From: Connor Abbott <cwabbott0@gmail.com>
Date: Fri, 1 May 2015 06:51:12 +0000 (-0400)
Subject: i965/nir: enable the dead control flow optimization
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1484d8c9aa2e7e78462ffb5c207394bef77af89b;p=mesa.git

i965/nir: enable the dead control flow optimization

total instructions in shared programs: 7541551 -> 7541381 (-0.00%)
instructions in affected programs:     3054 -> 2884 (-5.57%)
helped:                                29

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
---

diff --git a/src/mesa/drivers/dri/i965/brw_nir.c b/src/mesa/drivers/dri/i965/brw_nir.c
index 247b223f2e2..8f3edc5cf01 100644
--- a/src/mesa/drivers/dri/i965/brw_nir.c
+++ b/src/mesa/drivers/dri/i965/brw_nir.c
@@ -61,6 +61,8 @@ nir_optimize(nir_shader *nir, bool is_scalar)
       nir_validate_shader(nir);
       progress |= nir_opt_constant_folding(nir);
       nir_validate_shader(nir);
+      progress |= nir_opt_dead_cf(nir);
+      nir_validate_shader(nir);
       progress |= nir_opt_remove_phis(nir);
       nir_validate_shader(nir);
       progress |= nir_opt_undef(nir);