diff options
| author | Richard Biener <rguenther@suse.de> | 2025-01-30 14:52:14 +0100 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2025-01-31 09:11:04 +0100 |
| commit | 9e3ceed8d50912e271e84389ed80aeea47184e59 (patch) | |
| tree | e5de8789df7ca14f12cdbaff35f2f579c1f910b9 /gcc | |
| parent | c8cc686377f63f39c188661d6283637188046b48 (diff) | |
| download | gcc-9e3ceed8d50912e271e84389ed80aeea47184e59.zip gcc-9e3ceed8d50912e271e84389ed80aeea47184e59.tar.gz gcc-9e3ceed8d50912e271e84389ed80aeea47184e59.tar.bz2 | |
Do not rely on non-SLP analysis for SLP outer loop vectorization
We end up relying on non-SLP analysis of the inner loop LC PHI to
set the vectorizationb method for SLP since vectorizable_reduction
claims responsibility. The following fixes this.
* tree-vect-loop.cc (vect_analyze_loop_operations): Only
call vectorizable_lc_phi when not PURE_SLP.
(vectorizable_reduction): Do not claim having handled
the inner loop LC PHI for outer loop vectorization.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/tree-vect-loop.cc | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc index ce674a7..0342620 100644 --- a/gcc/tree-vect-loop.cc +++ b/gcc/tree-vect-loop.cc @@ -2171,6 +2171,7 @@ vect_analyze_loop_operations (loop_vec_info loop_vinfo) if ((STMT_VINFO_DEF_TYPE (stmt_info) == vect_internal_def || (STMT_VINFO_DEF_TYPE (stmt_info) == vect_double_reduction_def)) + && ! PURE_SLP_STMT (stmt_info) && !vectorizable_lc_phi (loop_vinfo, stmt_info, NULL, NULL)) return opt_result::failure_at (phi, "unsupported phi\n"); @@ -7770,9 +7771,10 @@ vectorizable_reduction (loop_vec_info loop_vinfo, { /* For SLP we arrive here for both the inner loop LC PHI and the outer loop PHI. The latter is what we want to analyze - the reduction with. */ + the reduction with. The LC PHI is handled by + vectorizable_lc_phi. */ gcc_assert (slp_node); - return true; + return gimple_phi_num_args (as_a <gphi *> (stmt_info->stmt)) == 2; } use_operand_p use_p; gimple *use_stmt; |