/* Instruction scheduling pass. This file contains definitions used
internally in the scheduler.
Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- 2001, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ 2001, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
This file is part of GCC.
extern char *ready_try;
extern struct ready_list ready;
-extern int max_issue (struct ready_list *, int, state_t, int *);
+extern int max_issue (struct ready_list *, int, state_t, bool, int *);
extern void ebb_compute_jump_reg_dependencies (rtx, regset, regset, regset);
-extern edge find_fallthru_edge (basic_block);
+extern edge find_fallthru_edge_from (basic_block);
extern void (* sched_init_only_bb) (basic_block, basic_block);
extern basic_block (* sched_split_block) (basic_block, rtx);
};
/* Describe state of dependencies used during sched_analyze phase. */
-struct deps
+struct deps_desc
{
/* The *_insns and *_mems are paired lists. Each pending memory operation
will have a pointer to the MEM rtx on one list and a pointer to the
BOOL_BITFIELD readonly : 1;
};
-typedef struct deps *deps_t;
+typedef struct deps_desc *deps_t;
/* This structure holds some state of the current scheduling pass, and
contains some function pointers that abstract out some of the non-generic
parameter == 0) or removed (second parameter == 1). */
void (*add_remove_insn) (rtx, int);
- /* Called to notify frontend that instruction is being scheduled.
- The first parameter - instruction to scheduled, the second parameter -
- last scheduled instruction. */
- void (*begin_schedule_ready) (rtx, rtx);
+ /* Called to notify the frontend that instruction INSN is being
+ scheduled. */
+ void (*begin_schedule_ready) (rtx insn);
+
+ /* Called to notify the frontend that an instruction INSN is about to be
+ moved to its correct place in the final schedule. This is done for all
+ insns in order of the schedule. LAST indicates the last scheduled
+ instruction. */
+ void (*begin_move_insn) (rtx insn, rtx last);
/* If the second parameter is not NULL, return nonnull value, if the
basic block should be advanced.
up. */
extern bool sched_pressure_p;
-/* Map regno -> its cover class. The map defined only when
+/* Map regno -> its pressure class. The map defined only when
SCHED_PRESSURE_P is true. */
-extern enum reg_class *sched_regno_cover_class;
+extern enum reg_class *sched_regno_pressure_class;
/* Indexed by INSN_UID, the collection of all data associated with
a single instruction. */
#define INCREASE_BITS 8
/* The structure describes how the corresponding insn increases the
- register pressure for each cover class. */
+ register pressure for each pressure class. */
struct reg_pressure_data
{
/* Pressure increase for given class because of clobber. */
};
/* The following structure describes used sets of registers by insns.
- Registers are pseudos whose cover class is not NO_REGS or hard
+ Registers are pseudos whose pressure class is not NO_REGS or hard
registers available for allocations. */
struct reg_set_data
{
struct reg_pressure_data *reg_pressure;
/* The following array contains maximal reg pressure between last
scheduled insn and given insn. There is an element for each
- cover class of pseudos referenced in insns. This info updated
+ pressure class of pseudos referenced in insns. This info updated
after scheduling each insn for each insn between the two
mentioned insns. */
int *max_reg_pressure;
#define IS_SPECULATION_BRANCHY_CHECK_P(INSN) \
(RECOVERY_BLOCK (INSN) != NULL && RECOVERY_BLOCK (INSN) != EXIT_BLOCK_PTR)
-/* The unchanging bit tracks whether a debug insn is to be handled
- like an insn (i.e., schedule it) or like a note (e.g., it is next
- to a basic block boundary. */
-#define DEBUG_INSN_SCHED_P(insn) \
- (RTL_FLAG_CHECK1("DEBUG_INSN_SCHED_P", (insn), DEBUG_INSN)->unchanging)
-
-/* True if INSN is a debug insn that is next to a basic block
- boundary, i.e., it is to be handled by the scheduler like a
- note. */
-#define BOUNDARY_DEBUG_INSN_P(insn) \
- (DEBUG_INSN_P (insn) && !DEBUG_INSN_SCHED_P (insn))
-/* True if INSN is a debug insn that is not next to a basic block
- boundary, i.e., it is to be handled by the scheduler like an
- insn. */
-#define SCHEDULE_DEBUG_INSN_P(insn) \
- (DEBUG_INSN_P (insn) && DEBUG_INSN_SCHED_P (insn))
-
/* Dep status (aka ds_t) of the link encapsulates information, that is needed
for speculative scheduling. Namely, it is 4 integers in the range
[0, MAX_DEP_WEAK] and 3 bits.
extern bool sched_insns_conditions_mutex_p (const_rtx, const_rtx);
extern bool sched_insn_is_legitimate_for_speculation_p (const_rtx, ds_t);
extern void add_dependence (rtx, rtx, enum reg_note);
-extern void sched_analyze (struct deps *, rtx, rtx);
-extern void init_deps (struct deps *, bool);
-extern void init_deps_reg_last (struct deps *);
-extern void free_deps (struct deps *);
+extern void sched_analyze (struct deps_desc *, rtx, rtx);
+extern void init_deps (struct deps_desc *, bool);
+extern void init_deps_reg_last (struct deps_desc *);
+extern void free_deps (struct deps_desc *);
extern void init_deps_global (void);
extern void finish_deps_global (void);
-extern void deps_analyze_insn (struct deps *, rtx);
-extern void remove_from_deps (struct deps *, rtx);
+extern void deps_analyze_insn (struct deps_desc *, rtx);
+extern void remove_from_deps (struct deps_desc *, rtx);
+extern void init_insn_reg_pressure_info (rtx);
extern dw_t get_dep_weak_1 (ds_t, ds_t);
extern dw_t get_dep_weak (ds_t, ds_t);
extern void maybe_extend_reg_info_p (void);
-extern void deps_start_bb (struct deps *, rtx);
+extern void deps_start_bb (struct deps_desc *, rtx);
extern enum reg_note ds_to_dt (ds_t);
extern bool deps_pools_are_empty_p (void);
extern rtx bb_note (basic_block);
extern void concat_note_lists (rtx, rtx *);
extern rtx sched_emit_insn (rtx);
+extern rtx get_ready_element (int);
+extern int number_in_ready (void);
\f
/* Types and functions in sched-rgn.c. */
extern void free_rgn_deps (void);
extern int contributes_to_priority (rtx, rtx);
extern void extend_rgns (int *, int *, sbitmap, int *);
-extern void deps_join (struct deps *, struct deps *);
+extern void deps_join (struct deps_desc *, struct deps_desc *);
extern void rgn_setup_common_sched_info (void);
extern void rgn_setup_sched_infos (void);
sd_iterator_cond (&(ITER), &(DEP)); \
sd_iterator_next (&(ITER)))
+#define IS_DISPATCH_ON 1
+#define IS_CMP 2
+#define DISPATCH_VIOLATION 3
+#define FITS_DISPATCH_WINDOW 4
+#define DISPATCH_INIT 5
+#define ADD_TO_DISPATCH_WINDOW 6
+
extern int sd_lists_size (const_rtx, sd_list_types_def);
extern bool sd_lists_empty_p (const_rtx, sd_list_types_def);
extern void sd_init_insn (rtx);
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