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st/mesa: make use of nir_link_constant_varyings()

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Shader-db results radeonsi (VEGA):

Totals from affected shaders:
SGPRS: 161464 -> 161368 (-0.06 %)
VGPRS: 86904 -> 86292 (-0.70 %)
Spilled SGPRs: 296 -> 314 (6.08 %)
Spilled VGPRs: 0 -> 0 (0.00 %)
Private memory VGPRs: 0 -> 0 (0.00 %)
Scratch size: 0 -> 0 (0.00 %) dwords per thread
Code Size: 3618596 -> 3573852 (-1.24 %) bytes
LDS: 0 -> 0 (0.00 %) blocks
Max Waves: 26189 -> 26276 (0.33 %)
Wait states: 0 -> 0 (0.00 %)

Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Timothy Arceri 2018-11-10 09:20:10 +11:00
parent d40dd05553
commit 590fcb50e7
1 changed files with 3 additions and 0 deletions
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3
src/mesa/state_tracker/st_glsl_to_nir.cpp
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@ -588,6 +588,9 @@ st_nir_link_shaders(nir_shader **producer, nir_shader **consumer, bool scalar)
{
nir_lower_io_arrays_to_elements(*producer, *consumer);
if (nir_link_constant_varyings(*producer, *consumer))
st_nir_opts(*consumer, scalar);
NIR_PASS_V(*producer, nir_remove_dead_variables, nir_var_shader_out);
NIR_PASS_V(*consumer, nir_remove_dead_variables, nir_var_shader_in);