new file mode 100644
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target vect_float } */
+
+float a[6];
+
+void foo (float x, float y)
+{
+ a[0] = 1.;
+ a[1] = 2.;
+ a[2] = 3.;
+ a[3] = 4.;
+ a[4] = 5.;
+ a[5] = x + y;
+}
+
+/* { dg-final { scan-tree-dump "optimized: basic block" "slp2" } } */
@@ -2396,7 +2396,7 @@ vect_build_slp_instance (vec_info *vinfo,
tree scalar_type
= TREE_TYPE (DR_REF (STMT_VINFO_DATA_REF (stmt_info)));
tree vectype = get_vectype_for_scalar_type (vinfo, scalar_type,
- least_bit_hwi (i));
+ 1 << floor_log2 (i));
unsigned HOST_WIDE_INT const_nunits;
if (vectype
&& TYPE_VECTOR_SUBPARTS (vectype).is_constant (&const_nunits))