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From: "steven at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/38564] [4.4 Regression] Revision 142662 caused ICE in insert_into_preds_of_block
Date: Tue, 23 Dec 2008 18:52:00 -0000 [thread overview]
Message-ID: <20081223185101.8350.qmail@sourceware.org> (raw)
In-Reply-To: <bug-38564-7151@http.gcc.gnu.org/bugzilla/>
------- Comment #9 from steven at gcc dot gnu dot org 2008-12-23 18:51 -------
Hack demonstrates the problem:
Index: tree-ssa-pre.c
===================================================================
--- tree-ssa-pre.c (revision 142907)
+++ tree-ssa-pre.c (working copy)
@@ -3274,6 +3274,17 @@ do_regular_insertion (basic_block block, basic_blo
}
else
{
+ /* For PRE of comparisons, we have to make sure
+ that the result is of the proper type. */
+ if (edoubleprime->kind == CONSTANT
+ && expr->kind == NARY
+ && TREE_CODE_CLASS (PRE_EXPR_NARY (expr)->opcode)
+ == tcc_comparison)
+ {
+ PRE_EXPR_CONSTANT (edoubleprime) =
+ fold_convert (get_expr_type (expr),
+ PRE_EXPR_CONSTANT (edoubleprime));
+ }
avail[bprime->index] = edoubleprime;
by_some = true;
if (first_s == NULL)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38564
next prev parent reply other threads:[~2008-12-23 18:52 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-18 1:51 [Bug tree-optimization/38564] New: " daney at gcc dot gnu dot org
2008-12-18 1:54 ` [Bug tree-optimization/38564] [4.4 Regression] " daney at gcc dot gnu dot org
2008-12-18 1:55 ` pinskia at gcc dot gnu dot org
2008-12-18 2:10 ` pinskia at gcc dot gnu dot org
2008-12-18 6:00 ` [Bug tree-optimization/38564] [4.4 Regression] Revision 142662 caused " hjl dot tools at gmail dot com
2008-12-18 8:14 ` jakub at gcc dot gnu dot org
2008-12-23 17:20 ` hjl dot tools at gmail dot com
2008-12-23 17:22 ` hjl dot tools at gmail dot com
2008-12-23 17:57 ` pinskia at gcc dot gnu dot org
2008-12-23 18:21 ` steven at gcc dot gnu dot org
2008-12-23 18:52 ` steven at gcc dot gnu dot org [this message]
2008-12-29 17:56 ` rguenth at gcc dot gnu dot org
2008-12-29 19:56 ` rguenth at gcc dot gnu dot org
2008-12-30 10:30 ` rguenth at gcc dot gnu dot org
2008-12-30 10:32 ` rguenth at gcc dot gnu dot org
2010-04-27 12:17 ` rguenth at gcc dot gnu dot org
[not found] <bug-38564-4@http.gcc.gnu.org/bugzilla/>
2011-02-02 22:23 ` pinskia at gcc dot gnu.org
2011-02-03 9:40 ` rguenther at suse dot de
2011-02-03 22:26 ` pinskia at gcc dot gnu.org
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