On 09/01/2017 19:35, Jeff Law wrote:
> On 01/09/2017 07:02 AM, Aurelien Buhrig wrote:
>> On 06/01/2017 17:06, Jeff Law wrote:
>>> On 01/06/2017 03:20 AM, Aurelien Buhrig wrote:
>> So the insn:
>> (set (reg:QI 0 r0) (mem:QI (plus:SI (reg:SI 2 r2)(const_int 1))
>>
>> is transform
On 01/09/2017 07:02 AM, Aurelien Buhrig wrote:
On 06/01/2017 17:06, Jeff Law wrote:
On 01/06/2017 03:20 AM, Aurelien Buhrig wrote:
So the insn:
(set (reg:QI 0 r0) (mem:QI (plus:SI (reg:SI 2 r2)(const_int 1))
is transformed into:
(set (reg:SI 8 a0) (reg:SI 2 r2))
(set (reg:SI 8 a0) (const_int
On 06/01/2017 17:06, Jeff Law wrote:
> On 01/06/2017 03:20 AM, Aurelien Buhrig wrote:
>>
So the insn:
(set (reg:QI 0 r0) (mem:QI (plus:SI (reg:SI 2 r2)(const_int 1))
is transformed into:
(set (reg:SI 8 a0) (reg:SI 2 r2))
(set (reg:SI 8 a0) (const_int 1))
(set (reg
On 01/06/2017 09:37 AM, Eric Botcazou wrote:
I would suggesting moving away from cc0 first. cc0 is an abomination
and should have been abolished years ago -- the only reason is many old
ports would break and nobody's taken the time to convert them or propose
them for deprecation.
It's 8 out of
> I would suggesting moving away from cc0 first. cc0 is an abomination
> and should have been abolished years ago -- the only reason is many old
> ports would break and nobody's taken the time to convert them or propose
> them for deprecation.
It's 8 out of 47 ports, most of them old indeed, with
On 01/06/2017 03:26 AM, Aurelien Buhrig wrote:
Look at the dump file for reload to see where things come from. Also
everything Jeff said; you really want LRA.
I will try switching to LRA in a second step, but I think I need first to
remove the old cc0...
BTW, in which way the LRA is better
On 01/06/2017 03:20 AM, Aurelien Buhrig wrote:
So the insn:
(set (reg:QI 0 r0) (mem:QI (plus:SI (reg:SI 2 r2)(const_int 1))
is transformed into:
(set (reg:SI 8 a0) (reg:SI 2 r2))
(set (reg:SI 8 a0) (const_int 1))
(set (reg:SI 8 a0) (plus:SI (reg:SI 8 a0) (reg:SI 8 a0)))
(set (reg:QI 0 r0) (mem
On Fri, Jan 06, 2017 at 11:26:40AM +0100, Aurelien Buhrig wrote:
> > Look at the dump file for reload to see where things come from. Also
> > everything Jeff said; you really want LRA.
>
> I will try switching to LRA in a second step, but I think I need first to
> remove the old cc0...
:-)
> B
> Look at the dump file for reload to see where things come from. Also
> everything Jeff said; you really want LRA.
I will try switching to LRA in a second step, but I think I need first to
remove the old cc0...
BTW, in which way the LRA is better than IRA? Is there any benchmarks?
Thanks for
>> So the insn:
>> (set (reg:QI 0 r0) (mem:QI (plus:SI (reg:SI 2 r2)(const_int 1))
>>
>> is transformed into:
>> (set (reg:SI 8 a0) (reg:SI 2 r2))
>> (set (reg:SI 8 a0) (const_int 1))
>> (set (reg:SI 8 a0) (plus:SI (reg:SI 8 a0) (reg:SI 8 a0)))
>> (set (reg:QI 0 r0) (mem:QI (reg:SI 8 a0))
>>
>> Th
On Thu, Jan 05, 2017 at 05:18:46PM +0100, Aurelien Buhrig wrote:
> The issue happens when reloading:
>
> (set (reg:QI 47 [ _9 ])
> (mem:QI (plus:SI (reg/v/f:SI 68 [orig:51 in ] [51])
> (const_int 1 [0x1])
>
> My understanding is that IRA allocates hardregs to allocno which are
>
On 01/05/2017 09:18 AM, Aurelien Buhrig wrote:
Hi all, and best wishes for the happy new year!
I'm porting a private 4.6 backend to GCC 6 and facing a reload issue and
I would appreciate a little help to cope with it.
The issue happens when reloading:
(set (reg:QI 47 [ _9 ])
(mem:QI (plus:SI
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