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| author | Bill Schmidt <wschmidt@linux.vnet.ibm.com> | 2012-02-29 13:06:28 +0000 |
|---|---|---|
| committer | William Schmidt <wschmidt@gcc.gnu.org> | 2012-02-29 13:06:28 +0000 |
| commit | 529b39d8ab7bb1902dc4c77c77194525cfe77adf (patch) | |
| tree | e3fe327c871ceaf3b256317d449503f46052fa01 /gcc/tree-ssa-dom.c | |
| parent | 43c626f04fef67a60ada8310f0479391fa918dff (diff) | |
| download | gcc-529b39d8ab7bb1902dc4c77c77194525cfe77adf.tar.gz | |
re PR tree-optimization/52424 (dom prematurely pops entries from const_and_copies stack)
2012-02-29 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR tree-optimization/52424
* tree-ssa-dom.c (dom_opt_leave_block): Push a marker before
calling dom_thread_across_edge.
From-SVN: r184662
Diffstat (limited to 'gcc/tree-ssa-dom.c')
| -rw-r--r-- | gcc/tree-ssa-dom.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/tree-ssa-dom.c b/gcc/tree-ssa-dom.c index a9a658f2c44..4ea9644dd27 100644 --- a/gcc/tree-ssa-dom.c +++ b/gcc/tree-ssa-dom.c @@ -1779,6 +1779,9 @@ dom_opt_leave_block (struct dom_walk_data *walk_data, basic_block bb) && (single_succ_edge (bb)->flags & EDGE_ABNORMAL) == 0 && potentially_threadable_block (single_succ (bb))) { + /* Push a marker on the stack, which thread_across_edge expects + and will remove. */ + VEC_safe_push (tree, heap, const_and_copies_stack, NULL_TREE); dom_thread_across_edge (walk_data, single_succ_edge (bb)); } else if ((last = last_stmt (bb)) |