Surface reads don't need them because they just have the one address
payload. With surface writes, on the other hand, we can put the address
and the data in the different halves and avoid building the payload all
together.
The decrease in register pressure and added freedom in register
allocation resulting from this change reduces spilling enough to improve
the performance of one customer benchmark by about 2x.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
This can occur during payload setup of SIMD-split send message
instructions, which can lead to the emission of header setup
instructions with a non-zero channel group and fixed SIMD width. Such
instructions could end up using undefined channel enable signals
except they don't care since they're always marked force_writemask_all.
Not known to affect correctness of any workload at this point, but it
would be trivial to back-port to stable if something comes up.
Reported-by: Sagar Ghuge <sagar.ghuge@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Tested-by: Sagar Ghuge <sagar.ghuge@intel.com>
This fixes a bunch of Vulkan subgroup tests on little core platforms.
Fixes: 4150920b95 "intel/fs: Add a helper for emitting scan operations"
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Tested-by: Mark Janes <mark.a.janes@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
v2 (idr): Don't allow CSEL with a non-float src2.
v3 (idr): Add CSEL to fs_inst::flags_written. Suggested by Matt.
v4 (idr): Only set BRW_ALIGN_16 on Gen < 10 (suggested by Matt). Don't
reset the access mode afterwards (suggested by Samuel and Matt). Add
support for CSEL not modifying the flags to more places (requested by
Matt).
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com> [v3]
Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit adds a helper to the builder for emitting "scan" operations.
Given a binary operation #, a scan takes the vector [a0, a1, ..., aN]
and returns the vector [a0, a0 # a1, ..., a0 # a1 # ... # aN] where each
channel contains the combination of all previous channels. The sequence
of instructions to perform the scan is fairly optimal; a 16-wide scan on
a 32-bit type is only 6 instructions. The subgroup scan and reduction
operations will be implemented in terms of this.
Acked-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
This shouldn't cause any functional change at this point, it changes
SHADER_OPCODE_FIND_LIVE_CHANNEL to use the flag register specified at
the IR level instead of the hard-coded f1.0, now that it can be
represented in backend_instruction::flag_subreg. This will be
necessary for scheduling to behave correctly once more things start
making use of f1.0.
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Mostly a dummy git mv with a couple of noticable parts:
- With the earlier header cleanups, nothing in src/intel depends
files from src/mesa/drivers/dri/i965/
- Both Autoconf and Android builds are addressed. Thanks to Mauro and
Tapani for the fixups in the latter
- brw_util.[ch] is not really compiler specific, so it's moved to i965.
v2:
- move brw_eu_defines.h instead of brw_defines.h
- remove no-longer applicable includes
- add missing vulkan/ prefix in the Android build (thanks Tapani)
v3:
- don't list brw_defines.h in src/intel/Makefile.sources (Jason)
- rebase on top of the oa patches
[Emil Velikov: commit message, various small fixes througout]
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
2017-03-13 11:16:34 +00:00
Renamed from src/mesa/drivers/dri/i965/brw_fs_builder.h (Browse further)
