Re: [LAD] Bit shift
Will Godfrey:
> Does anyone know if GCC will replace power of 2 multiplications/divisions of
> unsigned integers with bit shifts?
Test on your system:
$ cat a.c
#include
int main(int argc, char *argv[]) {
uint16_t b = argc * 2;
return b;
}
$ gcc -S a.c
$ cat a.s
...
main:
.LFB0:
.cfi_startproc
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset 6, -16
movq%rsp, %rbp
.cfi_def_cfa_register 6
movl%edi, -20(%rbp)
movq%rsi, -32(%rbp)
movl-20(%rbp), %eax
addl%eax, %eax
movw%ax, -2(%rbp)
movzwl -2(%rbp), %eax
popq%rbp
.cfi_def_cfa 7, 8
ret
.cfi_endproc
...
$
It seems it just adds the value with itself here.
Regards,
/Karl Hammar
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[LAD] Bit shift
Does anyone know if GCC will replace power of 2 multiplications/divisions of unsigned integers with bit shifts? -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song. ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org https://lists.linuxaudio.org/listinfo/linux-audio-dev
[LAD] [ANN] B.Slizr v0.4 (formerly known as B.Slicer)
Hello,
a new version of B.Slizr ((formerly known as B.Slicer) - a sequenced
audio slicing effect LV2 plugin ("step sequencer effect")* - is out now.
GPLv3 license.
What's new:
* Rename
* Resizable GUI
* Bidirectional amp display
* Update BWidgets toolkit
* Bugfix
* Jack transport still required
Feedback, ideas, bug reports, ... welcome.
*Still thinking about the best description of this plugin. Any ideas are
welcome.
Project page:
https://github.com/sjaehn/BSlizr
Releases:
https://github.com/sjaehn/BSlizr/releases
Preview video (based on v0.1):
https://www.youtube.com/watch?v=1VD3KsXvyLU
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