> Do you really need a copy of the address register? Couldn't you just do a
> src = adjust_address (operands[1], BLKmode, 0);
> You create a paradoxical subreg of the QImode input but vll actually
> uses the whole 32 bit value. Couldn't we end up with uninitialized
> bytes being used as part of the length then? Do we need a zero-extend
> here?

v2 attached with these problems addressed.

Testsuite and bootstrap as before.

Regards
 Robin