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Copy pathspirv_ir_builder.cpp
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spirv_ir_builder.cpp
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#include "taichi/codegen/spirv/spirv_ir_builder.h"
#include "taichi/backends/dx/dx_device.h"
namespace taichi {
namespace lang {
namespace spirv {
using cap = DeviceCapability;
void IRBuilder::init_header() {
TI_ASSERT(header_.size() == 0U);
header_.push_back(spv::MagicNumber);
header_.push_back(device_->get_cap(cap::spirv_version));
TI_TRACE("SPIR-V Version {}", device_->get_cap(cap::spirv_version));
// generator: set to 0, unknown
header_.push_back(0U);
// Bound: set during Finalize
header_.push_back(0U);
// Schema: reserved
header_.push_back(0U);
// capability
ib_.begin(spv::OpCapability).add(spv::CapabilityShader).commit(&header_);
if (device_->get_cap(cap::spirv_has_atomic_float64_add)) {
ib_.begin(spv::OpCapability)
.add(spv::CapabilityAtomicFloat64AddEXT)
.commit(&header_);
}
if (device_->get_cap(cap::spirv_has_atomic_float_add)) {
ib_.begin(spv::OpCapability)
.add(spv::CapabilityAtomicFloat32AddEXT)
.commit(&header_);
}
if (device_->get_cap(cap::spirv_has_atomic_float_minmax)) {
ib_.begin(spv::OpCapability)
.add(spv::CapabilityAtomicFloat32MinMaxEXT)
.commit(&header_);
}
if (device_->get_cap(cap::spirv_has_variable_ptr)) {
/*
ib_.begin(spv::OpCapability)
.add(spv::CapabilityVariablePointers)
.commit(&header_);
ib_.begin(spv::OpCapability)
.add(spv::CapabilityVariablePointersStorageBuffer)
.commit(&header_);
*/
}
if (device_->get_cap(cap::spirv_has_int8)) {
ib_.begin(spv::OpCapability).add(spv::CapabilityInt8).commit(&header_);
}
if (device_->get_cap(cap::spirv_has_int16)) {
ib_.begin(spv::OpCapability).add(spv::CapabilityInt16).commit(&header_);
}
if (device_->get_cap(cap::spirv_has_int64)) {
ib_.begin(spv::OpCapability).add(spv::CapabilityInt64).commit(&header_);
}
if (device_->get_cap(cap::spirv_has_float16)) {
ib_.begin(spv::OpCapability).add(spv::CapabilityFloat16).commit(&header_);
}
if (device_->get_cap(cap::spirv_has_float64)) {
ib_.begin(spv::OpCapability).add(spv::CapabilityFloat64).commit(&header_);
}
if (device_->get_cap(cap::spirv_has_physical_storage_buffer)) {
ib_.begin(spv::OpCapability)
.add(spv::CapabilityPhysicalStorageBufferAddresses)
.commit(&header_);
}
ib_.begin(spv::OpExtension)
.add("SPV_KHR_storage_buffer_storage_class")
.commit(&header_);
if (device_->get_cap(cap::spirv_has_variable_ptr)) {
ib_.begin(spv::OpExtension)
.add("SPV_KHR_variable_pointers")
.commit(&header_);
}
if (device_->get_cap(cap::spirv_has_atomic_float_add)) {
ib_.begin(spv::OpExtension)
.add("SPV_EXT_shader_atomic_float_add")
.commit(&header_);
}
if (device_->get_cap(cap::spirv_has_atomic_float_minmax)) {
ib_.begin(spv::OpExtension)
.add("SPV_EXT_shader_atomic_float_min_max")
.commit(&header_);
}
if (device_->get_cap(cap::spirv_has_physical_storage_buffer)) {
ib_.begin(spv::OpExtension)
.add("SPV_KHR_physical_storage_buffer")
.commit(&header_);
// memory model
ib_.begin(spv::OpMemoryModel)
.add_seq(spv::AddressingModelPhysicalStorageBuffer64,
spv::MemoryModelGLSL450)
.commit(&entry_);
} else {
ib_.begin(spv::OpMemoryModel)
.add_seq(spv::AddressingModelLogical, spv::MemoryModelGLSL450)
.commit(&entry_);
}
this->init_pre_defs();
}
std::vector<uint32_t> IRBuilder::finalize() {
std::vector<uint32_t> data;
// set bound
const int bound_loc = 3;
header_[bound_loc] = id_counter_;
data.insert(data.end(), header_.begin(), header_.end());
data.insert(data.end(), entry_.begin(), entry_.end());
data.insert(data.end(), exec_mode_.begin(), exec_mode_.end());
data.insert(data.end(), debug_.begin(), debug_.end());
data.insert(data.end(), decorate_.begin(), decorate_.end());
data.insert(data.end(), global_.begin(), global_.end());
data.insert(data.end(), func_header_.begin(), func_header_.end());
data.insert(data.end(), function_.begin(), function_.end());
return data;
}
void IRBuilder::init_pre_defs() {
ext_glsl450_ = ext_inst_import("GLSL.std.450");
t_bool_ = declare_primitive_type(get_data_type<bool>());
if (device_->get_cap(cap::spirv_has_int8)) {
t_int8_ = declare_primitive_type(get_data_type<int8>());
t_uint8_ = declare_primitive_type(get_data_type<uint8>());
}
if (device_->get_cap(cap::spirv_has_int16)) {
t_int16_ = declare_primitive_type(get_data_type<int16>());
t_uint16_ = declare_primitive_type(get_data_type<uint16>());
}
t_int32_ = declare_primitive_type(get_data_type<int32>());
t_uint32_ = declare_primitive_type(get_data_type<uint32>());
if (device_->get_cap(cap::spirv_has_int64)) {
t_int64_ = declare_primitive_type(get_data_type<int64>());
t_uint64_ = declare_primitive_type(get_data_type<uint64>());
}
t_fp32_ = declare_primitive_type(get_data_type<float32>());
if (device_->get_cap(cap::spirv_has_float16)) {
t_fp16_ = declare_primitive_type(PrimitiveType::f16);
}
if (device_->get_cap(cap::spirv_has_float64)) {
t_fp64_ = declare_primitive_type(get_data_type<float64>());
}
// declare void, and void functions
t_void_.id = id_counter_++;
ib_.begin(spv::OpTypeVoid).add(t_void_).commit(&global_);
t_void_func_.id = id_counter_++;
ib_.begin(spv::OpTypeFunction)
.add_seq(t_void_func_, t_void_)
.commit(&global_);
// compute shader related types
t_v3_uint_.id = id_counter_++;
ib_.begin(spv::OpTypeVector)
.add(t_v3_uint_)
.add_seq(t_uint32_, 3)
.commit(&global_);
// pre-defined constants
const_i32_zero_ = int_immediate_number(t_int32_, 0);
const_i32_one_ = int_immediate_number(t_int32_, 1);
}
PhiValue IRBuilder::make_phi(const SType &out_type, uint32_t num_incoming) {
Value val = new_value(out_type, ValueKind::kNormal);
ib_.begin(spv::OpPhi).add_seq(out_type, val);
for (uint32_t i = 0; i < 2 * num_incoming; ++i) {
ib_.add(0);
}
PhiValue phi;
phi.id = val.id;
phi.stype = out_type;
phi.flag = ValueKind::kNormal;
phi.instr = ib_.commit(&function_);
return phi;
}
Value IRBuilder::int_immediate_number(const SType &dtype,
int64_t value,
bool cache) {
return get_const(dtype, reinterpret_cast<uint64_t *>(&value), cache);
}
Value IRBuilder::uint_immediate_number(const SType &dtype,
uint64_t value,
bool cache) {
return get_const(dtype, &value, cache);
}
Value IRBuilder::float_immediate_number(const SType &dtype,
double value,
bool cache) {
if (data_type_bits(dtype.dt) == 64) {
return get_const(dtype, reinterpret_cast<uint64_t *>(&value), cache);
} else if (data_type_bits(dtype.dt) == 32) {
float fvalue = static_cast<float>(value);
uint32_t *ptr = reinterpret_cast<uint32_t *>(&fvalue);
uint64_t data = ptr[0];
return get_const(dtype, &data, cache);
} else if (data_type_bits(dtype.dt) == 16) {
float fvalue = static_cast<float>(value);
uint16_t *ptr = reinterpret_cast<uint16_t *>(&fvalue);
uint64_t data = ptr[0];
return get_const(dtype, &data, cache);
} else {
TI_ERROR("Type {} not supported.", dtype.dt->to_string());
}
}
SType IRBuilder::get_null_type() {
SType res;
res.id = id_counter_++;
return res;
}
SType IRBuilder::get_primitive_type(const DataType &dt) const {
if (dt->is_primitive(PrimitiveTypeID::u1)) {
return t_bool_;
} else if (dt->is_primitive(PrimitiveTypeID::f16)) {
if (!device_->get_cap(cap::spirv_has_float16))
TI_ERROR("Type {} not supported.", dt->to_string());
return t_fp16_;
} else if (dt->is_primitive(PrimitiveTypeID::f32)) {
return t_fp32_;
} else if (dt->is_primitive(PrimitiveTypeID::f64)) {
if (!device_->get_cap(cap::spirv_has_float64))
TI_ERROR("Type {} not supported.", dt->to_string());
return t_fp64_;
} else if (dt->is_primitive(PrimitiveTypeID::i8)) {
if (!device_->get_cap(cap::spirv_has_int8))
TI_ERROR("Type {} not supported.", dt->to_string());
return t_int8_;
} else if (dt->is_primitive(PrimitiveTypeID::i16)) {
if (!device_->get_cap(cap::spirv_has_int16))
TI_ERROR("Type {} not supported.", dt->to_string());
return t_int16_;
} else if (dt->is_primitive(PrimitiveTypeID::i32)) {
return t_int32_;
} else if (dt->is_primitive(PrimitiveTypeID::i64)) {
if (!device_->get_cap(cap::spirv_has_int64))
TI_ERROR("Type {} not supported.", dt->to_string());
return t_int64_;
} else if (dt->is_primitive(PrimitiveTypeID::u8)) {
if (!device_->get_cap(cap::spirv_has_int8))
TI_ERROR("Type {} not supported.", dt->to_string());
return t_uint8_;
} else if (dt->is_primitive(PrimitiveTypeID::u16)) {
if (!device_->get_cap(cap::spirv_has_int16))
TI_ERROR("Type {} not supported.", dt->to_string());
return t_uint16_;
} else if (dt->is_primitive(PrimitiveTypeID::u32)) {
return t_uint32_;
} else if (dt->is_primitive(PrimitiveTypeID::u64)) {
if (!device_->get_cap(cap::spirv_has_int64))
TI_ERROR("Type {} not supported.", dt->to_string());
return t_uint64_;
} else {
TI_ERROR("Type {} not supported.", dt->to_string());
}
}
size_t IRBuilder::get_primitive_type_size(const DataType &dt) const {
if (dt == PrimitiveType::i64 || dt == PrimitiveType::u64 ||
dt == PrimitiveType::f64) {
return 8;
} else if (dt == PrimitiveType::i32 || dt == PrimitiveType::u32 ||
dt == PrimitiveType::f32) {
return 4;
} else if (dt == PrimitiveType::i16 || dt == PrimitiveType::u16 ||
dt == PrimitiveType::f16) {
return 2;
} else {
return 1;
}
}
SType IRBuilder::get_primitive_uint_type(const DataType &dt) const {
if (dt == PrimitiveType::i64 || dt == PrimitiveType::u64 ||
dt == PrimitiveType::f64) {
return t_uint64_;
} else if (dt == PrimitiveType::i32 || dt == PrimitiveType::u32 ||
dt == PrimitiveType::f32) {
return t_uint32_;
} else if (dt == PrimitiveType::i16 || dt == PrimitiveType::u16 ||
dt == PrimitiveType::f16) {
return t_uint16_;
} else {
return t_uint8_;
}
}
DataType IRBuilder::get_taichi_uint_type(const DataType &dt) const {
if (dt == PrimitiveType::i64 || dt == PrimitiveType::u64 ||
dt == PrimitiveType::f64) {
return PrimitiveType::u64;
} else if (dt == PrimitiveType::i32 || dt == PrimitiveType::u32 ||
dt == PrimitiveType::f32) {
return PrimitiveType::u32;
} else if (dt == PrimitiveType::i16 || dt == PrimitiveType::u16 ||
dt == PrimitiveType::f16) {
return PrimitiveType::u16;
} else {
return PrimitiveType::u8;
}
}
SType IRBuilder::get_pointer_type(const SType &value_type,
spv::StorageClass storage_class) {
auto key = std::make_pair(value_type.id, storage_class);
auto it = pointer_type_tbl_.find(key);
if (it != pointer_type_tbl_.end()) {
return it->second;
}
SType t;
t.id = id_counter_++;
t.flag = TypeKind::kPtr;
t.element_type_id = value_type.id;
t.storage_class = storage_class;
ib_.begin(spv::OpTypePointer)
.add_seq(t, storage_class, value_type)
.commit(&global_);
pointer_type_tbl_[key] = t;
return t;
}
SType IRBuilder::get_storage_pointer_type(const SType &value_type) {
spv::StorageClass storage_class;
if (device_->get_cap(cap::spirv_version) < 0x10300) {
storage_class = spv::StorageClassUniform;
} else {
storage_class = spv::StorageClassStorageBuffer;
}
return get_pointer_type(value_type, storage_class);
}
SType IRBuilder::get_array_type(const SType &value_type, uint32_t num_elems) {
SType arr_type;
arr_type.id = id_counter_++;
arr_type.flag = TypeKind::kPtr;
arr_type.element_type_id = value_type.id;
if (num_elems != 0) {
Value length = uint_immediate_number(
get_primitive_type(get_data_type<uint32>()), num_elems);
ib_.begin(spv::OpTypeArray)
.add_seq(arr_type, value_type, length)
.commit(&global_);
} else {
ib_.begin(spv::OpTypeRuntimeArray)
.add_seq(arr_type, value_type)
.commit(&global_);
}
uint32_t nbytes;
if (value_type.flag == TypeKind::kPrimitive) {
const auto nbits = data_type_bits(value_type.dt);
nbytes = static_cast<uint32_t>(nbits) / 8;
} else if (value_type.flag == TypeKind::kSNodeStruct) {
nbytes = value_type.snode_desc.container_stride;
} else {
TI_ERROR("buffer type must be primitive or snode struct");
}
if (nbytes == 0) {
if (value_type.flag == TypeKind::kPrimitive) {
TI_WARN("Invalid primitive bit size");
} else {
TI_WARN("Invalid container stride");
}
}
// decorate the array type
this->decorate(spv::OpDecorate, arr_type, spv::DecorationArrayStride, nbytes);
return arr_type;
}
SType IRBuilder::get_struct_array_type(const SType &value_type,
uint32_t num_elems) {
SType arr_type = get_array_type(value_type, num_elems);
// declare struct of array
SType struct_type;
struct_type.id = id_counter_++;
struct_type.flag = TypeKind::kStruct;
struct_type.element_type_id = value_type.id;
ib_.begin(spv::OpTypeStruct).add_seq(struct_type, arr_type).commit(&global_);
// decorate the array type.
ib_.begin(spv::OpMemberDecorate)
.add_seq(struct_type, 0, spv::DecorationOffset, 0)
.commit(&decorate_);
if (device_->get_cap(cap::spirv_version) < 0x10300) {
// NOTE: BufferBlock was deprecated in SPIRV 1.3
// use StorageClassStorageBuffer instead.
// runtime array are always decorated as BufferBlock(shader storage buffer)
if (num_elems == 0) {
this->decorate(spv::OpDecorate, struct_type, spv::DecorationBufferBlock);
}
} else {
this->decorate(spv::OpDecorate, struct_type, spv::DecorationBlock);
}
return struct_type;
}
SType IRBuilder::create_struct_type(
std::vector<std::tuple<SType, std::string, size_t>> &components) {
SType struct_type;
struct_type.id = id_counter_++;
struct_type.flag = TypeKind::kStruct;
auto &builder = ib_.begin(spv::OpTypeStruct).add_seq(struct_type);
for (auto &[type, name, offset] : components) {
builder.add_seq(type);
}
builder.commit(&global_);
int i = 0;
for (auto &[type, name, offset] : components) {
this->decorate(spv::OpMemberDecorate, struct_type, i, spv::DecorationOffset,
offset);
this->debug(spv::OpMemberName, struct_type, i, name);
i++;
}
return struct_type;
}
Value IRBuilder::buffer_struct_argument(const SType &struct_type,
uint32_t descriptor_set,
uint32_t binding,
const std::string &name) {
// NOTE: BufferBlock was deprecated in SPIRV 1.3
// use StorageClassStorageBuffer instead.
spv::StorageClass storage_class;
if (device_->get_cap(cap::spirv_version) < 0x10300) {
storage_class = spv::StorageClassUniform;
} else {
storage_class = spv::StorageClassStorageBuffer;
}
this->debug(spv::OpName, struct_type, name + "_t");
if (device_->get_cap(cap::spirv_version) < 0x10300) {
// NOTE: BufferBlock was deprecated in SPIRV 1.3
// use StorageClassStorageBuffer instead.
// runtime array are always decorated as BufferBlock(shader storage buffer)
this->decorate(spv::OpDecorate, struct_type, spv::DecorationBufferBlock);
} else {
this->decorate(spv::OpDecorate, struct_type, spv::DecorationBlock);
}
SType ptr_type = get_pointer_type(struct_type, storage_class);
this->debug(spv::OpName, ptr_type, name + "_ptr");
Value val = new_value(ptr_type, ValueKind::kStructArrayPtr);
ib_.begin(spv::OpVariable)
.add_seq(ptr_type, val, storage_class)
.commit(&global_);
this->debug(spv::OpName, val, name);
this->decorate(spv::OpDecorate, val, spv::DecorationDescriptorSet,
descriptor_set);
this->decorate(spv::OpDecorate, val, spv::DecorationBinding, binding);
return val;
}
Value IRBuilder::uniform_struct_argument(const SType &struct_type,
uint32_t descriptor_set,
uint32_t binding,
const std::string &name) {
// NOTE: BufferBlock was deprecated in SPIRV 1.3
// use StorageClassStorageBuffer instead.
spv::StorageClass storage_class = spv::StorageClassUniform;
this->debug(spv::OpName, struct_type, name + "_t");
this->decorate(spv::OpDecorate, struct_type, spv::DecorationBlock);
SType ptr_type = get_pointer_type(struct_type, storage_class);
this->debug(spv::OpName, ptr_type, name + "_ptr");
Value val = new_value(ptr_type, ValueKind::kStructArrayPtr);
ib_.begin(spv::OpVariable)
.add_seq(ptr_type, val, storage_class)
.commit(&global_);
this->debug(spv::OpName, val, name);
this->decorate(spv::OpDecorate, val, spv::DecorationDescriptorSet,
descriptor_set);
this->decorate(spv::OpDecorate, val, spv::DecorationBinding, binding);
return val;
}
Value IRBuilder::buffer_argument(const SType &value_type,
uint32_t descriptor_set,
uint32_t binding,
const std::string &name) {
// NOTE: BufferBlock was deprecated in SPIRV 1.3
// use StorageClassStorageBuffer instead.
spv::StorageClass storage_class;
if (device_->get_cap(cap::spirv_version) < 0x10300) {
storage_class = spv::StorageClassUniform;
} else {
storage_class = spv::StorageClassStorageBuffer;
}
SType sarr_type = get_struct_array_type(value_type, 0);
auto typed_name = name + "_" + value_type.dt.to_string();
this->debug(spv::OpName, sarr_type, typed_name + "_struct_array");
SType ptr_type = get_pointer_type(sarr_type, storage_class);
this->debug(spv::OpName, sarr_type, typed_name + "_ptr");
Value val = new_value(ptr_type, ValueKind::kStructArrayPtr);
ib_.begin(spv::OpVariable)
.add_seq(ptr_type, val, storage_class)
.commit(&global_);
this->debug(spv::OpName, val, typed_name);
this->decorate(spv::OpDecorate, val, spv::DecorationDescriptorSet,
descriptor_set);
this->decorate(spv::OpDecorate, val, spv::DecorationBinding, binding);
return val;
}
Value IRBuilder::struct_array_access(const SType &res_type,
Value buffer,
Value index) {
TI_ASSERT(buffer.flag == ValueKind::kStructArrayPtr);
TI_ASSERT(res_type.flag == TypeKind::kPrimitive);
spv::StorageClass storage_class;
if (device_->get_cap(cap::spirv_version) < 0x10300) {
storage_class = spv::StorageClassUniform;
} else {
storage_class = spv::StorageClassStorageBuffer;
}
SType ptr_type = this->get_pointer_type(res_type, storage_class);
Value ret = new_value(ptr_type, ValueKind::kVariablePtr);
ib_.begin(spv::OpAccessChain)
.add_seq(ptr_type, ret, buffer, const_i32_zero_, index)
.commit(&function_);
return ret;
}
void IRBuilder::set_work_group_size(const std::array<int, 3> group_size) {
Value size_x =
uint_immediate_number(t_uint32_, static_cast<uint64_t>(group_size[0]));
Value size_y =
uint_immediate_number(t_uint32_, static_cast<uint64_t>(group_size[1]));
Value size_z =
uint_immediate_number(t_uint32_, static_cast<uint64_t>(group_size[2]));
if (gl_work_group_size_.id == 0) {
gl_work_group_size_.id = id_counter_++;
}
ib_.begin(spv::OpConstantComposite)
.add_seq(t_v3_uint_, gl_work_group_size_, size_x, size_y, size_z)
.commit(&global_);
this->decorate(spv::OpDecorate, gl_work_group_size_, spv::DecorationBuiltIn,
spv::BuiltInWorkgroupSize);
}
Value IRBuilder::get_num_work_groups(uint32_t dim_index) {
if (gl_num_work_groups_.id == 0) {
SType ptr_type = this->get_pointer_type(t_v3_uint_, spv::StorageClassInput);
gl_num_work_groups_ = new_value(ptr_type, ValueKind::kVectorPtr);
ib_.begin(spv::OpVariable)
.add_seq(ptr_type, gl_num_work_groups_, spv::StorageClassInput)
.commit(&global_);
this->decorate(spv::OpDecorate, gl_num_work_groups_, spv::DecorationBuiltIn,
spv::BuiltInNumWorkgroups);
}
SType pint_type = this->get_pointer_type(t_uint32_, spv::StorageClassInput);
Value ptr = this->make_value(
spv::OpAccessChain, pint_type, gl_num_work_groups_,
uint_immediate_number(t_uint32_, static_cast<uint64_t>(dim_index)));
return this->make_value(spv::OpLoad, t_uint32_, ptr);
}
Value IRBuilder::get_global_invocation_id(uint32_t dim_index) {
if (gl_global_invocation_id_.id == 0) {
SType ptr_type = this->get_pointer_type(t_v3_uint_, spv::StorageClassInput);
gl_global_invocation_id_ = new_value(ptr_type, ValueKind::kVectorPtr);
ib_.begin(spv::OpVariable)
.add_seq(ptr_type, gl_global_invocation_id_, spv::StorageClassInput)
.commit(&global_);
this->decorate(spv::OpDecorate, gl_global_invocation_id_,
spv::DecorationBuiltIn, spv::BuiltInGlobalInvocationId);
}
SType pint_type = this->get_pointer_type(t_uint32_, spv::StorageClassInput);
Value ptr = this->make_value(
spv::OpAccessChain, pint_type, gl_global_invocation_id_,
uint_immediate_number(t_uint32_, static_cast<uint64_t>(dim_index)));
return this->make_value(spv::OpLoad, t_uint32_, ptr);
}
Value IRBuilder::get_subgroup_invocation_id() {
if (subgroup_local_invocation_id_.id == 0) {
SType ptr_type = this->get_pointer_type(t_uint32_, spv::StorageClassInput);
subgroup_local_invocation_id_ =
new_value(ptr_type, ValueKind::kVariablePtr);
ib_.begin(spv::OpVariable)
.add_seq(ptr_type, subgroup_local_invocation_id_,
spv::StorageClassInput)
.commit(&global_);
this->decorate(spv::OpDecorate, subgroup_local_invocation_id_,
spv::DecorationBuiltIn,
spv::BuiltInSubgroupLocalInvocationId);
global_values.push_back(subgroup_local_invocation_id_);
}
return this->make_value(spv::OpLoad, t_uint32_,
subgroup_local_invocation_id_);
}
Value IRBuilder::get_subgroup_size() {
if (subgroup_size_.id == 0) {
SType ptr_type = this->get_pointer_type(t_uint32_, spv::StorageClassInput);
subgroup_size_ = new_value(ptr_type, ValueKind::kVariablePtr);
ib_.begin(spv::OpVariable)
.add_seq(ptr_type, subgroup_size_, spv::StorageClassInput)
.commit(&global_);
this->decorate(spv::OpDecorate, subgroup_size_, spv::DecorationBuiltIn,
spv::BuiltInSubgroupSize);
global_values.push_back(subgroup_size_);
}
return this->make_value(spv::OpLoad, t_uint32_, subgroup_size_);
}
#define DEFINE_BUILDER_BINARY_USIGN_OP(_OpName, _Op) \
Value IRBuilder::_OpName(Value a, Value b) { \
TI_ASSERT(a.stype.id == b.stype.id); \
if (is_integral(a.stype.dt)) { \
return make_value(spv::OpI##_Op, a.stype, a, b); \
} else { \
TI_ASSERT(is_real(a.stype.dt)); \
return make_value(spv::OpF##_Op, a.stype, a, b); \
} \
}
#define DEFINE_BUILDER_BINARY_SIGN_OP(_OpName, _Op) \
Value IRBuilder::_OpName(Value a, Value b) { \
TI_ASSERT(a.stype.id == b.stype.id); \
if (is_integral(a.stype.dt) && is_signed(a.stype.dt)) { \
return make_value(spv::OpS##_Op, a.stype, a, b); \
} else if (is_integral(a.stype.dt)) { \
return make_value(spv::OpU##_Op, a.stype, a, b); \
} else { \
TI_ASSERT(is_real(a.stype.dt)); \
return make_value(spv::OpF##_Op, a.stype, a, b); \
} \
}
DEFINE_BUILDER_BINARY_USIGN_OP(add, Add);
DEFINE_BUILDER_BINARY_USIGN_OP(sub, Sub);
DEFINE_BUILDER_BINARY_USIGN_OP(mul, Mul);
DEFINE_BUILDER_BINARY_SIGN_OP(div, Div);
Value IRBuilder::mod(Value a, Value b) {
TI_ASSERT(a.stype.id == b.stype.id);
if (is_integral(a.stype.dt) && is_signed(a.stype.dt)) {
// FIXME: figure out why OpSRem does not work
return sub(a, mul(b, div(a, b)));
} else if (is_integral(a.stype.dt)) {
return make_value(spv::OpUMod, a.stype, a, b);
} else {
TI_ASSERT(is_real(a.stype.dt));
return make_value(spv::OpFRem, a.stype, a, b);
}
}
#define DEFINE_BUILDER_CMP_OP(_OpName, _Op) \
Value IRBuilder::_OpName(Value a, Value b) { \
TI_ASSERT(a.stype.id == b.stype.id); \
const auto &bool_type = t_bool_; /* TODO: Only scalar supported now */ \
if (is_integral(a.stype.dt) && is_signed(a.stype.dt)) { \
return make_value(spv::OpS##_Op, bool_type, a, b); \
} else if (is_integral(a.stype.dt)) { \
return make_value(spv::OpU##_Op, bool_type, a, b); \
} else { \
TI_ASSERT(is_real(a.stype.dt)); \
return make_value(spv::OpFOrd##_Op, bool_type, a, b); \
} \
}
DEFINE_BUILDER_CMP_OP(lt, LessThan);
DEFINE_BUILDER_CMP_OP(le, LessThanEqual);
DEFINE_BUILDER_CMP_OP(gt, GreaterThan);
DEFINE_BUILDER_CMP_OP(ge, GreaterThanEqual);
#define DEFINE_BUILDER_CMP_UOP(_OpName, _Op) \
Value IRBuilder::_OpName(Value a, Value b) { \
TI_ASSERT(a.stype.id == b.stype.id); \
const auto &bool_type = t_bool_; /* TODO: Only scalar supported now */ \
if (is_integral(a.stype.dt)) { \
return make_value(spv::OpI##_Op, bool_type, a, b); \
} else { \
TI_ASSERT(is_real(a.stype.dt)); \
return make_value(spv::OpFOrd##_Op, bool_type, a, b); \
} \
}
DEFINE_BUILDER_CMP_UOP(eq, Equal);
DEFINE_BUILDER_CMP_UOP(ne, NotEqual);
Value IRBuilder::select(Value cond, Value a, Value b) {
TI_ASSERT(a.stype.id == b.stype.id);
TI_ASSERT(cond.stype.id == t_bool_.id);
return make_value(spv::OpSelect, a.stype, cond, a, b);
}
Value IRBuilder::cast(const SType &dst_type, Value value) {
TI_ASSERT(value.stype.id > 0U);
if (value.stype.id == dst_type.id)
return value;
const DataType &from = value.stype.dt;
const DataType &to = dst_type.dt;
if (from->is_primitive(PrimitiveTypeID::u1)) { // Bool
if (is_integral(to) && is_signed(to)) { // Bool -> Int
return select(value, int_immediate_number(dst_type, 1),
int_immediate_number(dst_type, 0));
} else if (is_integral(to) && is_unsigned(to)) { // Bool -> UInt
return select(value, uint_immediate_number(dst_type, 1),
uint_immediate_number(dst_type, 0));
} else if (is_real(to)) { // Bool -> Float
return make_value(spv::OpConvertUToF, dst_type,
select(value, uint_immediate_number(t_uint32_, 1),
uint_immediate_number(t_uint32_, 0)));
} else {
TI_ERROR("do not support type cast from {} to {}", from.to_string(),
to.to_string());
return Value();
}
} else if (to->is_primitive(PrimitiveTypeID::u1)) { // Bool
if (is_integral(from) && is_signed(from)) { // Int -> Bool
return ne(value, int_immediate_number(value.stype, 0));
} else if (is_integral(from) && is_unsigned(from)) { // UInt -> Bool
return ne(value, uint_immediate_number(value.stype, 0));
} else {
TI_ERROR("do not support type cast from {} to {}", from.to_string(),
to.to_string());
return Value();
}
} else if (is_integral(from) && is_integral(to)) {
auto ret = value;
if (data_type_bits(from) == data_type_bits(to)) {
// Same width conversion
ret = make_value(spv::OpBitcast, dst_type, ret);
} else {
// Different width
// Step 1. Sign extend / truncate value to width of `to`
// Step 2. Bitcast to signess of `to`
auto get_signed_type = [](DataType dt) -> DataType {
// Create a output signed type with the same width as `dt`
if (data_type_bits(dt) == 8)
return PrimitiveType::i8;
else if (data_type_bits(dt) == 16)
return PrimitiveType::i16;
else if (data_type_bits(dt) == 32)
return PrimitiveType::i32;
else if (data_type_bits(dt) == 64)
return PrimitiveType::i64;
else
return PrimitiveType::unknown;
};
auto get_unsigned_type = [](DataType dt) -> DataType {
// Create a output unsigned type with the same width as `dt`
if (data_type_bits(dt) == 8)
return PrimitiveType::u8;
else if (data_type_bits(dt) == 16)
return PrimitiveType::u16;
else if (data_type_bits(dt) == 32)
return PrimitiveType::u32;
else if (data_type_bits(dt) == 64)
return PrimitiveType::u64;
else
return PrimitiveType::unknown;
};
if (is_signed(from)) {
ret = make_value(spv::OpSConvert,
get_primitive_type(get_signed_type(to)), ret);
} else {
ret = make_value(spv::OpUConvert,
get_primitive_type(get_unsigned_type(to)), ret);
}
ret = make_value(spv::OpBitcast, dst_type, ret);
}
return ret;
} else if (is_real(from) && is_integral(to) &&
is_signed(to)) { // Float -> Int
return make_value(spv::OpConvertFToS, dst_type, value);
} else if (is_real(from) && is_integral(to) &&
is_unsigned(to)) { // Float -> UInt
return make_value(spv::OpConvertFToU, dst_type, value);
} else if (is_integral(from) && is_signed(from) &&
is_real(to)) { // Int -> Float
return make_value(spv::OpConvertSToF, dst_type, value);
} else if (is_integral(from) && is_unsigned(from) &&
is_real(to)) { // UInt -> Float
return make_value(spv::OpConvertUToF, dst_type, value);
} else if (is_real(from) && is_real(to)) { // Float -> Float
return make_value(spv::OpFConvert, dst_type, value);
} else {
TI_ERROR("do not support type cast from {} to {}", from.to_string(),
to.to_string());
return Value();
}
}
Value IRBuilder::alloca_variable(const SType &type) {
SType ptr_type = get_pointer_type(type, spv::StorageClassFunction);
Value ret = new_value(ptr_type, ValueKind::kVariablePtr);
ib_.begin(spv::OpVariable)
.add_seq(ptr_type, ret, spv::StorageClassFunction)
.commit(&func_header_);
return ret;
}
Value IRBuilder::load_variable(Value pointer, const SType &res_type) {
TI_ASSERT(pointer.flag == ValueKind::kVariablePtr ||
pointer.flag == ValueKind::kStructArrayPtr ||
pointer.flag == ValueKind::kPhysicalPtr);
Value ret = new_value(res_type, ValueKind::kNormal);
ib_.begin(spv::OpLoad).add_seq(res_type, ret, pointer).commit(&function_);
return ret;
}
void IRBuilder::store_variable(Value pointer, Value value) {
TI_ASSERT(pointer.flag == ValueKind::kVariablePtr ||
pointer.flag == ValueKind::kPhysicalPtr);
TI_ASSERT(value.stype.id == pointer.stype.element_type_id);
if (pointer.flag == ValueKind::kPhysicalPtr) {
Value alignment = uint_immediate_number(
t_uint32_, get_primitive_type_size(value.stype.dt));
ib_.begin(spv::OpStore)
.add_seq(pointer, value, spv::MemoryAccessAlignedMask, alignment)
.commit(&function_);
} else {
ib_.begin(spv::OpStore).add_seq(pointer, value).commit(&function_);
}
}
void IRBuilder::register_value(std::string name, Value value) {
auto it = value_name_tbl_.find(name);
if (it != value_name_tbl_.end()) {
TI_ERROR("{} is existed.", name);
}
this->debug(
spv::OpName, value,
fmt::format("{}_{}", name, value.stype.dt.to_string())); // Debug info
value_name_tbl_[name] = value;
}
Value IRBuilder::query_value(std::string name) const {
auto it = value_name_tbl_.find(name);
if (it != value_name_tbl_.end()) {
return it->second;
}
TI_ERROR("Value \"{}\" does not yet exist.", name);
}
bool IRBuilder::check_value_existence(const std::string &name) const {
return value_name_tbl_.find(name) != value_name_tbl_.end();
}
Value IRBuilder::float_atomic(AtomicOpType op_type,
Value addr_ptr,
Value data) {
auto atomic_func_ = [&](std::function<Value(Value, Value)> atomic_op) {
Value ret_val_int = alloca_variable(t_uint32_);
// do-while
Label head = new_label();
Label body = new_label();
Label branch_true = new_label();
Label branch_false = new_label();
Label merge = new_label();
Label exit = new_label();
make_inst(spv::OpBranch, head);
make_inst(spv::OpLabel, head);
make_inst(spv::OpLoopMerge, branch_true, merge, 0);
make_inst(spv::OpBranch, body);
make_inst(spv::OpLabel, body);
// while (true)
{
// int old = addr_ptr[0];
Value old_val = load_variable(addr_ptr, t_uint32_);
// int new = floatBitsToInt(atomic_op(intBitsToFloat(old), data));
Value old_float = make_value(spv::OpBitcast, t_fp32_, old_val);
Value new_float = atomic_op(old_float, data);
Value new_val = make_value(spv::OpBitcast, t_uint32_, new_float);
// int loaded = atomicCompSwap(vals[0], old, new);
/*
* Don't need this part, theoretically
auto semantics = uint_immediate_number(
t_uint32_, spv::MemorySemanticsAcquireReleaseMask |
spv::MemorySemanticsUniformMemoryMask);
make_inst(spv::OpMemoryBarrier, const_i32_one_, semantics);
*/
Value loaded = make_value(
spv::OpAtomicCompareExchange, t_uint32_, addr_ptr,
/*scope=*/const_i32_one_, /*semantics if equal=*/const_i32_zero_,
/*semantics if unequal=*/const_i32_zero_, new_val, old_val);
// bool ok = (loaded == old);
Value ok = make_value(spv::OpIEqual, t_bool_, loaded, old_val);
// int ret_val_int = loaded;
store_variable(ret_val_int, loaded);
// if (ok)
make_inst(spv::OpSelectionMerge, branch_false, 0);
make_inst(spv::OpBranchConditional, ok, branch_true, branch_false);
{
make_inst(spv::OpLabel, branch_true);
make_inst(spv::OpBranch, exit);
}
// else
{
make_inst(spv::OpLabel, branch_false);
make_inst(spv::OpBranch, merge);
}
// continue;
make_inst(spv::OpLabel, merge);
make_inst(spv::OpBranch, head);
}
make_inst(spv::OpLabel, exit);
return make_value(spv::OpBitcast, t_fp32_,
load_variable(ret_val_int, t_uint32_));
};
if (op_type == AtomicOpType::add) {
return atomic_func_([&](Value lhs, Value rhs) { return add(lhs, rhs); });
} else if (op_type == AtomicOpType::sub) {
return atomic_func_([&](Value lhs, Value rhs) { return sub(lhs, rhs); });
} else if (op_type == AtomicOpType::min) {
return atomic_func_([&](Value lhs, Value rhs) {
return call_glsl450(t_fp32_, /*FMin*/ 37, lhs, rhs);
});
} else if (op_type == AtomicOpType::max) {
return atomic_func_([&](Value lhs, Value rhs) {
return call_glsl450(t_fp32_, /*FMax*/ 40, lhs, rhs);
});
} else {
TI_NOT_IMPLEMENTED
}
}
Value IRBuilder::rand_u32(Value global_tmp_) {
if (!init_rand_) {
init_random_function(global_tmp_);
}
Value _11u = uint_immediate_number(t_uint32_, 11u);
Value _19u = uint_immediate_number(t_uint32_, 19u);
Value _8u = uint_immediate_number(t_uint32_, 8u);
Value _1000000007u = uint_immediate_number(t_uint32_, 1000000007u);
Value tmp0 = load_variable(rand_x_, t_uint32_);
Value tmp1 = make_value(spv::OpShiftLeftLogical, t_uint32_, tmp0, _11u);
Value tmp_t = make_value(spv::OpBitwiseXor, t_uint32_, tmp0, tmp1); // t
store_variable(rand_x_, load_variable(rand_y_, t_uint32_));
store_variable(rand_y_, load_variable(rand_z_, t_uint32_));