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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 | |
| 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')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/cfgloopmanip.c | 7 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr51069.c | 35 |
4 files changed, 52 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index fec1dec..f0a850d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2012-01-01 Jan Hubicka <jhjh@suse.cz> + + PR rtl-optimization/51069 + * cfgloopmanip.c (remove_path): Removing path making irreducible + region unconditional makes BB part of the region. + 2012-01-01 Jakub Jelinek <jakub@redhat.com> PR tree-optimization/51683 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)) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 6e81414..7cc8411 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2012-01-01 Jan Hubicka <jh@suse.cz> + + PR rtl-optimization/51069 + * gcc.c-torture/compile/pr51069.c: New testcase. + 2012-01-01 Jakub Jelinek <jakub@redhat.com> PR tree-optimization/51683 diff --git a/gcc/testsuite/gcc.c-torture/compile/pr51069.c b/gcc/testsuite/gcc.c-torture/compile/pr51069.c new file mode 100644 index 0000000..4fdc52f --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr51069.c @@ -0,0 +1,35 @@ + +int a, b, c, d, e, f, bar (void); + +void +foo (int x) +{ + for (;;) + { + if (!x) + { + for (d = 6; d >= 0; d--) + { + while (!b) + ; + if (e) + return foo (x); + if (f) + { + a = 0; + continue; + } + for (; c; c--) + ; + } + } + if (bar ()) + break; + e = 0; + if (x) + for (;;) + ; + } +} + + |