On Wed, Apr 2, 2025 at 5:35 AM Jeff Law wrote:
>
>
> Segher -- there's a combine question near the end...
I've created PR119587 to keep track of this issue.
BR
Christoph
>
>
> On 3/23/25 8:43 PM, Bohan Lei wrote:
> > The combine pass can generate an index like (and:DI (mult:DI (reg:DI)
> > (con
Segher -- there's a combine question near the end...
On 3/23/25 8:43 PM, Bohan Lei wrote:
The combine pass can generate an index like (and:DI (mult:DI (reg:DI)
(const_int scale)) (const_int mask)) when XTheadMemIdx is available.
LRA may pull it out, and thus a splitter is needed when Zba is n
On 3/30/25 8:54 PM, Bohan Lei wrote:
The RTL pattern has an "and" operation, which clears out the upper bits after
the shift operation. Since we have (INTVAL (operands[3]) >> INTVAL
(operands[2])) == 0x as a constraint, the RTL template and the split
code should be semantically identi
patches"
CC:"christoph.muellner"
Subject:Re: [PATCH] RISC-V: xtheadmemidx: Split slli.uw pattern
On 3/23/25 8:43 PM, Bohan Lei wrote:
> The combine pass can generate an index like (and:DI (mult:DI (reg:DI)
> (const_int scale)) (const_int mask)) when XTheadMemIdx is avai
On 3/23/25 8:43 PM, Bohan Lei wrote:
The combine pass can generate an index like (and:DI (mult:DI (reg:DI)
(const_int scale)) (const_int mask)) when XTheadMemIdx is available.
LRA may pull it out, and thus a splitter is needed when Zba is not
available.
A similar splitter were introduced when
On Mon, Mar 24, 2025 at 3:44 AM Bohan Lei wrote:
>
> The combine pass can generate an index like (and:DI (mult:DI (reg:DI)
> (const_int scale)) (const_int mask)) when XTheadMemIdx is available.
> LRA may pull it out, and thus a splitter is needed when Zba is not
> available.
>
> A similar splitter
The combine pass can generate an index like (and:DI (mult:DI (reg:DI)
(const_int scale)) (const_int mask)) when XTheadMemIdx is available.
LRA may pull it out, and thus a splitter is needed when Zba is not
available.
A similar splitter were introduced when XTheadMemIdx support was added,
but remov
