[PATCH] tree-optimization/101861 - fix gather use for non-gather refs

[Richard Biener via Gcc-patches]

My previous change broke the usage of gather for strided loads.
The following fixes it.

Bootstrapped on x86_64-unknown-linux-gnu, will push as obvious.

2021-08-11  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/101861
        * tree-vect-stmts.c (vectorizable_load): Fix error in
        previous change with regard to gather vectorization.
---
 gcc/tree-vect-stmts.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c
index ab402b57fb4..cc6c091e41e 100644
--- a/gcc/tree-vect-stmts.c
+++ b/gcc/tree-vect-stmts.c
@@ -9492,7 +9492,8 @@ vectorizable_load (vec_info *vinfo,
                    if (memory_access_type == VMAT_GATHER_SCATTER
                        && gs_info.ifn != IFN_LAST)
                      {
-                       vec_offset = vec_offsets[j];
+                       if (STMT_VINFO_GATHER_SCATTER_P (stmt_info))
+                         vec_offset = vec_offsets[j];
                        tree zero = build_zero_cst (vectype);
                        tree scale = size_int (gs_info.scale);
                        gcall *call;
-- 
2.31.1