[Bug target/20126] [3.3/3.4/4.0 Regression] Inlined memcmp makes one argument null on entry

[Bernd Schmidt]

Jakub Jelinek wrote:
> 	PR target/20126
> 	* loop.c (loop_givs_rescan): If replacement of DEST_ADDR failed,
> 	set the original address pseudo to the correct value before the
> 	original insn, if possible, and leave the insn alone, otherwise
> 	create a new pseudo, set it and replace it in the insn.
> 	* recog.c (validate_change_maybe_volatile): New.
> 	* recog.h (validate_change_maybe_volatile): Declare.
> 
This doesn't appear to match the patch you posted.


Bernd