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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/100171] autovectorizer Date: Wed, 21 Apr 2021 08:25:13 +0000 [thread overview] Message-ID: <bug-100171-4-1jxcOzO6ol@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-100171-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100171 --- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- Compared to the non-self case where we see <bb 2> [local count: 357878152]: _19 = MEM <const double[2]> [(const value_type &)arg1_3(D)][0]; _20 = MEM <const double[2]> [(const value_type &)arg2_4(D)][0]; _21 = _19 + _20; _26 = MEM <const double[2]> [(const value_type &)arg1_3(D)][1]; _27 = MEM <const double[2]> [(const value_type &)arg2_4(D)][1]; _28 = _26 + _27; res ={v} {CLOBBER}; MEM[(struct value_type *)out_2(D)][0].value._M_elems[0] = _21; MEM[(struct value_type *)out_2(D)][0].value._M_elems[1] = _28; return; here intermediate optimizations have elided 'res'.
next prev parent reply other threads:[~2021-04-21 8:25 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-21 3:36 [Bug c++/100171] New: autovectorizer g.peterhoff@t-online.de 2021-04-21 5:09 ` [Bug tree-optimization/100171] autovectorizer pinskia at gcc dot gnu.org 2021-04-21 6:58 ` rguenth at gcc dot gnu.org 2021-04-21 8:25 ` rguenth at gcc dot gnu.org [this message] 2021-08-17 5:40 ` pinskia at gcc dot gnu.org
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