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radv: Add NIR loop unrolling.

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Not much effect on dota2/talos, but positive on deferred.

Signed-off-by: Bas Nieuwenhuizen <basni@google.com>
Reviewed-by: Timothy Arceri <timothy.arceri@itsqueeze.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Bas Nieuwenhuizen
2017-04-26 22:29:01 +02:00
parent 6f21b5601c
commit 14ae0bfa54
1 changed files with 10 additions and 0 deletions
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10
src/amd/vulkan/radv_pipeline.c
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@@ -62,6 +62,7 @@ static const struct nir_shader_compiler_options nir_options = {
.lower_unpack_unorm_4x8 = true,
.lower_extract_byte = true,
.lower_extract_word = true,
.max_unroll_iterations = 32
};
VkResult radv_CreateShaderModule(
@@ -153,6 +154,12 @@ radv_optimize_nir(struct nir_shader *shader)
NIR_PASS(progress, shader, nir_copy_prop);
NIR_PASS(progress, shader, nir_opt_remove_phis);
NIR_PASS(progress, shader, nir_opt_dce);
if (nir_opt_trivial_continues(shader)) {
progress = true;
NIR_PASS(progress, shader, nir_copy_prop);
NIR_PASS(progress, shader, nir_opt_dce);
}
NIR_PASS(progress, shader, nir_opt_if);
NIR_PASS(progress, shader, nir_opt_dead_cf);
NIR_PASS(progress, shader, nir_opt_cse);
NIR_PASS(progress, shader, nir_opt_peephole_select, 8);
@@ -160,6 +167,9 @@ radv_optimize_nir(struct nir_shader *shader)
NIR_PASS(progress, shader, nir_opt_constant_folding);
NIR_PASS(progress, shader, nir_opt_undef);
NIR_PASS(progress, shader, nir_opt_conditional_discard);
if (shader->options->max_unroll_iterations) {
NIR_PASS(progress, shader, nir_opt_loop_unroll, 0);
}
} while (progress);
}