Module: Mesa Branch: master Commit: 99d4203ad512023a47c8479ca0281dc3275886b8 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=99d4203ad512023a47c8479ca0281dc3275886b8
Author: Eric Anholt <[email protected]> Date: Fri Feb 24 14:18:39 2017 -0800 vc4: Emit max number of temps in the shader-db output. We need to be paying attention to optimization's impact on this -- even if we reduce instruction count, increasing max temps in general is likely to cause us to fail to register allocate on some shaders, which means that those won't run at all. --- src/gallium/drivers/vc4/vc4_qir_live_variables.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/src/gallium/drivers/vc4/vc4_qir_live_variables.c b/src/gallium/drivers/vc4/vc4_qir_live_variables.c index 330e1c8..7108b3e 100644 --- a/src/gallium/drivers/vc4/vc4_qir_live_variables.c +++ b/src/gallium/drivers/vc4/vc4_qir_live_variables.c @@ -327,4 +327,27 @@ qir_calculate_live_intervals(struct vc4_compile *c) ; qir_compute_start_end(c, c->num_temps); + + if (vc4_debug & VC4_DEBUG_SHADERDB) { + int last_ip = 0; + for (int i = 0; i < c->num_temps; i++) + last_ip = MAX2(last_ip, c->temp_end[i]); + + int reg_pressure = 0; + int max_reg_pressure = 0; + for (int i = 0; i < last_ip; i++) { + for (int j = 0; j < c->num_temps; j++) { + if (c->temp_start[j] == i) + reg_pressure++; + if (c->temp_end[j] == i) + reg_pressure--; + } + max_reg_pressure = MAX2(max_reg_pressure, reg_pressure); + } + + fprintf(stderr, "SHADER-DB: %s prog %d/%d: %d max temps\n", + qir_get_stage_name(c->stage), + c->program_id, c->variant_id, + max_reg_pressure); + } } _______________________________________________ mesa-commit mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-commit
