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pan/va: Add shader-db support 

Reports the common subset from Bifrost, as well as Mali offline compiler
style normalized cycle counts.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15223>
This commit is contained in:
Alyssa Rosenzweig 2021-08-02 12:30:54 -04:00 committed by Marge Bot
parent 8bc268f2d5
commit 18bf478f1e
1 changed files with 56 additions and 1 deletions
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57
src/panfrost/bifrost/bifrost_compile.c
View File

@ -30,6 +30,7 @@
#include "util/u_debug.h"
#include "disassemble.h"
#include "valhall/va_compiler.h"
#include "valhall/disassemble.h"
#include "bifrost_compile.h"
#include "compiler.h"
@ -3425,6 +3426,56 @@ bi_print_stats(bi_context *ctx, unsigned size, FILE *fp)
ralloc_free(str);
}
static void
va_print_stats(bi_context *ctx, unsigned size, FILE *fp)
{
unsigned nr_ins = 0;
struct va_stats stats = { 0 };
/* Count instructions */
bi_foreach_instr_global(ctx, I) {
nr_ins++;
va_count_instr_stats(I, &stats);
}
/* 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
*/
float cycles_fma = ((float) stats.fma) / 64.0;
float cycles_cvt = ((float) stats.cvt) / 64.0;
float cycles_sfu = ((float) stats.sfu) / 16.0;
float cycles_v = ((float) stats.v) / 16.0;
float cycles_t = ((float) stats.t) / 4.0;
float cycles_ls = ((float) stats.ls) / 1.0;
/* Calculate the bound */
float cycles = MAX2(
MAX3(cycles_fma, cycles_cvt, cycles_sfu),
MAX3(cycles_v, cycles_t, cycles_ls));
/* Thread count and register pressure are traded off */
unsigned nr_threads = (ctx->info.work_reg_count <= 32) ? 2 : 1;
/* Dump stats */
fprintf(stderr, "%s - %s shader: "
"%u inst, %f cycles, %f fma, %f cvt, %f sfu, %f v, "
"%f t, %f ls, %u quadwords, %u threads, %u loops, "
"%u:%u spills:fills\n",
ctx->nir->info.label ?: "",
bi_shader_stage_name(ctx),
nr_ins, cycles, cycles_fma, cycles_cvt, cycles_sfu,
cycles_v, cycles_t, cycles_ls, size / 16, nr_threads,
ctx->loop_count, ctx->spills, ctx->fills);
}
static int
glsl_type_size(const struct glsl_type *type, bool bindless)
{
@ -4198,7 +4249,11 @@ bi_compile_variant_nir(nir_shader *nir,
if ((bifrost_debug & BIFROST_DBG_SHADERDB || inputs->shaderdb) &&
!skip_internal) {
bi_print_stats(ctx, binary->size - offset, stderr);
if (ctx->arch >= 9) {
va_print_stats(ctx, binary->size - offset, stderr);
} else {
bi_print_stats(ctx, binary->size - offset, stderr);
}
}
return ctx;