From e12d05910eaffcc746f6f3be59df3ca511179037 Mon Sep 17 00:00:00 2001 From: rakdver Date: Thu, 23 Sep 2004 12:21:31 +0000 Subject: * cfgloop.h (update_single_exits_after_duplication): Declare. (loopify, split_loop_bb): Declaration changed. * cfgloopmanip.c (split_loop_bb): Take void * as an argument instead of rtx. (loopify): Added redirect_all_edges argument. (update_single_exits_after_duplication): Export. * loop-unswitch.c (unswitch_loop): Changed due to loopify change. * tree-flow.h (tree_duplicate_loop_to_header_edge, tree_ssa_loop_version): Declare. * tree-ssa-loop-manip.c (copy_phi_node_args, rename_variables, set_phi_def_stmts, tree_duplicate_loop_to_header_edge, lv_adjust_loop_header_phi, lv_adjust_loop_entry_edge, lv_update_pending_stmts, tree_ssa_loop_version): New functions. * tree-ssa-loop-unswitch.c: New file. * Makefile.in (tree-ssa-loop-unswitch.o): Add. * timevar.def (TV_TREE_LOOP_UNSWITCH): New timevar. * tree-flow.h (tree_ssa_unswitch_loops): Declare. * tree-optimize.c (init_tree_optimization_passes): Add pass_unswitch. * tree-pass.h (pass_unswitch): Declare. * tree-ssa-loop.c (tree_ssa_loop_unswitch, gate_tree_ssa_loop_unswitch, pass_unswitch): New pass. * doc/passes.texi: Documen tree level loop unswitching. * gcc.dg/tree-ssa/loop-6.c: New test. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@87943 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/tree-ssa-loop.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) (limited to 'gcc/tree-ssa-loop.c') diff --git a/gcc/tree-ssa-loop.c b/gcc/tree-ssa-loop.c index 2f87d87bacd..19f784d9bbf 100644 --- a/gcc/tree-ssa-loop.c +++ b/gcc/tree-ssa-loop.c @@ -159,6 +159,40 @@ struct tree_opt_pass pass_lim = 0 /* letter */ }; +/* Loop unswitching pass. */ + +static void +tree_ssa_loop_unswitch (void) +{ + if (!current_loops) + return; + + tree_ssa_unswitch_loops (current_loops); +} + +static bool +gate_tree_ssa_loop_unswitch (void) +{ + return flag_unswitch_loops != 0; +} + +struct tree_opt_pass pass_unswitch = +{ + "unswitch", /* name */ + gate_tree_ssa_loop_unswitch, /* gate */ + tree_ssa_loop_unswitch, /* execute */ + NULL, /* sub */ + NULL, /* next */ + 0, /* static_pass_number */ + TV_TREE_LOOP_UNSWITCH, /* tv_id */ + PROP_cfg, /* properties_required */ + 0, /* properties_provided */ + 0, /* properties_destroyed */ + 0, /* todo_flags_start */ + TODO_dump_func, /* todo_flags_finish */ + 0 /* letter */ +}; + /* Loop autovectorization. */ static void -- cgit v1.2.1