Mesa (master): i965/nir: use redundant phi optimization

[Connor Abbott]

Module: Mesa
Branch: master
Commit: ab24e1270674192d2aeb4ba0cc39497edb3342f8
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=ab24e1270674192d2aeb4ba0cc39497edb3342f8

Author: Connor Abbott <cwabbott0 at gmail.com>
Date:   Tue Feb  3 01:50:49 2015 -0500

i965/nir: use redundant phi optimization

Reviewed-by: Jason Ekstrand <jason.ekstrand at intel.com>
Tested-by: Jason Ekstrand <jason.ekstrand at intel.com>
Signed-off-by: Connor Abbott <cwabbott0 at gmail.com>

---

 src/mesa/drivers/dri/i965/brw_fs_nir.cpp |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
index 90980c7..c3c268c 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
@@ -52,6 +52,8 @@ nir_optimize(nir_shader *nir)
       nir_validate_shader(nir);
       progress |= nir_opt_constant_folding(nir);
       nir_validate_shader(nir);
+      progress |= nir_opt_remove_phis(nir);
+      nir_validate_shader(nir);
    } while (progress);
 }