OpenE2K
/
gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

re PR tree-optimization/18307 (merge_pointed_to_info called incorrectly) 

PR tree-optimization/18307
	* tree-ssa-alias.c (merge_pointed_to_info): ICE if 'dest' and
	'orig' are the same node.
	(collect_points_to_info_r): Do not call merge_pointed_to_info
	when the PHI argument is identical to the LHS.

From-SVN: r90816
This commit is contained in:
Diego Novillo 2004-11-17 21:07:03 +00:00 committed by Diego Novillo
parent 7c278f7987
commit 730bddf26c
2 changed files with 13 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2004-11-17 Diego Novillo <dnovillo@redhat.com>
PR tree-optimization/18307
* tree-ssa-alias.c (merge_pointed_to_info): ICE if 'dest' and
'orig' are the same node.
(collect_points_to_info_r): Do not call merge_pointed_to_info
when the PHI argument is identical to the LHS.
2004-11-17 Steven Bosscher <stevenb@suse.de>
* tree-ssa-propagate.c (cfg_blocks_add) Assert we're not trying

12
gcc/tree-ssa-alias.c
View File

@ -1697,12 +1697,8 @@ merge_pointed_to_info (struct alias_info *ai, tree dest, tree orig)
{
struct ptr_info_def *dest_pi, *orig_pi;
/* FIXME: It is erroneous to call this function with identical
nodes, however that currently occurs during bootstrap. This check
stops further breakage. PR 18307 documents the issue. */
if (dest == orig)
return;
gcc_assert (dest != orig);
/* Make sure we have points-to information for ORIG. */
collect_points_to_info_for (ai, orig);
@ -1938,7 +1934,9 @@ collect_points_to_info_r (tree var, tree stmt, void *data)
break;
case SSA_NAME:
merge_pointed_to_info (ai, lhs, var);
/* Avoid unnecessary merges. */
if (lhs != var)
merge_pointed_to_info (ai, lhs, var);
break;
default: