radv: do not add extra SGPR when push constants are not used

This is not because the vertex stage needs some push constants
that other stages need them too. This should reduce the number
of loaded SGPRs in some situations.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>

diff --git a/src/amd/common/ac_shader_info.c b/src/amd/common/ac_shader_info.c
index 6aadb5032e27a2fa2eb8417e0848e851614bf2a1..ab5388fb53f588f7eed591ac858dae2c00bfc7a2 100644 (file)
--- a/src/amd/common/ac_shader_info.c
+++ b/src/amd/common/ac_shader_info.c
@@ -149,7 +149,8 @@ ac_nir_shader_info_pass(struct nir_shader *nir,
        struct nir_function *func = (struct nir_function *)exec_list_get_head(&nir->functions);
 
        info->needs_push_constants = false;
-       if (options->layout->push_constant_size ||
+       if ((options->layout->push_constant_size &&
+            options->layout->push_constant_stages & (1 << nir->info.stage)) ||
            options->layout->dynamic_offset_count)
                info->needs_push_constants = true;