Mesa (master): turnip: use nir_opt_copy_prop_vars

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Module: Mesa
Branch: master
Commit: ee4fa15a86f0bb4d80261f149fa51ccbaddb6cb1
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=ee4fa15a86f0bb4d80261f149fa51ccbaddb6cb1

Author: Jonathan Marek <jonathan at marek.ca>
Date:   Thu Sep 26 00:30:22 2019 -0400

turnip: use nir_opt_copy_prop_vars

Avoids getting a "load_output" in a case like this:

   gl_Position = ubuf.MVP * ubuf.position[gl_VertexIndex];
   frag_pos = gl_Position.xyz;

Signed-off-by: Jonathan Marek <jonathan at marek.ca>
Reviewed-by: Kristian H. Kristensen <hoegsberg at google.com>
Acked-by: Eric Anholt <eric at anholt.net>

---

 src/freedreno/vulkan/tu_shader.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/freedreno/vulkan/tu_shader.c b/src/freedreno/vulkan/tu_shader.c
index 37edf82642b..2b68aeafffb 100644
--- a/src/freedreno/vulkan/tu_shader.c
+++ b/src/freedreno/vulkan/tu_shader.c
@@ -302,6 +302,8 @@ tu_shader_create(struct tu_device *dev,
    nir_assign_var_locations(&nir->uniforms, &nir->num_uniforms,
                             ir3_glsl_type_size);
 
+   NIR_PASS_V(nir, nir_opt_copy_prop_vars);
+
    NIR_PASS_V(nir, nir_lower_system_values);
    NIR_PASS_V(nir, nir_lower_frexp);