bitmask
-Original Message-
From: Richard Sandiford
Sent: Tuesday, June 14, 2022 2:43 PM
To: Richard Biener
Cc: Tamar Christina ;
gcc-patches@gcc.gnu.org; nd
Subject: Re: [PATCH 1/2]middle-end Support optimized division by pow2
bitmask
Richard Biener writes:
On Mon, 13 Jun 2022, Tamar
> -Original Message-
> From: Tamar Christina
> Sent: Tuesday, June 14, 2022 4:58 PM
> To: Richard Sandiford ; Richard Biener
>
> Cc: gcc-patches@gcc.gnu.org; nd
> Subject: RE: [PATCH 1/2]middle-end Support optimized division by pow2
> bitmask
>
>
m: Richard Biener
>>>>> Sent: Monday, June 13, 2022 12:48 PM
>>>>> To: Tamar Christina
>>>>> Cc: gcc-patches@gcc.gnu.org; nd ; Richard Sandiford
>>>>>
>>>>> Subject: RE: [PATCH 1/2]middle-end Support optimized div
> -Original Message-
> From: Richard Sandiford
> Sent: Tuesday, June 14, 2022 2:43 PM
> To: Richard Biener
> Cc: Tamar Christina ; gcc-patches@gcc.gnu.org;
> nd
> Subject: Re: [PATCH 1/2]middle-end Support optimized division by pow2
> bitmask
>
> Rich
m: Richard Biener
>> > > > Sent: Monday, June 13, 2022 10:39 AM
>> > > > To: Tamar Christina
>> > > > Cc: gcc-patches@gcc.gnu.org; nd ; Richard Sandiford
>> > > >
>> > > > Subject: Re: [PATCH 1/2]middle-
> -Original Message-
> From: Richard Biener
> Sent: Tuesday, June 14, 2022 2:19 PM
> To: Tamar Christina
> Cc: gcc-patches@gcc.gnu.org; nd ; Richard Sandiford
>
> Subject: RE: [PATCH 1/2]middle-end Support optimized division by pow2
> bitmask
>
> On Mon
gt; > To: Tamar Christina
> > > > Cc: gcc-patches@gcc.gnu.org; nd ; Richard Sandiford
> > > >
> > > > Subject: Re: [PATCH 1/2]middle-end Support optimized division by
> > > > pow2 bitmask
> > > >
> > > > On Mon, 13 Jun 2022,
> -Original Message-
> From: Richard Biener
> Sent: Monday, June 13, 2022 12:48 PM
> To: Tamar Christina
> Cc: gcc-patches@gcc.gnu.org; nd ; Richard Sandiford
>
> Subject: RE: [PATCH 1/2]middle-end Support optimized division by pow2
> bitmask
>
> On Mon
On Mon, 13 Jun 2022, Tamar Christina wrote:
> > -Original Message-
> > From: Richard Biener
> > Sent: Monday, June 13, 2022 10:39 AM
> > To: Tamar Christina
> > Cc: gcc-patches@gcc.gnu.org; nd ; Richard Sandiford
> >
> > Subject: Re: [PATCH 1/
> -Original Message-
> From: Richard Biener
> Sent: Monday, June 13, 2022 10:39 AM
> To: Tamar Christina
> Cc: gcc-patches@gcc.gnu.org; nd ; Richard Sandiford
>
> Subject: Re: [PATCH 1/2]middle-end Support optimized division by pow2
> bitmask
>
> On Mo
On Mon, 13 Jun 2022, Richard Biener wrote:
> On Thu, 9 Jun 2022, Tamar Christina wrote:
>
> > Hi All,
> >
> > In plenty of image and video processing code it's common to modify pixel
> > values
> > by a widening operation and then scale them back into range by dividing by
> > 255.
> >
> > Thi
On Thu, 9 Jun 2022, Tamar Christina wrote:
> Hi All,
>
> In plenty of image and video processing code it's common to modify pixel
> values
> by a widening operation and then scale them back into range by dividing by
> 255.
>
> This patch adds an optab to allow us to emit an optimized sequence
Hi All,
In plenty of image and video processing code it's common to modify pixel values
by a widening operation and then scale them back into range by dividing by 255.
This patch adds an optab to allow us to emit an optimized sequence when doing
an unsigned division that is equivalent to:
x =
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