/* Instruction scheduling pass.
- Copyright (C) 1992-2013 Free Software Foundation, Inc.
+ Copyright (C) 1992-2015 Free Software Foundation, Inc.
Contributed by Michael Tiemann (tiemann@cygnus.com) Enhanced by,
and currently maintained by, Jim Wilson (wilson@cygnus.com)
#include "hard-reg-set.h"
#include "regs.h"
#include "function.h"
+#include "profile.h"
#include "flags.h"
#include "insn-config.h"
#include "insn-attr.h"
#include "except.h"
#include "recog.h"
#include "params.h"
+#include "dominance.h"
+#include "cfg.h"
+#include "cfgrtl.h"
+#include "cfgbuild.h"
+#include "predict.h"
+#include "basic-block.h"
#include "sched-int.h"
#include "target.h"
/* Implementations of the sched_info functions for region scheduling. */
static void init_ready_list (void);
-static void begin_schedule_ready (rtx);
+static void begin_schedule_ready (rtx_insn *);
static int schedule_more_p (void);
-static const char *ebb_print_insn (const_rtx, int);
-static int rank (rtx, rtx);
-static int ebb_contributes_to_priority (rtx, rtx);
+static const char *ebb_print_insn (const rtx_insn *, int);
+static int rank (rtx_insn *, rtx_insn *);
+static int ebb_contributes_to_priority (rtx_insn *, rtx_insn *);
static basic_block earliest_block_with_similiar_load (basic_block, rtx);
-static void add_deps_for_risky_insns (rtx, rtx);
-static void debug_ebb_dependencies (rtx, rtx);
+static void add_deps_for_risky_insns (rtx_insn *, rtx_insn *);
+static void debug_ebb_dependencies (rtx_insn *, rtx_insn *);
-static void ebb_add_remove_insn (rtx, int);
+static void ebb_add_remove_insn (rtx_insn *, int);
static void ebb_add_block (basic_block, basic_block);
-static basic_block advance_target_bb (basic_block, rtx);
+static basic_block advance_target_bb (basic_block, rtx_insn *);
static void ebb_fix_recovery_cfg (int, int, int);
/* Allocate memory and store the state of the frontend. Return the allocated
/* Print dependency information about ebb between HEAD and TAIL. */
static void
-debug_ebb_dependencies (rtx head, rtx tail)
+debug_ebb_dependencies (rtx_insn *head, rtx_insn *tail)
{
fprintf (sched_dump,
";; --------------- forward dependences: ------------ \n");
init_ready_list (void)
{
int n = 0;
- rtx prev_head = current_sched_info->prev_head;
- rtx next_tail = current_sched_info->next_tail;
- rtx insn;
+ rtx_insn *prev_head = current_sched_info->prev_head;
+ rtx_insn *next_tail = current_sched_info->next_tail;
+ rtx_insn *insn;
sched_rgn_n_insns = 0;
/* INSN is being scheduled after LAST. Update counters. */
static void
-begin_schedule_ready (rtx insn ATTRIBUTE_UNUSED)
+begin_schedule_ready (rtx_insn *insn ATTRIBUTE_UNUSED)
{
sched_rgn_n_insns++;
}
/* INSN is being moved to its place in the schedule, after LAST. */
static void
-begin_move_insn (rtx insn, rtx last)
+begin_move_insn (rtx_insn *insn, rtx_insn *last)
{
if (BLOCK_FOR_INSN (insn) == last_bb
/* INSN is a jump in the last block, ... */
&& BB_END (last_bb) == insn);
{
- rtx x;
-
- x = NEXT_INSN (insn);
+ rtx_insn *x = NEXT_INSN (insn);
if (e)
gcc_checking_assert (NOTE_P (x) || LABEL_P (x));
else
else
{
/* Create an empty unreachable block after the INSN. */
- rtx next = NEXT_INSN (insn);
+ rtx_insn *next = NEXT_INSN (insn);
if (next && BARRIER_P (next))
next = NEXT_INSN (next);
bb = create_basic_block (next, NULL_RTX, last_bb);
to be formatted so that multiple output lines will line up nicely. */
static const char *
-ebb_print_insn (const_rtx insn, int aligned ATTRIBUTE_UNUSED)
+ebb_print_insn (const rtx_insn *insn, int aligned ATTRIBUTE_UNUSED)
{
static char tmp[80];
is to be preferred. Zero if they are equally good. */
static int
-rank (rtx insn1, rtx insn2)
+rank (rtx_insn *insn1, rtx_insn *insn2)
{
basic_block bb1 = BLOCK_FOR_INSN (insn1);
basic_block bb2 = BLOCK_FOR_INSN (insn2);
calculations. */
static int
-ebb_contributes_to_priority (rtx next ATTRIBUTE_UNUSED,
- rtx insn ATTRIBUTE_UNUSED)
+ebb_contributes_to_priority (rtx_insn *next ATTRIBUTE_UNUSED,
+ rtx_insn *insn ATTRIBUTE_UNUSED)
{
return 1;
}
FOR_EACH_DEP (load_insn, SD_LIST_BACK, back_sd_it, back_dep)
{
- rtx insn1 = DEP_PRO (back_dep);
+ rtx_insn *insn1 = DEP_PRO (back_dep);
if (DEP_TYPE (back_dep) == REG_DEP_TRUE)
/* Found a DEF-USE dependence (insn1, load_insn). */
FOR_EACH_DEP (insn1, SD_LIST_FORW, fore_sd_it, fore_dep)
{
- rtx insn2 = DEP_CON (fore_dep);
+ rtx_insn *insn2 = DEP_CON (fore_dep);
basic_block insn2_block = BLOCK_FOR_INSN (insn2);
if (DEP_TYPE (fore_dep) == REG_DEP_TRUE)
insns in given ebb. */
static void
-add_deps_for_risky_insns (rtx head, rtx tail)
+add_deps_for_risky_insns (rtx_insn *head, rtx_insn *tail)
{
- rtx insn, prev;
+ rtx_insn *insn, *prev;
int classification;
- rtx last_jump = NULL_RTX;
- rtx next_tail = NEXT_INSN (tail);
+ rtx_insn *last_jump = NULL;
+ rtx_insn *next_tail = NEXT_INSN (tail);
basic_block last_block = NULL, bb;
for (insn = head; insn != next_tail; insn = NEXT_INSN (insn))
NULL_RTX. */
basic_block
-schedule_ebb (rtx head, rtx tail, bool modulo_scheduling)
+schedule_ebb (rtx_insn *head, rtx_insn *tail, bool modulo_scheduling)
{
basic_block first_bb, target_bb;
struct deps_desc tmp_deps;
{
basic_block bb;
int probability_cutoff;
- rtx tail;
+ rtx_insn *tail;
/* Taking care of this degenerate case makes the rest of
this code simpler. */
- if (n_basic_blocks == NUM_FIXED_BLOCKS)
+ if (n_basic_blocks_for_fn (cfun) == NUM_FIXED_BLOCKS)
return;
if (profile_info && flag_branch_probabilities)
schedule_ebbs_init ();
/* Schedule every region in the subroutine. */
- FOR_EACH_BB (bb)
+ FOR_EACH_BB_FN (bb, cfun)
{
- rtx head = BB_HEAD (bb);
+ rtx_insn *head = BB_HEAD (bb);
if (bb->flags & BB_DISABLE_SCHEDULE)
continue;
{
edge e;
tail = BB_END (bb);
- if (bb->next_bb == EXIT_BLOCK_PTR
+ if (bb->next_bb == EXIT_BLOCK_PTR_FOR_FN (cfun)
|| LABEL_P (BB_HEAD (bb->next_bb)))
break;
e = find_fallthru_edge (bb->succs);
/* INSN has been added to/removed from current ebb. */
static void
-ebb_add_remove_insn (rtx insn ATTRIBUTE_UNUSED, int remove_p)
+ebb_add_remove_insn (rtx_insn *insn ATTRIBUTE_UNUSED, int remove_p)
{
if (!remove_p)
rgn_n_insns++;
/* Recovery blocks are always bounded by BARRIERS,
therefore, they always form single block EBB,
therefore, we can use rec->index to identify such EBBs. */
- if (after == EXIT_BLOCK_PTR)
+ if (after == EXIT_BLOCK_PTR_FOR_FN (cfun))
bitmap_set_bit (&dont_calc_deps, bb->index);
else if (after == last_bb)
last_bb = bb;
/* Return next block in ebb chain. For parameter meaning please refer to
sched-int.h: struct sched_info: advance_target_bb. */
static basic_block
-advance_target_bb (basic_block bb, rtx insn)
+advance_target_bb (basic_block bb, rtx_insn *insn)
{
if (insn)
{
gcc_assert (last_bb->index != bbi);
if (jump_bb_nexti == last_bb->index)
- last_bb = BASIC_BLOCK (jump_bbi);
+ last_bb = BASIC_BLOCK_FOR_FN (cfun, jump_bbi);
}
#endif /* INSN_SCHEDULING */
projects / gcc.git / blobdiff