/* Vectorizer Specific Loop Manipulations
- Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software
- Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
Contributed by Dorit Naishlos <dorit@il.ibm.com>
and Ira Rosen <irar@il.ibm.com>
use TYPE_VECTOR_SUBPARTS. */
static tree
-vect_gen_niters_for_prolog_loop (loop_vec_info loop_vinfo, tree loop_niters)
+vect_gen_niters_for_prolog_loop (loop_vec_info loop_vinfo, tree loop_niters,
+ tree *wide_prolog_niters)
{
struct data_reference *dr = LOOP_VINFO_UNALIGNED_DR (loop_vinfo);
struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
add_referenced_var (var);
stmts = NULL;
iters_name = force_gimple_operand (iters, &stmts, false, var);
+ if (types_compatible_p (sizetype, niters_type))
+ *wide_prolog_niters = iters_name;
+ else
+ {
+ gimple_seq seq = NULL;
+ tree wide_iters = fold_convert (sizetype, iters);
+ var = create_tmp_var (sizetype, "prolog_loop_niters");
+ add_referenced_var (var);
+ *wide_prolog_niters = force_gimple_operand (wide_iters, &seq, false,
+ var);
+ if (seq)
+ gimple_seq_add_seq (&stmts, seq);
+ }
/* Insert stmt on loop preheader edge. */
if (stmts)
struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
tree niters_of_prolog_loop, ni_name;
tree n_iters;
+ tree wide_prolog_niters;
struct loop *new_loop;
unsigned int th = 0;
int min_profitable_iters;
initialize_original_copy_tables ();
ni_name = vect_build_loop_niters (loop_vinfo, NULL);
- niters_of_prolog_loop = vect_gen_niters_for_prolog_loop (loop_vinfo, ni_name);
+ niters_of_prolog_loop = vect_gen_niters_for_prolog_loop (loop_vinfo, ni_name,
+ &wide_prolog_niters);
/* Get profitability threshold for vectorized loop. */
TREE_TYPE (n_iters), n_iters, niters_of_prolog_loop);
/* Update the init conditions of the access functions of all data refs. */
- vect_update_inits_of_drs (loop_vinfo, niters_of_prolog_loop);
+ vect_update_inits_of_drs (loop_vinfo, wide_prolog_niters);
/* After peeling we have to reset scalar evolution analyzer. */
scev_reset ();