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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/17958] expand_divmod fails to optimize division of 64-bit quantity by small constant when BITS_PER_WORD is 32
Date: Tue, 12 Oct 2004 22:55:00 -0000 [thread overview]
Message-ID: <20041012225537.23223.qmail@sourceware.org> (raw)
In-Reply-To: <20041012224816.17958.zack@gcc.gnu.org>
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-10-12 22:55 -------
not all constants though (power of 2 are fine) for an example 16:
mr r12,r3
srawi r11,r3,31
srawi r9,r11,31
srawi r10,r11,31
srwi r10,r9,28
li r9,0
addc r12,r10,r4
adde r11,r9,r3
srwi r4,r12,4
insrwi r4,r11,4,0
srawi r3,r11,4
Confirmed.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Component|rtl-optimization |middle-end
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2004-10-12 22:55:35
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17958
next prev parent reply other threads:[~2004-10-12 22:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-12 22:48 [Bug rtl-optimization/17958] New: " zack at gcc dot gnu dot org
2004-10-12 22:55 ` pinskia at gcc dot gnu dot org [this message]
[not found] <bug-17958-4@http.gcc.gnu.org/bugzilla/>
2012-06-12 20:52 ` [Bug middle-end/17958] " pinskia at gcc dot gnu.org
2021-05-04 12:32 ` rguenth at gcc dot gnu.org
2021-08-15 12:14 ` pinskia at gcc dot gnu.org
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