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| author | Richard Biener <rguenther@suse.de> | 2017-06-14 07:22:32 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2017-06-14 07:22:32 +0000 |
| commit | 24d020bd46fc94b262af4f729aff24fb4ee8aca3 (patch) | |
| tree | 1607da50b4bc65f431ea6c5f2f50e41e6995f8a6 /gcc/tree-ssa-sccvn.c | |
| parent | 6aa397703c5802b14cbd00c1fd8cfd0b7c15934e (diff) | |
| download | gcc-24d020bd46fc94b262af4f729aff24fb4ee8aca3.zip gcc-24d020bd46fc94b262af4f729aff24fb4ee8aca3.tar.gz gcc-24d020bd46fc94b262af4f729aff24fb4ee8aca3.tar.bz2 | |
re PR tree-optimization/81083 (ICE: Unable to coalesce ssa_names 4 and 13 which are marked as MUST COALESCE)
2017-06-14 Richard Biener <rguenther@suse.de>
PR tree-optimization/81083
* tree-ssa-sccvn.c (vn_reference_lookup_3): Do not use abnormals
as values.
* gcc.dg/torture/pr81083.c: New testcase.
From-SVN: r249182
Diffstat (limited to 'gcc/tree-ssa-sccvn.c')
| -rw-r--r-- | gcc/tree-ssa-sccvn.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c index ff5c800..419da47 100644 --- a/gcc/tree-ssa-sccvn.c +++ b/gcc/tree-ssa-sccvn.c @@ -2035,7 +2035,9 @@ vn_reference_lookup_3 (ao_ref *ref, tree vuse, void *vr_, ops[1] = bitsize_int (ref->size); ops[2] = bitsize_int (offset - offset2); tree val = vn_nary_build_or_lookup (rcode, vr->type, ops); - if (val) + if (val + && (TREE_CODE (val) != SSA_NAME + || ! SSA_NAME_OCCURS_IN_ABNORMAL_PHI (val))) { vn_reference_t res = vn_reference_lookup_or_insert_for_pieces (vuse, vr->set, vr->type, vr->operands, val); |