and _mesa_bitcount_64 with util_bitcount_64. This fixes a build problem
in nir for platforms that don't have popcount or popcountll, such as
32bit msvc.
v2: - Fix additional uses of _mesa_bitcount added after this was
originally written
Acked-by: Eric Engestrom <eric.engestrom@intel.com> (v1)
Acked-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This pass looks for variables with vector or array-of-vector types and
narrows the type to only the components used.
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
This pass looks for array variables where at least one level of the
array is never indirected and splits it into multiple smaller variables.
This pass doesn't really do much now because nir_lower_vars_to_ssa can
already see through arrays of arrays and can detect indirects on just
one level or even see that arr[i][0][5] does not alias arr[i][1][j].
This pass exists to help other passes more easily see through arrays of
arrays. If a back-end does implement arrays using scratch or indirects
on registers, having more smaller arrays is likely to have better memory
efficiency.
v2 (Jason Ekstrand):
- Better comments and naming (some from Caio)
- Rework to use one hash map instead of two
v2.1 (Jason Ekstrand):
- Fix a couple of bugs that were added in the rework including one
which basically prevented it from running
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
This pass doesn't really do much now because nir_lower_vars_to_ssa can
already see through structures and considers them to be "split". This
pass exists to help other passes more easily see through structure
variables. If a back-end does implement arrays using scratch or
indirects on registers, having more smaller arrays is likely to have
better memory efficiency.
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
