Richard Sandiford via Gcc-patches writes:
> Tamar Christina via Gcc-patches writes:
>>> > +/* Check to see if the supplied comparison in PTEST can be performed as a
>>> > + bit-test-and-branch instead. VAL must contain the original tree
>>> > + expression of the non-zero operand which will
Tamar Christina via Gcc-patches writes:
>> > +/* Check to see if the supplied comparison in PTEST can be performed as a
>> > + bit-test-and-branch instead. VAL must contain the original tree
>> > + expression of the non-zero operand which will be used to rewrite the
>> > + comparison in
On Thu, 1 Dec 2022, Tamar Christina wrote:
> > > +/* Check to see if the supplied comparison in PTEST can be performed as a
> > > + bit-test-and-branch instead. VAL must contain the original tree
> > > + expression of the non-zero operand which will be used to rewrite the
> > > +
> > +/* Check to see if the supplied comparison in PTEST can be performed as a
> > + bit-test-and-branch instead. VAL must contain the original tree
> > + expression of the non-zero operand which will be used to rewrite the
> > + comparison in PTEST.
> > +
> > + Returns TRUE if operation
On Mon, Nov 14, 2022 at 4:57 PM Tamar Christina via Gcc-patches
wrote:
>
> > -Original Message-
> > From: Richard Biener
> > Sent: Saturday, November 5, 2022 2:23 PM
> > To: Aldy Hernandez
> > Cc: Tamar Christina ; Jeff Law
> > ; gcc-patches@gcc.gnu.org; nd ;
> > MacLeod, Andrew
> >
On 11/14/22 08:56, Tamar Christina wrote:
gcc/ChangeLog:
* dojump.cc (do_jump): Pass along value.
(do_jump_by_parts_greater_rtx): Likewise.
(do_jump_by_parts_zero_rtx): Likewise.
(do_jump_by_parts_equality_rtx): Likewise.
(do_compare_rtx_and_jump):
> -Original Message-
> From: Richard Biener
> Sent: Saturday, November 5, 2022 2:23 PM
> To: Aldy Hernandez
> Cc: Tamar Christina ; Jeff Law
> ; gcc-patches@gcc.gnu.org; nd ;
> MacLeod, Andrew
> Subject: Re: [PATCH 1/2]middle-end: Add new tbranch optab to add support
> for
On Wed, 2 Nov 2022, Aldy Hernandez wrote:
> On Wed, Nov 2, 2022 at 10:55 AM Tamar Christina
> wrote:
> >
> > Hi Aldy,
> >
> > I'm trying to use Ranger to determine if a range of an expression is a
> > single bit.
> >
> > If possible in case of a mask then also the position of the bit that's
>
On Wed, Nov 2, 2022 at 10:55 AM Tamar Christina wrote:
>
> Hi Aldy,
>
> I'm trying to use Ranger to determine if a range of an expression is a single
> bit.
>
> If possible in case of a mask then also the position of the bit that's being
> checked by the mask (or the mask itself).
Just
Hi Aldy,
I'm trying to use Ranger to determine if a range of an expression is a single
bit.
If possible in case of a mask then also the position of the bit that's being
checked by the mask (or the mask itself).
Do you have any pointers/existing code I can look at to do this?
Kind regards,
On 11/1/22 09:53, Tamar Christina wrote:
from the machine description.
+@cindex @code{tbranch@var{mode}4} instruction pattern @item
+@samp{tbranch@var{mode}4} Conditional branch instruction combined
+with a bit test-and-compare instruction. Operand 0 is a comparison
+operator. Operand 1
> -Original Message-
> From: Jeff Law
> Sent: Monday, October 31, 2022 9:16 PM
> To: Tamar Christina ; gcc-patches@gcc.gnu.org
> Cc: nd ; rguent...@suse.de
> Subject: Re: [PATCH 1/2]middle-end: Add new tbranch optab to add support
> for bit-test-and-branch operations
>
>
> On 10/31/22
On 10/31/22 05:53, Tamar Christina wrote:
Hi All,
This adds a new test-and-branch optab that can be used to do a conditional test
of a bit and branch. This is similar to the cbranch optab but instead can
test any arbitrary bit inside the register.
This patch recognizes boolean comparisons
Hi All,
This adds a new test-and-branch optab that can be used to do a conditional test
of a bit and branch. This is similar to the cbranch optab but instead can
test any arbitrary bit inside the register.
This patch recognizes boolean comparisons and single bit mask tests.
Bootstrapped
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