* USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
-#include "si_shader_internal.h"
-#include "si_pipe.h"
+#include "ac_nir_to_llvm.h"
#include "ac_rtld.h"
+#include "si_pipe.h"
+#include "si_shader_internal.h"
#include "sid.h"
-
#include "tgsi/tgsi_from_mesa.h"
#include "util/u_memory.h"
struct si_llvm_diagnostics {
- struct pipe_debug_callback *debug;
- unsigned retval;
+ struct pipe_debug_callback *debug;
+ unsigned retval;
};
static void si_diagnostic_handler(LLVMDiagnosticInfoRef di, void *context)
{
- struct si_llvm_diagnostics *diag = (struct si_llvm_diagnostics *)context;
- LLVMDiagnosticSeverity severity = LLVMGetDiagInfoSeverity(di);
- const char *severity_str = NULL;
-
- switch (severity) {
- case LLVMDSError:
- severity_str = "error";
- break;
- case LLVMDSWarning:
- severity_str = "warning";
- break;
- case LLVMDSRemark:
- case LLVMDSNote:
- default:
- return;
- }
-
- char *description = LLVMGetDiagInfoDescription(di);
-
- pipe_debug_message(diag->debug, SHADER_INFO,
- "LLVM diagnostic (%s): %s", severity_str, description);
-
- if (severity == LLVMDSError) {
- diag->retval = 1;
- fprintf(stderr,"LLVM triggered Diagnostic Handler: %s\n", description);
- }
-
- LLVMDisposeMessage(description);
-}
-
-int si_compile_llvm(struct si_screen *sscreen,
- struct si_shader_binary *binary,
- struct ac_shader_config *conf,
- struct ac_llvm_compiler *compiler,
- struct ac_llvm_context *ac,
- struct pipe_debug_callback *debug,
- enum pipe_shader_type shader_type,
- const char *name,
- bool less_optimized)
-{
- unsigned count = p_atomic_inc_return(&sscreen->num_compilations);
-
- if (si_can_dump_shader(sscreen, shader_type)) {
- fprintf(stderr, "radeonsi: Compiling shader %d\n", count);
-
- if (!(sscreen->debug_flags & (DBG(NO_IR) | DBG(PREOPT_IR)))) {
- fprintf(stderr, "%s LLVM IR:\n\n", name);
- ac_dump_module(ac->module);
- fprintf(stderr, "\n");
- }
- }
-
- if (sscreen->record_llvm_ir) {
- char *ir = LLVMPrintModuleToString(ac->module);
- binary->llvm_ir_string = strdup(ir);
- LLVMDisposeMessage(ir);
- }
-
- if (!si_replace_shader(count, binary)) {
- struct ac_compiler_passes *passes = compiler->passes;
-
- if (ac->wave_size == 32)
- passes = compiler->passes_wave32;
- else if (less_optimized && compiler->low_opt_passes)
- passes = compiler->low_opt_passes;
-
- struct si_llvm_diagnostics diag = {debug};
- LLVMContextSetDiagnosticHandler(ac->context, si_diagnostic_handler, &diag);
-
- if (!ac_compile_module_to_elf(passes, ac->module,
- (char **)&binary->elf_buffer,
- &binary->elf_size))
- diag.retval = 1;
-
- if (diag.retval != 0) {
- pipe_debug_message(debug, SHADER_INFO, "LLVM compilation failed");
- return diag.retval;
- }
- }
-
- struct ac_rtld_binary rtld;
- if (!ac_rtld_open(&rtld, (struct ac_rtld_open_info){
- .info = &sscreen->info,
- .shader_type = tgsi_processor_to_shader_stage(shader_type),
- .wave_size = ac->wave_size,
- .num_parts = 1,
- .elf_ptrs = &binary->elf_buffer,
- .elf_sizes = &binary->elf_size }))
- return -1;
-
- bool ok = ac_rtld_read_config(&rtld, conf);
- ac_rtld_close(&rtld);
- if (!ok)
- return -1;
-
- /* Enable 64-bit and 16-bit denormals, because there is no performance
- * cost.
- *
- * If denormals are enabled, all floating-point output modifiers are
- * ignored.
- *
- * Don't enable denormals for 32-bit floats, because:
- * - Floating-point output modifiers would be ignored by the hw.
- * - Some opcodes don't support denormals, such as v_mad_f32. We would
- * have to stop using those.
- * - GFX6 & GFX7 would be very slow.
- */
- conf->float_mode |= V_00B028_FP_64_DENORMS;
-
- return 0;
-}
-
-void si_llvm_context_init(struct si_shader_context *ctx,
- struct si_screen *sscreen,
- struct ac_llvm_compiler *compiler,
- unsigned wave_size)
-{
- memset(ctx, 0, sizeof(*ctx));
- ctx->screen = sscreen;
- ctx->compiler = compiler;
-
- ac_llvm_context_init(&ctx->ac, compiler, sscreen->info.chip_class,
- sscreen->info.family,
- AC_FLOAT_MODE_NO_SIGNED_ZEROS_FP_MATH,
- wave_size, 64);
-}
-
-void si_llvm_create_func(struct si_shader_context *ctx, const char *name,
- LLVMTypeRef *return_types, unsigned num_return_elems,
- unsigned max_workgroup_size)
-{
- LLVMTypeRef ret_type;
- enum ac_llvm_calling_convention call_conv;
- enum pipe_shader_type real_shader_type;
-
- if (num_return_elems)
- ret_type = LLVMStructTypeInContext(ctx->ac.context,
- return_types,
- num_return_elems, true);
- else
- ret_type = ctx->ac.voidt;
-
- real_shader_type = ctx->type;
-
- /* LS is merged into HS (TCS), and ES is merged into GS. */
- if (ctx->screen->info.chip_class >= GFX9) {
- if (ctx->shader->key.as_ls)
- real_shader_type = PIPE_SHADER_TESS_CTRL;
- else if (ctx->shader->key.as_es || ctx->shader->key.as_ngg)
- real_shader_type = PIPE_SHADER_GEOMETRY;
- }
-
- switch (real_shader_type) {
- case PIPE_SHADER_VERTEX:
- case PIPE_SHADER_TESS_EVAL:
- call_conv = AC_LLVM_AMDGPU_VS;
- break;
- case PIPE_SHADER_TESS_CTRL:
- call_conv = AC_LLVM_AMDGPU_HS;
- break;
- case PIPE_SHADER_GEOMETRY:
- call_conv = AC_LLVM_AMDGPU_GS;
- break;
- case PIPE_SHADER_FRAGMENT:
- call_conv = AC_LLVM_AMDGPU_PS;
- break;
- case PIPE_SHADER_COMPUTE:
- call_conv = AC_LLVM_AMDGPU_CS;
- break;
- default:
- unreachable("Unhandle shader type");
- }
-
- /* Setup the function */
- ctx->return_type = ret_type;
- ctx->main_fn = ac_build_main(&ctx->args, &ctx->ac, call_conv, name,
- ret_type, ctx->ac.module);
- ctx->return_value = LLVMGetUndef(ctx->return_type);
-
- if (ctx->screen->info.address32_hi) {
- ac_llvm_add_target_dep_function_attr(ctx->main_fn,
- "amdgpu-32bit-address-high-bits",
- ctx->screen->info.address32_hi);
- }
-
- LLVMAddTargetDependentFunctionAttr(ctx->main_fn,
- "no-signed-zeros-fp-math",
- "true");
-
- ac_llvm_set_workgroup_size(ctx->main_fn, max_workgroup_size);
+ struct si_llvm_diagnostics *diag = (struct si_llvm_diagnostics *)context;
+ LLVMDiagnosticSeverity severity = LLVMGetDiagInfoSeverity(di);
+ const char *severity_str = NULL;
+
+ switch (severity) {
+ case LLVMDSError:
+ severity_str = "error";
+ break;
+ case LLVMDSWarning:
+ severity_str = "warning";
+ break;
+ case LLVMDSRemark:
+ case LLVMDSNote:
+ default:
+ return;
+ }
+
+ char *description = LLVMGetDiagInfoDescription(di);
+
+ pipe_debug_message(diag->debug, SHADER_INFO, "LLVM diagnostic (%s): %s", severity_str,
+ description);
+
+ if (severity == LLVMDSError) {
+ diag->retval = 1;
+ fprintf(stderr, "LLVM triggered Diagnostic Handler: %s\n", description);
+ }
+
+ LLVMDisposeMessage(description);
+}
+
+bool si_compile_llvm(struct si_screen *sscreen, struct si_shader_binary *binary,
+ struct ac_shader_config *conf, struct ac_llvm_compiler *compiler,
+ struct ac_llvm_context *ac, struct pipe_debug_callback *debug,
+ enum pipe_shader_type shader_type, const char *name, bool less_optimized)
+{
+ unsigned count = p_atomic_inc_return(&sscreen->num_compilations);
+
+ if (si_can_dump_shader(sscreen, shader_type)) {
+ fprintf(stderr, "radeonsi: Compiling shader %d\n", count);
+
+ if (!(sscreen->debug_flags & (DBG(NO_IR) | DBG(PREOPT_IR)))) {
+ fprintf(stderr, "%s LLVM IR:\n\n", name);
+ ac_dump_module(ac->module);
+ fprintf(stderr, "\n");
+ }
+ }
+
+ if (sscreen->record_llvm_ir) {
+ char *ir = LLVMPrintModuleToString(ac->module);
+ binary->llvm_ir_string = strdup(ir);
+ LLVMDisposeMessage(ir);
+ }
+
+ if (!si_replace_shader(count, binary)) {
+ struct ac_compiler_passes *passes = compiler->passes;
+
+ if (ac->wave_size == 32)
+ passes = compiler->passes_wave32;
+ else if (less_optimized && compiler->low_opt_passes)
+ passes = compiler->low_opt_passes;
+
+ struct si_llvm_diagnostics diag = {debug};
+ LLVMContextSetDiagnosticHandler(ac->context, si_diagnostic_handler, &diag);
+
+ if (!ac_compile_module_to_elf(passes, ac->module, (char **)&binary->elf_buffer,
+ &binary->elf_size))
+ diag.retval = 1;
+
+ if (diag.retval != 0) {
+ pipe_debug_message(debug, SHADER_INFO, "LLVM compilation failed");
+ return false;
+ }
+ }
+
+ struct ac_rtld_binary rtld;
+ if (!ac_rtld_open(&rtld, (struct ac_rtld_open_info){
+ .info = &sscreen->info,
+ .shader_type = tgsi_processor_to_shader_stage(shader_type),
+ .wave_size = ac->wave_size,
+ .num_parts = 1,
+ .elf_ptrs = &binary->elf_buffer,
+ .elf_sizes = &binary->elf_size}))
+ return false;
+
+ bool ok = ac_rtld_read_config(&sscreen->info, &rtld, conf);
+ ac_rtld_close(&rtld);
+ return ok;
+}
+
+void si_llvm_context_init(struct si_shader_context *ctx, struct si_screen *sscreen,
+ struct ac_llvm_compiler *compiler, unsigned wave_size)
+{
+ memset(ctx, 0, sizeof(*ctx));
+ ctx->screen = sscreen;
+ ctx->compiler = compiler;
+
+ ac_llvm_context_init(&ctx->ac, compiler, sscreen->info.chip_class, sscreen->info.family,
+ AC_FLOAT_MODE_DEFAULT_OPENGL, wave_size, 64);
+}
+
+void si_llvm_create_func(struct si_shader_context *ctx, const char *name, LLVMTypeRef *return_types,
+ unsigned num_return_elems, unsigned max_workgroup_size)
+{
+ LLVMTypeRef ret_type;
+ enum ac_llvm_calling_convention call_conv;
+
+ if (num_return_elems)
+ ret_type = LLVMStructTypeInContext(ctx->ac.context, return_types, num_return_elems, true);
+ else
+ ret_type = ctx->ac.voidt;
+
+ gl_shader_stage real_stage = ctx->stage;
+
+ /* LS is merged into HS (TCS), and ES is merged into GS. */
+ if (ctx->screen->info.chip_class >= GFX9) {
+ if (ctx->shader->key.as_ls)
+ real_stage = MESA_SHADER_TESS_CTRL;
+ else if (ctx->shader->key.as_es || ctx->shader->key.as_ngg)
+ real_stage = MESA_SHADER_GEOMETRY;
+ }
+
+ switch (real_stage) {
+ case MESA_SHADER_VERTEX:
+ case MESA_SHADER_TESS_EVAL:
+ call_conv = AC_LLVM_AMDGPU_VS;
+ break;
+ case MESA_SHADER_TESS_CTRL:
+ call_conv = AC_LLVM_AMDGPU_HS;
+ break;
+ case MESA_SHADER_GEOMETRY:
+ call_conv = AC_LLVM_AMDGPU_GS;
+ break;
+ case MESA_SHADER_FRAGMENT:
+ call_conv = AC_LLVM_AMDGPU_PS;
+ break;
+ case MESA_SHADER_COMPUTE:
+ call_conv = AC_LLVM_AMDGPU_CS;
+ break;
+ default:
+ unreachable("Unhandle shader type");
+ }
+
+ /* Setup the function */
+ ctx->return_type = ret_type;
+ ctx->main_fn = ac_build_main(&ctx->args, &ctx->ac, call_conv, name, ret_type, ctx->ac.module);
+ ctx->return_value = LLVMGetUndef(ctx->return_type);
+
+ if (ctx->screen->info.address32_hi) {
+ ac_llvm_add_target_dep_function_attr(ctx->main_fn, "amdgpu-32bit-address-high-bits",
+ ctx->screen->info.address32_hi);
+ }
+
+ LLVMAddTargetDependentFunctionAttr(ctx->main_fn, "no-signed-zeros-fp-math", "true");
+
+ ac_llvm_set_workgroup_size(ctx->main_fn, max_workgroup_size);
}
void si_llvm_optimize_module(struct si_shader_context *ctx)
{
- /* Dump LLVM IR before any optimization passes */
- if (ctx->screen->debug_flags & DBG(PREOPT_IR) &&
- si_can_dump_shader(ctx->screen, ctx->type))
- LLVMDumpModule(ctx->ac.module);
+ /* Dump LLVM IR before any optimization passes */
+ if (ctx->screen->debug_flags & DBG(PREOPT_IR) && si_can_dump_shader(ctx->screen, ctx->type))
+ LLVMDumpModule(ctx->ac.module);
- /* Run the pass */
- LLVMRunPassManager(ctx->compiler->passmgr, ctx->ac.module);
- LLVMDisposeBuilder(ctx->ac.builder);
+ /* Run the pass */
+ LLVMRunPassManager(ctx->compiler->passmgr, ctx->ac.module);
+ LLVMDisposeBuilder(ctx->ac.builder);
}
void si_llvm_dispose(struct si_shader_context *ctx)
{
- LLVMDisposeModule(ctx->ac.module);
- LLVMContextDispose(ctx->ac.context);
- ac_llvm_context_dispose(&ctx->ac);
+ LLVMDisposeModule(ctx->ac.module);
+ LLVMContextDispose(ctx->ac.context);
+ ac_llvm_context_dispose(&ctx->ac);
+}
+
+/**
+ * Load a dword from a constant buffer.
+ */
+LLVMValueRef si_buffer_load_const(struct si_shader_context *ctx, LLVMValueRef resource,
+ LLVMValueRef offset)
+{
+ return ac_build_buffer_load(&ctx->ac, resource, 1, NULL, offset, NULL, 0, 0, true, true);
+}
+
+void si_llvm_build_ret(struct si_shader_context *ctx, LLVMValueRef ret)
+{
+ if (LLVMGetTypeKind(LLVMTypeOf(ret)) == LLVMVoidTypeKind)
+ LLVMBuildRetVoid(ctx->ac.builder);
+ else
+ LLVMBuildRet(ctx->ac.builder, ret);
+}
+
+LLVMValueRef si_insert_input_ret(struct si_shader_context *ctx, LLVMValueRef ret,
+ struct ac_arg param, unsigned return_index)
+{
+ return LLVMBuildInsertValue(ctx->ac.builder, ret, ac_get_arg(&ctx->ac, param), return_index, "");
+}
+
+LLVMValueRef si_insert_input_ret_float(struct si_shader_context *ctx, LLVMValueRef ret,
+ struct ac_arg param, unsigned return_index)
+{
+ LLVMBuilderRef builder = ctx->ac.builder;
+ LLVMValueRef p = ac_get_arg(&ctx->ac, param);
+
+ return LLVMBuildInsertValue(builder, ret, ac_to_float(&ctx->ac, p), return_index, "");
+}
+
+LLVMValueRef si_insert_input_ptr(struct si_shader_context *ctx, LLVMValueRef ret,
+ struct ac_arg param, unsigned return_index)
+{
+ LLVMBuilderRef builder = ctx->ac.builder;
+ LLVMValueRef ptr = ac_get_arg(&ctx->ac, param);
+ ptr = LLVMBuildPtrToInt(builder, ptr, ctx->ac.i32, "");
+ return LLVMBuildInsertValue(builder, ret, ptr, return_index, "");
+}
+
+LLVMValueRef si_prolog_get_rw_buffers(struct si_shader_context *ctx)
+{
+ LLVMValueRef ptr[2], list;
+ bool merged_shader = si_is_merged_shader(ctx->shader);
+
+ ptr[0] = LLVMGetParam(ctx->main_fn, (merged_shader ? 8 : 0) + SI_SGPR_RW_BUFFERS);
+ list =
+ LLVMBuildIntToPtr(ctx->ac.builder, ptr[0], ac_array_in_const32_addr_space(ctx->ac.v4i32), "");
+ return list;
+}
+
+LLVMValueRef si_build_gather_64bit(struct si_shader_context *ctx, LLVMTypeRef type,
+ LLVMValueRef val1, LLVMValueRef val2)
+{
+ LLVMValueRef values[2] = {
+ ac_to_integer(&ctx->ac, val1),
+ ac_to_integer(&ctx->ac, val2),
+ };
+ LLVMValueRef result = ac_build_gather_values(&ctx->ac, values, 2);
+ return LLVMBuildBitCast(ctx->ac.builder, result, type, "");
+}
+
+void si_llvm_emit_barrier(struct si_shader_context *ctx)
+{
+ /* GFX6 only (thanks to a hw bug workaround):
+ * The real barrier instruction isn’t needed, because an entire patch
+ * always fits into a single wave.
+ */
+ if (ctx->screen->info.chip_class == GFX6 && ctx->stage == MESA_SHADER_TESS_CTRL) {
+ ac_build_waitcnt(&ctx->ac, AC_WAIT_LGKM | AC_WAIT_VLOAD | AC_WAIT_VSTORE);
+ return;
+ }
+
+ ac_build_s_barrier(&ctx->ac);
+}
+
+/* Ensure that the esgs ring is declared.
+ *
+ * We declare it with 64KB alignment as a hint that the
+ * pointer value will always be 0.
+ */
+void si_llvm_declare_esgs_ring(struct si_shader_context *ctx)
+{
+ if (ctx->esgs_ring)
+ return;
+
+ assert(!LLVMGetNamedGlobal(ctx->ac.module, "esgs_ring"));
+
+ ctx->esgs_ring = LLVMAddGlobalInAddressSpace(ctx->ac.module, LLVMArrayType(ctx->ac.i32, 0),
+ "esgs_ring", AC_ADDR_SPACE_LDS);
+ LLVMSetLinkage(ctx->esgs_ring, LLVMExternalLinkage);
+ LLVMSetAlignment(ctx->esgs_ring, 64 * 1024);
+}
+
+void si_init_exec_from_input(struct si_shader_context *ctx, struct ac_arg param, unsigned bitoffset)
+{
+ LLVMValueRef args[] = {
+ ac_get_arg(&ctx->ac, param),
+ LLVMConstInt(ctx->ac.i32, bitoffset, 0),
+ };
+ ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.init.exec.from.input", ctx->ac.voidt, args, 2,
+ AC_FUNC_ATTR_CONVERGENT);
+}
+
+/**
+ * Get the value of a shader input parameter and extract a bitfield.
+ */
+static LLVMValueRef unpack_llvm_param(struct si_shader_context *ctx, LLVMValueRef value,
+ unsigned rshift, unsigned bitwidth)
+{
+ if (LLVMGetTypeKind(LLVMTypeOf(value)) == LLVMFloatTypeKind)
+ value = ac_to_integer(&ctx->ac, value);
+
+ if (rshift)
+ value = LLVMBuildLShr(ctx->ac.builder, value, LLVMConstInt(ctx->ac.i32, rshift, 0), "");
+
+ if (rshift + bitwidth < 32) {
+ unsigned mask = (1 << bitwidth) - 1;
+ value = LLVMBuildAnd(ctx->ac.builder, value, LLVMConstInt(ctx->ac.i32, mask, 0), "");
+ }
+
+ return value;
+}
+
+LLVMValueRef si_unpack_param(struct si_shader_context *ctx, struct ac_arg param, unsigned rshift,
+ unsigned bitwidth)
+{
+ LLVMValueRef value = ac_get_arg(&ctx->ac, param);
+
+ return unpack_llvm_param(ctx, value, rshift, bitwidth);
+}
+
+LLVMValueRef si_get_primitive_id(struct si_shader_context *ctx, unsigned swizzle)
+{
+ if (swizzle > 0)
+ return ctx->ac.i32_0;
+
+ switch (ctx->stage) {
+ case MESA_SHADER_VERTEX:
+ return ac_get_arg(&ctx->ac, ctx->vs_prim_id);
+ case MESA_SHADER_TESS_CTRL:
+ return ac_get_arg(&ctx->ac, ctx->args.tcs_patch_id);
+ case MESA_SHADER_TESS_EVAL:
+ return ac_get_arg(&ctx->ac, ctx->args.tes_patch_id);
+ case MESA_SHADER_GEOMETRY:
+ return ac_get_arg(&ctx->ac, ctx->args.gs_prim_id);
+ default:
+ assert(0);
+ return ctx->ac.i32_0;
+ }
+}
+
+LLVMValueRef si_llvm_get_block_size(struct ac_shader_abi *abi)
+{
+ struct si_shader_context *ctx = si_shader_context_from_abi(abi);
+
+ LLVMValueRef values[3];
+ LLVMValueRef result;
+ unsigned i;
+ unsigned *properties = ctx->shader->selector->info.properties;
+
+ if (properties[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH] != 0) {
+ unsigned sizes[3] = {properties[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH],
+ properties[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT],
+ properties[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH]};
+
+ for (i = 0; i < 3; ++i)
+ values[i] = LLVMConstInt(ctx->ac.i32, sizes[i], 0);
+
+ result = ac_build_gather_values(&ctx->ac, values, 3);
+ } else {
+ result = ac_get_arg(&ctx->ac, ctx->block_size);
+ }
+
+ return result;
+}
+
+void si_llvm_declare_compute_memory(struct si_shader_context *ctx)
+{
+ struct si_shader_selector *sel = ctx->shader->selector;
+ unsigned lds_size = sel->info.properties[TGSI_PROPERTY_CS_LOCAL_SIZE];
+
+ LLVMTypeRef i8p = LLVMPointerType(ctx->ac.i8, AC_ADDR_SPACE_LDS);
+ LLVMValueRef var;
+
+ assert(!ctx->ac.lds);
+
+ var = LLVMAddGlobalInAddressSpace(ctx->ac.module, LLVMArrayType(ctx->ac.i8, lds_size),
+ "compute_lds", AC_ADDR_SPACE_LDS);
+ LLVMSetAlignment(var, 64 * 1024);
+
+ ctx->ac.lds = LLVMBuildBitCast(ctx->ac.builder, var, i8p, "");
+}
+
+bool si_nir_build_llvm(struct si_shader_context *ctx, struct nir_shader *nir)
+{
+ if (nir->info.stage == MESA_SHADER_VERTEX) {
+ si_llvm_load_vs_inputs(ctx, nir);
+ } else if (nir->info.stage == MESA_SHADER_FRAGMENT) {
+ unsigned colors_read = ctx->shader->selector->info.colors_read;
+ LLVMValueRef main_fn = ctx->main_fn;
+
+ LLVMValueRef undef = LLVMGetUndef(ctx->ac.f32);
+
+ unsigned offset = SI_PARAM_POS_FIXED_PT + 1;
+
+ if (colors_read & 0x0f) {
+ unsigned mask = colors_read & 0x0f;
+ LLVMValueRef values[4];
+ values[0] = mask & 0x1 ? LLVMGetParam(main_fn, offset++) : undef;
+ values[1] = mask & 0x2 ? LLVMGetParam(main_fn, offset++) : undef;
+ values[2] = mask & 0x4 ? LLVMGetParam(main_fn, offset++) : undef;
+ values[3] = mask & 0x8 ? LLVMGetParam(main_fn, offset++) : undef;
+ ctx->abi.color0 = ac_to_integer(&ctx->ac, ac_build_gather_values(&ctx->ac, values, 4));
+ }
+ if (colors_read & 0xf0) {
+ unsigned mask = (colors_read & 0xf0) >> 4;
+ LLVMValueRef values[4];
+ values[0] = mask & 0x1 ? LLVMGetParam(main_fn, offset++) : undef;
+ values[1] = mask & 0x2 ? LLVMGetParam(main_fn, offset++) : undef;
+ values[2] = mask & 0x4 ? LLVMGetParam(main_fn, offset++) : undef;
+ values[3] = mask & 0x8 ? LLVMGetParam(main_fn, offset++) : undef;
+ ctx->abi.color1 = ac_to_integer(&ctx->ac, ac_build_gather_values(&ctx->ac, values, 4));
+ }
+
+ ctx->abi.interp_at_sample_force_center =
+ ctx->shader->key.mono.u.ps.interpolate_at_sample_force_center;
+
+ ctx->abi.kill_ps_if_inf_interp =
+ (ctx->screen->debug_flags & DBG(KILL_PS_INF_INTERP)) &&
+ (ctx->shader->selector->info.uses_persp_center ||
+ ctx->shader->selector->info.uses_persp_centroid ||
+ ctx->shader->selector->info.uses_persp_sample);
+
+ } else if (nir->info.stage == MESA_SHADER_COMPUTE) {
+ if (nir->info.cs.user_data_components_amd) {
+ ctx->abi.user_data = ac_get_arg(&ctx->ac, ctx->cs_user_data);
+ ctx->abi.user_data = ac_build_expand_to_vec4(&ctx->ac, ctx->abi.user_data,
+ nir->info.cs.user_data_components_amd);
+ }
+ }
+
+ ctx->abi.inputs = &ctx->inputs[0];
+ ctx->abi.clamp_shadow_reference = true;
+ ctx->abi.robust_buffer_access = true;
+ ctx->abi.convert_undef_to_zero = true;
+ ctx->abi.clamp_div_by_zero = ctx->screen->options.clamp_div_by_zero;
+
+ if (ctx->shader->selector->info.properties[TGSI_PROPERTY_CS_LOCAL_SIZE]) {
+ assert(gl_shader_stage_is_compute(nir->info.stage));
+ si_llvm_declare_compute_memory(ctx);
+ }
+
+ const struct si_shader_info *info = &ctx->shader->selector->info;
+ for (unsigned i = 0; i < info->num_outputs; i++) {
+ for (unsigned j = 0; j < 4; j++)
+ ctx->abi.outputs[i * 4 + j] = ac_build_alloca_undef(&ctx->ac, ctx->ac.f32, "");
+ }
+
+ ac_nir_translate(&ctx->ac, &ctx->abi, &ctx->args, nir);
+
+ return true;
+}
+
+/**
+ * Given a list of shader part functions, build a wrapper function that
+ * runs them in sequence to form a monolithic shader.
+ */
+void si_build_wrapper_function(struct si_shader_context *ctx, LLVMValueRef *parts,
+ unsigned num_parts, unsigned main_part,
+ unsigned next_shader_first_part)
+{
+ LLVMBuilderRef builder = ctx->ac.builder;
+ /* PS epilog has one arg per color component; gfx9 merged shader
+ * prologs need to forward 40 SGPRs.
+ */
+ LLVMValueRef initial[AC_MAX_ARGS], out[AC_MAX_ARGS];
+ LLVMTypeRef function_type;
+ unsigned num_first_params;
+ unsigned num_out, initial_num_out;
+ ASSERTED unsigned num_out_sgpr; /* used in debug checks */
+ ASSERTED unsigned initial_num_out_sgpr; /* used in debug checks */
+ unsigned num_sgprs, num_vgprs;
+ unsigned gprs;
+
+ memset(&ctx->args, 0, sizeof(ctx->args));
+
+ for (unsigned i = 0; i < num_parts; ++i) {
+ ac_add_function_attr(ctx->ac.context, parts[i], -1, AC_FUNC_ATTR_ALWAYSINLINE);
+ LLVMSetLinkage(parts[i], LLVMPrivateLinkage);
+ }
+
+ /* The parameters of the wrapper function correspond to those of the
+ * first part in terms of SGPRs and VGPRs, but we use the types of the
+ * main part to get the right types. This is relevant for the
+ * dereferenceable attribute on descriptor table pointers.
+ */
+ num_sgprs = 0;
+ num_vgprs = 0;
+
+ function_type = LLVMGetElementType(LLVMTypeOf(parts[0]));
+ num_first_params = LLVMCountParamTypes(function_type);
+
+ for (unsigned i = 0; i < num_first_params; ++i) {
+ LLVMValueRef param = LLVMGetParam(parts[0], i);
+
+ if (ac_is_sgpr_param(param)) {
+ assert(num_vgprs == 0);
+ num_sgprs += ac_get_type_size(LLVMTypeOf(param)) / 4;
+ } else {
+ num_vgprs += ac_get_type_size(LLVMTypeOf(param)) / 4;
+ }
+ }
+
+ gprs = 0;
+ while (gprs < num_sgprs + num_vgprs) {
+ LLVMValueRef param = LLVMGetParam(parts[main_part], ctx->args.arg_count);
+ LLVMTypeRef type = LLVMTypeOf(param);
+ unsigned size = ac_get_type_size(type) / 4;
+
+ /* This is going to get casted anyways, so we don't have to
+ * have the exact same type. But we do have to preserve the
+ * pointer-ness so that LLVM knows about it.
+ */
+ enum ac_arg_type arg_type = AC_ARG_INT;
+ if (LLVMGetTypeKind(type) == LLVMPointerTypeKind) {
+ type = LLVMGetElementType(type);
+
+ if (LLVMGetTypeKind(type) == LLVMVectorTypeKind) {
+ if (LLVMGetVectorSize(type) == 4)
+ arg_type = AC_ARG_CONST_DESC_PTR;
+ else if (LLVMGetVectorSize(type) == 8)
+ arg_type = AC_ARG_CONST_IMAGE_PTR;
+ else
+ assert(0);
+ } else if (type == ctx->ac.f32) {
+ arg_type = AC_ARG_CONST_FLOAT_PTR;
+ } else {
+ assert(0);
+ }
+ }
+
+ ac_add_arg(&ctx->args, gprs < num_sgprs ? AC_ARG_SGPR : AC_ARG_VGPR, size, arg_type, NULL);
+
+ assert(ac_is_sgpr_param(param) == (gprs < num_sgprs));
+ assert(gprs + size <= num_sgprs + num_vgprs &&
+ (gprs >= num_sgprs || gprs + size <= num_sgprs));
+
+ gprs += size;
+ }
+
+ /* Prepare the return type. */
+ unsigned num_returns = 0;
+ LLVMTypeRef returns[AC_MAX_ARGS], last_func_type, return_type;
+
+ last_func_type = LLVMGetElementType(LLVMTypeOf(parts[num_parts - 1]));
+ return_type = LLVMGetReturnType(last_func_type);
+
+ switch (LLVMGetTypeKind(return_type)) {
+ case LLVMStructTypeKind:
+ num_returns = LLVMCountStructElementTypes(return_type);
+ assert(num_returns <= ARRAY_SIZE(returns));
+ LLVMGetStructElementTypes(return_type, returns);
+ break;
+ case LLVMVoidTypeKind:
+ break;
+ default:
+ unreachable("unexpected type");
+ }
+
+ si_llvm_create_func(ctx, "wrapper", returns, num_returns,
+ si_get_max_workgroup_size(ctx->shader));
+
+ if (si_is_merged_shader(ctx->shader))
+ ac_init_exec_full_mask(&ctx->ac);
+
+ /* Record the arguments of the function as if they were an output of
+ * a previous part.
+ */
+ num_out = 0;
+ num_out_sgpr = 0;
+
+ for (unsigned i = 0; i < ctx->args.arg_count; ++i) {
+ LLVMValueRef param = LLVMGetParam(ctx->main_fn, i);
+ LLVMTypeRef param_type = LLVMTypeOf(param);
+ LLVMTypeRef out_type = ctx->args.args[i].file == AC_ARG_SGPR ? ctx->ac.i32 : ctx->ac.f32;
+ unsigned size = ac_get_type_size(param_type) / 4;
+
+ if (size == 1) {
+ if (LLVMGetTypeKind(param_type) == LLVMPointerTypeKind) {
+ param = LLVMBuildPtrToInt(builder, param, ctx->ac.i32, "");
+ param_type = ctx->ac.i32;
+ }
+
+ if (param_type != out_type)
+ param = LLVMBuildBitCast(builder, param, out_type, "");
+ out[num_out++] = param;
+ } else {
+ LLVMTypeRef vector_type = LLVMVectorType(out_type, size);
+
+ if (LLVMGetTypeKind(param_type) == LLVMPointerTypeKind) {
+ param = LLVMBuildPtrToInt(builder, param, ctx->ac.i64, "");
+ param_type = ctx->ac.i64;
+ }
+
+ if (param_type != vector_type)
+ param = LLVMBuildBitCast(builder, param, vector_type, "");
+
+ for (unsigned j = 0; j < size; ++j)
+ out[num_out++] =
+ LLVMBuildExtractElement(builder, param, LLVMConstInt(ctx->ac.i32, j, 0), "");
+ }
+
+ if (ctx->args.args[i].file == AC_ARG_SGPR)
+ num_out_sgpr = num_out;
+ }
+
+ memcpy(initial, out, sizeof(out));
+ initial_num_out = num_out;
+ initial_num_out_sgpr = num_out_sgpr;
+
+ /* Now chain the parts. */
+ LLVMValueRef ret = NULL;
+ for (unsigned part = 0; part < num_parts; ++part) {
+ LLVMValueRef in[AC_MAX_ARGS];
+ LLVMTypeRef ret_type;
+ unsigned out_idx = 0;
+ unsigned num_params = LLVMCountParams(parts[part]);
+
+ /* Merged shaders are executed conditionally depending
+ * on the number of enabled threads passed in the input SGPRs. */
+ if (si_is_multi_part_shader(ctx->shader) && part == 0) {
+ LLVMValueRef ena, count = initial[3];
+
+ count = LLVMBuildAnd(builder, count, LLVMConstInt(ctx->ac.i32, 0x7f, 0), "");
+ ena = LLVMBuildICmp(builder, LLVMIntULT, ac_get_thread_id(&ctx->ac), count, "");
+ ac_build_ifcc(&ctx->ac, ena, 6506);
+ }
+
+ /* Derive arguments for the next part from outputs of the
+ * previous one.
+ */
+ for (unsigned param_idx = 0; param_idx < num_params; ++param_idx) {
+ LLVMValueRef param;
+ LLVMTypeRef param_type;
+ bool is_sgpr;
+ unsigned param_size;
+ LLVMValueRef arg = NULL;
+
+ param = LLVMGetParam(parts[part], param_idx);
+ param_type = LLVMTypeOf(param);
+ param_size = ac_get_type_size(param_type) / 4;
+ is_sgpr = ac_is_sgpr_param(param);
+
+ if (is_sgpr) {
+ ac_add_function_attr(ctx->ac.context, parts[part], param_idx + 1, AC_FUNC_ATTR_INREG);
+ } else if (out_idx < num_out_sgpr) {
+ /* Skip returned SGPRs the current part doesn't
+ * declare on the input. */
+ out_idx = num_out_sgpr;
+ }
+
+ assert(out_idx + param_size <= (is_sgpr ? num_out_sgpr : num_out));
+
+ if (param_size == 1)
+ arg = out[out_idx];
+ else
+ arg = ac_build_gather_values(&ctx->ac, &out[out_idx], param_size);
+
+ if (LLVMTypeOf(arg) != param_type) {
+ if (LLVMGetTypeKind(param_type) == LLVMPointerTypeKind) {
+ if (LLVMGetPointerAddressSpace(param_type) == AC_ADDR_SPACE_CONST_32BIT) {
+ arg = LLVMBuildBitCast(builder, arg, ctx->ac.i32, "");
+ arg = LLVMBuildIntToPtr(builder, arg, param_type, "");
+ } else {
+ arg = LLVMBuildBitCast(builder, arg, ctx->ac.i64, "");
+ arg = LLVMBuildIntToPtr(builder, arg, param_type, "");
+ }
+ } else {
+ arg = LLVMBuildBitCast(builder, arg, param_type, "");
+ }
+ }
+
+ in[param_idx] = arg;
+ out_idx += param_size;
+ }
+
+ ret = ac_build_call(&ctx->ac, parts[part], in, num_params);
+
+ if (si_is_multi_part_shader(ctx->shader) && part + 1 == next_shader_first_part) {
+ ac_build_endif(&ctx->ac, 6506);
+
+ /* The second half of the merged shader should use
+ * the inputs from the toplevel (wrapper) function,
+ * not the return value from the last call.
+ *
+ * That's because the last call was executed condi-
+ * tionally, so we can't consume it in the main
+ * block.
+ */
+ memcpy(out, initial, sizeof(initial));
+ num_out = initial_num_out;
+ num_out_sgpr = initial_num_out_sgpr;
+ continue;
+ }
+
+ /* Extract the returned GPRs. */
+ ret_type = LLVMTypeOf(ret);
+ num_out = 0;
+ num_out_sgpr = 0;
+
+ if (LLVMGetTypeKind(ret_type) != LLVMVoidTypeKind) {
+ assert(LLVMGetTypeKind(ret_type) == LLVMStructTypeKind);
+
+ unsigned ret_size = LLVMCountStructElementTypes(ret_type);
+
+ for (unsigned i = 0; i < ret_size; ++i) {
+ LLVMValueRef val = LLVMBuildExtractValue(builder, ret, i, "");
+
+ assert(num_out < ARRAY_SIZE(out));
+ out[num_out++] = val;
+
+ if (LLVMTypeOf(val) == ctx->ac.i32) {
+ assert(num_out_sgpr + 1 == num_out);
+ num_out_sgpr = num_out;
+ }
+ }
+ }
+ }
+
+ /* Return the value from the last part. */
+ if (LLVMGetTypeKind(LLVMTypeOf(ret)) == LLVMVoidTypeKind)
+ LLVMBuildRetVoid(builder);
+ else
+ LLVMBuildRet(builder, ret);
}
projects / mesa.git / blobdiff