Fix SLP of emulated gathers

The following fixes an error in the SLP of emulated gathers,
discovered by x86 specific tests when enabling single-lane SLP.

	* tree-vect-stmts.cc (vectorizable_load): Adjust offset
	vector gathering for SLP of emulated gathers.

diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
index 61e23b295160c06d2d811367bbf2dabdd09705f9..913a4fb08ed15c9588795b7e5e1e23f1d781a133 100644 (file)
--- a/gcc/tree-vect-stmts.cc
+++ b/gcc/tree-vect-stmts.cc
@@ -11163,7 +11163,7 @@ vectorizable_load (vec_info *vinfo,
                     than the data vector for now.  */
                  unsigned HOST_WIDE_INT factor
                    = const_offset_nunits / const_nunits;
-                 vec_offset = vec_offsets[j / factor];
+                 vec_offset = vec_offsets[(vec_num * j + i) / factor];
                  unsigned elt_offset = (j % factor) * const_nunits;
                  tree idx_type = TREE_TYPE (TREE_TYPE (vec_offset));
                  tree scale = size_int (gs_info.scale);