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tree-ssa-pre.c (fini_pre): Take in_fre parameter.

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2008-08-01  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-pre.c (fini_pre): Take in_fre parameter.  Free
	loop information only if we initialized it.
	(execute_pre): Call fini_pre with in_fre.
	* tree-ssa-loop-ivcanon (try_unroll_loop_completely): Dump
	if we do not unroll because we hit max-completely-peeled-insns.
	Use our estimation for consistency, do allow shrinking.

From-SVN: r138522
This commit is contained in:
Richard Guenther 2008-08-01 14:42:42 +00:00 • committed by Richard Biener
parent 769b26a6bd
commit 678e7c6504
3 changed files with 23 additions and 7 deletions
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9
gcc/ChangeLog
View file

@ -1,3 +1,12 @@
2008-08-01 Richard Guenther <rguenther@suse.de>
* tree-ssa-pre.c (fini_pre): Take in_fre parameter. Free
loop information only if we initialized it.
(execute_pre): Call fini_pre with in_fre.
* tree-ssa-loop-ivcanon (try_unroll_loop_completely): Dump
if we do not unroll because we hit max-completely-peeled-insns.
Use our estimation for consistency, do allow shrinking.
2008-08-01 Richard Guenther <rguenther@suse.de>
PR middle-end/36997

15
gcc/tree-ssa-loop-ivcanon.c
View file

@ -184,10 +184,6 @@ try_unroll_loop_completely (struct loop *loop,
ninsns = tree_num_loop_insns (loop, &eni_size_weights);
if (n_unroll * ninsns
> (unsigned) PARAM_VALUE (PARAM_MAX_COMPLETELY_PEELED_INSNS))
return false;
unr_insns = estimated_unrolled_size (ninsns, n_unroll);
if (dump_file && (dump_flags & TDF_DETAILS))
{
@ -196,6 +192,17 @@ try_unroll_loop_completely (struct loop *loop,
(int) unr_insns);
}
if (unr_insns > ninsns
&& (unr_insns
> (unsigned) PARAM_VALUE (PARAM_MAX_COMPLETELY_PEELED_INSNS)))
{
if (dump_file && (dump_flags & TDF_DETAILS))
fprintf (dump_file, "Not unrolling loop %d "
"(--param max-completely-peeled-insns limit reached).\n",
loop->num);
return false;
}
if (ul == UL_NO_GROWTH
&& unr_insns > ninsns)
{

6
gcc/tree-ssa-pre.c
View file

@ -4086,7 +4086,7 @@ init_pre (bool do_fre)
/* Deallocate data structures used by PRE. */
static void
fini_pre (void)
fini_pre (bool do_fre)
{
basic_block bb;
@ -4117,7 +4117,7 @@ fini_pre (void)
BITMAP_FREE (need_eh_cleanup);
if (current_loops != NULL)
if (!do_fre)
loop_optimizer_finalize ();
}
@ -4192,7 +4192,7 @@ execute_pre (bool do_fre ATTRIBUTE_UNUSED)
if (!do_fre)
remove_dead_inserted_code ();
fini_pre ();
fini_pre (do_fre);
return todo;
}