[3.1.1] Backports of trunk patches

[Richard Henderson]

On Wed, May 22, 2002 at 11:55:48PM +0200, Jakub Jelinek wrote:
> 	* combine.c (force_to_mode): Use gen_int_mode.
> 	Don't clear CONST_INT bits outside of mode.
> 
> 	* gcc.dg/20020517-1.c: New test.
> 
> 	PR c/6643
> 	* emit-rtl.c (widen_memory_access): Only call compare_tree_int
> 	if DECL_SIZE_UNIT is INTEGER_CST.

Ok.


r~