http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57571
--- Comment #5 from phoenix ---
(In reply to Jakub Jelinek from comment #4)
> Have you actually measured any slowdown, or you just think that rep movsd
> must be 8 times faster than rep movsb?
Yes, actually I first measured the Flash Read(which ex
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57571
--- Comment #3 from phoenix ---
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
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57571
--- Comment #1 from phoenix ---
Sorry, correct a description, GCC 4.3.4's configuration is wrong.
GCC 4.3.4 Configured with: ../configure --prefix=/usr --infodir=/usr/share/info
--mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64
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Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: yiyi8761 at gmail dot com
OS type: OpenSuse 12.3 or SUSE 11 SP2
CPU type: Intel Ivybridge i7-3612QE or Intel Ivybridge i7-3615QE
GCC Ver: 4.7.2(Open Suse 12.3) or 4.3.4
