* expr.c (queued_subexp_p): Make public.
        * expr.h (queued_subexp_p): Declare it.
        * recog.c (asm_operand_ok): New function.
        (check_asm_operands): Use it.  After reload, use constrain_operands
        instead.
        * recog.h (asm_operand_ok): Declare it.
        * stmt.c (expand_asm_operands): Use it to try harder to make
        asms initially satisfy their constraints.

From-SVN: r24686