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| author | Jan Hubicka <hubicka@gcc.gnu.org> | 2012-01-01 12:07:34 +0000 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2012-01-01 12:07:34 +0000 |
| commit | 06f1716bd710974593f641e76e648fa54ad23c3a (patch) | |
| tree | 40cd72a170f39bf112cfdf721c006d95af80120b /gcc/cfgloopmanip.c | |
| parent | 41d2ea5798472c0ee36c063f654e30fa7138fb0f (diff) | |
| download | gcc-06f1716bd710974593f641e76e648fa54ad23c3a.zip gcc-06f1716bd710974593f641e76e648fa54ad23c3a.tar.gz gcc-06f1716bd710974593f641e76e648fa54ad23c3a.tar.bz2 | |
re PR rtl-optimization/51069 (ICE in verify_loop_structure, at cfgloop.c:1559)
PR rtl-optimization/51069
* cfgloopmanip.c (remove_path): Removing path making irreducible
region unconditional makes BB part of the region.
* gcc.c-torture/compile/pr51069.c: New testcase.
From-SVN: r182767
Diffstat (limited to 'gcc/cfgloopmanip.c')
| -rw-r--r-- | gcc/cfgloopmanip.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/cfgloopmanip.c b/gcc/cfgloopmanip.c index 1824421..9675417 100644 --- a/gcc/cfgloopmanip.c +++ b/gcc/cfgloopmanip.c @@ -290,6 +290,7 @@ remove_path (edge e) int i, nrem, n_bord_bbs; sbitmap seen; bool irred_invalidated = false; + edge_iterator ei; if (!can_remove_branch_p (e)) return false; @@ -329,9 +330,13 @@ remove_path (edge e) /* Find "border" hexes -- i.e. those with predecessor in removed path. */ for (i = 0; i < nrem; i++) SET_BIT (seen, rem_bbs[i]->index); + if (!irred_invalidated) + FOR_EACH_EDGE (ae, ei, e->src->succs) + if (ae != e && ae->dest != EXIT_BLOCK_PTR && !TEST_BIT (seen, ae->dest->index) + && ae->flags & EDGE_IRREDUCIBLE_LOOP) + irred_invalidated = true; for (i = 0; i < nrem; i++) { - edge_iterator ei; bb = rem_bbs[i]; FOR_EACH_EDGE (ae, ei, rem_bbs[i]->succs) if (ae->dest != EXIT_BLOCK_PTR && !TEST_BIT (seen, ae->dest->index)) |