Support any cpu register sequence in LoadArgRegs

The LoadArgRegs was designed only for case when
arg1.reg < arg2.reg < arg3.reg which is not true for x86_64 ABI.
Now LoadArgRegs supports three args passed by any cpu register.

Change-Id: I62f58c47ec12b8e3f8124724cb3b5371dde8173f
Signed-off-by: Dmitry Petrochenko <dmitry.petrochenko@intel.com>
1 file changed