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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/57690] bextr sometimes used instead of shr
Date: Sun, 30 Jun 2013 09:48:00 -0000 [thread overview]
Message-ID: <bug-57690-4-4gqeEGOASu@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-57690-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57690
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-06-30
Ever confirmed|0 |1
--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
For some reason combine simplifies
(zero_extend:DI (lshiftrt:SI (reg:SI 0 ax [orig:65 D.1730 ] [65])
(const_int 2 [0x2]))))
to
(set (reg:DI 0 ax [orig:64 D.1733 ] [64])
(zero_extract:DI (reg:DI 0 ax [orig:59 D.1732 ] [59])
(const_int 30 [0x1e])
(const_int 2 [0x2])))
perhaps correct RTX costs could prevent this transformation for -Os?
>From gcc-bugs-return-425466-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jun 30 11:46:06 2013
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From: "schwab@linux-m68k.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug preprocessor/57760] preprocessor directive supress g++ warning
Date: Sun, 30 Jun 2013 11:46:00 -0000
X-Bugzilla-Reason: CC
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X-Bugzilla-Product: gcc
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Message-ID: <bug-57760-4-nhEvRqIZTM@http.gcc.gnu.org/bugzilla/>
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idW760
Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
Use -Wsystem-headers. The directive marks the following contents as a system
header.
next prev parent reply other threads:[~2013-06-30 9:48 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-23 19:26 [Bug target/57690] New: " jakub at gcc dot gnu.org
2013-06-30 9:48 ` ubizjak at gmail dot com [this message]
2021-07-29 23:35 ` [Bug target/57690] " pinskia at gcc dot gnu.org
2021-12-15 11:54 ` jakub at gcc dot gnu.org
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