/* Perform branch target register load optimizations.
- Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
+ Free Software Foundation, Inc.
This file is part of GCC.
&& TEST_HARD_REG_BIT (all_btrs, REGNO (dest)))
{
gcc_assert (!btr_referenced_p (src, NULL));
-
+
if (!check_const || CONSTANT_P (src))
{
if (regno)
defs_uses_info info;
sbitmap_vector_zero (bb_gen, n_basic_blocks);
- for (i = 0; i < n_basic_blocks; i++)
+ for (i = NUM_FIXED_BLOCKS; i < n_basic_blocks; i++)
{
basic_block bb = BASIC_BLOCK (i);
int reg;
/* For each basic block, form the set BB_KILL - the set
of definitions that the block kills. */
sbitmap_vector_zero (bb_kill, n_basic_blocks);
- for (i = 0; i < n_basic_blocks; i++)
+ for (i = NUM_FIXED_BLOCKS; i < n_basic_blocks; i++)
{
for (regno = first_btr; regno <= last_btr; regno++)
if (TEST_HARD_REG_BIT (all_btrs, regno)
int changed;
sbitmap bb_in = sbitmap_alloc (max_uid);
- for (i = 0; i < n_basic_blocks; i++)
+ for (i = NUM_FIXED_BLOCKS; i < n_basic_blocks; i++)
sbitmap_copy (bb_out[i], bb_gen[i]);
changed = 1;
while (changed)
{
changed = 0;
- for (i = 0; i < n_basic_blocks; i++)
+ for (i = NUM_FIXED_BLOCKS; i < n_basic_blocks; i++)
{
sbitmap_union_of_preds (bb_in, bb_out, i);
changed |= sbitmap_union_of_diff_cg (bb_out[i], bb_gen[i],
/* Link uses to the uses lists of all of their reaching defs.
Count up the number of reaching defs of each use. */
- for (i = 0; i < n_basic_blocks; i++)
+ for (i = NUM_FIXED_BLOCKS; i < n_basic_blocks; i++)
{
basic_block bb = BASIC_BLOCK (i);
rtx insn;
{
/* Find all the reaching defs for this use. */
sbitmap reaching_defs_of_reg = sbitmap_alloc(max_uid);
- unsigned int uid;
+ unsigned int uid = 0;
sbitmap_iterator sbi;
if (user->use)
build_btr_def_use_webs (fibheap_t all_btr_defs)
{
const int max_uid = get_max_uid ();
- btr_def *def_array = xcalloc (max_uid, sizeof (btr_def));
- btr_user *use_array = xcalloc (max_uid, sizeof (btr_user));
+ btr_def *def_array = XCNEWVEC (btr_def, max_uid);
+ btr_user *use_array = XCNEWVEC (btr_user, max_uid);
sbitmap *btr_defset = sbitmap_vector_alloc (
(last_btr - first_btr) + 1, max_uid);
sbitmap *bb_gen = sbitmap_vector_alloc (n_basic_blocks, max_uid);
- HARD_REG_SET *btrs_written = xcalloc (n_basic_blocks, sizeof (HARD_REG_SET));
+ HARD_REG_SET *btrs_written = XCNEWVEC (HARD_REG_SET, n_basic_blocks);
sbitmap *bb_kill;
sbitmap *bb_out;
{
basic_block *worklist, *tos;
- tos = worklist = xmalloc (sizeof (basic_block) * (n_basic_blocks + 1));
+ tos = worklist = XNEWVEC (basic_block, n_basic_blocks + 1);
if (dominated_by_p (CDI_DOMINATORS, new_bb, head_bb))
{
{
if (full_range)
IOR_HARD_REG_SET (*btrs_live_in_range, btrs_live[new_bb->index]);
+ free (tos);
return;
}
*tos++ = new_bb;
int new_block = new_bb->index;
gcc_assert (dominated_by_p (CDI_DOMINATORS, head_bb, new_bb));
-
+
IOR_HARD_REG_SET (*btrs_live_in_range, btrs_live[head_bb->index]);
bitmap_set_bit (live_range, new_block);
/* A previous btr migration could have caused a register to be
- live just at the end of new_block which we need in full, so
- use trs_live_at_end even if full_range is set. */
+ live just at the end of new_block which we need in full, so
+ use trs_live_at_end even if full_range is set. */
IOR_HARD_REG_SET (*btrs_live_in_range, btrs_live_at_end[new_block]);
if (full_range)
IOR_HARD_REG_SET (*btrs_live_in_range, btrs_live[new_block]);
insp = BB_END (b);
for (insp = BB_END (b); ! INSN_P (insp); insp = PREV_INSN (insp))
gcc_assert (insp != BB_HEAD (b));
-
+
if (JUMP_P (insp) || can_throw_internal (insp))
insp = PREV_INSN (insp);
}
/* Try to move the instruction that sets the target register into
basic block TRY. */
int try_freq = basic_block_freq (try);
+ edge_iterator ei;
+ edge e;
+
+ /* If TRY has abnormal edges, skip it. */
+ FOR_EACH_EDGE (e, ei, try->succs)
+ if (e->flags & EDGE_COMPLEX)
+ break;
+ if (e)
+ continue;
if (dump_file)
fprintf (dump_file, "trying block %d ...", try->index);
{
int i;
- for (i = 0; i < n_basic_blocks; i++)
+ for (i = NUM_FIXED_BLOCKS; i < n_basic_blocks; i++)
{
basic_block bb = BASIC_BLOCK (i);
fprintf(dump_file,
cleanup_cfg (optimize ? CLEANUP_EXPENSIVE : 0);
#endif
- life_analysis (NULL, 0);
+ life_analysis (0);
/* Dominator info is also needed for migrate_btr_def. */
calculate_dominance_info (CDI_DOMINATORS);
}
-static void
+static unsigned int
rest_of_handle_branch_target_load_optimize (void)
{
static int warned = 0;
&& !warned)
{
warning (0, "branch target register load optimization is not intended "
- "to be run twice");
+ "to be run twice");
warned = 1;
}
branch_target_load_optimize (epilogue_completed);
+ return 0;
}
struct tree_opt_pass pass_branch_target_load_optimize =
NULL, /* sub */
NULL, /* next */
0, /* static_pass_number */
- 0, /* tv_id */
+ 0, /* tv_id */
0, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
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