On Sat, Apr 26, 2025 at 07:41:14PM +0200, Niklas Haas wrote: > From: Niklas Haas <g...@haasn.dev> > > This will serve as a reference for the SIMD backends to come. That said, > with auto-vectorization enabled, the performance of this is not atrocious, and > can often beat even the old SIMD. > > In theory, we can dramatically speed it up by using GCC vectors instead of > arrays, but the performance gains from this are too dependent on exact GCC > versions and flags, so it practice it's not a substitute for a SIMD > implementation. > --- > libswscale/Makefile | 6 + > libswscale/ops.c | 3 + > libswscale/ops.h | 2 - > libswscale/ops_backend.c | 101 ++++++ > libswscale/ops_backend.h | 181 +++++++++++ > libswscale/ops_tmpl_common.c | 176 ++++++++++ > libswscale/ops_tmpl_float.c | 255 +++++++++++++++ > libswscale/ops_tmpl_int.c | 609 +++++++++++++++++++++++++++++++++++ > 8 files changed, 1331 insertions(+), 2 deletions(-) > create mode 100644 libswscale/ops_backend.c > create mode 100644 libswscale/ops_backend.h > create mode 100644 libswscale/ops_tmpl_common.c > create mode 100644 libswscale/ops_tmpl_float.c > create mode 100644 libswscale/ops_tmpl_int.c
arm breaker
CC libswscale/ops_backend.o
In file included from src/libswscale/ops_backend.c:21:0:
src/libswscale/ops_tmpl_int.c:492:12: error: initializer element is not constant
fn(op_read_planar1),
^
src/libswscale/ops_backend.h:78:27: note: in definition of macro ‘bitfn2’
#define bitfn2(name, ext) name ## _ ## ext
^~~~
src/libswscale/ops_backend.h:82:19: note: in expansion of macro ‘bitfn’
#define fn(name) bitfn(name, FN_SUFFIX)
^~~~~
src/libswscale/ops_tmpl_int.c:492:9: note: in expansion of macro ‘fn’
fn(op_read_planar1),
^~
src/libswscale/ops_tmpl_int.c:492:12: note: (near initialization for
‘op_table_int_u8.entries[0]’)
fn(op_read_planar1),
^
src/libswscale/ops_backend.h:78:27: note: in definition of macro ‘bitfn2’
#define bitfn2(name, ext) name ## _ ## ext
^~~~
src/libswscale/ops_backend.h:82:19: note: in expansion of macro ‘bitfn’
#define fn(name) bitfn(name, FN_SUFFIX)
^~~~~
src/libswscale/ops_tmpl_int.c:492:9: note: in expansion of macro ‘fn’
fn(op_read_planar1),
^~
src/libswscale/ops_tmpl_int.c:493:12: error: initializer element is not constant
fn(op_read_planar2),
^
src/libswscale/ops_backend.h:78:27: note: in definition of macro ‘bitfn2’
#define bitfn2(name, ext) name ## _ ## ext
^~~~
src/libswscale/ops_backend.h:82:19: note: in expansion of macro ‘bitfn’
#define fn(name) bitfn(name, FN_SUFFIX)
^~~~~
src/libswscale/ops_tmpl_int.c:493:9: note: in expansion of macro ‘fn’
fn(op_read_planar2),
^~
src/libswscale/ops_tmpl_int.c:493:12: note: (near initialization for
‘op_table_int_u8.entries[1]’)
................
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
In a rich man's house there is no place to spit but his face.
-- Diogenes of Sinope
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