K 10
svn:author
V 3
mjg
K 8
svn:date
V 27
2020-01-30T19:56:22.194536Z
K 7
svn:log
V 166
amd64: speed up failing case for memcmp

Instead of branching on up to 8 bytes, drop the size to 4.

Assorted clean ups while here.

Validated with glibc test suite.

END