Fix CopyRegInfo to keep live/dirty flags of new registers.

CopyRegInfo should not change live/dirty flags of new registgers.
Otherwise, it will lead to incorrectly clobbering these live registers
that are not live actually, and then allocating them to another usage.

Change-Id: Ia9f055b33a11a6d70c0aca1a9fe8639ecfb09464
Signed-off-by: Chao-ying Fu <chao-ying.fu@intel.com>
3 files changed