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pan/bi: Normalize with pan_model.rates

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Reviewed-by: Eric R. Smith <eric.smith@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37231>
This commit is contained in:
Christoph Pillmayer 2025-08-29 11:21:00 +00:00 • committed by Marge Bot
parent f091bdf392
commit a8ff0176de
2 changed files with 30 additions and 18 deletions
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1
src/panfrost/compiler/bifrost.h
View file

@ -50,6 +50,7 @@ extern "C" {
#define BIFROST_DBG_SPILL 0x1000
#define BIFROST_DBG_NOPSCHED 0x2000
#define BIFROST_DBG_NOSSARA 0x4000
#define BIFROST_DBG_STATSABS 0x8000
extern int bifrost_debug;

47
src/panfrost/compiler/bifrost_compile.c
View file

@ -60,6 +60,7 @@ static const struct debug_named_value bifrost_debug_options[] = {
{"nopreload", BIFROST_DBG_NOPRELOAD, "Disable message preloading"},
{"spill", BIFROST_DBG_SPILL, "Test register spilling"},
{"nossara", BIFROST_DBG_NOSSARA, "Disable SSA in register allocation"},
{"statsabs", BIFROST_DBG_STATSABS, "Don't normalize statistics"},
DEBUG_NAMED_VALUE_END
};
/* clang-format on */
@ -5110,33 +5111,43 @@ va_gather_stats(bi_context *ctx, unsigned size, struct valhall_stats *out)
va_count_instr_stats(I, &counts);
}
/* Mali G78 peak performance:
*
* 64 FMA instructions per cycle
* 64 CVT instructions per cycle
* 16 SFU instructions per cycle
* 8 x 32-bit varying channels interpolated per cycle
* 4 texture instructions per cycle
* 1 load/store operation per cycle
*/
*out = (struct valhall_stats){
const struct pan_model *model =
pan_get_model(ctx->inputs->gpu_id, ctx->inputs->gpu_variant);
if (model == NULL) {
/* Get G57 by default: */
model = pan_get_model(((uint32_t)0x9001) << 16, 0);
assert(model);
}
struct valhall_stats stats_abs = {
.instrs = nr_ins,
.code_size = size,
.fma = ((float)counts.fma) / 64.0,
.cvt = ((float)counts.cvt) / 64.0,
.sfu = ((float)counts.sfu) / 16.0,
.v = ((float)counts.v) / 16.0,
.t = ((float)counts.t) / 4.0,
.ls = ((float)counts.ls) / 1.0,
.fma = ((float)counts.fma),
.cvt = ((float)counts.cvt),
.sfu = ((float)counts.sfu),
.v = ((float)counts.v),
.t = ((float)counts.t),
.ls = ((float)counts.ls),
.threads = (ctx->info.work_reg_count <= 32) ? 2 : 1,
.loops = ctx->loop_count,
.spills = ctx->spills,
.fills = ctx->fills,
};
struct valhall_stats stats = stats_abs;
stats.fma /= model->rates.fma;
stats.cvt /= model->rates.fma;
stats.sfu /= (model->rates.fma / 4.0);
stats.v /= 16.0;
stats.t /= model->rates.texel;
stats.ls /= 1.0;
const bool output_normalized = !(bifrost_debug & BIFROST_DBG_STATSABS);
*out = output_normalized ? stats : stats_abs;
/* Calculate the bound */
out->cycles =
MAX2(MAX3(out->fma, out->cvt, out->sfu), MAX3(out->v, out->t, out->ls));
out->cycles = MAX2(MAX3(stats.fma, stats.cvt, stats.sfu),
MAX3(stats.v, stats.t, stats.ls));
}
/* Split stores to memory. We don't split stores to vertex outputs, since