ChangeLog:
* lower-subreg.c (enum classify_move_insn): Rename
SIMPLE_PSEUDO_REG_MOVE to DECOMPOSABLE_SIMPLE_MOVE.
(find_decomposable_subregs): Update.
(decompose_multiword_subregs): Add DECOMPOSE_COPIES parameter.
Only mark pseudo-to-pseudo copies as DECOMPOSABLE_SIMPLE_MOVE
if that parameter is true.
(rest_of_handle_lower_subreg): Call decompose_multiword_subregs
with DECOMPOSE_COPIES false.
(rest_of_handle_lower_subreg2): Call decompose_multiword_subregs
with DECOMPOSE_COPIES true.
testsuite/ChangeLog:
* gcc.dg/lower-subreg-1.c: Disable on arm-*-* targets.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@191805 138bc75d-0d04-0410-961f-82ee72b054a4