summaryrefslogtreecommitdiffstats
path: root/src/gallium/drivers/freedreno/ir3
diff options
context:
space:
mode:
authorRob Clark <[email protected]>2018-01-29 14:53:13 -0500
committerRob Clark <[email protected]>2018-02-10 14:54:58 -0500
commit268ab05484379a35a54c14de9c111a52d338b2fd (patch)
treea9295a4af7de41d2f5cc104dd893682c2232ed7f /src/gallium/drivers/freedreno/ir3
parent4c15c53d91dff8ec0573421e234940c99f8a54cb (diff)
freedreno/ir3: add experimental GCM pass
Generally seems to do worse on instruction count and register usage, according to shader-db. But shader-db also doesn't do a very good job of weighting loop bodies, so that might not be totally valid. So add an env variable to enable GCM pass for easier experimentation. Signed-off-by: Rob Clark <[email protected]>
Diffstat (limited to 'src/gallium/drivers/freedreno/ir3')
-rw-r--r--src/gallium/drivers/freedreno/ir3/ir3_nir.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/gallium/drivers/freedreno/ir3/ir3_nir.c b/src/gallium/drivers/freedreno/ir3/ir3_nir.c
index 3706a023d3c..6edb0e45749 100644
--- a/src/gallium/drivers/freedreno/ir3/ir3_nir.c
+++ b/src/gallium/drivers/freedreno/ir3/ir3_nir.c
@@ -97,6 +97,13 @@ ir3_optimize_loop(nir_shader *s)
progress |= OPT(s, nir_copy_prop);
progress |= OPT(s, nir_opt_dce);
progress |= OPT(s, nir_opt_cse);
+ static int gcm = -1;
+ if (gcm == -1)
+ gcm = env2u("GCM");
+ if (gcm == 1)
+ progress |= OPT(s, nir_opt_gcm, true);
+ else if (gcm == 2)
+ progress |= OPT(s, nir_opt_gcm, false);
progress |= OPT(s, nir_opt_peephole_select, 16);
progress |= OPT(s, nir_opt_intrinsics);
progress |= OPT(s, nir_opt_algebraic);