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| author | Richard Biener <rguenther@suse.de> | 2018-11-14 09:19:28 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2018-11-14 09:19:28 +0000 |
| commit | f711908bf61e39432965db84ed12424cc6f251e1 (patch) | |
| tree | 7e348a03b38fec7de949eb377b67eee3e0502318 /gcc/tree-vect-loop.c | |
| parent | c4071191f4d20d25389181b90c0a24f254a47b87 (diff) | |
| download | gcc-f711908bf61e39432965db84ed12424cc6f251e1.zip gcc-f711908bf61e39432965db84ed12424cc6f251e1.tar.gz gcc-f711908bf61e39432965db84ed12424cc6f251e1.tar.bz2 | |
re PR tree-optimization/87974 (ICE in vect_get_vec_def_for_stmt_copy)
2018-11-14 Richard Biener <rguenther@suse.de>
PR tree-optimization/87974
* tree-vect-loop.c (vectorizable_reduction): When computing
the vectorized reduction PHI vector type ignore constant
and external defs.
* g++.dg/opt/pr87974.C: New testcase.
From-SVN: r266099
Diffstat (limited to 'gcc/tree-vect-loop.c')
| -rw-r--r-- | gcc/tree-vect-loop.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c index dccddee..dac6bb8 100644 --- a/gcc/tree-vect-loop.c +++ b/gcc/tree-vect-loop.c @@ -6066,13 +6066,17 @@ vectorizable_reduction (stmt_vec_info stmt_info, gimple_stmt_iterator *gsi, return true; gassign *reduc_stmt = as_a <gassign *> (reduc_stmt_info->stmt); + code = gimple_assign_rhs_code (reduc_stmt); for (unsigned k = 1; k < gimple_num_ops (reduc_stmt); ++k) { tree op = gimple_op (reduc_stmt, k); if (op == phi_result) continue; - if (k == 1 - && gimple_assign_rhs_code (reduc_stmt) == COND_EXPR) + if (k == 1 && code == COND_EXPR) + continue; + bool is_simple_use = vect_is_simple_use (op, loop_vinfo, &dt); + gcc_assert (is_simple_use); + if (dt == vect_constant_def || dt == vect_external_def) continue; if (!vectype_in || (GET_MODE_SIZE (SCALAR_TYPE_MODE (TREE_TYPE (vectype_in))) |