spirv: Add support for using derefs for UBO/SSBO access
[mesa.git] / src / amd / vulkan / radv_shader.c
index 9ffb4fb61579c899413f791774b7dc76119343d0..cc4bd1684f86254db3098b2ee0e1d6bb5b57b598 100644 (file)
@@ -30,6 +30,7 @@
 #include "radv_debug.h"
 #include "radv_private.h"
 #include "radv_shader.h"
+#include "radv_shader_helper.h"
 #include "nir/nir.h"
 #include "nir/nir_builder.h"
 #include "spirv/nir_spirv.h"
@@ -70,7 +71,6 @@ static const struct nir_shader_compiler_options nir_options = {
        .lower_extract_word = true,
        .lower_ffma = true,
        .lower_fpow = true,
-       .vs_inputs_dual_locations = true,
        .max_unroll_iterations = 32
 };
 
@@ -118,15 +118,32 @@ void radv_DestroyShaderModule(
 }
 
 void
-radv_optimize_nir(struct nir_shader *shader, bool optimize_conservatively)
+radv_optimize_nir(struct nir_shader *shader, bool optimize_conservatively,
+                  bool allow_copies)
 {
         bool progress;
 
         do {
                 progress = false;
 
+               NIR_PASS(progress, shader, nir_split_array_vars, nir_var_local);
+               NIR_PASS(progress, shader, nir_shrink_vec_array_vars, nir_var_local);
+
                 NIR_PASS_V(shader, nir_lower_vars_to_ssa);
                NIR_PASS_V(shader, nir_lower_pack);
+
+               if (allow_copies) {
+                       /* Only run this pass in the first call to
+                        * radv_optimize_nir.  Later calls assume that we've
+                        * lowered away any copy_deref instructions and we
+                        *  don't want to introduce any more.
+                       */
+                       NIR_PASS(progress, shader, nir_opt_find_array_copies);
+               }
+
+               NIR_PASS(progress, shader, nir_opt_copy_prop_vars);
+               NIR_PASS(progress, shader, nir_opt_dead_write_vars);
+
                 NIR_PASS_V(shader, nir_lower_alu_to_scalar);
                 NIR_PASS_V(shader, nir_lower_phis_to_scalar);
 
@@ -142,7 +159,7 @@ radv_optimize_nir(struct nir_shader *shader, bool optimize_conservatively)
                 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);
+                NIR_PASS(progress, shader, nir_opt_peephole_select, 8, true, true);
                 NIR_PASS(progress, shader, nir_opt_algebraic);
                 NIR_PASS(progress, shader, nir_opt_constant_folding);
                 NIR_PASS(progress, shader, nir_opt_undef);
@@ -172,13 +189,11 @@ radv_shader_compile_to_nir(struct radv_device *device,
                 * and just use the NIR shader */
                nir = module->nir;
                nir->options = &nir_options;
-               nir_validate_shader(nir);
+               nir_validate_shader(nir, "in internal shader");
 
                assert(exec_list_length(&nir->functions) == 1);
                struct exec_node *node = exec_list_get_head(&nir->functions);
                entry_point = exec_node_data(nir_function, node, node);
-
-               NIR_PASS_V(nir, nir_lower_deref_instrs, ~0);
        } else {
                uint32_t *spirv = (uint32_t *) module->data;
                assert(module->size % 4 == 0);
@@ -204,6 +219,7 @@ radv_shader_compile_to_nir(struct radv_device *device,
                        }
                }
                const struct spirv_to_nir_options spirv_options = {
+                       .lower_ubo_ssbo_access_to_offsets = true,
                        .caps = {
                                .device_group = true,
                                .draw_parameters = true,
@@ -212,7 +228,9 @@ radv_shader_compile_to_nir(struct radv_device *device,
                                .image_write_without_format = true,
                                .tessellation = true,
                                .int64 = true,
+                               .int16 = true,
                                .multiview = true,
+                               .subgroup_arithmetic = true,
                                .subgroup_ballot = true,
                                .subgroup_basic = true,
                                .subgroup_quad = true,
@@ -224,7 +242,16 @@ radv_shader_compile_to_nir(struct radv_device *device,
                                .shader_viewport_index_layer = true,
                                .descriptor_array_dynamic_indexing = true,
                                .runtime_descriptor_array = true,
+                               .stencil_export = true,
+                               .storage_16bit = true,
+                               .geometry_streams = true,
+                               .transform_feedback = true,
+                               .storage_image_ms = true,
                        },
+                       .ubo_ptr_type = glsl_vector_type(GLSL_TYPE_UINT, 2),
+                       .ssbo_ptr_type = glsl_vector_type(GLSL_TYPE_UINT, 2),
+                       .push_const_ptr_type = glsl_uint_type(),
+                       .shared_ptr_type = glsl_uint_type(),
                };
                entry_point = spirv_to_nir(spirv, module->size / 4,
                                           spec_entries, num_spec_entries,
@@ -232,7 +259,7 @@ radv_shader_compile_to_nir(struct radv_device *device,
                                           &spirv_options, &nir_options);
                nir = entry_point->shader;
                assert(nir->info.stage == stage);
-               nir_validate_shader(nir);
+               nir_validate_shader(nir, "after spirv_to_nir");
 
                free(spec_entries);
 
@@ -243,7 +270,7 @@ radv_shader_compile_to_nir(struct radv_device *device,
                NIR_PASS_V(nir, nir_lower_constant_initializers, nir_var_local);
                NIR_PASS_V(nir, nir_lower_returns);
                NIR_PASS_V(nir, nir_inline_functions);
-               NIR_PASS_V(nir, nir_copy_prop);
+               NIR_PASS_V(nir, nir_opt_deref);
 
                /* Pick off the single entrypoint that we want */
                foreach_list_typed_safe(nir_function, func, node, &nir->functions) {
@@ -253,16 +280,11 @@ radv_shader_compile_to_nir(struct radv_device *device,
                assert(exec_list_length(&nir->functions) == 1);
                entry_point->name = ralloc_strdup(entry_point, "main");
 
-               NIR_PASS_V(nir, nir_lower_deref_instrs, ~0);
-
                /* Make sure we lower constant initializers on output variables so that
                 * nir_remove_dead_variables below sees the corresponding stores
                 */
                NIR_PASS_V(nir, nir_lower_constant_initializers, nir_var_shader_out);
 
-               NIR_PASS_V(nir, nir_remove_dead_variables,
-                          nir_var_shader_in | nir_var_shader_out | nir_var_system_value);
-
                /* Now that we've deleted all but the main function, we can go ahead and
                 * lower the rest of the constant initializers.
                 */
@@ -274,6 +296,9 @@ radv_shader_compile_to_nir(struct radv_device *device,
                NIR_PASS_V(nir, nir_split_var_copies);
                NIR_PASS_V(nir, nir_split_per_member_structs);
 
+               NIR_PASS_V(nir, nir_remove_dead_variables,
+                          nir_var_shader_in | nir_var_shader_out | nir_var_system_value);
+
                NIR_PASS_V(nir, nir_lower_system_values);
                NIR_PASS_V(nir, nir_lower_clip_cull_distance_arrays);
        }
@@ -302,7 +327,6 @@ radv_shader_compile_to_nir(struct radv_device *device,
        }
 
        nir_split_var_copies(nir);
-       nir_lower_var_copies(nir);
 
        nir_lower_global_vars_to_local(nir);
        nir_remove_dead_variables(nir, nir_var_local);
@@ -316,8 +340,15 @@ radv_shader_compile_to_nir(struct radv_device *device,
                        .lower_vote_eq_to_ballot = 1,
                });
 
+       nir_lower_load_const_to_scalar(nir);
+
        if (!(flags & VK_PIPELINE_CREATE_DISABLE_OPTIMIZATION_BIT))
-               radv_optimize_nir(nir, false);
+               radv_optimize_nir(nir, false, true);
+
+       /* We call nir_lower_var_copies() after the first radv_optimize_nir()
+        * to remove any copies introduced by nir_opt_find_array_copies().
+        */
+       nir_lower_var_copies(nir);
 
        /* Indirect lowering must be called after the radv_optimize_nir() loop
         * has been called at least once. Otherwise indirect lowering can
@@ -325,7 +356,7 @@ radv_shader_compile_to_nir(struct radv_device *device,
         * considered too large for unrolling.
         */
        ac_lower_indirect_derefs(nir, device->physical_device->rad_info.chip_class);
-       radv_optimize_nir(nir, flags & VK_PIPELINE_CREATE_DISABLE_OPTIMIZATION_BIT);
+       radv_optimize_nir(nir, flags & VK_PIPELINE_CREATE_DISABLE_OPTIMIZATION_BIT, false);
 
        return nir;
 }
@@ -363,8 +394,8 @@ radv_alloc_shader_memory(struct radv_device *device,
        slab->bo = device->ws->buffer_create(device->ws, slab->size, 256,
                                             RADEON_DOMAIN_VRAM,
                                             RADEON_FLAG_NO_INTERPROCESS_SHARING |
-                                            device->physical_device->cpdma_prefetch_writes_memory ?
-                                                    0 : RADEON_FLAG_READ_ONLY);
+                                            (device->physical_device->cpdma_prefetch_writes_memory ?
+                                                    0 : RADEON_FLAG_READ_ONLY));
        slab->ptr = (char*)device->ws->buffer_map(slab->bo);
        list_inithead(&slab->shaders);
 
@@ -388,6 +419,16 @@ radv_destroy_shader_slabs(struct radv_device *device)
        mtx_destroy(&device->shader_slab_mutex);
 }
 
+/* For the UMR disassembler. */
+#define DEBUGGER_END_OF_CODE_MARKER    0xbf9f0000 /* invalid instruction */
+#define DEBUGGER_NUM_MARKERS           5
+
+static unsigned
+radv_get_shader_binary_size(struct ac_shader_binary *binary)
+{
+       return binary->code_size + DEBUGGER_NUM_MARKERS * 4;
+}
+
 static void
 radv_fill_shader_variant(struct radv_device *device,
                         struct radv_shader_variant *variant,
@@ -398,9 +439,15 @@ radv_fill_shader_variant(struct radv_device *device,
        struct radv_shader_info *info = &variant->info.info;
        unsigned vgpr_comp_cnt = 0;
 
-       variant->code_size = binary->code_size;
+       variant->code_size = radv_get_shader_binary_size(binary);
        variant->rsrc2 = S_00B12C_USER_SGPR(variant->info.num_user_sgprs) |
-                        S_00B12C_SCRATCH_EN(scratch_enabled);
+                        S_00B12C_USER_SGPR_MSB(variant->info.num_user_sgprs >> 5) |
+                        S_00B12C_SCRATCH_EN(scratch_enabled) |
+                        S_00B12C_SO_BASE0_EN(!!info->so.strides[0]) |
+                        S_00B12C_SO_BASE1_EN(!!info->so.strides[1]) |
+                        S_00B12C_SO_BASE2_EN(!!info->so.strides[2]) |
+                        S_00B12C_SO_BASE3_EN(!!info->so.strides[3]) |
+                        S_00B12C_SO_EN(!!info->so.num_outputs);
 
        variant->rsrc1 = S_00B848_VGPRS((variant->config.num_vgprs - 1) / 4) |
                S_00B848_SGPRS((variant->config.num_sgprs - 1) / 8) |
@@ -478,6 +525,12 @@ radv_fill_shader_variant(struct radv_device *device,
 
        void *ptr = radv_alloc_shader_memory(device, variant);
        memcpy(ptr, binary->code, binary->code_size);
+
+       /* Add end-of-code markers for the UMR disassembler. */
+       uint32_t *ptr32 = (uint32_t *)ptr + binary->code_size / 4;
+       for (unsigned i = 0; i < DEBUGGER_NUM_MARKERS; i++)
+               ptr32[i] = DEBUGGER_END_OF_CODE_MARKER;
+
 }
 
 static void radv_init_llvm_target()
@@ -501,59 +554,22 @@ static void radv_init_llvm_target()
         *
         * "mesa" is the prefix for error messages.
         */
-       const char *argv[3] = { "mesa", "-simplifycfg-sink-common=false",
-                               "-amdgpu-skip-threshold=1" };
-       LLVMParseCommandLineOptions(3, argv, NULL);
+       if (HAVE_LLVM >= 0x0800) {
+               const char *argv[2] = { "mesa", "-simplifycfg-sink-common=false" };
+               LLVMParseCommandLineOptions(2, argv, NULL);
+
+       } else {
+               const char *argv[3] = { "mesa", "-simplifycfg-sink-common=false",
+                                       "-amdgpu-skip-threshold=1" };
+               LLVMParseCommandLineOptions(3, argv, NULL);
+       }
 }
 
 static once_flag radv_init_llvm_target_once_flag = ONCE_FLAG_INIT;
 
-static LLVMTargetRef radv_get_llvm_target(const char *triple)
+static void radv_init_llvm_once(void)
 {
-       LLVMTargetRef target = NULL;
-       char *err_message = NULL;
-
        call_once(&radv_init_llvm_target_once_flag, radv_init_llvm_target);
-
-       if (LLVMGetTargetFromTriple(triple, &target, &err_message)) {
-               fprintf(stderr, "Cannot find target for triple %s ", triple);
-               if (err_message) {
-                       fprintf(stderr, "%s\n", err_message);
-               }
-               LLVMDisposeMessage(err_message);
-               return NULL;
-       }
-       return target;
-}
-
-static LLVMTargetMachineRef radv_create_target_machine(enum radeon_family family,
-                                                      enum ac_target_machine_options tm_options,
-                                                      const char **out_triple)
-{
-       assert(family >= CHIP_TAHITI);
-       char features[256];
-       const char *triple = (tm_options & AC_TM_SUPPORTS_SPILL) ? "amdgcn-mesa-mesa3d" : "amdgcn--";
-       LLVMTargetRef target = radv_get_llvm_target(triple);
-
-       snprintf(features, sizeof(features),
-                "+DumpCode,+vgpr-spilling,-fp32-denormals,+fp64-denormals%s%s%s%s",
-                tm_options & AC_TM_SISCHED ? ",+si-scheduler" : "",
-                tm_options & AC_TM_FORCE_ENABLE_XNACK ? ",+xnack" : "",
-                tm_options & AC_TM_FORCE_DISABLE_XNACK ? ",-xnack" : "",
-                tm_options & AC_TM_PROMOTE_ALLOCA_TO_SCRATCH ? ",-promote-alloca" : "");
-
-       LLVMTargetMachineRef tm = LLVMCreateTargetMachine(
-                                    target,
-                                    triple,
-                                    ac_get_llvm_processor_name(family),
-                                    features,
-                                    LLVMCodeGenLevelDefault,
-                                    LLVMRelocDefault,
-                                    LLVMCodeModelDefault);
-
-       if (out_triple)
-               *out_triple = triple;
-       return tm;
 }
 
 static struct radv_shader_variant *
@@ -571,8 +587,8 @@ shader_variant_create(struct radv_device *device,
        enum ac_target_machine_options tm_options = 0;
        struct radv_shader_variant *variant;
        struct ac_shader_binary binary;
-       LLVMTargetMachineRef tm;
-
+       struct ac_llvm_compiler ac_llvm;
+       bool thread_compiler;
        variant = calloc(1, sizeof(struct radv_shader_variant));
        if (!variant)
                return NULL;
@@ -591,20 +607,26 @@ shader_variant_create(struct radv_device *device,
                tm_options |= AC_TM_SUPPORTS_SPILL;
        if (device->instance->perftest_flags & RADV_PERFTEST_SISCHED)
                tm_options |= AC_TM_SISCHED;
-       tm = radv_create_target_machine(chip_family, tm_options, NULL);
-
+       if (options->check_ir)
+               tm_options |= AC_TM_CHECK_IR;
+
+       thread_compiler = !(device->instance->debug_flags & RADV_DEBUG_NOTHREADLLVM);
+       radv_init_llvm_once();
+       radv_init_llvm_compiler(&ac_llvm,
+                               thread_compiler,
+                               chip_family, tm_options);
        if (gs_copy_shader) {
                assert(shader_count == 1);
-               radv_compile_gs_copy_shader(tm, *shaders, &binary,
+               radv_compile_gs_copy_shader(&ac_llvm, *shaders, &binary,
                                            &variant->config, &variant->info,
                                            options);
        } else {
-               radv_compile_nir_shader(tm, &binary, &variant->config,
+               radv_compile_nir_shader(&ac_llvm, &binary, &variant->config,
                                        &variant->info, shaders, shader_count,
                                        options);
        }
 
-       LLVMDisposeTargetMachine(tm);
+       radv_destroy_llvm_compiler(&ac_llvm, thread_compiler);
 
        radv_fill_shader_variant(device, variant, &binary, stage);
 
@@ -850,6 +872,7 @@ radv_GetShaderInfoAMD(VkDevice _device,
                buf = _mesa_string_buffer_create(NULL, 1024);
 
                _mesa_string_buffer_printf(buf, "%s:\n", radv_get_shader_name(variant, stage));
+               _mesa_string_buffer_printf(buf, "%s\n\n", variant->llvm_ir_string);
                _mesa_string_buffer_printf(buf, "%s\n\n", variant->disasm_string);
                generate_shader_stats(device, variant, stage, buf);