public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/55481] [4.8 regression] -O2 generates a wrong-code infinite loop in C++Benchmark's simple_types_constant_folding int8 xor test Date: Wed, 28 Nov 2012 15:16:00 -0000 [thread overview] Message-ID: <bug-55481-4-wF1hpYtiyy@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-55481-4@http.gcc.gnu.org/bugzilla/> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55481 --- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> 2012-11-28 15:16:00 UTC --- Caused by 2012-06-27 Richard Guenther <rguenther@suse.de> PR middle-end/53676 * tree-chrec.c (chrec_convert_1): Represent truncation to a type with undefined overflow as truncation to an unsigned type converted to the type with undefined overflow. * tree-scalar-evolution.c (interpret_rhs_expr): For computing the scalar evolution of a truncated widened operation avoid looking at the non-existing evolution of the widened operation result.
next prev parent reply other threads:[~2012-11-28 15:16 UTC|newest] Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-11-27 1:08 [Bug middle-end/55481] New: " matt at use dot net 2012-11-27 1:09 ` [Bug middle-end/55481] " matt at use dot net 2012-11-27 1:10 ` pinskia at gcc dot gnu.org 2012-11-27 2:11 ` matt at use dot net 2012-11-27 10:40 ` rguenth at gcc dot gnu.org 2012-11-27 10:41 ` rguenth at gcc dot gnu.org 2012-11-27 11:02 ` rguenth at gcc dot gnu.org 2012-11-27 11:12 ` rguenth at gcc dot gnu.org 2012-11-27 16:10 ` rguenth at gcc dot gnu.org 2012-11-28 15:15 ` rguenth at gcc dot gnu.org 2012-11-28 15:16 ` rguenth at gcc dot gnu.org [this message] 2012-11-28 15:17 ` rguenth at gcc dot gnu.org 2012-11-28 15:39 ` rguenth at gcc dot gnu.org 2012-11-28 16:19 ` rakdver at iuuk dot mff.cuni.cz 2012-12-07 10:44 ` rguenth at gcc dot gnu.org 2012-12-10 18:19 ` rakdver at gcc dot gnu.org 2012-12-11 18:19 ` rakdver at gcc dot gnu.org 2012-12-12 9:43 ` rguenth at gcc dot gnu.org 2012-12-12 13:07 ` rguenth at gcc dot gnu.org 2012-12-12 13:08 ` rguenth at gcc dot gnu.org 2013-03-01 12:24 ` rguenth at gcc dot gnu.org 2013-03-01 12:30 ` rguenth at gcc dot gnu.org 2013-03-01 13:55 ` rguenth at gcc dot gnu.org 2013-03-01 13:55 ` rguenth at gcc dot gnu.org
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=bug-55481-4-wF1hpYtiyy@http.gcc.gnu.org/bugzilla/ \ --to=gcc-bugzilla@gcc.gnu.org \ --cc=gcc-bugs@gcc.gnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).