c2c47e8ff4
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. From-SVN: r191805
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