expr.c (emit_block_move_via_libcall): Export.

	* 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

1 files changed, 3 insertions, 0 deletions

diff --git a/gcc/expr.h b/gcc/expr.h
index 42b9893..beb8ea3 100644
--- a/gcc/expr.h
+++ b/gcc/expr.h
@@ -377,6 +377,7 @@ extern void init_block_move_fn (const char *);
 extern void init_block_clear_fn (const char *);
 
 extern rtx emit_block_move (rtx, rtx, rtx, enum block_op_methods);
+extern rtx emit_block_move_via_libcall (rtx, rtx, rtx, bool);
 
 /* Copy all or part of a value X into registers starting at REGNO.
    The number of registers to be filled is NREGS.  */
@@ -423,6 +424,8 @@ extern void use_group_regs (rtx *, rtx);
 /* Write zeros through the storage of OBJECT.
    If OBJECT has BLKmode, SIZE is its length in bytes.  */
 extern rtx clear_storage (rtx, rtx, enum block_op_methods);
+/* The same, but always output an library call.  */
+rtx set_storage_via_libcall (rtx, rtx, rtx, bool);
 
 /* Expand a setmem pattern; return true if successful.  */
 extern bool set_storage_via_setmem (rtx, rtx, rtx, unsigned int);