[PATCH] combine: Do not combine moves from hard registers

[Jeff Law]

On 11/8/18 1:34 PM, Segher Boessenkool wrote:
> On Thu, Nov 08, 2018 at 03:44:44PM +0000, Sam Tebbs wrote:
>> Does your patch fix the incorrect generation of "scvtf s1, s1"? I was
>> looking at the issue as well and don't want to do any overlapping work.
> 
> I don't know.  Well, there are no incorrect code issues I know of at all
> now; but you mean that it is taking an instruction more than you would
> like to see, I suppose?
Which is ultimately similar to the 3 regressions HJ has reported on x86_64.

jeff