PR middle-end/12526
        * tree.c (build): A CALL_EXPR has side-effects if its arguments do.
        * calls.c (call_expr_flags): New fn.
        * tree.h: Declare it.
        * tree-cfg.c (call_expr_flags): Move to calls.c.
        * tree-flow.h: Move prototype to tree.h.

From-SVN: r73588