX_NAME (GET_CODE (def))); |
| str_pattern_lists = get_str_vect (XSTR (def, 1), |
| &patterns_length, ',', FALSE); |
| if (str_pattern_lists == NULL) |
| fatal_at (info->loc, "invalid string `%s' in %s", |
| XSTR (def, 1), GET_RTX_NAME (GET_CODE (def))); |
| str_patterns = XOBNEWVEC (&irp, char **, patterns_length); |
| for (i = 0; i < patterns_length; i++) |
| { |
| str_patterns [i] = get_str_vect (str_pattern_lists [i], |
| &length, ' ', FALSE); |
| gcc_assert (str_patterns [i]); |
| } |
| decl = XCREATENODE (struct decl); |
| decl->pos = 0; |
| if (presence_p) |
| { |
| decl->mode = dm_presence; |
| DECL_PRESENCE (decl)->names_num = cpu_units_length; |
| DECL_PRESENCE (decl)->names = str_cpu_units; |
| DECL_PRESENCE (decl)->patterns = str_patterns; |
| DECL_PRESENCE (decl)->patterns_num = patterns_length; |
| DECL_PRESENCE (decl)->final_p = final_p; |
| } |
| else |
| { |
| decl->mode = dm_absence; |
| DECL_ABSENCE (decl)->names_num = cpu_units_length; |
| DECL_ABSENCE (decl)->names = str_cpu_units; |
| DECL_ABSENCE (decl)->patterns = str_patterns; |
| DECL_ABSENCE (decl)->patterns_num = patterns_length; |
| DECL_ABSENCE (decl)->final_p = final_p; |
| } |
| decls.safe_push (decl); |
| } |
| |
| /* Process a PRESENCE_SET. |
| |
| This gives information about a cpu unit reservation requirements. |
| We fill a struct unit_pattern_rel_decl (presence) with information |
| used later by `expand_automata'. */ |
| static void |
| gen_presence_set (md_rtx_info *info) |
| { |
| gen_presence_absence_set (info, TRUE, FALSE); |
| } |
| |
| /* Process a FINAL_PRESENCE_SET. |
| |
| This gives information about a cpu unit reservation requirements. |
| We fill a struct unit_pattern_rel_decl (presence) with information |
| used later by `expand_automata'. */ |
| static void |
| gen_final_presence_set (md_rtx_info *info) |
| { |
| gen_presence_absence_set (info, TRUE, TRUE); |
| } |
| |
| /* Process an ABSENCE_SET. |
| |
| This gives information about a cpu unit reservation requirements. |
| We fill a struct unit_pattern_rel_decl (absence) with information |
| used later by `expand_automata'. */ |
| static void |
| gen_absence_set (md_rtx_info *info) |
| { |
| gen_presence_absence_set (info, FALSE, FALSE); |
| } |
| |
| /* Process a FINAL_ABSENCE_SET. |
| |
| This gives information about a cpu unit reservation requirements. |
| We fill a struct unit_pattern_rel_decl (absence) with information |
| used later by `expand_automata'. */ |
| static void |
| gen_final_absence_set (md_rtx_info *info) |
| { |
| gen_presence_absence_set (info, FALSE, TRUE); |
| } |
| |
| /* Process a DEFINE_AUTOMATON. |
| |
| This gives information about a finite state automaton used for |
| recognizing pipeline hazards. We fill a struct automaton_decl |
| with information used later by `expand_automata'. */ |
| static void |
| gen_automaton (md_rtx_info *info) |
| { |
| decl_t decl; |
| char **str_automata; |
| int vect_length; |
| int i; |
| |
| rtx def = info->def; |
| str_automata = get_str_vect (XSTR (def, 0), &vect_length, ',', FALSE); |
| if (str_automata == NULL) |
| fatal_at (info->loc, "invalid string `%s' in %s", |
| XSTR (def, 0), GET_RTX_NAME (GET_CODE (def))); |
| for (i = 0; i < vect_length; i++) |
| { |
| decl = XCREATENODE (struct decl); |
| decl->mode = dm_automaton; |
| decl->pos = 0; |
| DECL_AUTOMATON (decl)->name = check_name (str_automata [i], decl->pos); |
| decls.safe_push (decl); |
| } |
| } |
| |
| /* Process an AUTOMATA_OPTION. |
| |
| This gives information how to generate finite state automaton used |
| for recognizing pipeline hazards. */ |
| static void |
| gen_automata_option (md_rtx_info *info) |
| { |
| const char *option = XSTR (info->def, 0); |
| if (strcmp (option, NO_MINIMIZATION_OPTION + 1) == 0) |
| no_minimization_flag = 1; |
| else if (strcmp (option, TIME_OPTION + 1) == 0) |
| time_flag = 1; |
| else if (strcmp (option, STATS_OPTION + 1) == 0) |
| stats_flag = 1; |
| else if (strcmp (option, V_OPTION + 1) == 0) |
| v_flag = 1; |
| else if (strcmp (option, W_OPTION + 1) == 0) |
| w_flag = 1; |
| else if (strcmp (option, NDFA_OPTION + 1) == 0) |
| ndfa_flag = 1; |
| else if (strcmp (option, COLLAPSE_OPTION + 1) == 0) |
| collapse_flag = 1; |
| else if (strcmp (option, NO_COMB_OPTION + 1) == 0) |
| no_comb_flag = 1; |
| else if (strcmp (option, PROGRESS_OPTION + 1) == 0) |
| progress_flag = 1; |
| else |
| fatal_at (info->loc, "invalid option `%s' in %s", |
| option, GET_RTX_NAME (GET_CODE (info->def))); |
| } |
| |
| /* Name in reservation to denote absence reservation. */ |
| #define NOTHING_NAME "nothing" |
| |
| /* The following string contains original reservation string being |
| parsed. */ |
| static const char *reserv_str; |
| |
| /* Parse an element in STR. */ |
| static regexp_t |
| gen_regexp_el (const char *str) |
| { |
| regexp_t regexp; |
| char *dstr; |
| int len; |
| |
| if (*str == '(') |
| { |
| len = strlen (str); |
| if (str [len - 1] != ')') |
| fatal ("garbage after ) in reservation `%s'", reserv_str); |
| dstr = XALLOCAVAR (char, len - 1); |
| memcpy (dstr, str + 1, len - 2); |
| dstr [len-2] = '\0'; |
| regexp = gen_regexp_sequence (dstr); |
| } |
| else if (strcmp (str, NOTHING_NAME) == 0) |
| { |
| regexp = XCREATENODE (struct regexp); |
| regexp->mode = rm_nothing; |
| } |
| else |
| { |
| regexp = XCREATENODE (struct regexp); |
| regexp->mode = rm_unit; |
| REGEXP_UNIT (regexp)->name = str; |
| } |
| return regexp; |
| } |
| |
| /* Parse construction `repeat' in STR. */ |
| static regexp_t |
| gen_regexp_repeat (const char *str) |
| { |
| regexp_t regexp; |
| regexp_t repeat; |
| char **repeat_vect; |
| int els_num; |
| int i; |
| |
| repeat_vect = get_str_vect (str, &els_num, '*', TRUE); |
| if (repeat_vect == NULL) |
| fatal ("invalid `%s' in reservation `%s'", str, reserv_str); |
| if (els_num > 1) |
| { |
| regexp = gen_regexp_el (repeat_vect [0]); |
| for (i = 1; i < els_num; i++) |
| { |
| repeat = XCREATENODE (struct regexp); |
| repeat->mode = rm_repeat; |
| REGEXP_REPEAT (repeat)->regexp = regexp; |
| REGEXP_REPEAT (repeat)->repeat_num = atoi (repeat_vect [i]); |
| if (REGEXP_REPEAT (repeat)->repeat_num <= 1) |
| fatal ("repetition `%s' <= 1 in reservation `%s'", |
| str, reserv_str); |
| regexp = repeat; |
| } |
| return regexp; |
| } |
| else |
| return gen_regexp_el (repeat_vect[0]); |
| } |
| |
| /* Parse reservation STR which possibly contains separator '+'. */ |
| static regexp_t |
| gen_regexp_allof (const char *str) |
| { |
| regexp_t allof; |
| char **allof_vect; |
| int els_num; |
| int i; |
| |
| allof_vect = get_str_vect (str, &els_num, '+', TRUE); |
| if (allof_vect == NULL) |
| fatal ("invalid `%s' in reservation `%s'", str, reserv_str); |
| if (els_num > 1) |
| { |
| allof = XCREATENODEVAR (struct regexp, sizeof (struct regexp) |
| + sizeof (regexp_t) * (els_num - 1)); |
| allof->mode = rm_allof; |
| REGEXP_ALLOF (allof)->regexps_num = els_num; |
| for (i = 0; i < els_num; i++) |
| REGEXP_ALLOF (allof)->regexps [i] = gen_regexp_repeat (allof_vect [i]); |
| return allof; |
| } |
| else |
| return gen_regexp_repeat (allof_vect[0]); |
| } |
| |
| /* Parse reservation STR which possibly contains separator '|'. */ |
| static regexp_t |
| gen_regexp_oneof (const char *str) |
| { |
| regexp_t oneof; |
| char **oneof_vect; |
| int els_num; |
| int i; |
| |
| oneof_vect = get_str_vect (str, &els_num, '|', TRUE); |
| if (oneof_vect == NULL) |
| fatal ("invalid `%s' in reservation `%s'", str, reserv_str); |
| if (els_num > 1) |
| { |
| oneof = XCREATENODEVAR (struct regexp, sizeof (struct regexp) |
| + sizeof (regexp_t) * (els_num - 1)); |
| oneof->mode = rm_oneof; |
| REGEXP_ONEOF (oneof)->regexps_num = els_num; |
| for (i = 0; i < els_num; i++) |
| REGEXP_ONEOF (oneof)->regexps [i] = gen_regexp_allof (oneof_vect [i]); |
| return oneof; |
| } |
| else |
| return gen_regexp_allof (oneof_vect[0]); |
| } |
| |
| /* Parse reservation STR which possibly contains separator ','. */ |
| static regexp_t |
| gen_regexp_sequence (const char *str) |
| { |
| regexp_t sequence; |
| char **sequence_vect; |
| int els_num; |
| int i; |
| |
| sequence_vect = get_str_vect (str, &els_num, ',', TRUE); |
| if (els_num == -1) |
| fatal ("unbalanced parentheses in reservation `%s'", str); |
| if (sequence_vect == NULL) |
| fatal ("invalid reservation `%s'", str); |
| if (els_num > 1) |
| { |
| sequence = XCREATENODEVAR (struct regexp, sizeof (struct regexp) |
| + sizeof (regexp_t) * (els_num - 1)); |
| sequence->mode = rm_sequence; |
| REGEXP_SEQUENCE (sequence)->regexps_num = els_num; |
| for (i = 0; i < els_num; i++) |
| REGEXP_SEQUENCE (sequence)->regexps [i] |
| = gen_regexp_oneof (sequence_vect [i]); |
| return sequence; |
| } |
| else |
| return gen_regexp_oneof (sequence_vect[0]); |
| } |
| |
| /* Parse construction reservation STR. */ |
| static regexp_t |
| gen_regexp (const char *str) |
| { |
| reserv_str = str; |
| return gen_regexp_sequence (str); |
| } |
| |
| /* Process a DEFINE_RESERVATION. |
| |
| This gives information about a reservation of cpu units. We fill |
| in a struct reserv_decl with information used later by |
| `expand_automata'. */ |
| static void |
| gen_reserv (md_rtx_info *info) |
| { |
| decl_t decl; |
| |
| rtx def = info->def; |
| decl = XCREATENODE (struct decl); |
| decl->mode = dm_reserv; |
| decl->pos = 0; |
| DECL_RESERV (decl)->name = check_name (XSTR (def, 0), decl->pos); |
| DECL_RESERV (decl)->regexp = gen_regexp (XSTR (def, 1)); |
| decls.safe_push (decl); |
| } |
| |
| /* Process a DEFINE_INSN_RESERVATION. |
| |
| This gives information about the reservation of cpu units by an |
| insn. We fill a struct insn_reserv_decl with information used |
| later by `expand_automata'. */ |
| static void |
| gen_insn_reserv (md_rtx_info *info) |
| { |
| decl_t decl; |
| |
| rtx def = info->def; |
| decl = XCREATENODE (struct decl); |
| decl->mode = dm_insn_reserv; |
| decl->pos = 0; |
| DECL_INSN_RESERV (decl)->name |
| = check_name (XSTR (def, 0), decl->pos); |
| DECL_INSN_RESERV (decl)->default_latency = XINT (def, 1); |
| DECL_INSN_RESERV (decl)->condexp = XEXP (def, 2); |
| DECL_INSN_RESERV (decl)->regexp = gen_regexp (XSTR (def, 3)); |
| decls.safe_push (decl); |
| } |
| |
| |
| |
| /* The function evaluates hash value (0..UINT_MAX) of string. */ |
| static unsigned |
| string_hash (const char *string) |
| { |
| unsigned result, i; |
| |
| for (result = i = 0;*string++ != '\0'; i++) |
| result += ((unsigned char) *string << (i % CHAR_BIT)); |
| return result; |
| } |
| |
| |
| |
| /* This page contains abstract data `table of automaton declarations'. |
| Elements of the table is nodes representing automaton declarations. |
| Key of the table elements is name of given automaton. Remember |
| that automaton names have own space. */ |
| |
| /* The function evaluates hash value of an automaton declaration. The |
| function is used by abstract data `hashtab'. The function returns |
| hash value (0..UINT_MAX) of given automaton declaration. */ |
| static hashval_t |
| automaton_decl_hash (const void *automaton_decl) |
| { |
| const_decl_t const decl = (const_decl_t) automaton_decl; |
| |
| gcc_assert (decl->mode != dm_automaton |
| || DECL_AUTOMATON (decl)->name); |
| return string_hash (DECL_AUTOMATON (decl)->name); |
| } |
| |
| /* The function tests automaton declarations on equality of their |
| keys. The function is used by abstract data `hashtab'. The |
| function returns 1 if the declarations have the same key, 0 |
| otherwise. */ |
| static int |
| automaton_decl_eq_p (const void* automaton_decl_1, |
| const void* automaton_decl_2) |
| { |
| const_decl_t const decl1 = (const_decl_t) automaton_decl_1; |
| const_decl_t const decl2 = (const_decl_t) automaton_decl_2; |
| |
| gcc_assert (decl1->mode == dm_automaton |
| && DECL_AUTOMATON (decl1)->name |
| && decl2->mode == dm_automaton |
| && DECL_AUTOMATON (decl2)->name); |
| return strcmp (DECL_AUTOMATON (decl1)->name, |
| DECL_AUTOMATON (decl2)->name) == 0; |
| } |
| |
| /* The automaton declaration table itself is represented by the |
| following variable. */ |
| static htab_t automaton_decl_table; |
| |
| /* The function inserts automaton declaration into the table. The |
| function does nothing if an automaton declaration with the same key |
| exists already in the table. The function returns automaton |
| declaration node in the table with the same key as given automaton |
| declaration node. */ |
| static decl_t |
| insert_automaton_decl (decl_t automaton_decl) |
| { |
| void **entry_ptr; |
| |
| entry_ptr = htab_find_slot (automaton_decl_table, automaton_decl, INSERT); |
| if (*entry_ptr == NULL) |
| *entry_ptr = (void *) automaton_decl; |
| return (decl_t) *entry_ptr; |
| } |
| |
| /* The following variable value is node representing automaton |
| declaration. The node used for searching automaton declaration |
| with given name. */ |
| static struct decl work_automaton_decl; |
| |
| /* The function searches for automaton declaration in the table with |
| the same key as node representing name of the automaton |
| declaration. The function returns node found in the table, NULL if |
| such node does not exist in the table. */ |
| static decl_t |
| find_automaton_decl (const char *name) |
| { |
| void *entry; |
| |
| work_automaton_decl.mode = dm_automaton; |
| DECL_AUTOMATON (&work_automaton_decl)->name = name; |
| entry = htab_find (automaton_decl_table, &work_automaton_decl); |
| return (decl_t) entry; |
| } |
| |
| /* The function creates empty automaton declaration table and node |
| representing automaton declaration and used for searching automaton |
| declaration with given name. The function must be called only once |
| before any work with the automaton declaration table. */ |
| static void |
| initiate_automaton_decl_table (void) |
| { |
| work_automaton_decl.mode = dm_automaton; |
| automaton_decl_table = htab_create (10, automaton_decl_hash, |
| automaton_decl_eq_p, (htab_del) 0); |
| } |
| |
| /* The function deletes the automaton declaration table. Only call of |
| function `initiate_automaton_decl_table' is possible immediately |
| after this function call. */ |
| static void |
| finish_automaton_decl_table (void) |
| { |
| htab_delete (automaton_decl_table); |
| } |
| |
| |
| |
| /* This page contains abstract data `table of insn declarations'. |
| Elements of the table is nodes representing insn declarations. Key |
| of the table elements is name of given insn (in corresponding |
| define_insn_reservation). Remember that insn names have own |
| space. */ |
| |
| /* The function evaluates hash value of an insn declaration. The |
| function is used by abstract data `hashtab'. The function returns |
| hash value (0..UINT_MAX) of given insn declaration. */ |
| static hashval_t |
| insn_decl_hash (const void *insn_decl) |
| { |
| const_decl_t const decl = (const_decl_t) insn_decl; |
| |
| gcc_assert (decl->mode == dm_insn_reserv |
| && DECL_INSN_RESERV (decl)->name); |
| return string_hash (DECL_INSN_RESERV (decl)->name); |
| } |
| |
| /* The function tests insn declarations on equality of their keys. |
| The function is used by abstract data `hashtab'. The function |
| returns 1 if declarations have the same key, 0 otherwise. */ |
| static int |
| insn_decl_eq_p (const void *insn_decl_1, const void *insn_decl_2) |
| { |
| const_decl_t const decl1 = (const_decl_t) insn_decl_1; |
| const_decl_t const decl2 = (const_decl_t) insn_decl_2; |
| |
| gcc_assert (decl1->mode == dm_insn_reserv |
| && DECL_INSN_RESERV (decl1)->name |
| && decl2->mode == dm_insn_reserv |
| && DECL_INSN_RESERV (decl2)->name); |
| return strcmp (DECL_INSN_RESERV (decl1)->name, |
| DECL_INSN_RESERV (decl2)->name) == 0; |
| } |
| |
| /* The insn declaration table itself is represented by the following |
| variable. The table does not contain insn reservation |
| declarations. */ |
| static htab_t insn_decl_table; |
| |
| /* The function inserts insn declaration into the table. The function |
| does nothing if an insn declaration with the same key exists |
| already in the table. The function returns insn declaration node |
| in the table with the same key as given insn declaration node. */ |
| static decl_t |
| insert_insn_decl (decl_t insn_decl) |
| { |
| void **entry_ptr; |
| |
| entry_ptr = htab_find_slot (insn_decl_table, insn_decl, INSERT); |
| if (*entry_ptr == NULL) |
| *entry_ptr = (void *) insn_decl; |
| return (decl_t) *entry_ptr; |
| } |
| |
| /* The following variable value is node representing insn reservation |
| declaration. The node used for searching insn reservation |
| declaration with given name. */ |
| static struct decl work_insn_decl; |
| |
| /* The function searches for insn reservation declaration in the table |
| with the same key as node representing name of the insn reservation |
| declaration. The function returns node found in the table, NULL if |
| such node does not exist in the table. */ |
| static decl_t |
| find_insn_decl (const char *name) |
| { |
| void *entry; |
| |
| work_insn_decl.mode = dm_insn_reserv; |
| DECL_INSN_RESERV (&work_insn_decl)->name = name; |
| entry = htab_find (insn_decl_table, &work_insn_decl); |
| return (decl_t) entry; |
| } |
| |
| /* The function creates empty insn declaration table and node |
| representing insn declaration and used for searching insn |
| declaration with given name. The function must be called only once |
| before any work with the insn declaration table. */ |
| static void |
| initiate_insn_decl_table (void) |
| { |
| work_insn_decl.mode = dm_insn_reserv; |
| insn_decl_table = htab_create (10, insn_decl_hash, insn_decl_eq_p, |
| (htab_del) 0); |
| } |
| |
| /* The function deletes the insn declaration table. Only call of |
| function `initiate_insn_decl_table' is possible immediately after |
| this function call. */ |
| static void |
| finish_insn_decl_table (void) |
| { |
| htab_delete (insn_decl_table); |
| } |
| |
| |
| |
| /* This page contains abstract data `table of declarations'. Elements |
| of the table is nodes representing declarations (of units and |
| reservations). Key of the table elements is names of given |
| declarations. */ |
| |
| /* The function evaluates hash value of a declaration. The function |
| is used by abstract data `hashtab'. The function returns hash |
| value (0..UINT_MAX) of given declaration. */ |
| static hashval_t |
| decl_hash (const void *decl) |
| { |
| const_decl_t const d = (const_decl_t) decl; |
| |
| gcc_assert ((d->mode == dm_unit && DECL_UNIT (d)->name) |
| || (d->mode == dm_reserv && DECL_RESERV (d)->name)); |
| return string_hash (d->mode == dm_unit |
| ? DECL_UNIT (d)->name : DECL_RESERV (d)->name); |
| } |
| |
| /* The function tests declarations on equality of their keys. The |
| function is used by abstract data 'hashtab'. The function |
| returns 1 if the declarations have the same key, 0 otherwise. */ |
| static int |
| decl_eq_p (const void *decl_1, const void *decl_2) |
| { |
| const_decl_t const d1 = (const_decl_t) decl_1; |
| const_decl_t const d2 = (const_decl_t) decl_2; |
| |
| gcc_assert ((d1->mode == dm_unit && DECL_UNIT (d1)->name) |
| || (d1->mode == dm_reserv && DECL_RESERV (d1)->name)); |
| gcc_assert ((d2->mode == dm_unit && DECL_UNIT (d2)->name) |
| || (d2->mode == dm_reserv && DECL_RESERV (d2)->name)); |
| return strcmp ((d1->mode == dm_unit |
| ? DECL_UNIT (d1)->name : DECL_RESERV (d1)->name), |
| (d2->mode == dm_unit |
| ? DECL_UNIT (d2)->name : DECL_RESERV (d2)->name)) == 0; |
| } |
| |
| /* The declaration table itself is represented by the following |
| variable. */ |
| static htab_t decl_table; |
| |
| /* The function inserts declaration into the table. The function does |
| nothing if a declaration with the same key exists already in the |
| table. The function returns declaration node in the table with the |
| same key as given declaration node. */ |
| |
| static decl_t |
| insert_decl (decl_t decl) |
| { |
| void **entry_ptr; |
| |
| entry_ptr = htab_find_slot (decl_table, decl, INSERT); |
| if (*entry_ptr == NULL) |
| *entry_ptr = (void *) decl; |
| return (decl_t) *entry_ptr; |
| } |
| |
| /* The following variable value is node representing declaration. The |
| node used for searching declaration with given name. */ |
| static struct decl work_decl; |
| |
| /* The function searches for declaration in the table with the same |
| key as node representing name of the declaration. The function |
| returns node found in the table, NULL if such node does not exist |
| in the table. */ |
| static decl_t |
| find_decl (const char *name) |
| { |
| void *entry; |
| |
| work_decl.mode = dm_unit; |
| DECL_UNIT (&work_decl)->name = name; |
| entry = htab_find (decl_table, &work_decl); |
| return (decl_t) entry; |
| } |
| |
| /* The function creates empty declaration table and node representing |
| declaration and used for searching declaration with given name. |
| The function must be called only once before any work with the |
| declaration table. */ |
| static void |
| initiate_decl_table (void) |
| { |
| work_decl.mode = dm_unit; |
| decl_table = htab_create (10, decl_hash, decl_eq_p, (htab_del) 0); |
| } |
| |
| /* The function deletes the declaration table. Only call of function |
| `initiate_declaration_table' is possible immediately after this |
| function call. */ |
| static void |
| finish_decl_table (void) |
| { |
| htab_delete (decl_table); |
| } |
| |
| |
| |
| /* This page contains checker of pipeline hazard description. */ |
| |
| /* Checking NAMES in an exclusion clause vector and returning formed |
| unit_set_el_list. */ |
| static unit_set_el_t |
| process_excls (char **names, int num, pos_t excl_pos ATTRIBUTE_UNUSED) |
| { |
| unit_set_el_t el_list; |
| unit_set_el_t last_el; |
| unit_set_el_t new_el; |
| decl_t decl_in_table; |
| int i; |
| |
| el_list = NULL; |
| last_el = NULL; |
| for (i = 0; i < num; i++) |
| { |
| decl_in_table = find_decl (names [i]); |
| if (decl_in_table == NULL) |
| error ("unit `%s' in exclusion is not declared", names [i]); |
| else if (decl_in_table->mode != dm_unit) |
| error ("`%s' in exclusion is not unit", names [i]); |
| else |
| { |
| new_el = XCREATENODE (struct unit_set_el); |
| new_el->unit_decl = DECL_UNIT (decl_in_table); |
| new_el->next_unit_set_el = NULL; |
| if (last_el == NULL) |
| el_list = last_el = new_el; |
| else |
| { |
| last_el->next_unit_set_el = new_el; |
| last_el = last_el->next_unit_set_el; |
| } |
| } |
| } |
| return el_list; |
| } |
| |
| /* The function adds each element from SOURCE_LIST to the exclusion |
| list of the each element from DEST_LIST. Checking situation "unit |
| excludes itself". */ |
| static void |
| add_excls (unit_set_el_t dest_list, unit_set_el_t source_list, |
| pos_t excl_pos ATTRIBUTE_UNUSED) |
| { |
| unit_set_el_t dst; |
| unit_set_el_t src; |
| unit_set_el_t curr_el; |
| unit_set_el_t prev_el; |
| unit_set_el_t copy; |
| |
| for (dst = dest_list; dst != NULL; dst = dst->next_unit_set_el) |
| for (src = source_list; src != NULL; src = src->next_unit_set_el) |
| { |
| if (dst->unit_decl == src->unit_decl) |
| { |
| error ("unit `%s' excludes itself", src->unit_decl->name); |
| continue; |
| } |
| if (dst->unit_decl->automaton_name != NULL |
| && src->unit_decl->automaton_name != NULL |
| && strcmp (dst->unit_decl->automaton_name, |
| src->unit_decl->automaton_name) != 0) |
| { |
| error ("units `%s' and `%s' in exclusion set belong to different automata", |
| src->unit_decl->name, dst->unit_decl->name); |
| continue; |
| } |
| for (curr_el = dst->unit_decl->excl_list, prev_el = NULL; |
| curr_el != NULL; |
| prev_el = curr_el, curr_el = curr_el->next_unit_set_el) |
| if (curr_el->unit_decl == src->unit_decl) |
| break; |
| if (curr_el == NULL) |
| { |
| /* Element not found - insert. */ |
| copy = XCOPYNODE (struct unit_set_el, src); |
| copy->next_unit_set_el = NULL; |
| if (prev_el == NULL) |
| dst->unit_decl->excl_list = copy; |
| else |
| prev_el->next_unit_set_el = copy; |
| } |
| } |
| } |
| |
| /* Checking NAMES in presence/absence clause and returning the |
| formed unit_set_el_list. The function is called only after |
| processing all exclusion sets. */ |
| static unit_set_el_t |
| process_presence_absence_names (char **names, int num, |
| pos_t req_pos ATTRIBUTE_UNUSED, |
| int presence_p, int final_p) |
| { |
| unit_set_el_t el_list; |
| unit_set_el_t last_el; |
| unit_set_el_t new_el; |
| decl_t decl_in_table; |
| int i; |
| |
| el_list = NULL; |
| last_el = NULL; |
| for (i = 0; i < num; i++) |
| { |
| decl_in_table = find_decl (names [i]); |
| if (decl_in_table == NULL) |
| error ((presence_p |
| ? (final_p |
| ? "unit `%s' in final presence set is not declared" |
| : "unit `%s' in presence set is not declared") |
| : (final_p |
| ? "unit `%s' in final absence set is not declared" |
| : "unit `%s' in absence set is not declared")), names [i]); |
| else if (decl_in_table->mode != dm_unit) |
| error ((presence_p |
| ? (final_p |
| ? "`%s' in final presence set is not unit" |
| : "`%s' in presence set is not unit") |
| : (final_p |
| ? "`%s' in final absence set is not unit" |
| : "`%s' in absence set is not unit")), names [i]); |
| else |
| { |
| new_el = XCREATENODE (struct unit_set_el); |
| new_el->unit_decl = DECL_UNIT (decl_in_table); |
| new_el->next_unit_set_el = NULL; |
| if (last_el == NULL) |
| el_list = last_el = new_el; |
| else |
| { |
| last_el->next_unit_set_el = new_el; |
| last_el = last_el->next_unit_set_el; |
| } |
| } |
| } |
| return el_list; |
| } |
| |
| /* Checking NAMES in patterns of a presence/absence clause and |
| returning the formed pattern_set_el_list. The function is called |
| only after processing all exclusion sets. */ |
| static pattern_set_el_t |
| process_presence_absence_patterns (char ***patterns, int num, |
| pos_t req_pos ATTRIBUTE_UNUSED, |
| int presence_p, int final_p) |
| { |
| pattern_set_el_t el_list; |
| pattern_set_el_t last_el; |
| pattern_set_el_t new_el; |
| decl_t decl_in_table; |
| int i, j; |
| |
| el_list = NULL; |
| last_el = NULL; |
| for (i = 0; i < num; i++) |
| { |
| for (j = 0; patterns [i] [j] != NULL; j++) |
| ; |
| new_el = XCREATENODEVAR (struct pattern_set_el, |
| sizeof (struct pattern_set_el) |
| + sizeof (struct unit_decl *) * j); |
| new_el->unit_decls |
| = (struct unit_decl **) ((char *) new_el |
| + sizeof (struct pattern_set_el)); |
| new_el->next_pattern_set_el = NULL; |
| if (last_el == NULL) |
| el_list = last_el = new_el; |
| else |
| { |
| last_el->next_pattern_set_el = new_el; |
| last_el = last_el->next_pattern_set_el; |
| } |
| new_el->units_num = 0; |
| for (j = 0; patterns [i] [j] != NULL; j++) |
| { |
| decl_in_table = find_decl (patterns [i] [j]); |
| if (decl_in_table == NULL) |
| error ((presence_p |
| ? (final_p |
| ? "unit `%s' in final presence set is not declared" |
| : "unit `%s' in presence set is not declared") |
| : (final_p |
| ? "unit `%s' in final absence set is not declared" |
| : "unit `%s' in absence set is not declared")), |
| patterns [i] [j]); |
| else if (decl_in_table->mode != dm_unit) |
| error ((presence_p |
| ? (final_p |
| ? "`%s' in final presence set is not unit" |
| : "`%s' in presence set is not unit") |
| : (final_p |
| ? "`%s' in final absence set is not unit" |
| : "`%s' in absence set is not unit")), |
| patterns [i] [j]); |
| else |
| { |
| new_el->unit_decls [new_el->units_num] |
| = DECL_UNIT (decl_in_table); |
| new_el->units_num++; |
| } |
| } |
| } |
| return el_list; |
| } |
| |
| /* The function adds each element from PATTERN_LIST to presence (if |
| PRESENCE_P) or absence list of the each element from DEST_LIST. |
| Checking situations "unit requires own absence", and "unit excludes |
| and requires presence of ...", "unit requires absence and presence |
| of ...", "units in (final) presence set belong to different |
| automata", and "units in (final) absence set belong to different |
| automata". Remember that we process absence sets only after all |
| presence sets. */ |
| static void |
| add_presence_absence (unit_set_el_t dest_list, |
| pattern_set_el_t pattern_list, |
| pos_t req_pos ATTRIBUTE_UNUSED, |
| int presence_p, int final_p) |
| { |
| unit_set_el_t dst; |
| pattern_set_el_t pat; |
| struct unit_decl *unit; |
| unit_set_el_t curr_excl_el; |
| pattern_set_el_t curr_pat_el; |
| pattern_set_el_t prev_el; |
| pattern_set_el_t copy; |
| int i; |
| int no_error_flag; |
| |
| for (dst = dest_list; dst != NULL; dst = dst->next_unit_set_el) |
| for (pat = pattern_list; pat != NULL; pat = pat->next_pattern_set_el) |
| { |
| for (i = 0; i < pat->units_num; i++) |
| { |
| unit = pat->unit_decls [i]; |
| if (dst->unit_decl == unit && pat->units_num == 1 && !presence_p) |
| { |
| error ("unit `%s' requires own absence", unit->name); |
| continue; |
| } |
| if (dst->unit_decl->automaton_name != NULL |
| && unit->automaton_name != NULL |
| && strcmp (dst->unit_decl->automaton_name, |
| unit->automaton_name) != 0) |
| { |
| error ((presence_p |
| ? (final_p |
| ? "units `%s' and `%s' in final presence set belong to different automata" |
| : "units `%s' and `%s' in presence set belong to different automata") |
| : (final_p |
| ? "units `%s' and `%s' in final absence set belong to different automata" |
| : "units `%s' and `%s' in absence set belong to different automata")), |
| unit->name, dst->unit_decl->name); |
| continue; |
| } |
| no_error_flag = 1; |
| if (presence_p) |
| for (curr_excl_el = dst->unit_decl->excl_list; |
| curr_excl_el != NULL; |
| curr_excl_el = curr_excl_el->next_unit_set_el) |
| { |
| if (unit == curr_excl_el->unit_decl && pat->units_num == 1) |
| { |
| if (!w_flag) |
| { |
| error ("unit `%s' excludes and requires presence of `%s'", |
| dst->unit_decl->name, unit->name); |
| no_error_flag = 0; |
| } |
| else |
| warning ("unit `%s' excludes and requires presence of `%s'", |
| dst->unit_decl->name, unit->name); |
| } |
| } |
| else if (pat->units_num == 1) |
| for (curr_pat_el = dst->unit_decl->presence_list; |
| curr_pat_el != NULL; |
| curr_pat_el = curr_pat_el->next_pattern_set_el) |
| if (curr_pat_el->units_num == 1 |
| && unit == curr_pat_el->unit_decls [0]) |
| { |
| if (!w_flag) |
| { |
| error ("unit `%s' requires absence and presence of `%s'", |
| dst->unit_decl->name, unit->name); |
| no_error_flag = 0; |
| } |
| else |
| warning ("unit `%s' requires absence and presence of `%s'", |
| dst->unit_decl->name, unit->name); |
| } |
| if (no_error_flag) |
| { |
| for (prev_el = (presence_p |
| ? (final_p |
| ? dst->unit_decl->final_presence_list |
| : dst->unit_decl->presence_list) |
| : (final_p |
| ? dst->unit_decl->final_absence_list |
| : dst->unit_decl->absence_list)); |
| prev_el != NULL && prev_el->next_pattern_set_el != NULL; |
| prev_el = prev_el->next_pattern_set_el) |
| ; |
| copy = XCOPYNODE (struct pattern_set_el, pat); |
| copy->next_pattern_set_el = NULL; |
| if (prev_el == NULL) |
| { |
| if (presence_p) |
| { |
| if (final_p) |
| dst->unit_decl->final_presence_list = copy; |
| else |
| dst->unit_decl->presence_list = copy; |
| } |
| else if (final_p) |
| dst->unit_decl->final_absence_list = copy; |
| else |
| dst->unit_decl->absence_list = copy; |
| } |
| else |
| prev_el->next_pattern_set_el = copy; |
| } |
| } |
| } |
| } |
| |
| |
| /* The function inserts BYPASS in the list of bypasses of the |
| corresponding output insn. The order of bypasses in the list is |
| described in a comment for member `bypass_list' (see above). If |
| there is already the same bypass in the list the function reports |
| this and does nothing. */ |
| static void |
| insert_bypass (struct bypass_decl *bypass) |
| { |
| struct bypass_decl *curr, *last; |
| struct insn_reserv_decl *out_insn_reserv = bypass->out_insn_reserv; |
| struct insn_reserv_decl *in_insn_reserv = bypass->in_insn_reserv; |
| |
| for (curr = out_insn_reserv->bypass_list, last = NULL; |
| curr != NULL; |
| last = curr, curr = curr->next) |
| if (curr->in_insn_reserv == in_insn_reserv) |
| { |
| if ((bypass->bypass_guard_name != NULL |
| && curr->bypass_guard_name != NULL |
| && ! strcmp (bypass->bypass_guard_name, curr->bypass_guard_name)) |
| || bypass->bypass_guard_name == curr->bypass_guard_name) |
| { |
| if (bypass->bypass_guard_name == NULL) |
| { |
| if (!w_flag) |
| error ("the same bypass `%s - %s' is already defined", |
| bypass->out_pattern, bypass->in_pattern); |
| else |
| warning ("the same bypass `%s - %s' is already defined", |
| bypass->out_pattern, bypass->in_pattern); |
| } |
| else if (!w_flag) |
| error ("the same bypass `%s - %s' (guard %s) is already defined", |
| bypass->out_pattern, bypass->in_pattern, |
| bypass->bypass_guard_name); |
| else |
| warning |
| ("the same bypass `%s - %s' (guard %s) is already defined", |
| bypass->out_pattern, bypass->in_pattern, |
| bypass->bypass_guard_name); |
| return; |
| } |
| if (curr->bypass_guard_name == NULL) |
| break; |
| if (curr->next == NULL || curr->next->in_insn_reserv != in_insn_reserv) |
| { |
| last = curr; |
| break; |
| } |
| |
| } |
| if (last == NULL) |
| { |
| bypass->next = out_insn_reserv->bypass_list; |
| out_insn_reserv->bypass_list = bypass; |
| } |
| else |
| { |
| bypass->next = last->next; |
| last->next = bypass; |
| } |
| } |
| |
| /* BYPASS is a define_bypass decl that includes glob pattern PATTERN. |
| Call FN (BYPASS, INSN, DATA) for each matching instruction INSN. */ |
| |
| static void |
| for_each_matching_insn (decl_t bypass, const char *pattern, |
| void (*fn) (decl_t, decl_t, void *), void *data) |
| { |
| decl_t insn_reserv; |
| bool matched_p; |
| int i; |
| |
| matched_p = false; |
| if (strpbrk (pattern, "*?[")) |
| for (i = 0; i < description->decls_num; i++) |
| { |
| insn_reserv = description->decls[i]; |
| if (insn_reserv->mode == dm_insn_reserv |
| && fnmatch (pattern, DECL_INSN_RESERV (insn_reserv)->name, 0) == 0) |
| { |
| fn (bypass, insn_reserv, data); |
| matched_p = true; |
| } |
| } |
| else |
| { |
| insn_reserv = find_insn_decl (pattern); |
| if (insn_reserv) |
| { |
| fn (bypass, insn_reserv, data); |
| matched_p = true; |
| } |
| } |
| if (!matched_p) |
| error ("there is no insn reservation that matches `%s'", pattern); |
| } |
| |
| /* A subroutine of process_bypass that is called for each pair |
| of matching instructions. OUT_INSN_RESERV is the output |
| instruction and DATA is the input instruction. */ |
| |
| static void |
| process_bypass_2 (decl_t model, decl_t out_insn_reserv, void *data) |
| { |
| struct bypass_decl *bypass; |
| decl_t in_insn_reserv; |
| |
| in_insn_reserv = (decl_t) data; |
| if (strcmp (DECL_INSN_RESERV (in_insn_reserv)->name, |
| DECL_BYPASS (model)->in_pattern) == 0 |
| && strcmp (DECL_INSN_RESERV (out_insn_reserv)->name, |
| DECL_BYPASS (model)->out_pattern) == 0) |
| bypass = DECL_BYPASS (model); |
| else |
| { |
| bypass = XCNEW (struct bypass_decl); |
| bypass->latency = DECL_BYPASS (model)->latency; |
| bypass->out_pattern = DECL_INSN_RESERV (out_insn_reserv)->name; |
| bypass->in_pattern = DECL_INSN_RESERV (in_insn_reserv)->name; |
| bypass->bypass_guard_name = DECL_BYPASS (model)->bypass_guard_name; |
| } |
| bypass->out_insn_reserv = DECL_INSN_RESERV (out_insn_reserv); |
| bypass->in_insn_reserv = DECL_INSN_RESERV (in_insn_reserv); |
| insert_bypass (bypass); |
| } |
| |
| /* A subroutine of process_bypass that is called for each input |
| instruction IN_INSN_RESERV. */ |
| |
| static void |
| process_bypass_1 (decl_t bypass, decl_t in_insn_reserv, |
| void *data ATTRIBUTE_UNUSED) |
| { |
| for_each_matching_insn (bypass, DECL_BYPASS (bypass)->out_pattern, |
| process_bypass_2, in_insn_reserv); |
| } |
| |
| /* Process define_bypass decl BYPASS, inserting a bypass for each specific |
| pair of insn reservations. */ |
| |
| static void |
| process_bypass (decl_t bypass) |
| { |
| for_each_matching_insn (bypass, DECL_BYPASS (bypass)->in_pattern, |
| process_bypass_1, NULL); |
| } |
| |
| /* The function processes pipeline description declarations, checks |
| their correctness, and forms exclusion/presence/absence sets. */ |
| static void |
| process_decls (void) |
| { |
| decl_t decl; |
| decl_t automaton_decl; |
| decl_t decl_in_table; |
| int automaton_presence; |
| int i; |
| |
| /* Checking repeated automata declarations. */ |
| automaton_presence = 0; |
| for (i = 0; i < description->decls_num; i++) |
| { |
| decl = description->decls [i]; |
| if (decl->mode == dm_automaton) |
| { |
| automaton_presence = 1; |
| decl_in_table = insert_automaton_decl (decl); |
| if (decl_in_table != decl) |
| { |
| if (!w_flag) |
| error ("repeated declaration of automaton `%s'", |
| DECL_AUTOMATON (decl)->name); |
| else |
| warning ("repeated declaration of automaton `%s'", |
| DECL_AUTOMATON (decl)->name); |
| } |
| } |
| } |
| /* Checking undeclared automata, repeated declarations (except for |
| automata) and correctness of their attributes (insn latency times |
| etc.). */ |
| for (i = 0; i < description->decls_num; i++) |
| { |
| decl = description->decls [i]; |
| if (decl->mode == dm_insn_reserv) |
| { |
| if (DECL_INSN_RESERV (decl)->default_latency < 0) |
| error ("define_insn_reservation `%s' has negative latency time", |
| DECL_INSN_RESERV (decl)->name); |
| DECL_INSN_RESERV (decl)->insn_num = description->insns_num; |
| description->insns_num++; |
| decl_in_table = insert_insn_decl (decl); |
| if (decl_in_table != decl) |
| error ("`%s' is already used as insn reservation name", |
| DECL_INSN_RESERV (decl)->name); |
| } |
| else if (decl->mode == dm_bypass) |
| { |
| if (DECL_BYPASS (decl)->latency < 0) |
| error ("define_bypass `%s - %s' has negative latency time", |
| DECL_BYPASS (decl)->out_pattern, |
| DECL_BYPASS (decl)->in_pattern); |
| } |
| else if (decl->mode == dm_unit || decl->mode == dm_reserv) |
| { |
| if (decl->mode == dm_unit) |
| { |
| DECL_UNIT (decl)->automaton_decl = NULL; |
| if (DECL_UNIT (decl)->automaton_name != NULL) |
| { |
| automaton_decl |
| = find_automaton_decl (DECL_UNIT (decl)->automaton_name); |
| if (automaton_decl == NULL) |
| error ("automaton `%s' is not declared", |
| DECL_UNIT (decl)->automaton_name); |
| else |
| { |
| DECL_AUTOMATON (automaton_decl)->automaton_is_used = 1; |
| DECL_UNIT (decl)->automaton_decl |
| = DECL_AUTOMATON (automaton_decl); |
| } |
| } |
| else if (automaton_presence) |
| error ("define_unit `%s' without automaton when one defined", |
| DECL_UNIT (decl)->name); |
| DECL_UNIT (decl)->unit_num = description->units_num; |
| description->units_num++; |
| if (strcmp (DECL_UNIT (decl)->name, NOTHING_NAME) == 0) |
| { |
| error ("`%s' is declared as cpu unit", NOTHING_NAME); |
| continue; |
| } |
| decl_in_table = find_decl (DECL_UNIT (decl)->name); |
| } |
| else |
| { |
| if (strcmp (DECL_RESERV (decl)->name, NOTHING_NAME) == 0) |
| { |
| error ("`%s' is declared as cpu reservation", NOTHING_NAME); |
| continue; |
| } |
| decl_in_table = find_decl (DECL_RESERV (decl)->name); |
| } |
| if (decl_in_table == NULL) |
| decl_in_table = insert_decl (decl); |
| else |
| { |
| if (decl->mode == dm_unit) |
| error ("repeated declaration of unit `%s'", |
| DECL_UNIT (decl)->name); |
| else |
| error ("repeated declaration of reservation `%s'", |
| DECL_RESERV (decl)->name); |
| } |
| } |
| } |
| /* Check bypasses and form list of bypasses for each (output) |
| insn. */ |
| for (i = 0; i < description->decls_num; i++) |
| { |
| decl = description->decls [i]; |
| if (decl->mode == dm_bypass) |
| process_bypass (decl); |
| } |
| |
| /* Check exclusion set declarations and form exclusion sets. */ |
| for (i = 0; i < description->decls_num; i++) |
| { |
| decl = description->decls [i]; |
| if (decl->mode == dm_excl) |
| { |
| unit_set_el_t unit_set_el_list; |
| unit_set_el_t unit_set_el_list_2; |
| |
| unit_set_el_list |
| = process_excls (DECL_EXCL (decl)->names, |
| DECL_EXCL (decl)->first_list_length, decl->pos); |
| unit_set_el_list_2 |
| = process_excls (&DECL_EXCL (decl)->names |
| [DECL_EXCL (decl)->first_list_length], |
| DECL_EXCL (decl)->all_names_num |
| - DECL_EXCL (decl)->first_list_length, |
| decl->pos); |
| add_excls (unit_set_el_list, unit_set_el_list_2, decl->pos); |
| add_excls (unit_set_el_list_2, unit_set_el_list, decl->pos); |
| } |
| } |
| |
| /* Check presence set declarations and form presence sets. */ |
| for (i = 0; i < description->decls_num; i++) |
| { |
| decl = description->decls [i]; |
| if (decl->mode == dm_presence) |
| { |
| unit_set_el_t unit_set_el_list; |
| pattern_set_el_t pattern_set_el_list; |
| |
| unit_set_el_list |
| = process_presence_absence_names |
| (DECL_PRESENCE (decl)->names, DECL_PRESENCE (decl)->names_num, |
| decl->pos, TRUE, DECL_PRESENCE (decl)->final_p); |
| pattern_set_el_list |
| = process_presence_absence_patterns |
| (DECL_PRESENCE (decl)->patterns, |
| DECL_PRESENCE (decl)->patterns_num, |
| decl->pos, TRUE, DECL_PRESENCE (decl)->final_p); |
| add_presence_absence (unit_set_el_list, pattern_set_el_list, |
| decl->pos, TRUE, |
| DECL_PRESENCE (decl)->final_p); |
| } |
| } |
| |
| /* Check absence set declarations and form absence sets. */ |
| for (i = 0; i < description->decls_num; i++) |
| { |
| decl = description->decls [i]; |
| if (decl->mode == dm_absence) |
| { |
| unit_set_el_t unit_set_el_list; |
| pattern_set_el_t pattern_set_el_list; |
| |
| unit_set_el_list |
| = process_presence_absence_names |
| (DECL_ABSENCE (decl)->names, DECL_ABSENCE (decl)->names_num, |
| decl->pos, FALSE, DECL_ABSENCE (decl)->final_p); |
| pattern_set_el_list |
| = process_presence_absence_patterns |
| (DECL_ABSENCE (decl)->patterns, |
| DECL_ABSENCE (decl)->patterns_num, |
| decl->pos, FALSE, DECL_ABSENCE (decl)->final_p); |
| add_presence_absence (unit_set_el_list, pattern_set_el_list, |
| decl->pos, FALSE, |
| DECL_ABSENCE (decl)->final_p); |
| } |
| } |
| } |
| |
| /* The following function checks that declared automaton is used. If |
| the automaton is not used, the function fixes error/warning. The |
| following function must be called only after `process_decls'. */ |
| static void |
| check_automaton_usage (void) |
| { |
| decl_t decl; |
| int i; |
| |
| for (i = 0; i < description->decls_num; i++) |
| { |
| decl = description->decls [i]; |
| if (decl->mode == dm_automaton |
| && !DECL_AUTOMATON (decl)->automaton_is_used) |
| { |
| if (!w_flag) |
| error ("automaton `%s' is not used", DECL_AUTOMATON (decl)->name); |
| else |
| warning ("automaton `%s' is not used", |
| DECL_AUTOMATON (decl)->name); |
| } |
| } |
| } |
| |
| /* The following recursive function processes all regexp in order to |
| fix usage of units or reservations and to fix errors of undeclared |
| name. The function may change unit_regexp onto reserv_regexp. |
| Remember that reserv_regexp does not exist before the function |
| call. */ |
| static regexp_t |
| process_regexp (regexp_t regexp) |
| { |
| decl_t decl_in_table; |
| regexp_t new_regexp; |
| int i; |
| |
| switch (regexp->mode) |
| { |
| case rm_unit: |
| decl_in_table = find_decl (REGEXP_UNIT (regexp)->name); |
| if (decl_in_table == NULL) |
| error ("undeclared unit or reservation `%s'", |
| REGEXP_UNIT (regexp)->name); |
| else |
| switch (decl_in_table->mode) |
| { |
| case dm_unit: |
| DECL_UNIT (decl_in_table)->unit_is_used = 1; |
| REGEXP_UNIT (regexp)->unit_decl = DECL_UNIT (decl_in_table); |
| break; |
| |
| case dm_reserv: |
| DECL_RESERV (decl_in_table)->reserv_is_used = 1; |
| new_regexp = XCREATENODE (struct regexp); |
| new_regexp->mode = rm_reserv; |
| new_regexp->pos = regexp->pos; |
| REGEXP_RESERV (new_regexp)->name = REGEXP_UNIT (regexp)->name; |
| REGEXP_RESERV (new_regexp)->reserv_decl |
| = DECL_RESERV (decl_in_table); |
| regexp = new_regexp; |
| break; |
| |
| default: |
| gcc_unreachable (); |
| } |
| break; |
| case rm_sequence: |
| for (i = 0; i <REGEXP_SEQUENCE (regexp)->regexps_num; i++) |
| REGEXP_SEQUENCE (regexp)->regexps [i] |
| = process_regexp (REGEXP_SEQUENCE (regexp)->regexps [i]); |
| break; |
| case rm_allof: |
| for (i = 0; i < REGEXP_ALLOF (regexp)->regexps_num; i++) |
| REGEXP_ALLOF (regexp)->regexps [i] |
| = process_regexp (REGEXP_ALLOF (regexp)->regexps [i]); |
| break; |
| case rm_oneof: |
| for (i = 0; i < REGEXP_ONEOF (regexp)->regexps_num; i++) |
| REGEXP_ONEOF (regexp)->regexps [i] |
| = process_regexp (REGEXP_ONEOF (regexp)->regexps [i]); |
| break; |
| case rm_repeat: |
| REGEXP_REPEAT (regexp)->regexp |
| = process_regexp (REGEXP_REPEAT (regexp)->regexp); |
| break; |
| case rm_nothing: |
| break; |
| default: |
| gcc_unreachable (); |
| } |
| return regexp; |
| } |
| |
| /* The following function processes regexp of define_reservation and |
| define_insn_reservation with the aid of function |
| `process_regexp'. */ |
| static void |
| process_regexp_decls (void) |
| { |
| decl_t decl; |
| int i; |
| |
| for (i = 0; i < description->decls_num; i++) |
| { |
| decl = description->decls [i]; |
| if (decl->mode == dm_reserv) |
| DECL_RESERV (decl)->regexp |
| = process_regexp (DECL_RESERV (decl)->regexp); |
| else if (decl->mode == dm_insn_reserv) |
| DECL_INSN_RESERV (decl)->regexp |
| = process_regexp (DECL_INSN_RESERV (decl)->regexp); |
| } |
| } |
| |
| /* The following function checks that declared unit is used. If the |
| unit is not used, the function fixes errors/warnings. The |
| following function must be called only after `process_decls', |
| `process_regexp_decls'. */ |
| static void |
| check_usage (void) |
| { |
| decl_t decl; |
| int i; |
| |
| for (i = 0; i < description->decls_num; i++) |
| { |
| decl = description->decls [i]; |
| if (decl->mode == dm_unit && !DECL_UNIT (decl)->unit_is_used) |
| { |
| if (!w_flag) |
| error ("unit `%s' is not used", DECL_UNIT (decl)->name); |
| else |
| warning ("unit `%s' is not used", DECL_UNIT (decl)->name); |
| } |
| else if (decl->mode == dm_reserv && !DECL_RESERV (decl)->reserv_is_used) |
| { |
| if (!w_flag) |
| error ("reservation `%s' is not used", DECL_RESERV (decl)->name); |
| else |
| warning ("reservation `%s' is not used", DECL_RESERV (decl)->name); |
| } |
| } |
| } |
| |
| /* The following variable value is number of reservation being |
| processed on loop recognition. */ |
| static int curr_loop_pass_num; |
| |
| /* The following recursive function returns nonzero value if REGEXP |
| contains given decl or reservations in given regexp refers for |
| given decl. */ |
| static int |
| loop_in_regexp (regexp_t regexp, decl_t start_decl) |
| { |
| int i; |
| |
| if (regexp == NULL) |
| return 0; |
| switch (regexp->mode) |
| { |
| case rm_unit: |
| return 0; |
| |
| case rm_reserv: |
| if (start_decl->mode == dm_reserv |
| && REGEXP_RESERV (regexp)->reserv_decl == DECL_RESERV (start_decl)) |
| return 1; |
| else if (REGEXP_RESERV (regexp)->reserv_decl->loop_pass_num |
| == curr_loop_pass_num) |
| /* declaration has been processed. */ |
| return 0; |
| else |
| { |
| REGEXP_RESERV (regexp)->reserv_decl->loop_pass_num |
| = curr_loop_pass_num; |
| return loop_in_regexp (REGEXP_RESERV (regexp)->reserv_decl->regexp, |
| start_decl); |
| } |
| |
| case rm_sequence: |
| for (i = 0; i <REGEXP_SEQUENCE (regexp)->regexps_num; i++) |
| if (loop_in_regexp (REGEXP_SEQUENCE (regexp)->regexps [i], start_decl)) |
| return 1; |
| return 0; |
| |
| case rm_allof: |
| for (i = 0; i < REGEXP_ALLOF (regexp)->regexps_num; i++) |
| if (loop_in_regexp (REGEXP_ALLOF (regexp)->regexps [i], start_decl)) |
| return 1; |
| return 0; |
| |
| case rm_oneof: |
| for (i = 0; i < REGEXP_ONEOF (regexp)->regexps_num; i++) |
| if (loop_in_regexp (REGEXP_ONEOF (regexp)->regexps [i], start_decl)) |
| return 1; |
| return 0; |
| |
| case rm_repeat: |
| return loop_in_regexp (REGEXP_REPEAT (regexp)->regexp, start_decl); |
| |
| case rm_nothing: |
| return 0; |
| |
| default: |
| gcc_unreachable (); |
| } |
| } |
| |
| /* The following function fixes errors "cycle in definition ...". The |
| function uses function `loop_in_regexp' for that. */ |
| static void |
| check_loops_in_regexps (void) |
| { |
| decl_t decl; |
| int i; |
| |
| for (i = 0; i < description->decls_num; i++) |
| { |
| decl = description->decls [i]; |
| if (decl->mode == dm_reserv) |
| DECL_RESERV (decl)->loop_pass_num = 0; |
| } |
| for (i = 0; i < description->decls_num; i++) |
| { |
| decl = description->decls [i]; |
| curr_loop_pass_num = i; |
| |
| if (decl->mode == dm_reserv) |
| { |
| DECL_RESERV (decl)->loop_pass_num = curr_loop_pass_num; |
| if (loop_in_regexp (DECL_RESERV (decl)->regexp, decl)) |
| { |
| gcc_assert (DECL_RESERV (decl)->regexp); |
| error ("cycle in definition of reservation `%s'", |
| DECL_RESERV (decl)->name); |
| } |
| } |
| } |
| } |
| |
| /* The function recursively processes IR of reservation and defines |
| max and min cycle for reservation of unit. */ |
| static void |
| process_regexp_cycles (regexp_t regexp, int max_start_cycle, |
| int min_start_cycle, int *max_finish_cycle, |
| int *min_finish_cycle) |
| { |
| int i; |
| |
| switch (regexp->mode) |
| { |
| case rm_unit: |
| if (REGEXP_UNIT (regexp)->unit_decl->max_occ_cycle_num < max_start_cycle) |
| REGEXP_UNIT (regexp)->unit_decl->max_occ_cycle_num = max_start_cycle; |
| if (REGEXP_UNIT (regexp)->unit_decl->min_occ_cycle_num > min_start_cycle |
| || REGEXP_UNIT (regexp)->unit_decl->min_occ_cycle_num == -1) |
| REGEXP_UNIT (regexp)->unit_decl->min_occ_cycle_num = min_start_cycle; |
| *max_finish_cycle = max_start_cycle; |
| *min_finish_cycle = min_start_cycle; |
| break; |
| |
| case rm_reserv: |
| process_regexp_cycles (REGEXP_RESERV (regexp)->reserv_decl->regexp, |
| max_start_cycle, min_start_cycle, |
| max_finish_cycle, min_finish_cycle); |
| break; |
| |
| case rm_repeat: |
| for (i = 0; i < REGEXP_REPEAT (regexp)->repeat_num; i++) |
| { |
| process_regexp_cycles (REGEXP_REPEAT (regexp)->regexp, |
| max_start_cycle, min_start_cycle, |
| max_finish_cycle, min_finish_cycle); |
| max_start_cycle = *max_finish_cycle + 1; |
| min_start_cycle = *min_finish_cycle + 1; |
| } |
| break; |
| |
| case rm_sequence: |
| for (i = 0; i <REGEXP_SEQUENCE (regexp)->regexps_num; i++) |
| { |
| process_regexp_cycles (REGEXP_SEQUENCE (regexp)->regexps [i], |
| max_start_cycle, min_start_cycle, |
| max_finish_cycle, min_finish_cycle); |
| max_start_cycle = *max_finish_cycle + 1; |
| min_start_cycle = *min_finish_cycle + 1; |
| } |
| break; |
| |
| case rm_allof: |
| { |
| int max_cycle = 0; |
| int min_cycle = 0; |
| |
| for (i = 0; i < REGEXP_ALLOF (regexp)->regexps_num; i++) |
| { |
| process_regexp_cycles (REGEXP_ALLOF (regexp)->regexps [i], |
| max_start_cycle, min_start_cycle, |
| max_finish_cycle, min_finish_cycle); |
| if (max_cycle < *max_finish_cycle) |
| max_cycle = *max_finish_cycle; |
| if (i == 0 || min_cycle > *min_finish_cycle) |
| min_cycle = *min_finish_cycle; |
| } |
| *max_finish_cycle = max_cycle; |
| *min_finish_cycle = min_cycle; |
| } |
| break; |
| |
| case rm_oneof: |
| { |
| int max_cycle = 0; |
| int min_cycle = 0; |
| |
| for (i = 0; i < REGEXP_ONEOF (regexp)->regexps_num; i++) |
| { |
| process_regexp_cycles (REGEXP_ONEOF (regexp)->regexps [i], |
| max_start_cycle, min_start_cycle, |
| max_finish_cycle, min_finish_cycle); |
| if (max_cycle < *max_finish_cycle) |
| max_cycle = *max_finish_cycle; |
| if (i == 0 || min_cycle > *min_finish_cycle) |
| min_cycle = *min_finish_cycle; |
| } |
| *max_finish_cycle = max_cycle; |
| *min_finish_cycle = min_cycle; |
| } |
| break; |
| |
| case rm_nothing: |
| *max_finish_cycle = max_start_cycle; |
| *min_finish_cycle = min_start_cycle; |
| break; |
| |
| default: |
| gcc_unreachable (); |
| } |
| } |
| |
| /* The following function is called only for correct program. The |
| function defines max reservation of insns in cycles. */ |
| static void |
| evaluate_max_reserv_cycles (void) |
| { |
| int max_insn_cycles_num; |
| int min_insn_cycles_num; |
| decl_t decl; |
| int i; |
| |
| description->max_insn_reserv_cycles = 0; |
| for (i = 0; i < description->decls_num; i++) |
| { |
| decl = description->decls [i]; |
| if (decl->mode == dm_insn_reserv) |
| { |
| process_regexp_cycles (DECL_INSN_RESERV (decl)->regexp, 0, 0, |
| &max_insn_cycles_num, &min_insn_cycles_num); |
| if (description->max_insn_reserv_cycles < max_insn_cycles_num) |
| description->max_insn_reserv_cycles = max_insn_cycles_num; |
| } |
| } |
| description->max_insn_reserv_cycles++; |
| } |
| |
| /* The following function calls functions for checking all |
| description. */ |
| static void |
| check_all_description (void) |
| { |
| process_decls (); |
| check_automaton_usage (); |
| process_regexp_decls (); |
| check_usage (); |
| check_loops_in_regexps (); |
| if (!have_error) |
| evaluate_max_reserv_cycles (); |
| } |
| |
| |
| |
| /* The page contains abstract data `ticker'. This data is used to |
| report time of different phases of building automata. It is |
| possibly to write a description for which automata will be built |
| during several minutes even on fast machine. */ |
| |
| /* The following function creates ticker and makes it active. */ |
| static ticker_t |
| create_ticker (void) |
| { |
| ticker_t ticker; |
| |
| ticker.modified_creation_time = get_run_time (); |
| ticker.incremented_off_time = 0; |
| return ticker; |
| } |
| |
| /* The following function switches off given ticker. */ |
| static void |
| ticker_off (ticker_t *ticker) |
| { |
| if (ticker->incremented_off_time == 0) |
| ticker->incremented_off_time = get_run_time () + 1; |
| } |
| |
| /* The following function switches on given ticker. */ |
| static void |
| ticker_on (ticker_t *ticker) |
| { |
| if (ticker->incremented_off_time != 0) |
| { |
| ticker->modified_creation_time |
| += get_run_time () - ticker->incremented_off_time + 1; |
| ticker->incremented_off_time = 0; |
| } |
| } |
| |
| /* The following function returns current time in milliseconds since |
| the moment when given ticker was created. */ |
| static int |
| active_time (ticker_t ticker) |
| { |
| if (ticker.incremented_off_time != 0) |
| return ticker.incremented_off_time - 1 - ticker.modified_creation_time; |
| else |
| return get_run_time () - ticker.modified_creation_time; |
| } |
| |
| /* The following function returns string representation of active time |
| of given ticker. The result is string representation of seconds |
| with accuracy of 1/100 second. Only result of the last call of the |
| function exists. Therefore the following code is not correct |
| |
| printf ("parser time: %s\ngeneration time: %s\n", |
| active_time_string (parser_ticker), |
| active_time_string (generation_ticker)); |
| |
| Correct code has to be the following |
| |
| printf ("parser time: %s\n", active_time_string (parser_ticker)); |
| printf ("generation time: %s\n", |
| active_time_string (generation_ticker)); |
| |
| */ |
| static void |
| print_active_time (FILE *f, ticker_t ticker) |
| { |
| int msecs; |
| |
| msecs = active_time (ticker); |
| fprintf (f, "%d.%06d", msecs / 1000000, msecs % 1000000); |
| } |
| |
| |
| |
| /* The following variable value is number of automaton which are |
| really being created. This value is defined on the base of |
| argument of option `-split'. If the variable has zero value the |
| number of automata is defined by the constructions `%automaton'. |
| This case occurs when option `-split' is absent or has zero |
| argument. If constructions `define_automaton' is absent only one |
| automaton is created. */ |
| static int automata_num; |
| |
| /* T
|