AArch64 - Improve MOVI handling (1/5)

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@199652 138bc75d-0d04-0410-961f-82ee72b054a4
AArch64 - Improve MOVI handling (2/5)

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@199653 138bc75d-0d04-0410-961f-82ee72b054a4