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[Bug tree-optimization/50162] [4.5/4.6/4.7 Regression] Wrong vectorization
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 23 Aug 2011 08:57:37 +0000
- Subject: [Bug tree-optimization/50162] [4.5/4.6/4.7 Regression] Wrong vectorization
- Auto-submitted: auto-generated
- References: <bug-50162-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50162
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |4.4.6
--- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-08-23 08:57:37 UTC ---
4.4 works though. Which has
for (i = 0; i < nargs; i++)
{
op = gimple_call_arg (stmt, i);
if (j == 0)
{
vec_oprnd0
= vect_get_vec_def_for_operand (op, stmt, NULL);
vec_oprnd1
= vect_get_vec_def_for_stmt_copy (dt[nargs], vec_oprnd0);
}
else
{
vec_oprnd0
= vect_get_vec_def_for_stmt_copy (dt[nargs], vec_oprnd1);
vec_oprnd1
= vect_get_vec_def_for_stmt_copy (dt[nargs], vec_oprnd0);
}
instead. Which surely doesn't work for nargs != 1 (?)