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    SubjectRe: [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


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