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v3d: Include the number of max temps used in the shader-db output.

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This gives us finer-grained feedback on how we're doing on register
pressure than "did we trigger a new shader to spill or drop thread count?"
This commit is contained in:
Eric Anholt 2019-03-13 14:19:02 -07:00
parent 276ec879fd
commit b02dbaa8ce
1 changed files with 29 additions and 1 deletions
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30
src/broadcom/compiler/vir.c
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@ -814,6 +814,33 @@ v3d_nir_lower_fs_late(struct v3d_compile *c)
NIR_PASS_V(c->s, nir_lower_io_to_scalar, nir_var_shader_in);
}
static uint32_t
vir_get_max_temps(struct v3d_compile *c)
{
int max_ip = 0;
vir_for_each_inst_inorder(inst, c)
max_ip++;
uint32_t *pressure = rzalloc_array(NULL, uint32_t, max_ip);
for (int t = 0; t < c->num_temps; t++) {
for (int i = c->temp_start[t]; (i < c->temp_end[t] &&
i < max_ip); i++) {
if (i > max_ip)
break;
pressure[i]++;
}
}
uint32_t max_temps = 0;
for (int i = 0; i < max_ip; i++)
max_temps = MAX2(max_temps, pressure[i]);
ralloc_free(pressure);
return max_temps;
}
uint64_t *v3d_compile(const struct v3d_compiler *compiler,
struct v3d_key *key,
struct v3d_prog_data **out_prog_data,
@ -876,12 +903,13 @@ uint64_t *v3d_compile(const struct v3d_compiler *compiler,
char *shaderdb;
int ret = asprintf(&shaderdb,
"%s shader: %d inst, %d threads, %d loops, "
"%d uniforms, %d:%d spills:fills",
"%d uniforms, %d max-temps, %d:%d spills:fills",
vir_get_stage_name(c),
c->qpu_inst_count,
c->threads,
c->loops,
c->num_uniforms,
vir_get_max_temps(c),
c->spills,
c->fills);
if (ret >= 0) {