PR middle-end/59273

	* tree-vect-generic.c (optimize_vector_constructor): Don't optimize
	if there isn't optab handler for the corresponding vector PLUS_EXPR.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@205414 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c2d977e..4f2edd4 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,9 @@
 2013-11-26  Jakub Jelinek  <jakub@redhat.com>
 
+       PR middle-end/59273
+       * tree-vect-generic.c (optimize_vector_constructor): Don't optimize
+       if there isn't optab handler for the corresponding vector PLUS_EXPR.
+
        PR rtl-optimization/59166
        * ira.c (find_moveable_pseudos): Use DF_REF_REAL_LOC instead of
        DF_REF_LOC in validate_change call.

diff --git a/gcc/tree-vect-generic.c b/gcc/tree-vect-generic.c
index 87130bd..d55485d 100644 (file)
--- a/gcc/tree-vect-generic.c
+++ b/gcc/tree-vect-generic.c
@@ -1015,9 +1015,14 @@ optimize_vector_constructor (gimple_stmt_iterator *gsi)
   tree *cst;
   gimple g;
   tree base = NULL_TREE;
+  optab op;
 
   if (nelts <= 2 || CONSTRUCTOR_NELTS (rhs) != nelts)
     return;
+  op = optab_for_tree_code (PLUS_EXPR, type, optab_default);
+  if (op == unknown_optab
+      || optab_handler (op, TYPE_MODE (type)) == CODE_FOR_nothing)
+    return;
   FOR_EACH_VEC_SAFE_ELT (CONSTRUCTOR_ELTS (rhs), i, elt)
     if (TREE_CODE (elt->value) != SSA_NAME
        || TREE_CODE (TREE_TYPE (elt->value)) == VECTOR_TYPE)