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* expr.c (emit_block_move_via_libcall): Export. (clear_storage_via_libcall): Rename to ... (set_storage_via_libcall): ... this one; handle arbitrary value to set. (clear_storage): Update to set_storage_via_libcall. * expr.h (emit_block_move_via_libcall): Declare * config/i386/i386.h (stringop_alg): New enum. (MAX_STRINGOP_ALGS): New constant. (stringop_algs): New struct. (processor_costs): Add memcpy/memset descriptors. (TARGET_REP_MOVEL_OPTIMAL): Remove. * config/i386/i386.md (movsi_insv_1_rex64): New pattern. (strmovsi, strmovdi, strsetsi, strsetdi): Update; accept all operands for memset. * config/i386/i386.opt (minline-stringops-dynamically, mstringop-strategy): New parameters. * config/i386/i386-prostos.h (ix86_expand_movmem): Update prototype. (ix86_expand-clrmem): Rename to ... (ix86_expand_setmem): ... this one; update prototype. * config/i386/i386.c (DUMMY_STRINGOP_ALGS): New constant. (size_cost, i386_cost, i486_cost, pentium_cost, pentiumpro_cost, geode_cost, k6_cost, athlon_cost, k8_cost, pentium4_cost, nocona_cost, core2_cost, generic_cost, generic64_cost, generic32_cost): Add memcpy/memset descriptors. (x86_rep_movl_optimal): Remove. (stringop_alg): New static variable. (ix86_expand_aligntest): Handle predictions. (override_options): Add strgop_alg handling. (predict_jump): New function. (scale_counter): New function. (expand_set_or_movmem_via_loop): New function. (expand_movmem_via_rep_mov): New function. (expand_setmem_via_rep_stots): New function. (emit_strmov): New function. (expand_movmem_epilogue): New function. (expand_setmem_epilogue_via_loop): New function. (expand_setmem_epilogue): New function. (expand_movmem_prologue): New function. (expand_setmem_prologue): New function. (decide_alg): New function. (decide_alignment): New function. (ix86_exand_movmem): Rewrite. (promote_duplicated_reg): New function. (ix86_expand_clrmem): Rename to ... (ix86_expand_setmem): ... this one. Rewrite. * invoke.texi (minline-stringops-dynamically): New command line option. (mstringop-strategy): Likewise. From-SVN: r119252
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