diff options
| author | Jan Hubicka <jh@suse.cz> | 2012-01-01 12:07:34 +0000 |
|---|---|---|
| committer | Jan Hubicka <jh@suse.cz> | 2012-01-01 12:07:34 +0000 |
| commit | 612aaa7436df20f4e7369a877bc3f743291a7390 (patch) | |
| tree | 40cd72a170f39bf112cfdf721c006d95af80120b /gcc/cfgloopmanip.c | |
| parent | 3a1475e7d73bf1b2432ecde62b89409cca7a0d67 (diff) | |
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.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@182767 138bc75d-0d04-0410-961f-82ee72b054a4
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 1824421f616..967541756b5 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)) |