[Bug target/57571] linux kernel function memcpy() execute with low efficiency on Intel Ivybridge platform

[yiyi8761 at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57571

--- Comment #3 from phoenix <yiyi8761 at gmail dot com> ---
1. "Can you provide the preprocessed source"

Sorry,I trace the linux source code, the kernel used __builtin___memcpy() to
replace memcpy(). I can't find the __builtin___memcpy() source code in the
linux source code. It seems it is processed by GCC. 

2. "the kernel is not generating memcpy at runtime?"

Could you give me a little explanation about this? Thank you very much!