[dpdk-dev] [PATCH v3 0/3] restrict pointer aliasing with a common wrapper

[Joyce Kong <joyce.kong@arm.com>]

As the 'restrict' keyword is recognized in C99, this patchset is to
add a wrapper defining '__rte_restrict' which can be supported by
all compilers. Then replace the existing 'restrict' and '__restrict'
in different vpmds, and optimize vhost/virtio with restricted pointer
aliasing for more aggressive loops vectorization.

The vhost/virtio optimization patches were benchmarked by running PVP
case on ThunderX2 platform and showed positive performance results.

v3:
  1.Correct the compiling issue on GCC 4.8.5.
  2.Squash the replacement patches and wrapper definition into one
    patch.(suggested by David Marchand)

v2:
  Add a common wrapper for restricted pointer aliasing to be supported
  by all compilers.(suggested by Maxime Coquelin)

Joyce Kong (3):
  lib/eal: add a common wrapper for restricted pointers
  net/virtio: restrict pointer aliasing for NEON vpmd
  lib/vhost: restrict pointer aliasing for packed vpmd

 drivers/net/i40e/i40e_rxtx_vec_neon.c         |  17 +-
 drivers/net/mlx5/mlx5_rxtx.c                  | 208 +++++++++---------
 drivers/net/virtio/virtio_rxtx_simple_neon.c  |   5 +-
 .../pthread_shim/pthread_shim.c               |  12 +-
 lib/librte_eal/include/rte_common.h           |  10 +
 lib/librte_vhost/virtio_net.c                 |  14 +-
 6 files changed, 139 insertions(+), 127 deletions(-)

-- 
2.27.0