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aco: disable XNACK on all GPUs

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Affects code generation on GFX8 and GFX9 APUs where we misunderstood
the feature. XNACK replay is not being used with graphics APIs.

Totals from 41759 (65.90% of 63370) affected shaders: (Raven)

MaxWaves: 298672 -> 299000 (+0.11%)
Instrs: 19200726 -> 19138227 (-0.33%); split: -0.33%, +0.00%
CodeSize: 98501904 -> 98253196 (-0.25%); split: -0.26%, +0.00%
SGPRs: 3058544 -> 2831492 (-7.42%)
VGPRs: 1644896 -> 1643660 (-0.08%)
Latency: 193383803 -> 193224047 (-0.08%); split: -0.08%, +0.00%
InvThroughput: 92741082 -> 92698975 (-0.05%); split: -0.05%, +0.00%
SClause: 678580 -> 630107 (-7.14%); split: -7.15%, +0.00%
Copies: 1863375 -> 1863406 (+0.00%); split: -0.04%, +0.04%
VALU: 13791245 -> 13791267 (+0.00%); split: -0.00%, +0.00%
SALU: 2066726 -> 2066741 (+0.00%); split: -0.04%, +0.04%
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38701>
This commit is contained in:
Daniel Schürmann
2025-11-27 11:58:08 +01:00
committed by Marge Bot
parent b9c7cea719
commit 0db1ae1f01
1 changed files with 4 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
src/amd/compiler/aco_ir.cpp
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@@ -146,16 +146,10 @@ init_program(Program* program, Stage stage, const struct aco_shader_info* info,
program->dev.simd_per_cu = program->gfx_level >= GFX10 ? 2 : 4;
switch (program->family) {
/* GFX8 APUs */
case CHIP_CARRIZO:
case CHIP_STONEY:
/* GFX9 APUS */
case CHIP_RAVEN:
case CHIP_RAVEN2:
case CHIP_RENOIR: program->dev.xnack_enabled = true; break;
default: break;
}
/* XNACK replay can be used for demand paging and page migration.
* This is only relevant to GPGPU programming with unified shared memory.
*/
program->dev.xnack_enabled = false;
program->dev.sram_ecc_enabled = program->family == CHIP_VEGA20 ||
program->family == CHIP_MI100 || program->family == CHIP_MI200 ||