[PATCH v13 0/3] add diagnostics macros to make code portable

[Bruce Richardson]

On Wed, Jan 15, 2025 at 05:55:08PM -0800, Andre Muezerie wrote:
> It was a common pattern to have "GCC diagnostic ignored" pragmas
> sprinkled over the code and only activate these pragmas for certain
> compilers (gcc and clang). Clang supports GCC's pragma for
> compatibility with existing source code, so #pragma GCC diagnostic
> and #pragma clang diagnostic are synonyms for Clang
> (https://clang.llvm.org/docs/UsersManual.html).
> 
> Now that effort is being made to make the code compatible with MSVC
> these expressions would become more complex. It makes sense to hide
> this complexity behind macros. This makes maintenance easier as these
> macros are defined in a single place. As a plus the code becomes
> more readable as well.
> 

Series-acked-by: Bruce Richardson <bruce.richardson at intel.com>

> v13:
>  * Renamed RTE_IGNORE_CAST_QUAL into RTE_PTR_DROP_QUALIFIERS.
>  * Added (void *) cast to RTE_PTR_DROP_QUALIFIERS to avoid the need
>    for casting the result in most places where the macro is used.
> 
> v12:
>  * Added macro RTE_IGNORE_CAST_QUAL and used it as a more compact and
>    readable form to suppress warnings where a cast is used to remove
>    a type qualifier.
> 
> v11:
>  * Added __rte_diagnostic_ignored_wcast_qual to a few more places where
>    it was needed.
> 
> v10:
>  * Added __rte_diagnostic_ignored_wcast_qual to a few more places where
>    it was needed.
> 
> v9:
>  * Added __rte_diagnostic_ignored_wcast_qual to a few more places where
>    it was needed.
> 
> v8:
>  * Added __rte_diagnostic_ignored_wcast_qual to a few more places where
>    it was needed.
> 
> v7:
>  * Added __rte_diagnostic_ignored_wcast_qual to a few more places where
>    it was needed.
> 
> v6:
>  * Added __rte_diagnostic_ignored_wcast_qual to a few more places where
>    it was needed.
> 
> v5:
>  * Added __rte_diagnostic_ignored_wcast_qual to a few more places where
>    it was needed.
> 
> v4:
>  * Added __rte_diagnostic_ignored_wcast_qual to a few more places where
>    it was needed.
> 
> v3:
>  * Added __rte_diagnostic_ignored_wcast_qual to a few more places where
>    it was needed.
> 
> v2:
>  * Removed __rte_diagnostic_ignored_wstrict_aliasing (introduced
>    in v1).
>  * Removed the pragmas from many files where they were not needed.
>  * In the files where the pragmas were indeed needed, reduced the
>    scope during which they are active, reducing the chance that
>    unforeseen issues are hidden due to warning suppression.
> 
> Andre Muezerie (3):
>   eal: add diagnostics macros to make code portable
>   drivers/common: add diagnostics macros to make code portable
>   drivers/net: add diagnostics macros to make code portable
> 
>  drivers/common/idpf/idpf_common_rxtx_avx512.c | 77 ++++++++---------
>  drivers/net/axgbe/axgbe_rxtx.h                |  9 --
>  drivers/net/cpfl/cpfl_rxtx_vec_common.h       |  4 -
>  drivers/net/dpaa2/dpaa2_rxtx.c                | 15 +---
>  drivers/net/fm10k/fm10k_rxtx_vec.c            | 20 ++---
>  drivers/net/hns3/hns3_rxtx_vec_neon.h         |  6 +-
>  .../net/i40e/i40e_recycle_mbufs_vec_common.c  |  2 -
>  drivers/net/i40e/i40e_rxtx_common_avx.h       | 24 +++---
>  drivers/net/i40e/i40e_rxtx_vec_altivec.c      | 23 ++---
>  drivers/net/i40e/i40e_rxtx_vec_avx2.c         | 40 +++++----
>  drivers/net/i40e/i40e_rxtx_vec_avx512.c       | 30 ++++---
>  drivers/net/i40e/i40e_rxtx_vec_common.h       |  4 -
>  drivers/net/i40e/i40e_rxtx_vec_neon.c         | 39 ++++-----
>  drivers/net/i40e/i40e_rxtx_vec_sse.c          | 32 +++----
>  drivers/net/iavf/iavf_rxtx_vec_avx2.c         | 84 ++++++++++---------
>  drivers/net/iavf/iavf_rxtx_vec_avx512.c       | 78 ++++++++---------
>  drivers/net/iavf/iavf_rxtx_vec_common.h       | 12 ++-
>  drivers/net/iavf/iavf_rxtx_vec_neon.c         | 26 +++---
>  drivers/net/iavf/iavf_rxtx_vec_sse.c          | 52 ++++++------
>  drivers/net/ice/ice_rxtx_common_avx.h         | 24 +++---
>  drivers/net/ice/ice_rxtx_vec_avx2.c           | 74 ++++++++--------
>  drivers/net/ice/ice_rxtx_vec_avx512.c         | 64 ++++++--------
>  drivers/net/ice/ice_rxtx_vec_common.h         |  4 -
>  drivers/net/ice/ice_rxtx_vec_sse.c            | 28 +++----
>  drivers/net/idpf/idpf_rxtx_vec_common.h       |  4 -
>  .../ixgbe/ixgbe_recycle_mbufs_vec_common.c    |  2 -
>  drivers/net/ixgbe/ixgbe_rxtx_vec_neon.c       | 18 ++--
>  drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c        | 20 ++---
>  drivers/net/mlx5/mlx5_flow.c                  |  5 +-
>  drivers/net/mlx5/mlx5_rxtx_vec_altivec.h      |  5 --
>  drivers/net/mlx5/mlx5_rxtx_vec_neon.h         | 18 ++--
>  drivers/net/mlx5/mlx5_rxtx_vec_sse.h          | 71 +++++++++-------
>  drivers/net/ngbe/ngbe_rxtx_vec_neon.c         |  8 +-
>  drivers/net/tap/tap_flow.c                    |  6 +-
>  drivers/net/txgbe/txgbe_rxtx_vec_neon.c       |  8 +-
>  drivers/net/virtio/virtio_rxtx_simple.c       |  4 -
>  lib/eal/include/rte_common.h                  | 29 +++++++
>  37 files changed, 466 insertions(+), 503 deletions(-)
> 
> --
> 2.47.2.vfs.0.0
>