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pan/midgard: Compute work_count via writes

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This is exact.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
This commit is contained in:
Alyssa Rosenzweig 2019-08-21 15:02:41 -07:00
parent b9fb63859e
commit a89e368c7f
1 changed files with 25 additions and 1 deletions
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26
src/panfrost/midgard/disassemble.c
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@ -389,6 +389,18 @@ print_immediate(uint16_t imm)
printf("#%g", _mesa_half_to_float(imm));
}
static void
update_dest(unsigned reg)
{
/* We should record writes as marking this as a work register. Store
* the max register in work_count; we'll add one at the end */
if (reg < 16) {
midg_stats.work_count = MAX2(reg, midg_stats.work_count);
midg_ever_written |= (1 << reg);
}
}
static unsigned
print_dest(unsigned reg, midgard_reg_mode mode, midgard_dest_override override)
{
@ -401,6 +413,7 @@ print_dest(unsigned reg, midgard_reg_mode mode, midgard_dest_override override)
if (override != midgard_dest_override_none)
bits /= 2;
update_dest(reg);
print_reg(reg, bits);
return bits;
@ -641,6 +654,7 @@ print_scalar_field(const char *name, uint16_t *words, uint16_t reg_word,
printf(" ");
bool full = alu_field->output_full;
update_dest(reg_info->out_reg);
print_reg(reg_info->out_reg, full ? 32 : 16);
unsigned c = alu_field->output_component;
@ -1059,7 +1073,10 @@ print_load_store_instr(uint64_t data,
printf(" r%d", word->reg);
print_mask_4(word->mask);
int address = word->address;
unsigned address = word->address;
if (!OP_IS_STORE(word->op))
update_dest(word->reg);
bool is_ubo = OP_IS_UBO_READ(word->op);
@ -1394,6 +1411,7 @@ disassemble_midgard(uint8_t *code, size_t size)
/* Stats for shader-db */
memset(&midg_stats, 0, sizeof(midg_stats));
midg_ever_written = 0;
while (i < num_words) {
unsigned tag = words[i] & 0xF;
@ -1464,5 +1482,11 @@ disassemble_midgard(uint8_t *code, size_t size)
i += 4 * num_quad_words;
}
/* We computed work_count as max_work_registers, so add one to get the
* count. If no work registers are written, you still have one work
* reported, which is exactly what the hardware expects */
midg_stats.work_count++;
return midg_stats;
}