The intervening_saturating_copy test is removed. The defs version of the
pass does not handle this case. It should not occur often in practice
anyway. Copy propagation and brw_nir_opt_fsat should prevent this
scenario from happening.
No shader-db changes on any Intel platform.
fossil-db:
All Intel platforms had similar results. (Lunar Lake shown)
Totals:
Instrs: 212677275 -> 212677278 (+0.00%)
Cycle count: 30466062848 -> 30466056040 (-0.00%)
Totals from 1 (0.00% of 706300) affected shaders:
Instrs: 1343 -> 1346 (+0.22%)
Cycle count: 411664 -> 404856 (-1.65%)
v2: Stop counting ip. The non-defs part of the pass was the only thing
that used it.
v3: Also delete "if (block != def->block) continue;" code. I noticed
this while working on some other changes to this function. It's the last
thing in the loop, so it's totally useless. Delete some other spurious
continues too.
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com> [v2]
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31497>
The premise of the change was wrong: the case where the defs analysis
was required was rare and requiring the analysis inside just the
case we care was being used for another analysis too. So for now,
the change doesn't really helps. I'll revisit this whole pass later on.
This backs out commit 6e19215810.
Acked-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34039>
Instead of calling `require()` every instruction, call it once per pass.
Even though the defs are cached (i.e. we are not re-calculating them every
instruction), this prevents the extra check and the call to analysis
validation.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34010>
- brw_lower_3src_null_dest: Allocating a new destination, so include
INSTRUCTION_DATA_FLOW class.
- brw_lower_alu_restriction: Removing instruction, so include
INSTRUCTION_IDENTITY. No details are changed so remove
INSTRUCTION_DETAIL.
- brw_lower_vgrfs_to_fixed_grfs: Changing source and destination
numbers, so include INSTRUCTION_DETAIL.
- brw_lower_send_gather: Insert new instructions (scalar register) and
change sources and other information on existing ones. So include
INSTRUCTION_DETAIL and INSTRUCTION_IDENTITY. Promote to INSTRUCTIONS.
- brw_opt_eliminate_find_live_channel: Can change source, so include
INSTRUCTION_DATA_FLOW.
- brw_opt_copy_propagation_defs and brw_opt_cse_defs: Both can remove
instructions, so include INSTRUCTION_IDENTITY. Promote to
INSTRUCTIONS.
- brw_opt_saturate_propagation: Instruction can have `sat` modified,
and operands can have type modified, so include INSTRUCTION_DETAIL.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33993>
