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brw/nir: Treat load_reloc_const_intel as convergent

Browse source 
shader-db:

Lunar Lake, Meteor Lake, DG2, and Tiger Lake had similar results. (Lunar Lake shown)
Lunar Lake
total instructions in shared programs: 18096549 -> 18096537 (<.01%)
instructions in affected programs: 26128 -> 26116 (-0.05%)
helped: 7 / HURT: 2

total cycles in shared programs: 922073090 -> 922093922 (<.01%)
cycles in affected programs: 10574198 -> 10595030 (0.20%)
helped: 19 / HURT: 76

Ice Lake and Skylake had similar results. (Ice Lake shown)
total instructions in shared programs: 20503943 -> 20504053 (<.01%)
instructions in affected programs: 23378 -> 23488 (0.47%)
helped: 6 / HURT: 5

total cycles in shared programs: 875477036 -> 875480112 (<.01%)
cycles in affected programs: 13840528 -> 13843604 (0.02%)
helped: 22 / HURT: 55

total spills in shared programs: 4546 -> 4552 (0.13%)
spills in affected programs: 8 -> 14 (75.00%)
helped: 0 / HURT: 1

total fills in shared programs: 5280 -> 5298 (0.34%)
fills in affected programs: 24 -> 42 (75.00%)
helped: 0 / HURT: 1

One compute shader in Tomb Raider was hurt for spills and fills.

fossil-db:

Lunar Lake
Totals:
Instrs: 141808815 -> 141808714 (-0.00%); split: -0.00%, +0.00%
Cycle count: 22185066952 -> 22177889310 (-0.03%); split: -0.05%, +0.02%
Spill count: 69859 -> 69892 (+0.05%); split: -0.03%, +0.07%
Fill count: 128344 -> 128313 (-0.02%); split: -0.04%, +0.01%
Scratch Memory Size: 5833728 -> 5829632 (-0.07%)

Totals from 13384 (2.43% of 551446) affected shaders:
Instrs: 13852162 -> 13852061 (-0.00%); split: -0.00%, +0.00%
Cycle count: 7691993336 -> 7684815694 (-0.09%); split: -0.15%, +0.06%
Spill count: 53266 -> 53299 (+0.06%); split: -0.03%, +0.10%
Fill count: 96492 -> 96461 (-0.03%); split: -0.05%, +0.02%
Scratch Memory Size: 3827712 -> 3823616 (-0.11%)

Meteor Lake and DG2 had similar results. (Meteor Lake shown)
Totals:
Instrs: 152744735 -> 152744298 (-0.00%); split: -0.00%, +0.00%
Cycle count: 17400199290 -> 17410258529 (+0.06%); split: -0.01%, +0.07%
Max live registers: 31887208 -> 31887206 (-0.00%)

Totals from 12435 (1.96% of 633315) affected shaders:
Instrs: 13445310 -> 13444873 (-0.00%); split: -0.00%, +0.00%
Cycle count: 6941685096 -> 6951744335 (+0.14%); split: -0.03%, +0.18%
Max live registers: 1071302 -> 1071300 (-0.00%)

Tiger Lake and Ice Lake had similar results. (Tiger Lake shown)
Totals:
Instrs: 150644063 -> 150643944 (-0.00%); split: -0.00%, +0.00%
Cycle count: 15618718733 -> 15622092285 (+0.02%); split: -0.01%, +0.03%
Spill count: 58816 -> 58790 (-0.04%)
Fill count: 101054 -> 101065 (+0.01%)
Max live registers: 31792771 -> 31792766 (-0.00%); split: -0.00%, +0.00%

Totals from 13383 (2.12% of 632544) affected shaders:
Instrs: 12016285 -> 12016166 (-0.00%); split: -0.00%, +0.00%
Cycle count: 5239956851 -> 5243330403 (+0.06%); split: -0.02%, +0.08%
Spill count: 28977 -> 28951 (-0.09%)
Fill count: 47568 -> 47579 (+0.02%)
Max live registers: 1001554 -> 1001549 (-0.00%); split: -0.00%, +0.00%

Skylake
Totals:
Instrs: 140943195 -> 140943154 (-0.00%); split: -0.00%, +0.00%
Cycle count: 14818940190 -> 14816706154 (-0.02%); split: -0.02%, +0.00%
Max live registers: 31663173 -> 31663168 (-0.00%); split: -0.00%, +0.00%

Totals from 12625 (2.01% of 629351) affected shaders:
Instrs: 11598223 -> 11598182 (-0.00%); split: -0.00%, +0.00%
Cycle count: 4519027823 -> 4516793787 (-0.05%); split: -0.05%, +0.00%
Max live registers: 970275 -> 970270 (-0.00%); split: -0.00%, +0.00%

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29884>
This commit is contained in:
Ian Romanick 2024-07-06 09:18:44 -07:00
parent fb9b363376
commit f3593df877
1 changed files with 5 additions and 15 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
src/intel/compiler/brw_fs_nir.cpp
View file

@ -1978,6 +1978,7 @@ get_nir_def(nir_to_brw_state &ntb, const nir_def &def, bool all_sources_uniform)
switch (instr->intrinsic) {
case nir_intrinsic_load_inline_data_intel:
case nir_intrinsic_load_reloc_const_intel:
case nir_intrinsic_load_workgroup_id:
is_scalar = true;
break;
@ -5030,13 +5031,7 @@ try_rebuild_source(nir_to_brw_state &ntb, const brw::fs_builder &bld,
}
case nir_intrinsic_load_reloc_const_intel: {
uint32_t id = nir_intrinsic_param_idx(intrin);
uint32_t base = nir_intrinsic_base(intrin);
brw_reg dst = ubld.vgrf(BRW_TYPE_D);
ntb.resource_insts[def->index] =
ubld.emit(SHADER_OPCODE_MOV_RELOC_IMM, dst,
brw_imm_ud(id), brw_imm_ud(base));
break;
unreachable("load_reloc_const_intel should already be is_scalar");
}
case nir_intrinsic_load_ubo_uniform_block_intel:
@ -6389,15 +6384,10 @@ fs_nir_emit_intrinsic(nir_to_brw_state &ntb,
uint32_t id = nir_intrinsic_param_idx(instr);
uint32_t base = nir_intrinsic_base(instr);
/* Emit the reloc in the smallest SIMD size to limit register usage. */
const fs_builder ubld = bld.exec_all().group(1, 0);
brw_reg small_dest = ubld.vgrf(dest.type);
ubld.UNDEF(small_dest);
ubld.exec_all().group(1, 0).emit(SHADER_OPCODE_MOV_RELOC_IMM, small_dest,
brw_imm_ud(id), brw_imm_ud(base));
assert(dest.is_scalar);
/* Copy propagation will get rid of this MOV. */
bld.MOV(dest, component(small_dest, 0));
xbld.emit(SHADER_OPCODE_MOV_RELOC_IMM, retype(dest, BRW_TYPE_D),
brw_imm_ud(id), brw_imm_ud(base));
break;
}