[PATCH] Fix expansion issues on type changing MEM_REFs on LHS (PR middle-end/48335)

[Eric Botcazou]

> I'm now bootstrapping/regtesting following adjusted patch, ok if it passes?
>
> 2011-04-01  Jakub Jelinek  <jakub@redhat.com>
>
> 	PR middle-end/48335
> 	* expr.c (expand_assignment): Handle all possibilities
> 	if TO_RTX is CONCAT.
> 	* expmed.c (store_bit_field_1): Avoid trying to create
> 	invalid SUBREGs.
> 	(store_split_bit_field): If SUBREG_REG (op0) or
> 	op0 itself has smaller mode than word, return it
> 	for offset 0 and const0_rtx for out-of-bounds stores.
> 	If word is const0_rtx, skip it.
>
> 	* gcc.c-torture/compile/pr48335-1.c: New test.
> 	* gcc.dg/pr48335-1.c: New test.
> 	* gcc.dg/pr48335-2.c: New test.
> 	* gcc.dg/pr48335-3.c: New test.
> 	* gcc.dg/pr48335-4.c: New test.
> 	* gcc.dg/pr48335-5.c: New test.
> 	* gcc.dg/pr48335-6.c: New test.
> 	* gcc.dg/pr48335-7.c: New test.
> 	* gcc.dg/pr48335-8.c: New test.
> 	* gcc.target/i386/pr48335-1.c: New test.

Yes, fine by me, thanks.

-- 
Eric Botcazou