* function.c (assign_stack_temp_for_type): Clear best_p

    * function.c (assign_stack_temp_for_type): Clear best_p
        when an exact match is found.
        * i386.h (LOCAL_ALIGNMENT): Define.
        * function.c (assign_stack_local, assign_outer_stack_local): Use it.
        (assign_stack_temp_for_type): New function based on assign_stack_temp.
        (assign_stack_temp): Call it.
        (assign_temp): Use assign_stack_temp_for_type, not assign_stack_temp.
        * stmt.c: Use assign_temp, not assign_stack_temp.
        * tm.texi: Document LOCAL_ALIGNMENT.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@25143 138bc75d-0d04-0410-961f-82ee72b054a4