[Bug middle-end/57286] [4.9 regression] infinite recurison in fold-const.c:10037

[glisse at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57286

--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> ---
Intuitively, I'd say:

@@ -10041,7 +10041,7 @@

       if (TREE_CODE (arg1) == COND_EXPR
       || TREE_CODE (arg1) == VEC_COND_EXPR
-      || COMPARISON_CLASS_P (arg1))
+      || (COMPARISON_CLASS_P (arg1) && !VECTOR_TYPE_P (TREE_TYPE (arg1))))
     {
       tem = fold_binary_op_with_conditional_arg (loc, code, type, op0, op1,
                              arg1, arg0,

but I don't really have time to think about it right now (meeting).