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anv/pipeline: Call nir_lower_system_valaues after brw_preprocess_nir

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We currently have a bug where nir_lower_system_values gets called before
nir_lower_var_copies so it will miss any system value uses which come
from a copy_var intrinsic.  Moving it to after brw_preprocess_nir fixes
this problem.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: mesa-stable@lists.freedesktop.org
(cherry picked from commit 279f8fb69c)
This commit is contained in:
Jason Ekstrand 2017-10-02 09:53:50 -07:00 • committed by Emil Velikov
parent 3b699fdd19
commit 2e33d68046
1 changed files with 2 additions and 1 deletions
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3
src/intel/vulkan/anv_pipeline.c
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@ -173,13 +173,14 @@ anv_shader_compile_to_nir(struct anv_pipeline *pipeline,
NIR_PASS_V(nir, nir_propagate_invariant);
NIR_PASS_V(nir, nir_lower_io_to_temporaries,
entry_point->impl, true, false);
NIR_PASS_V(nir, nir_lower_system_values);
/* Vulkan uses the separate-shader linking model */
nir->info.separate_shader = true;
nir = brw_preprocess_nir(compiler, nir);
NIR_PASS_V(nir, nir_lower_system_values);
if (stage == MESA_SHADER_FRAGMENT)
NIR_PASS_V(nir, anv_nir_lower_input_attachments);