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| author | Richard Biener <rguenther@suse.de> | 2018-11-20 12:18:58 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2018-11-20 12:18:58 +0000 |
| commit | c1d21cd17bce162e7afac5a1849d193952221ce8 (patch) | |
| tree | 863cd0e7dcc110deef48aa27676d296ec8b95768 /gcc/tree-ssa-dom.c | |
| parent | b613740815fa921b1210f87aed3d01a00a59e8bf (diff) | |
| download | gcc-c1d21cd17bce162e7afac5a1849d193952221ce8.zip gcc-c1d21cd17bce162e7afac5a1849d193952221ce8.tar.gz gcc-c1d21cd17bce162e7afac5a1849d193952221ce8.tar.bz2 | |
re PR tree-optimization/88074 (g++ hangs on math expression)
2018-11-20 Richard Biener <rguenther@suse.de>
PR tree-optimization/88074
* tree-ssa-dom.c (pass_dominator::execute): Do not walk
backedges.
* gcc.dg/pr88074.c: New testcase.
From-SVN: r266313
Diffstat (limited to 'gcc/tree-ssa-dom.c')
| -rw-r--r-- | gcc/tree-ssa-dom.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/tree-ssa-dom.c b/gcc/tree-ssa-dom.c index c50618d..7787da8 100644 --- a/gcc/tree-ssa-dom.c +++ b/gcc/tree-ssa-dom.c @@ -777,7 +777,8 @@ pass_dominator::execute (function *fun) if (bb == NULL) continue; while (single_succ_p (bb) - && (single_succ_edge (bb)->flags & EDGE_EH) == 0) + && (single_succ_edge (bb)->flags + & (EDGE_EH|EDGE_DFS_BACK)) == 0) bb = single_succ (bb); if (bb == EXIT_BLOCK_PTR_FOR_FN (fun)) continue; |