[PATCH] combine: Delete EQ* notes when pseudo mode changes (PR60818)

[Segher Boessenkool]

On Fri, Feb 19, 2016 at 07:39:03PM +0100, Eric Botcazou wrote:
> > Not for stage 4 certainly.
> 
> If we go this way, is the bug a regression?  If no, why rushing the fix?

It is not a regression (it is in all open release branches already).
I can postpone it if you think that is wiser?

> > That moves those notes to i2notes, and then distribute_notes drops them?
> 
> That's not why I understand though.  The code appends i2notes to i3notes and 
> distribute_notes will preserve them on i3:

I misread it as moving the notes from i3 to i2, ugh.  It looks like we
do have a problem if i2 is a parallel with only one SET; but we already
had a problem anyway?  The REG_EQ* is put on the wrong insn?


Segher