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From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/30930] [4.3/4.4 Regression] vector can cause to create an extra variable, DECL_GIMPLE_REG_P not recomputed Date: Thu, 18 Sep 2008 01:01:00 -0000 [thread overview] Message-ID: <20080918010013.31690.qmail@sourceware.org> (raw) In-Reply-To: <bug-30930-6528@http.gcc.gnu.org/bugzilla/> ------- Comment #11 from pinskia at gcc dot gnu dot org 2008-09-18 01:00 ------- Here is a testcase which shows a missed optimization in general (on both the tree level and the RTL one) for x86 with SSE2: #define vector __attribute((vector_size(16) )) vector float a; float f(float b) { vector float c = {0, 0, 0, 0}; vector float d = {0, 0, 0, 0}; d += c; return ((float*)&c)[2]; } -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30930
next prev parent reply other threads:[~2008-09-18 1:01 UTC|newest] Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top 2007-02-22 21:53 [Bug tree-optimization/30930] New: [4.3 Regression] vector can cause to create an extra variable pinskia at gcc dot gnu dot org 2007-02-22 23:12 ` [Bug tree-optimization/30930] " pinskia at gcc dot gnu dot org 2007-02-23 9:56 ` rguenth at gcc dot gnu dot org 2007-02-23 22:48 ` pinskia at gcc dot gnu dot org 2007-06-29 17:58 ` mmitchel at gcc dot gnu dot org 2008-01-13 14:56 ` [Bug tree-optimization/30930] [4.3 Regression] vector can cause to create an extra variable, DECL_GIMPLE_REG_P not recomputed rguenth at gcc dot gnu dot org 2008-01-13 18:17 ` pinskia at gcc dot gnu dot org 2008-03-15 0:44 ` [Bug tree-optimization/30930] [4.3/4.4 " jsm28 at gcc dot gnu dot org 2008-06-06 14:58 ` rguenth at gcc dot gnu dot org 2008-08-27 22:03 ` jsm28 at gcc dot gnu dot org 2008-09-17 22:29 ` pinskia at gcc dot gnu dot org 2008-09-17 22:42 ` pinskia at gcc dot gnu dot org 2008-09-17 22:51 ` pinskia at gcc dot gnu dot org 2008-09-18 1:01 ` pinskia at gcc dot gnu dot org [this message] 2008-09-18 8:24 ` rguenther at suse dot de 2008-09-19 22:25 ` [Bug tree-optimization/30930] [4.3 " pinskia at gcc dot gnu dot org 2008-09-19 22:26 ` pinskia at gcc dot gnu dot org 2009-01-24 10:40 ` rguenth at gcc dot gnu dot org 2009-04-16 15:42 ` pinskia at gcc dot gnu dot org 2009-04-22 15:13 ` rguenth at gcc dot gnu dot org 2009-08-04 12:35 ` rguenth at gcc dot gnu dot org 2010-04-20 13:27 ` rguenth at gcc dot gnu dot org
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