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return auto_vec from get_loop_hot_path

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This ensures callers take ownership of the returned vector.

Signed-off-by: Trevor Saunders <tbsaunde@tbsaunde.org>

gcc/ChangeLog:

	* cfgloop.h (get_loop_hot_path): Return auto_vec<basic_block>.
	* cfgloopanal.c (get_loop_hot_path): Likewise.
	* tree-ssa-loop-ivcanon.c (tree_estimate_loop_size): Likewise.
This commit is contained in:
Trevor Saunders 2021-06-06 20:13:38 -04:00
parent 265af872a1
commit a165040e11
3 changed files with 4 additions and 5 deletions
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2
gcc/cfgloop.h
View File

@ -840,7 +840,7 @@ enum
extern void doloop_optimize_loops (void);
extern void move_loop_invariants (void);
extern vec<basic_block> get_loop_hot_path (const class loop *loop);
extern auto_vec<basic_block> get_loop_hot_path (const class loop *loop);
/* Returns the outermost loop of the loop nest that contains LOOP.*/
static inline class loop *

2
gcc/cfgloopanal.c
View File

@ -500,7 +500,7 @@ single_likely_exit (class loop *loop, vec<edge> exits)
order against direction of edges from latch. Specially, if
header != latch, latch is the 1-st block. */
vec<basic_block>
auto_vec<basic_block>
get_loop_hot_path (const class loop *loop)
{
basic_block bb = loop->header;

5
gcc/tree-ssa-loop-ivcanon.c
View File

@ -218,7 +218,7 @@ tree_estimate_loop_size (class loop *loop, edge exit, edge edge_to_cancel,
gimple_stmt_iterator gsi;
unsigned int i;
bool after_exit;
vec<basic_block> path = get_loop_hot_path (loop);
auto_vec<basic_block> path = get_loop_hot_path (loop);
size->overall = 0;
size->eliminated_by_peeling = 0;
@ -342,7 +342,6 @@ tree_estimate_loop_size (class loop *loop, edge exit, edge edge_to_cancel,
- size->last_iteration_eliminated_by_peeling) > upper_bound)
{
free (body);
path.release ();
return true;
}
}
@ -379,7 +378,7 @@ tree_estimate_loop_size (class loop *loop, edge exit, edge edge_to_cancel,
size->num_branches_on_hot_path++;
}
}
path.release ();
if (dump_file && (dump_flags & TDF_DETAILS))
fprintf (dump_file, "size: %i-%i, last_iteration: %i-%i\n", size->overall,
size->eliminated_by_peeling, size->last_iteration,