> -Original Message-
> From: Alex Coplan
> Sent: Wednesday, January 17, 2024 12:59 AM
> To: Andrew Pinski (QUIC)
> Cc: gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH] aarch64: Fix aarch64_ldp_reg_operand predicate not to
> allow all subreg [PR113221]
>
> Hi An
> -Original Message-
> From: Andrew Pinski
> Sent: Wednesday, January 17, 2024 3:29 AM
> To: gcc-patches@gcc.gnu.org
> Cc: Alex Coplan ; Andrew Pinski
>
> Subject: [PATCH] aarch64: Fix aarch64_ldp_reg_operand predicate not to allow
> all subreg [PR113221]
On Tue, Jan 16, 2024 at 07:29:04PM -0800, Andrew Pinski wrote:
> So the problem here is that aarch64_ldp_reg_operand will all subreg even
> subreg of lo_sum.
> When LRA tries to fix that up, all things break. So the fix is to change the
> check to only
> allow reg and subreg of regs.
>
> Note
Hi Andrew,
On 16/01/2024 19:29, Andrew Pinski wrote:
> So the problem here is that aarch64_ldp_reg_operand will all subreg even
> subreg of lo_sum.
> When LRA tries to fix that up, all things break. So the fix is to change the
> check to only
> allow reg and subreg of regs.
Thanks a lot for
So the problem here is that aarch64_ldp_reg_operand will all subreg even subreg
of lo_sum.
When LRA tries to fix that up, all things break. So the fix is to change the
check to only
allow reg and subreg of regs.
Note the tendancy here is to use register_operand but that checks the mode of
the
