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[Bug tree-optimization/35653] gcc-4.3 -O3/-ftree-vectorize regression: incorrect code generation
- From: "edwintorok at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 21 Mar 2008 12:42:53 -0000
- Subject: [Bug tree-optimization/35653] gcc-4.3 -O3/-ftree-vectorize regression: incorrect code generation
- References: <bug-35653-15165@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #1 from edwintorok at gmail dot com 2008-03-21 12:42 -------
Created an attachment (id=15353)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=15353&action=view)
reduced testcase
$ gcc-4.3 -O1 -g -ftree-vectorize test.i -o fails
$ gdb ./fails
GNU gdb 6.7.1-debian
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This GDB was configured as "x86_64-linux-gnu"...
Using host libthread_db library "/lib/libthread_db.so.1".
(gdb) r
Starting program:
/home/edwin/clam/svn3/builds/gcc43opt/fortify-asserts-exp/tmpd/fails
Program received signal SIGSEGV, Segmentation fault.
0x0000000000400532 in main () at test.i:14
14 (*(uint32_t *)(dest)=(uint32_t)(0x4000400));
(gdb) p dest
$1 = 0x7fffaae00672 ""
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35653