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[Bug c++/15036] [3.4 regression] Performance and code size regression compared to 3.3

From: "rth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
To: gcc-bugs at gcc dot gnu dot org
Date: 31 Mar 2005 21:53:34 -0000
Subject: [Bug c++/15036] [3.4 regression] Performance and code size regression compared to 3.3
References: <20040421083201.15036.martin@mpa-garching.mpg.de>
Reply-to: gcc-bugzilla at gcc dot gnu dot org

------- Additional Comments From rth at gcc dot gnu dot org  2005-03-31 21:53 -------
The code generated by gcc 4.0 is significantly improved:

.L2:
        fldl    -8(%ebx,%ecx,8)
        incl    %ecx
        fld     %st(0)
        fmull   (%edx)
        fxch    %st(1)
        fmull   8(%edx)
        fxch    %st(1)
        addl    $16, %edx
        fstpl   (%eax)
        fstpl   8(%eax)
        addl    $16, %eax
        cmpl    $1001, %ecx
        jne     .L2

I have no plans to address this for the 3.4 branch.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |WONTFIX
   Target Milestone|3.4.4                       |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15036

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