radv: Move nir_opt_shrink_vectors() into the opt loop.

Upcoming changes to opt_undef will result in this pass doing more work and
generating vector MOVs that need re-scalarizing (which is inside of the
main opt loop).

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6054>

diff --git a/src/amd/vulkan/radv_shader.c b/src/amd/vulkan/radv_shader.c
index 16253979b0862ec1bd28dd84af2c0354a9a362aa..03cfe993bebc83776e1e881c1ffd7e42099e0d44 100644 (file)
--- a/src/amd/vulkan/radv_shader.c
+++ b/src/amd/vulkan/radv_shader.c
@@ -278,13 +278,13 @@ radv_optimize_nir(struct nir_shader *shader, bool optimize_conservatively,
                 }
 
                 NIR_PASS(progress, shader, nir_opt_undef);
+                NIR_PASS(progress, shader, nir_opt_shrink_vectors);
                 if (shader->options->max_unroll_iterations) {
                         NIR_PASS(progress, shader, nir_opt_loop_unroll, 0);
                 }
         } while (progress && !optimize_conservatively);
 
        NIR_PASS(progress, shader, nir_opt_conditional_discard);
-        NIR_PASS(progress, shader, nir_opt_shrink_vectors);
         NIR_PASS(progress, shader, nir_opt_move, nir_move_load_ubo);
 }