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[Bug rtl-optimization/37512] Useless instructions in member call by pointer



------- Comment #2 from 9ugsa9j02 at sneakemail dot com  2008-09-14 11:17 -------
Subject: Re:  Useless instructions in member call
 by pointer

pinskia at gcc dot gnu dot org gcc-bugzilla-at-gcc.gnu.org |Forums| wrote:
> ------- Comment #1 from pinskia at gcc dot gnu dot org  2008-09-14 02:01 -------
> Fixed on the trunk by the new register allocator (IRA):
> __Z6callfnP1AMS_FvvE:
> LFB0:
>         pushq   %rbp
> LCFI0:
>         testb   $1, %sil
>         movq    %rsi, %r11
>         movq    %rsp, %rbp
> LCFI1:
>         movq    %rsi, -16(%rbp)	<--- ?
>         movq    %rdx, -8(%rbp)	<--- ?
>         je      L3
>         movq    (%rdi,%rdx), %rax
>         movq    -1(%rsi,%rax), %r11
> L3:
>         addq    %rdx, %rdi
>         leave
>         jmp     *%r11

Ok, so that fixes the extra register store. Why is it still creating a
stack temporary?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37512


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