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From: "giovannibajo at libero dot it" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/17236] inefficient code for long long multiply on x86
Date: Tue, 15 Mar 2005 10:05:00 -0000	[thread overview]
Message-ID: <20050315100456.22437.qmail@sourceware.org> (raw)
In-Reply-To: <20040830055039.17236.dann@godzilla.ics.uci.edu>


------- Additional Comments From giovannibajo at libero dot it  2005-03-15 10:04 -------
Roger explains what else needs to be done here:
http://gcc.gnu.org/ml/gcc-patches/2005-03/msg01386.html

Right now, after his patch, mainline generates this code:

        pushl   %edi
        pushl   %esi
        pushl   %ebx
        movl    16(%esp), %eax
        movl    20(%esp), %edx
        movl    24(%esp), %ecx
        movl    28(%esp), %ebx
        movl    %edx, %esi
        imull   %ecx, %esi
        movl    %ebx, %edi
        imull   %eax, %edi
        addl    %edi, %esi
        mull    %ecx
        leal    (%esi,%edx), %edx
        popl    %ebx
        popl    %esi
        popl    %edi
        ret


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17236


  parent reply	other threads:[~2005-03-15 10:05 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-08-30  5:50 [Bug rtl-optimization/17236] New: " dann at godzilla dot ics dot uci dot edu
2004-10-06 23:27 ` [Bug rtl-optimization/17236] " giovannibajo at libero dot it
2005-03-14 18:24 ` cvs-commit at gcc dot gnu dot org
2005-03-15 10:05 ` giovannibajo at libero dot it [this message]
2005-03-15 10:07 ` giovannibajo at libero dot it
     [not found] <bug-17236-1008@http.gcc.gnu.org/bugzilla/>
2007-02-02  0:17 ` roger at eyesopen dot com
2007-11-23 20:48 ` steven at gcc dot gnu dot org
2007-12-18  7:43 ` bonzini at gnu dot org
2007-12-18  7:53 ` bonzini at gnu dot org
2007-12-18  8:05 ` bonzini at gnu dot org
2007-12-18  8:10 ` ebotcazou at gcc dot gnu dot org
2007-12-18 13:48 ` ubizjak at gmail dot com
2007-12-18 16:02 ` bonzini at gnu dot org
2007-12-18 16:39 ` jakub at gcc dot gnu dot org
2007-12-18 16:51 ` bonzini at gnu dot org
2007-12-18 18:20 ` ubizjak at gmail dot com
2007-12-18 18:33 ` ubizjak at gmail dot com
2007-12-19  9:49 ` bonzini at gnu dot org
2007-12-19 12:11 ` ubizjak at gmail dot com
2007-12-19 12:14 ` bonzini at gnu dot org
2007-12-19 12:32 ` bonzini at gnu dot org
2007-12-19 12:43 ` bonzini at gnu dot org
2007-12-19 13:12 ` ubizjak at gmail dot com
2007-12-19 13:36 ` bonzini at gnu dot org
2007-12-19 13:49 ` steven at gcc dot gnu dot org
2007-12-19 13:50 ` bonzini at gnu dot org
2007-12-19 13:54 ` bonzini at gnu dot org
2007-12-20 13:53 ` bonzini at gnu dot org
2007-12-20 14:16 ` bonzini at gnu dot org
2008-03-07  8:27 ` bonzini at gnu dot org
2008-03-07  8:42 ` bonzini at gnu dot org
2008-09-06 16:12 ` ubizjak at gmail dot com
2008-09-06 16:19 ` ubizjak at gmail dot com
2008-09-06 16:20 ` ubizjak at gmail dot com

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