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[Bug tree-optimization/43657] [4.3/4.4/4.5 Regression] -ftree-loop-linear causes FAIL: gcc.dg/vect/vect-cond-5.c execution test
- From: "zsojka at seznam dot cz" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 5 Apr 2010 23:02:37 -0000
- Subject: [Bug tree-optimization/43657] [4.3/4.4/4.5 Regression] -ftree-loop-linear causes FAIL: gcc.dg/vect/vect-cond-5.c execution test
- References: <bug-43657-14164@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #1 from zsojka at seznam dot cz 2010-04-05 23:02 -------
Created an attachment (id=20319)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20319&action=view)
slightly reduced testcase, showing computed data
$ gcc-4.5.0-alpha20100401 -O1 -ftree-loop-linear pr43657.c && ./a.out
0 6 2
1 5 2
2 4 2
3 3 2
4 2 2
5 0 0
6 0 0
7 0 0
8 0 0
9 0 0
10 0 0
11 0 0
12 0 0
13 0 0
14 0 0
15 0 0
16 0 0
17 0 0
18 0 0
19 0 0
20 0 0
21 0 0
22 0 0
23 0 0
24 0 0
25 0 0
26 0 0
27 0 0
28 0 0
29 0 0
30 0 0
31 0 0
Aborted
$ gcc-4.2.4 -O1 -ftree-loop-linear pr43657.c && ./a.out
0 2 2
1 2 2
2 2 2
3 2 2
4 2 2
5 0 0
6 0 0
7 0 0
8 0 0
9 0 0
10 0 0
11 0 0
12 0 0
13 0 0
14 0 0
15 0 0
16 0 0
17 0 0
18 0 0
19 0 0
20 0 0
21 0 0
22 0 0
23 0 0
24 0 0
25 0 0
26 0 0
27 0 0
28 0 0
29 0 0
30 0 0
31 0 0
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43657