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| author | Richard Guenther <rguenther@suse.de> | 2009-02-10 14:54:13 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2009-02-10 14:54:13 +0000 |
| commit | 7cae94fcba3cc400194fdf025c4b636838d2d12d (patch) | |
| tree | 3dc3892cf084cf9a20ddafc9cb440422e5bd6f08 /gcc/tree-loop-distribution.c | |
| parent | a8800687f548b183c6c28492e2ff455b606d828c (diff) | |
| download | gcc-7cae94fcba3cc400194fdf025c4b636838d2d12d.tar.gz | |
re PR tree-optimization/39132 (wrong code generated with -ftree-loop-disttribution)
2009-02-10 Richard Guenther <rguenther@suse.de>
PR tree-optimization/39132
* tree-loop-distribution.c (todo): New global var.
(generate_memset_zero): Trigger TODO_rebuild_alias.
(tree_loop_distribution): Return todo.
* gcc.dg/torture/pr39132.c: New testcase.
From-SVN: r144060
Diffstat (limited to 'gcc/tree-loop-distribution.c')
| -rw-r--r-- | gcc/tree-loop-distribution.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/tree-loop-distribution.c b/gcc/tree-loop-distribution.c index 8eca7c02166..080eceacb55 100644 --- a/gcc/tree-loop-distribution.c +++ b/gcc/tree-loop-distribution.c @@ -77,6 +77,9 @@ static bitmap remaining_stmts; predecessor a node that writes to memory. */ static bitmap upstream_mem_writes; +/* TODOs we need to run after the pass. */ +static unsigned int todo; + /* Update the PHI nodes of NEW_LOOP. NEW_LOOP is a duplicate of ORIG_LOOP. */ @@ -331,6 +334,8 @@ generate_memset_zero (gimple stmt, tree op0, tree nb_iter, if (dump_file && (dump_flags & TDF_DETAILS)) fprintf (dump_file, "generated memset zero\n"); + todo |= TODO_rebuild_alias; + end: free_data_ref (dr); return res; @@ -1206,6 +1211,8 @@ tree_loop_distribution (void) loop_iterator li; int nb_generated_loops = 0; + todo = 0; + FOR_EACH_LOOP (li, loop, 0) { VEC (gimple, heap) *work_list = VEC_alloc (gimple, heap, 3); @@ -1237,7 +1244,7 @@ tree_loop_distribution (void) VEC_free (gimple, heap, work_list); } - return 0; + return todo; } static bool |