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| author | Richard Biener <rguenther@suse.de> | 2016-01-11 16:02:23 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2016-01-11 16:02:23 +0000 |
| commit | 62446e6e25e2483e1ec5c3bfb119833fab0dd218 (patch) | |
| tree | 5d7520898bbd7542c9de33d1ab99f3bdea430f87 /gcc/tree-vect-loop.c | |
| parent | 3a28db463b4d0ce7ee87a85ab2dbcb68eda9ef22 (diff) | |
| download | gcc-62446e6e25e2483e1ec5c3bfb119833fab0dd218.zip gcc-62446e6e25e2483e1ec5c3bfb119833fab0dd218.tar.gz gcc-62446e6e25e2483e1ec5c3bfb119833fab0dd218.tar.bz2 | |
re PR tree-optimization/69173 (ICE (segfault) in vinfo_for_stmt)
2016-01-11 Richard Biener <rguenther@suse.de>
PR tree-optimization/69173
* tree-vect-loop.c (vect_fixup_scalar_cycles_with_patterns): Only
fixup the cycle if all stmts are in a pattern.
* gcc.dg/torture/pr69173.c: New testcase.
From-SVN: r232230
Diffstat (limited to 'gcc/tree-vect-loop.c')
| -rw-r--r-- | gcc/tree-vect-loop.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c index a82cf26..a797f70 100644 --- a/gcc/tree-vect-loop.c +++ b/gcc/tree-vect-loop.c @@ -985,9 +985,21 @@ vect_fixup_scalar_cycles_with_patterns (loop_vec_info loop_vinfo) FOR_EACH_VEC_ELT (LOOP_VINFO_REDUCTION_CHAINS (loop_vinfo), i, first) if (STMT_VINFO_IN_PATTERN_P (vinfo_for_stmt (first))) { - vect_fixup_reduc_chain (first); - LOOP_VINFO_REDUCTION_CHAINS (loop_vinfo)[i] - = STMT_VINFO_RELATED_STMT (vinfo_for_stmt (first)); + gimple *next = GROUP_NEXT_ELEMENT (vinfo_for_stmt (first)); + while (next) + { + if (! STMT_VINFO_IN_PATTERN_P (vinfo_for_stmt (next))) + break; + next = GROUP_NEXT_ELEMENT (vinfo_for_stmt (next)); + } + /* If not all stmt in the chain are patterns try to handle + the chain without patterns. */ + if (! next) + { + vect_fixup_reduc_chain (first); + LOOP_VINFO_REDUCTION_CHAINS (loop_vinfo)[i] + = STMT_VINFO_RELATED_STMT (vinfo_for_stmt (first)); + } } } |