On Sun, Nov 24, 2019 at 08:55:37PM +0100, Bernd Schmidt wrote:
> On 11/24/19 8:43 PM, Segher Boessenkool wrote:
> > But. Allowing autoinc into jump insns means those jump insns may then
> > eventually need an output reload; it may just have been because of that?
>
> That's almost certainly the re
On 11/24/19 8:43 PM, Segher Boessenkool wrote:
> But. Allowing autoinc into jump insns means those jump insns may then
> eventually need an output reload; it may just have been because of that?
That's almost certainly the reasoning, but as I pointed out in my
original mail - reload is careful aro
On Sun, Nov 24, 2019 at 11:39:05AM -0600, Segher Boessenkool wrote:
> On Sun, Nov 24, 2019 at 03:19:49PM +0100, Bernd Schmidt wrote:
> > - /* This continue is deliberate. We do not want the uses of the
> > -jump put into reg_next_use because it is not considered safe to
> > -combine a
Hi!
On Sun, Nov 24, 2019 at 03:19:49PM +0100, Bernd Schmidt wrote:
> - /* This continue is deliberate. We do not want the uses of the
> - jump put into reg_next_use because it is not considered safe to
> - combine a preincrement with a jump. */
> - if (JUMP_P (insn))
> -
On 11/19/19 1:27 AM, Segher Boessenkool wrote:
> The combine parts are okay for trunk, if you keep an eye out :-)
Thanks, now committed. That leaves the auto-inc-dec part. Since we're
being adventurous, I've also bootstrapped and tested the following in
the meantime (on the gcc135 machine). This j
On Wed, Nov 13, 2019 at 02:21:01PM +0100, Bernd Schmidt wrote:
> After the m68k cc0 conversion, there is one code quality regression that
> I can see: we no longer generate autoinc addressing modes in
> comparisons. This is because the parts of the compiler that generate
> autoinc are unwilling to
After the m68k cc0 conversion, there is one code quality regression that
I can see: we no longer generate autoinc addressing modes in
comparisons. This is because the parts of the compiler that generate
autoinc are unwilling to substitute into jumps.
If you look at the code in reload, you'll see t
