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radv: Only run some optimizations when scalarization made progress

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These passes are called to clean up after scalarization, so
only call them when scalarization actually made progress.

No Fossil DB changes on Strix Halo (GFX11.5)

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33979>
This commit is contained in:
Timur Kristóf 2025-12-08 12:42:50 -06:00
parent 58020fdc01
commit 1106b0a1e2
1 changed files with 7 additions and 4 deletions
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11
src/amd/vulkan/radv_pipeline_graphics.c
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@ -1719,14 +1719,17 @@ radv_graphics_shaders_link_varyings(struct radv_shader_stage *stages, enum amd_g
/* Scalarize all I/O, because nir_opt_varyings and nir_opt_vectorize_io expect all I/O to be scalarized. */
nir_variable_mode sca_mode = nir_var_shader_in;
bool sca_progress;
if (s != MESA_SHADER_FRAGMENT)
sca_mode |= nir_var_shader_out;
NIR_PASS(_, shader, nir_lower_io_to_scalar, sca_mode, NULL, NULL);
NIR_PASS(sca_progress, shader, nir_lower_io_to_scalar, sca_mode, NULL, NULL);
/* Eliminate useless vec->mov copies resulting from scalarization. */
NIR_PASS(_, shader, nir_opt_copy_prop);
NIR_PASS(_, shader, nir_opt_constant_folding);
if (sca_progress) {
/* Eliminate useless vec->mov copies resulting from scalarization. */
NIR_PASS(_, shader, nir_opt_copy_prop);
NIR_PASS(_, shader, nir_opt_constant_folding);
}
}
int highest_changed_producer = -1;