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| author | Michael Matz <matz@gcc.gnu.org> | 2012-01-26 13:24:58 +0000 |
|---|---|---|
| committer | Michael Matz <matz@gcc.gnu.org> | 2012-01-26 13:24:58 +0000 |
| commit | 1a47f99c0f033b16594eaabac4e6dbc4c5c58554 (patch) | |
| tree | 0e78fd6f3d83e39d28a6a95ef13ede7c57ee9c92 /gcc/tree-eh.c | |
| parent | c0a9d2a12ec96a90e41998f34d036c4281d91797 (diff) | |
| download | gcc-1a47f99c0f033b16594eaabac4e6dbc4c5c58554.zip gcc-1a47f99c0f033b16594eaabac4e6dbc4c5c58554.tar.gz gcc-1a47f99c0f033b16594eaabac4e6dbc4c5c58554.tar.bz2 | |
re PR tree-optimization/48794 (ICE: SIGSEGV in remap_eh_region_nr (tree-inline.c:1194) with -Os -fopenmp -fexceptions -fno-tree-ccp -fno-tree-copy-prop)
PR tree-optimization/48794
* tree-eh.c (remove_unreachable_handlers_no_lp): Don't remove
regions referenced from RESX/EH_DISPATCH.
testsuite/
* gfortran.dg/gomp/pr48794-2.f90: New testcase.
From-SVN: r183559
Diffstat (limited to 'gcc/tree-eh.c')
| -rw-r--r-- | gcc/tree-eh.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/gcc/tree-eh.c b/gcc/tree-eh.c index cad37e6..2064d51 100644 --- a/gcc/tree-eh.c +++ b/gcc/tree-eh.c @@ -3617,14 +3617,40 @@ remove_unreachable_handlers_no_lp (void) { eh_region r; int i; + sbitmap r_reachable; + basic_block bb; + + r_reachable = sbitmap_alloc (VEC_length (eh_region, cfun->eh->region_array)); + sbitmap_zero (r_reachable); + + FOR_EACH_BB (bb) + { + gimple stmt = last_stmt (bb); + if (stmt) + /* Avoid removing regions referenced from RESX/EH_DISPATCH. */ + switch (gimple_code (stmt)) + { + case GIMPLE_RESX: + SET_BIT (r_reachable, gimple_resx_region (stmt)); + break; + case GIMPLE_EH_DISPATCH: + SET_BIT (r_reachable, gimple_eh_dispatch_region (stmt)); + break; + default: + break; + } + } for (i = 1; VEC_iterate (eh_region, cfun->eh->region_array, i, r); ++i) - if (r && r->landing_pads == NULL && r->type != ERT_MUST_NOT_THROW) + if (r && r->landing_pads == NULL && r->type != ERT_MUST_NOT_THROW + && !TEST_BIT (r_reachable, i)) { if (dump_file) fprintf (dump_file, "Removing unreachable region %d\n", i); remove_eh_handler (r); } + + sbitmap_free (r_reachable); } /* Undo critical edge splitting on an EH landing pad. Earlier, we |