Messages in this thread | | | From | "Ma, Ling" <> | Date | Wed, 11 Nov 2009 15:57:31 +0800 | Subject | RE: [PATCH RFC] [X86] performance improvement for memcpy_64.S by fast string. |
| |
Hi Ingo
This program is for 64bit version, so please use 'cc -o memcpy memcpy.c -O2 -m64'
Thanks Ling
>-----Original Message----- >From: Ingo Molnar [mailto:mingo@elte.hu] >Sent: 2009年11月11日 15:19 >To: Ma, Ling >Cc: H. Peter Anvin; Ingo Molnar; Thomas Gleixner; linux-kernel >Subject: Re: [PATCH RFC] [X86] performance improvement for memcpy_64.S by fast >string. > > >* Ma, Ling <ling.ma@intel.com> wrote: > >> Hi All >> Please use the memcpy.c(cc -o memcpy memcpy.c -O2) to test more cases, >> if you have interest. In this program we did simple modification >> on memcpy_new function. > >FYI: > >earth4:~/s> cc -o memcpy memcpy.c -O2 >memcpy.c: In function 'do_one_throughput': >memcpy.c:45: error: impossible register constraint in 'asm' >memcpy.c:53: error: impossible register constraint in 'asm' >memcpy.c:47: error: impossible register constraint in 'asm' >memcpy.c:53: error: impossible register constraint in 'asm' > > Ingo
| |