[PATCH] aarch64, gas: Relax Armv9.6-A mandatory feature set

[Alice Carlotti]

On Tue, Oct 07, 2025 at 11:27:30AM +0100, Andre Vieira wrote:
> Hi,
> 
> Remove FPRCVT and SVE2p2 from the set of mandatory features for Armv9.6-A.
> 
> Tested on aarch64-none-linux-gnu.
> 
> OK for trunk and backport to binutils 2.45?

OK, thanks

Alice

> 
> Kind regards,
> Andre

> diff --git a/gas/testsuite/gas/aarch64/fprcvt.d b/gas/testsuite/gas/aarch64/fprcvt.d
> index f44690bf4860b0b4357496b2450d52e8ded19bb1..91298584d004ba2d977c760d72e14486f49186da 100644
> --- a/gas/testsuite/gas/aarch64/fprcvt.d
> +++ b/gas/testsuite/gas/aarch64/fprcvt.d
> @@ -1,6 +1,5 @@
>  #name: FPRCVT instructions
>  #as: -march=armv8-a+fprcvt
> -#as: -march=armv9.6-a
>  #objdump: -dr
>  
>  .*:     file format .*
> diff --git a/gas/testsuite/gas/aarch64/sve2p2.d b/gas/testsuite/gas/aarch64/sve2p2.d
> index 128e35033bc80b7edb62e5dd1c2658cf2bab74c2..f401cb4fc30f6d258f047db83938b60a7d1c0fde 100644
> --- a/gas/testsuite/gas/aarch64/sve2p2.d
> +++ b/gas/testsuite/gas/aarch64/sve2p2.d
> @@ -1,6 +1,5 @@
>  #as: -march=armv8-a+sve2p2
>  #as: -march=armv8-a+sme2p2
> -#as: -march=armv9.6-a
>  #objdump: -dr
>  
>  .*:     file format .*
> diff --git a/include/opcode/aarch64.h b/include/opcode/aarch64.h
> index 9408d00dde0a1f2524e078bfe1b5d804610914b1..2b3c57d51676141c5a9e2e80fbf96cd7d2e23c3d 100644
> --- a/include/opcode/aarch64.h
> +++ b/include/opcode/aarch64.h
> @@ -397,10 +397,8 @@ static_assert ((AA64_REPLICATE (REP_PLUS, AA64_REPVAL,
>  					)
>  #define AARCH64_ARCH_V9_6A_FEATURES(X)	(AARCH64_FEATBIT (X, V9_6A)	\
>  					 | AARCH64_FEATBIT (X, CMPBR)	\
> -					 | AARCH64_FEATBIT (X, FPRCVT)	\
>  					 | AARCH64_FEATBIT (X, LSUI)	\
> -					 | AARCH64_FEATBIT (X, OCCMO)	\
> -					 | AARCH64_FEATBIT (X, SVE2p2))
> +					 | AARCH64_FEATBIT (X, OCCMO))
>  
>  /* Architectures are the sum of the base and extensions.  */
>  #define AARCH64_ARCH_V8A(X)	(AARCH64_FEATBIT (X, V8) \