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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 middle-end/22156] [4.0/4.1 Regression] bit-field copying regressed Date: Thu, 23 Jun 2005 05:11:00 -0000 [thread overview] Message-ID: <20050623051142.30294.qmail@sourceware.org> (raw) In-Reply-To: <20050623050243.22156.pinskia@gcc.gnu.org> ------- Additional Comments From pinskia at gcc dot gnu dot org 2005-06-23 05:11 ------- The main difference between the C++ front-end and the C front-end in this respect is how they repesent bit-fields. for the C++ front-end we get the following output from SRA: Cannot scalarize variable D.1693 because its type cannot be decomposed but for the C front-end we get: Scan results: D.1237: n_uses=0 n_copies=2 Initial instantiation for D.1237 Using element-copy for D.1237 D.1237.i1 -> SR.12 D.1237.i2 -> SR.13 D.1237.i3 -> SR.14 So to me this looks like a SRA bug in that it should be using BIT_FIELD_REF instead if it can. -- What |Removed |Added ---------------------------------------------------------------------------- CC| |rth at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22156
next prev parent reply other threads:[~2005-06-23 5:11 UTC|newest] Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top 2005-06-23 5:02 [Bug middle-end/22156] New: " pinskia at gcc dot gnu dot org 2005-06-23 5:04 ` [Bug middle-end/22156] " pinskia at gcc dot gnu dot org 2005-06-23 5:11 ` pinskia at gcc dot gnu dot org [this message] 2005-06-23 5:34 ` pinskia at gcc dot gnu dot org 2005-06-23 13:09 ` kazu at cs dot umass dot edu 2005-06-23 13:18 ` pluto at agmk dot net 2005-06-23 19:49 ` pinskia at gcc dot gnu dot org 2005-07-04 10:26 ` pinskia at gcc dot gnu dot org 2005-07-04 10:32 ` pinskia at gcc dot gnu dot org 2005-07-08 1:44 ` mmitchel at gcc dot gnu dot org 2005-08-05 20:45 ` pinskia at gcc dot gnu dot org 2005-09-14 17:35 ` pinskia at gcc dot gnu dot org 2005-09-15 14:27 ` pinskia at gcc dot gnu dot org 2005-09-27 16:25 ` mmitchel at gcc dot gnu dot org [not found] <bug-22156-6528@http.gcc.gnu.org/bugzilla/> 2005-10-13 21:06 ` pinskia at gcc dot gnu dot org 2005-10-27 20:32 ` pinskia at gcc dot gnu dot org 2005-10-30 23:32 ` pinskia at gcc dot gnu dot org
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