* regmove.c (perhaps_ends_bb_p): Remove.
(optimize_reg_copy_1): Don't call perhaps_ends_bb_p. Get basic block
from INSN and check that the main loop stays within that basic block.
(optimize_reg_copy_1, optimize_reg_copy_3, fixup_match_2): Likewise.
(regmove_forward_pass): Split out from regmove_optimize. Use
FOR_EACH_BB and FOR_BB_INSNS instead of traversing the insns stream.
(regmove_backward_pass): Split out from regmove_optimize. Use
FOR_EACH_BB_REVERSE and FOR_BB_INSNS_REVERS_SAFE.
(regmove_optimize): Simplify.
From-SVN: r145247
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