tree-vect-slp.c (vect_build_slp_tree_2): Do not build op from scalars in case…

tree-vect-slp.c (vect_build_slp_tree_2): Do not build op from scalars in case there's a constant operand in its definition.

2019-10-23  Richard Biener  <rguenther@suse.de>

	* tree-vect-slp.c (vect_build_slp_tree_2): Do not build
	op from scalars in case there's a constant operand in its
	definition.

From-SVN: r277308

gcc/ChangeLog

+2019-10-23  Richard Biener  <rguenther@suse.de>
+
+	* tree-vect-slp.c (vect_build_slp_tree_2): Do not build
+	op from scalars in case there's a constant operand in its
+	definition.
+
 2019-10-23  Iain Sandoe  <iain@sandoe.co.uk>
 
 	* config/rs6000/darwin.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Guard

gcc/tree-vect-slp.c

@@ -1291,7 +1291,7 @@ vect_build_slp_tree_2 (vec_info *vinfo,
 	      slp_tree grandchild;
 
 	      FOR_EACH_VEC_ELT (SLP_TREE_CHILDREN (child), j, grandchild)
-		if (SLP_TREE_DEF_TYPE (grandchild) == vect_internal_def)
+		if (SLP_TREE_DEF_TYPE (grandchild) != vect_external_def)
 		  break;
 	      if (!grandchild)
 		{
@@ -1450,7 +1450,7 @@ vect_build_slp_tree_2 (vec_info *vinfo,
 		  slp_tree grandchild;
 
 		  FOR_EACH_VEC_ELT (SLP_TREE_CHILDREN (child), j, grandchild)
-		    if (SLP_TREE_DEF_TYPE (grandchild) == vect_internal_def)
+		    if (SLP_TREE_DEF_TYPE (grandchild) != vect_external_def)
 		      break;
 		  if (!grandchild)
 		    {