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PR optimization/12630 * pa.c (compute_movstrsi_length): Rename to compute_movstr_length. Handle length computation 64-bit moves. (compute_clrstr_length, output_block_clear): Implement block clear. (output_block_move): Handle 64-bit moves. (pa_adjust_insn_length): Use compute_movstr_length and compute_clrstr_length. * pa.md (movstrsi): Revise operand order and comments. Don't use match_scratch. (movstrsi_internal): Delete. (movstrsi_prereload, movstrsi_postreload): New insns. Define splitter and peephole2 patterns to transform prereload to postreload form. (movstrdi, movstrdi_prereload, movstrdi_postreload, clrstrsi, clrstrsi_prereload, clrstrsi_postreload, clrstrdi, clrstrdi_prereload, clrstrdi_postreload): New patterns for 64-bit block move, and block clear. * pa-protos.h (output_block_clear): New prototype. From-SVN: r73375
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