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From: "eweddington at cso dot atmel dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/33970] Missed optimization using unsigned char loop variable Date: Sun, 04 Nov 2007 23:28:00 -0000 [thread overview] Message-ID: <20071104232815.26252.qmail@sourceware.org> (raw) In-Reply-To: <bug-33970-15294@http.gcc.gnu.org/bugzilla/> ------- Comment #7 from eweddington at cso dot atmel dot com 2007-11-04 23:28 ------- With Mike's description in comment #6, confirmed on 4.1.2 and 4.2.2. AVR GCC 4.2.2 is worse than 4.1.2, in that even if sub2 is called with (x+1), the variable is still 16 bits. -- eweddington at cso dot atmel dot com changed: What |Removed |Added ---------------------------------------------------------------------------- Known to fail| |4.1.2 4.2.2 Last reconfirmed|0000-00-00 00:00:00 |2007-11-04 23:28:15 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33970
next prev parent reply other threads:[~2007-11-04 23:28 UTC|newest] Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top 2007-11-01 13:44 [Bug c/33970] New: " henning dot m at insightbb dot com 2007-11-01 14:10 ` [Bug c/33970] " rguenth at gcc dot gnu dot org 2007-11-01 17:09 ` [Bug middle-end/33970] " pinskia at gcc dot gnu dot org 2007-11-01 17:28 ` eweddington at cso dot atmel dot com 2007-11-01 17:45 ` eweddington at cso dot atmel dot com 2007-11-01 17:47 ` eweddington at cso dot atmel dot com 2007-11-01 21:26 ` henning dot m at insightbb dot com 2007-11-04 23:28 ` eweddington at cso dot atmel dot com [this message] 2007-11-04 23:28 ` eweddington at cso dot atmel dot com 2007-11-05 22:48 ` wvangulik at xs4all dot nl 2007-11-06 12:37 ` henning dot m at insightbb dot com 2007-11-06 19:35 ` wvangulik at xs4all dot nl 2007-11-06 21:01 ` wvangulik at xs4all dot nl 2010-09-13 12:09 ` abnikant dot singh at atmel dot com [not found] <bug-33970-4@http.gcc.gnu.org/bugzilla/> 2011-07-20 17:48 ` gjl at gcc dot gnu.org
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