LLVMValueRef *ssa_defs;
+ LLVMValueRef scratch;
+
struct hash_table *defs;
struct hash_table *phis;
struct hash_table *vars;
ac_to_float(ctx, src0),
};
- MAYBE_UNUSED const int length = snprintf(name, sizeof(name), "%s.f%d", intrin,
+ ASSERTED const int length = snprintf(name, sizeof(name), "%s.f%d", intrin,
ac_get_elem_bits(ctx, result_type));
assert(length < sizeof(name));
return ac_build_intrinsic(ctx, name, result_type, params, 1, AC_FUNC_ATTR_READNONE);
ac_to_float(ctx, src1),
};
- MAYBE_UNUSED const int length = snprintf(name, sizeof(name), "%s.f%d", intrin,
+ ASSERTED const int length = snprintf(name, sizeof(name), "%s.f%d", intrin,
ac_get_elem_bits(ctx, result_type));
assert(length < sizeof(name));
return ac_build_intrinsic(ctx, name, result_type, params, 2, AC_FUNC_ATTR_READNONE);
ac_to_float(ctx, src2),
};
- MAYBE_UNUSED const int length = snprintf(name, sizeof(name), "%s.f%d", intrin,
+ ASSERTED const int length = snprintf(name, sizeof(name), "%s.f%d", intrin,
ac_get_elem_bits(ctx, result_type));
assert(length < sizeof(name));
return ac_build_intrinsic(ctx, name, result_type, params, 3, AC_FUNC_ATTR_READNONE);
}
}
+static LLVMValueRef emit_ssbo_comp_swap_64(struct ac_nir_context *ctx,
+ LLVMValueRef descriptor,
+ LLVMValueRef offset,
+ LLVMValueRef compare,
+ LLVMValueRef exchange)
+{
+ LLVMBasicBlockRef start_block = NULL, then_block = NULL;
+ if (ctx->abi->robust_buffer_access) {
+ LLVMValueRef size = ac_llvm_extract_elem(&ctx->ac, descriptor, 2);
+
+ LLVMValueRef cond = LLVMBuildICmp(ctx->ac.builder, LLVMIntULT, offset, size, "");
+ start_block = LLVMGetInsertBlock(ctx->ac.builder);
+
+ ac_build_ifcc(&ctx->ac, cond, -1);
+
+ then_block = LLVMGetInsertBlock(ctx->ac.builder);
+ }
+
+ LLVMValueRef ptr_parts[2] = {
+ ac_llvm_extract_elem(&ctx->ac, descriptor, 0),
+ LLVMBuildAnd(ctx->ac.builder,
+ ac_llvm_extract_elem(&ctx->ac, descriptor, 1),
+ LLVMConstInt(ctx->ac.i32, 65535, 0), "")
+ };
+
+ ptr_parts[1] = LLVMBuildTrunc(ctx->ac.builder, ptr_parts[1], ctx->ac.i16, "");
+ ptr_parts[1] = LLVMBuildSExt(ctx->ac.builder, ptr_parts[1], ctx->ac.i32, "");
+
+ offset = LLVMBuildZExt(ctx->ac.builder, offset, ctx->ac.i64, "");
+
+ LLVMValueRef ptr = ac_build_gather_values(&ctx->ac, ptr_parts, 2);
+ ptr = LLVMBuildBitCast(ctx->ac.builder, ptr, ctx->ac.i64, "");
+ ptr = LLVMBuildAdd(ctx->ac.builder, ptr, offset, "");
+ ptr = LLVMBuildIntToPtr(ctx->ac.builder, ptr, LLVMPointerType(ctx->ac.i64, AC_ADDR_SPACE_GLOBAL), "");
+
+ LLVMValueRef result = ac_build_atomic_cmp_xchg(&ctx->ac, ptr, compare, exchange, "singlethread-one-as");
+ result = LLVMBuildExtractValue(ctx->ac.builder, result, 0, "");
+
+ if (ctx->abi->robust_buffer_access) {
+ ac_build_endif(&ctx->ac, -1);
+
+ LLVMBasicBlockRef incoming_blocks[2] = {
+ start_block,
+ then_block,
+ };
+
+ LLVMValueRef incoming_values[2] = {
+ LLVMConstInt(ctx->ac.i64, 0, 0),
+ result,
+ };
+ LLVMValueRef ret = LLVMBuildPhi(ctx->ac.builder, ctx->ac.i64, "");
+ LLVMAddIncoming(ret, incoming_values, incoming_blocks, 2);
+ return ret;
+ } else {
+ return result;
+ }
+}
+
static LLVMValueRef visit_atomic_ssbo(struct ac_nir_context *ctx,
const nir_intrinsic_instr *instr)
{
LLVMTypeRef return_type = LLVMTypeOf(get_src(ctx, instr->src[2]));
const char *op;
char name[64], type[8];
- LLVMValueRef params[6];
+ LLVMValueRef params[6], descriptor;
int arg_count = 0;
switch (instr->intrinsic) {
abort();
}
+ descriptor = ctx->abi->load_ssbo(ctx->abi,
+ get_src(ctx, instr->src[0]),
+ true);
+
+ if (instr->intrinsic == nir_intrinsic_ssbo_atomic_comp_swap &&
+ return_type == ctx->ac.i64) {
+ return emit_ssbo_comp_swap_64(ctx, descriptor,
+ get_src(ctx, instr->src[1]),
+ get_src(ctx, instr->src[2]),
+ get_src(ctx, instr->src[3]));
+ }
if (instr->intrinsic == nir_intrinsic_ssbo_atomic_comp_swap) {
params[arg_count++] = ac_llvm_extract_elem(&ctx->ac, get_src(ctx, instr->src[3]), 0);
}
params[arg_count++] = ac_llvm_extract_elem(&ctx->ac, get_src(ctx, instr->src[2]), 0);
- params[arg_count++] = ctx->abi->load_ssbo(ctx->abi,
- get_src(ctx, instr->src[0]),
- true);
+ params[arg_count++] = descriptor;
if (HAVE_LLVM >= 0x900) {
/* XXX: The new raw/struct atomic intrinsics are buggy with
LLVMValueRef sample_index = ac_llvm_extract_elem(&ctx->ac, get_src(ctx, instr->src[2]), 0);
int count;
- MAYBE_UNUSED bool add_frag_pos = (dim == GLSL_SAMPLER_DIM_SUBPASS ||
+ ASSERTED bool add_frag_pos = (dim == GLSL_SAMPLER_DIM_SUBPASS ||
dim == GLSL_SAMPLER_DIM_SUBPASS_MS);
bool is_ms = (dim == GLSL_SAMPLER_DIM_MS ||
dim == GLSL_SAMPLER_DIM_SUBPASS_MS);
const char *atomic_name;
char intrinsic_name[64];
enum ac_atomic_op atomic_subop;
- MAYBE_UNUSED int length;
+ ASSERTED int length;
enum glsl_sampler_dim dim;
bool is_unsigned = false;
}
case nir_intrinsic_load_interpolated_input: {
/* We assume any indirect loads have been lowered away */
- MAYBE_UNUSED nir_const_value *offset = nir_src_as_const_value(instr->src[1]);
+ ASSERTED nir_const_value *offset = nir_src_as_const_value(instr->src[1]);
assert(offset);
assert(offset[0].i32 == 0);
}
case nir_intrinsic_load_input: {
/* We only lower inputs for fragment shaders ATM */
- MAYBE_UNUSED nir_const_value *offset = nir_src_as_const_value(instr->src[0]);
+ ASSERTED nir_const_value *offset = nir_src_as_const_value(instr->src[0]);
assert(offset);
assert(offset[0].i32 == 0);
case nir_intrinsic_mbcnt_amd:
result = ac_build_mbcnt(&ctx->ac, get_src(ctx, instr->src[0]));
break;
+ case nir_intrinsic_load_scratch: {
+ LLVMValueRef offset = get_src(ctx, instr->src[0]);
+ LLVMValueRef ptr = ac_build_gep0(&ctx->ac, ctx->scratch,
+ offset);
+ LLVMTypeRef comp_type =
+ LLVMIntTypeInContext(ctx->ac.context, instr->dest.ssa.bit_size);
+ LLVMTypeRef vec_type =
+ instr->dest.ssa.num_components == 1 ? comp_type :
+ LLVMVectorType(comp_type, instr->dest.ssa.num_components);
+ unsigned addr_space = LLVMGetPointerAddressSpace(LLVMTypeOf(ptr));
+ ptr = LLVMBuildBitCast(ctx->ac.builder, ptr,
+ LLVMPointerType(vec_type, addr_space), "");
+ result = LLVMBuildLoad(ctx->ac.builder, ptr, "");
+ break;
+ }
+ case nir_intrinsic_store_scratch: {
+ LLVMValueRef offset = get_src(ctx, instr->src[1]);
+ LLVMValueRef ptr = ac_build_gep0(&ctx->ac, ctx->scratch,
+ offset);
+ LLVMTypeRef comp_type =
+ LLVMIntTypeInContext(ctx->ac.context, instr->src[0].ssa->bit_size);
+ LLVMTypeRef vec_type =
+ instr->src[0].ssa->num_components == 1 ? comp_type :
+ LLVMVectorType(comp_type, instr->src[0].ssa->num_components);
+ unsigned addr_space = LLVMGetPointerAddressSpace(LLVMTypeOf(ptr));
+ ptr = LLVMBuildBitCast(ctx->ac.builder, ptr,
+ LLVMPointerType(vec_type, addr_space), "");
+ LLVMBuildStore(ctx->ac.builder, get_src(ctx, instr->src[0]), ptr);
+ break;
+ }
default:
fprintf(stderr, "Unknown intrinsic: ");
nir_print_instr(&instr->instr, stderr);
static void visit_block(struct ac_nir_context *ctx, nir_block *block)
{
- LLVMBasicBlockRef llvm_block = LLVMGetInsertBlock(ctx->ac.builder);
nir_foreach_instr(instr, block)
{
switch (instr->type) {
}
}
- _mesa_hash_table_insert(ctx->defs, block, llvm_block);
+ _mesa_hash_table_insert(ctx->defs, block,
+ LLVMGetInsertBlock(ctx->ac.builder));
}
static void visit_if(struct ac_nir_context *ctx, nir_if *if_stmt)
}
}
+static void
+setup_scratch(struct ac_nir_context *ctx,
+ struct nir_shader *shader)
+{
+ if (shader->scratch_size == 0)
+ return;
+
+ ctx->scratch = ac_build_alloca_undef(&ctx->ac,
+ LLVMArrayType(ctx->ac.i8, shader->scratch_size),
+ "scratch");
+}
+
static void
setup_shared(struct ac_nir_context *ctx,
struct nir_shader *nir)
ctx.ssa_defs = calloc(func->impl->ssa_alloc, sizeof(LLVMValueRef));
setup_locals(&ctx, func);
+ setup_scratch(&ctx, nir);
if (gl_shader_stage_is_compute(nir->info.stage))
setup_shared(&ctx, nir);
void
ac_lower_indirect_derefs(struct nir_shader *nir, enum chip_class chip_class)
{
+ /* Lower large variables to scratch first so that we won't bloat the
+ * shader by generating large if ladders for them. We later lower
+ * scratch to alloca's, assuming LLVM won't generate VGPR indexing.
+ */
+ NIR_PASS_V(nir, nir_lower_vars_to_scratch,
+ nir_var_function_temp,
+ 256,
+ glsl_get_natural_size_align_bytes);
+
/* While it would be nice not to have this flag, we are constrained
* by the reality that LLVM 9.0 has buggy VGPR indexing on GFX9.
*/
projects / mesa.git / blobdiff