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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/56015] expand expands p[9] = COMPLEX_EXPR <-IMAGPART_EXPR <p[9]>, REALPART_EXPR <p[9]>>; incorrectly.
Date: Thu, 17 Jan 2013 08:52:00 -0000 [thread overview]
Message-ID: <bug-56015-4-8VvONCPdS0@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-56015-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56015
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-01-17
Component|fortran |middle-end
Summary|Option -ffast-math reveals |expand expands p[9] =
|i*(a+bi) -> -b-bi, a |COMPLEX_EXPR
|complex multiplication bug |<-IMAGPART_EXPR <p[9]>,
| |REALPART_EXPR <p[9]>>;
| |incorrectly.
Ever Confirmed|0 |1
Known to fail|4.4.6, 4.6.3, 4.7.2 |4.3.5, 4.4.5, 4.8.0
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2013-01-17 08:52:25 UTC ---
Actually it is not the multiplication that goes wrong. In fact the code looks
correct before expand. Turning off TER (-fno-tree-ter) will work around this
expand issue though.
next prev parent reply other threads:[~2013-01-17 8:52 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-17 8:40 [Bug fortran/56015] New: Option -ffast-math reveals i*(a+bi) -> -b-bi, a complex multiplication bug t_nissie at yahoo dot co.jp
2013-01-17 8:52 ` pinskia at gcc dot gnu.org [this message]
2013-01-17 10:30 ` [Bug middle-end/56015] [4.6/4.7/4.8 Regression] expand expands p[9] = COMPLEX_EXPR <-IMAGPART_EXPR <p[9]>, REALPART_EXPR <p[9]>>; incorrectly jakub at gcc dot gnu.org
2013-01-17 10:31 ` jakub at gcc dot gnu.org
2013-01-17 10:48 ` rguenth at gcc dot gnu.org
2013-01-17 11:58 ` t_nissie at yahoo dot co.jp
2013-01-18 17:15 ` jakub at gcc dot gnu.org
2013-01-18 17:26 ` [Bug middle-end/56015] [4.6/4.7 " jakub at gcc dot gnu.org
2013-02-01 14:11 ` jakub at gcc dot gnu.org
2013-02-01 14:32 ` [Bug middle-end/56015] [4.6 " jakub at gcc dot gnu.org
2013-04-03 18:20 ` jakub at gcc dot gnu.org
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