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| author | Zdenek Dvorak <dvorakz@suse.cz> | 2007-04-09 08:51:43 +0200 |
|---|---|---|
| committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2007-04-09 06:51:43 +0000 |
| commit | c7b852c8a60d46ba79c50b9d2a4f3cba4847c896 (patch) | |
| tree | f5af72013d20563b8340bcf3462e935b8ad07bef /gcc/tree-ssa-loop-manip.c | |
| parent | 782c9150c34a05791f425af5af81c8198cf49176 (diff) | |
| download | gcc-c7b852c8a60d46ba79c50b9d2a4f3cba4847c896.tar.gz | |
cfgloopmanip.c (create_preheader): Do not use loop_preheader_edge.
* cfgloopmanip.c (create_preheader): Do not use loop_preheader_edge.
(create_preheaders): Check that loops are available.
(fix_loop_structure): Clean up, improve comments.
* tree-ssa-loop-manip.c (rewrite_into_loop_closed_ssa):
Check that loops are available. Set LOOP_CLOSED_SSA to the loops
state flags.
* tree-scalar-evolution.c (scev_finalize): Clear scalar_evolution_info.
* predict.c (tree_estimate_probability): Do not call
calculate_dominance_info. Call create_preheaders.
* tree-cfgcleanup.c (cleanup_tree_cfg_loop): Only call
rewrite_into_loop_closed_ssa if LOOP_CLOSED_SSA is set in loops state
flags.
* cfgloop.c (loop_preheader_edge): Assert that loops have preheaders.
* cfgloop.h (LOOP_CLOSED_SSA): New constant.
* tree-cfg.c (tree_split_edge): Make an assert more precise.
* tree-ssa-threadedge.c (thread_across_edge): Comment the function
arguments.
From-SVN: r123670
Diffstat (limited to 'gcc/tree-ssa-loop-manip.c')
| -rw-r--r-- | gcc/tree-ssa-loop-manip.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/gcc/tree-ssa-loop-manip.c b/gcc/tree-ssa-loop-manip.c index bce9890d6a4..30f853469fc 100644 --- a/gcc/tree-ssa-loop-manip.c +++ b/gcc/tree-ssa-loop-manip.c @@ -355,10 +355,16 @@ find_uses_to_rename (bitmap changed_bbs, bitmap *use_blocks, bitmap need_phis) void rewrite_into_loop_closed_ssa (bitmap changed_bbs, unsigned update_flag) { - bitmap loop_exits = get_loops_exits (); + bitmap loop_exits; bitmap *use_blocks; unsigned i, old_num_ssa_names; - bitmap names_to_rename = BITMAP_ALLOC (NULL); + bitmap names_to_rename; + + if (!current_loops) + return; + + loop_exits = get_loops_exits (); + names_to_rename = BITMAP_ALLOC (NULL); /* If the pass has caused the SSA form to be out-of-date, update it now. */ @@ -383,6 +389,8 @@ rewrite_into_loop_closed_ssa (bitmap changed_bbs, unsigned update_flag) /* Fix up all the names found to be used outside their original loops. */ update_ssa (TODO_update_ssa); + + current_loops->state |= LOOP_CLOSED_SSA; } /* Check invariants of the loop closed ssa form for the USE in BB. */ |