On 5/31/19 9:03 AM, Jeff Law wrote:
> On 5/31/19 1:24 AM, Richard Biener wrote:
>> On Thu, 30 May 2019, Jeff Law wrote:
>>
>>> On 5/30/19 12:41 AM, Richard Biener wrote:
On May 29, 2019 10:18:01 PM GMT+02:00, Jeff Law wrote:
> On 5/23/19 6:11 AM, Richard Biener wrote:
>> On Thu, 23 Ma
On Tue, 4 Jun 2019, Jiufu Guo wrote:
> Jeff Law writes:
>
> > On 5/31/19 1:24 AM, Richard Biener wrote:
> >> On Thu, 30 May 2019, Jeff Law wrote:
> >>
> >>> On 5/30/19 12:41 AM, Richard Biener wrote:
> On May 29, 2019 10:18:01 PM GMT+02:00, Jeff Law wrote:
> > On 5/23/19 6:11 AM, Rich
Jeff Law writes:
> On 5/31/19 1:24 AM, Richard Biener wrote:
>> On Thu, 30 May 2019, Jeff Law wrote:
>>
>>> On 5/30/19 12:41 AM, Richard Biener wrote:
On May 29, 2019 10:18:01 PM GMT+02:00, Jeff Law wrote:
> On 5/23/19 6:11 AM, Richard Biener wrote:
>> On Thu, 23 May 2019, Jiufu Gu
On 5/31/19 1:24 AM, Richard Biener wrote:
> On Thu, 30 May 2019, Jeff Law wrote:
>
>> On 5/30/19 12:41 AM, Richard Biener wrote:
>>> On May 29, 2019 10:18:01 PM GMT+02:00, Jeff Law wrote:
On 5/23/19 6:11 AM, Richard Biener wrote:
> On Thu, 23 May 2019, Jiufu Guo wrote:
>
>> Hi,
>
On Thu, 30 May 2019, Jeff Law wrote:
> On 5/30/19 12:41 AM, Richard Biener wrote:
> > On May 29, 2019 10:18:01 PM GMT+02:00, Jeff Law wrote:
> >> On 5/23/19 6:11 AM, Richard Biener wrote:
> >>> On Thu, 23 May 2019, Jiufu Guo wrote:
> >>>
> Hi,
>
> Richard Biener writes:
>
> >
On 5/30/19 12:41 AM, Richard Biener wrote:
> On May 29, 2019 10:18:01 PM GMT+02:00, Jeff Law wrote:
>> On 5/23/19 6:11 AM, Richard Biener wrote:
>>> On Thu, 23 May 2019, Jiufu Guo wrote:
>>>
Hi,
Richard Biener writes:
> On Tue, 21 May 2019, Jiufu Guo wrote:
>>
>> +
On 5/30/19 12:44 AM, Richard Biener wrote:
> On May 29, 2019 10:21:46 PM GMT+02:00, Jeff Law wrote:
>> On 5/24/19 6:45 AM, Richard Biener wrote:
>> [ Aggressive snipping ]
>>
>>> As said in my first review I'd just check whether for the
>>> edge we want to thread through the definition comes from
On 5/30/19 12:57 AM, Jiufu Guo wrote:
> Richard Biener writes:
>
>> On May 29, 2019 10:21:46 PM GMT+02:00, Jeff Law wrote:
>>> On 5/24/19 6:45 AM, Richard Biener wrote:
>>> [ Aggressive snipping ]
>>>
As said in my first review I'd just check whether for the
edge we want to thread thro
Richard Biener writes:
> On May 29, 2019 10:21:46 PM GMT+02:00, Jeff Law wrote:
>>On 5/24/19 6:45 AM, Richard Biener wrote:
>>[ Aggressive snipping ]
>>
>>> As said in my first review I'd just check whether for the
>>> edge we want to thread through the definition comes from a CMP.
>>> Suppose y
On May 29, 2019 10:21:46 PM GMT+02:00, Jeff Law wrote:
>On 5/24/19 6:45 AM, Richard Biener wrote:
>[ Aggressive snipping ]
>
>> As said in my first review I'd just check whether for the
>> edge we want to thread through the definition comes from a CMP.
>> Suppose you have
>>
>> # val_1 = PHI
>>
On May 29, 2019 10:18:01 PM GMT+02:00, Jeff Law wrote:
>On 5/23/19 6:11 AM, Richard Biener wrote:
>> On Thu, 23 May 2019, Jiufu Guo wrote:
>>
>>> Hi,
>>>
>>> Richard Biener writes:
>>>
On Tue, 21 May 2019, Jiufu Guo wrote:
>
> +}
> +
> + if (TREE_CODE_CLASS (gimple_assign_r
On May 29, 2019 10:12:31 PM GMT+02:00, Jeff Law wrote:
>On 5/23/19 6:05 AM, Jiufu Guo wrote:
>> Hi,
>>
>> Richard Biener writes:
>>
>>> On Tue, 21 May 2019, Jiufu Guo wrote:
>>>
>
+/* Return true if PHI's INDEX-th incoming value is a CMP, and the
>CMP is
+ defined in the inco
Jeff Law writes:
> On 5/23/19 6:11 AM, Richard Biener wrote:
>> On Thu, 23 May 2019, Jiufu Guo wrote:
>>
>>> Hi,
>>>
>>> Richard Biener writes:
>>>
On Tue, 21 May 2019, Jiufu Guo wrote:
>
> +}
> +
> + if (TREE_CODE_CLASS (gimple_assign_rhs_code (def)) != tcc_comparison)
>>
On 5/24/19 6:45 AM, Richard Biener wrote:
[ Aggressive snipping ]
> As said in my first review I'd just check whether for the
> edge we want to thread through the definition comes from a CMP.
> Suppose you have
>
> # val_1 = PHI
> if (val_1 != 0)
>
> and only one edge has a b_3 = d_5 != 0 con
On 5/23/19 6:11 AM, Richard Biener wrote:
> On Thu, 23 May 2019, Jiufu Guo wrote:
>
>> Hi,
>>
>> Richard Biener writes:
>>
>>> On Tue, 21 May 2019, Jiufu Guo wrote:
+}
+
+ if (TREE_CODE_CLASS (gimple_assign_rhs_code (def)) != tcc_comparison)
+return false;
+
>>>
On 5/23/19 6:05 AM, Jiufu Guo wrote:
> Hi,
>
> Richard Biener writes:
>
>> On Tue, 21 May 2019, Jiufu Guo wrote:
>>
>>>
>>> +/* Return true if PHI's INDEX-th incoming value is a CMP, and the CMP is
>>> + defined in the incoming basic block. Otherwise return false. */
>>> +static bool
>>> +
On 5/21/19 7:44 AM, Jiufu Guo wrote:
> Hi,
>
> This patch implements a new opportunity of jump threading for PR77820.
> In this optimization, conditional jumps are merged with unconditional jump.
> And then moving CMP result to GPR is eliminated.
>
> It looks like below:
>
>
> p0 = a CMP b
Richard Biener writes:
> On Thu, 23 May 2019, Jiufu Guo wrote:
>
>> Richard Biener writes:
>>
>> > On Thu, 23 May 2019, Jiufu Guo wrote:
>> >
>> >> Hi,
>> >>
>> >> Richard Biener writes:
>> >>
>> >> > On Tue, 21 May 2019, Jiufu Guo wrote:
>> >> >
>> >> >> Hi,
>> >> >>
>> >> >> This patch im
On Thu, 23 May 2019, Jiufu Guo wrote:
> Richard Biener writes:
>
> > On Thu, 23 May 2019, Jiufu Guo wrote:
> >
> >> Hi,
> >>
> >> Richard Biener writes:
> >>
> >> > On Tue, 21 May 2019, Jiufu Guo wrote:
> >> >
> >> >> Hi,
> >> >>
> >> >> This patch implements a new opportunity of jump thread
Richard Biener writes:
> On Thu, 23 May 2019, Jiufu Guo wrote:
>
>> Hi,
>>
>> Richard Biener writes:
>>
>> > On Tue, 21 May 2019, Jiufu Guo wrote:
>> >
>> >> Hi,
>> >>
>> >> This patch implements a new opportunity of jump threading for PR77820.
>> >> In this optimization, conditional jumps ar
On Thu, 23 May 2019, Jiufu Guo wrote:
> Hi,
>
> Richard Biener writes:
>
> > On Tue, 21 May 2019, Jiufu Guo wrote:
> >
> >> Hi,
> >>
> >> This patch implements a new opportunity of jump threading for PR77820.
> >> In this optimization, conditional jumps are merged with unconditional jump.
> >>
Hi,
Richard Biener writes:
> On Tue, 21 May 2019, Jiufu Guo wrote:
>
>> Hi,
>>
>> This patch implements a new opportunity of jump threading for PR77820.
>> In this optimization, conditional jumps are merged with unconditional jump.
>> And then moving CMP result to GPR is eliminated.
>>
>> It l
On Tue, 21 May 2019, Jiufu Guo wrote:
> Hi,
>
> This patch implements a new opportunity of jump threading for PR77820.
> In this optimization, conditional jumps are merged with unconditional jump.
> And then moving CMP result to GPR is eliminated.
>
> It looks like below:
>
>
> p0 = a CMP
Hi,
This patch implements a new opportunity of jump threading for PR77820.
In this optimization, conditional jumps are merged with unconditional jump.
And then moving CMP result to GPR is eliminated.
It looks like below:
p0 = a CMP b
goto ;
p1 = c CMP d
goto ;
# phi = PHI
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