K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2011-09-15T09:53:04.408316Z
K 7
svn:log
V 272
Microoptimize the return path for the fast syscalls on amd64. Arrange
the code to have the fall-through path to follow the likely target.
Do not use intermediate register to reload user %rsp.

Proposed by:	alc
Reviewed by:	alc, jhb
Approved by:	re (bz)
MFC after:	2 weeks

END