radeonsi: consolidate max-work-group-size computation

The next commit will need this.

Cc: 13.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c
index 1e3be620e31c93bb341698e04744a59c67c3a319..b19c61e99d27d3829a43c0c059526da406b279b0 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -5361,6 +5361,23 @@ static void declare_tess_lds(struct si_shader_context *ctx)
                "tess_lds");
 }
 
+static unsigned si_get_max_workgroup_size(struct si_shader *shader)
+{
+       const unsigned *properties = shader->selector->info.properties;
+       unsigned max_work_group_size =
+                      properties[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH] *
+                      properties[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT] *
+                      properties[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH];
+
+       if (!max_work_group_size) {
+               /* This is a variable group size compute shader,
+                * compile it for the maximum possible group size.
+                */
+               max_work_group_size = SI_MAX_VARIABLE_THREADS_PER_BLOCK;
+       }
+       return max_work_group_size;
+}
+
 static void create_function(struct si_shader_context *ctx)
 {
        struct lp_build_tgsi_context *bld_base = &ctx->soa.bld_base;
@@ -5587,22 +5604,9 @@ static void create_function(struct si_shader_context *ctx)
                                      S_0286D0_FRONT_FACE_ENA(1) |
                                      S_0286D0_POS_FIXED_PT_ENA(1));
        } else if (ctx->type == PIPE_SHADER_COMPUTE) {
-               const unsigned *properties = shader->selector->info.properties;
-               unsigned max_work_group_size =
-                              properties[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH] *
-                              properties[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT] *
-                              properties[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH];
-
-               if (!max_work_group_size) {
-                       /* This is a variable group size compute shader,
-                        * compile it for the maximum possible group size.
-                        */
-                       max_work_group_size = SI_MAX_VARIABLE_THREADS_PER_BLOCK;
-               }
-
                si_llvm_add_attribute(ctx->main_fn,
                                      "amdgpu-max-work-group-size",
-                                     max_work_group_size);
+                                     si_get_max_workgroup_size(shader));
        }
 
        shader->info.num_input_sgprs = 0;
@@ -7270,20 +7274,11 @@ int si_compile_tgsi_shader(struct si_screen *sscreen,
         * LLVM 3.9svn has this bug.
         */
        if (sel->type == PIPE_SHADER_COMPUTE) {
-               unsigned *props = sel->info.properties;
                unsigned wave_size = 64;
                unsigned max_vgprs = 256;
                unsigned max_sgprs = sscreen->b.chip_class >= VI ? 800 : 512;
                unsigned max_sgprs_per_wave = 128;
-               unsigned max_block_threads;
-
-               if (props[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH])
-                       max_block_threads = props[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH] *
-                                           props[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT] *
-                                           props[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH];
-               else
-                       max_block_threads = SI_MAX_VARIABLE_THREADS_PER_BLOCK;
-
+               unsigned max_block_threads = si_get_max_workgroup_size(shader);
                unsigned min_waves_per_cu = DIV_ROUND_UP(max_block_threads, wave_size);
                unsigned min_waves_per_simd = DIV_ROUND_UP(min_waves_per_cu, 4);