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cfganal.c (pre_and_rev_post_order_compute_fn): Use an auto_bb_flag instead of an sbitmap for visited handling. 

2019-11-25  Richard Biener  <rguenther@suse.de>

	* cfganal.c (pre_and_rev_post_order_compute_fn): Use an
	auto_bb_flag instead of an sbitmap for visited handling.

From-SVN: r278666
This commit is contained in:
Richard Biener 2019-11-25 07:48:48 +00:00 committed by Richard Biener
parent bceb7181c8
commit 5a34952edb
2 changed files with 13 additions and 7 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2019-11-25 Richard Biener <rguenther@suse.de>
* cfganal.c (pre_and_rev_post_order_compute_fn): Use an
auto_bb_flag instead of an sbitmap for visited handling.
2019-11-25 Kewen Lin <linkw@gcc.gnu.org>
* config/rs6000/vector.md (vector_fp_comparison_simple): New code

15
gcc/cfganal.c
View File

@ -967,11 +967,8 @@ pre_and_rev_post_order_compute_fn (struct function *fn,
else
rev_post_order_num -= NUM_FIXED_BLOCKS;
/* Allocate bitmap to track nodes that have been visited. */
auto_sbitmap visited (last_basic_block_for_fn (fn));
/* None of the nodes in the CFG have been visited yet. */
bitmap_clear (visited);
/* BB flag to track nodes that have been visited. */
auto_bb_flag visited (fn);
/* Push the first edge on to the stack. */
stack.quick_push (ei_start (ENTRY_BLOCK_PTR_FOR_FN (fn)->succs));
@ -988,10 +985,10 @@ pre_and_rev_post_order_compute_fn (struct function *fn,
/* Check if the edge destination has been visited yet. */
if (dest != EXIT_BLOCK_PTR_FOR_FN (fn)
&& ! bitmap_bit_p (visited, dest->index))
&& ! (dest->flags & visited))
{
/* Mark that we have visited the destination. */
bitmap_set_bit (visited, dest->index);
dest->flags |= visited;
if (pre_order)
pre_order[pre_order_num] = dest->index;
@ -1032,6 +1029,10 @@ pre_and_rev_post_order_compute_fn (struct function *fn,
rev_post_order[rev_post_order_num--] = ENTRY_BLOCK;
}
/* Clear the temporarily allocated flag. */
for (int i = 0; i < pre_order_num; ++i)
BASIC_BLOCK_FOR_FN (fn, rev_post_order[i])->flags &= ~visited;
return pre_order_num;
}