| // Copyright (c) 2018 Google LLC |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "upgrade_memory_model.h" |
| |
| #include <utility> |
| |
| #include "source/opt/ir_builder.h" |
| #include "source/opt/ir_context.h" |
| #include "source/spirv_constant.h" |
| #include "source/util/make_unique.h" |
| |
| namespace spvtools { |
| namespace opt { |
| |
| Pass::Status UpgradeMemoryModel::Process() { |
| // TODO: This pass needs changes to support cooperative matrices. |
| if (context()->get_feature_mgr()->HasCapability( |
| SpvCapabilityCooperativeMatrixNV)) { |
| return Pass::Status::SuccessWithoutChange; |
| } |
| |
| // Only update Logical GLSL450 to Logical VulkanKHR. |
| Instruction* memory_model = get_module()->GetMemoryModel(); |
| if (memory_model->GetSingleWordInOperand(0u) != SpvAddressingModelLogical || |
| memory_model->GetSingleWordInOperand(1u) != SpvMemoryModelGLSL450) { |
| return Pass::Status::SuccessWithoutChange; |
| } |
| |
| UpgradeMemoryModelInstruction(); |
| UpgradeInstructions(); |
| CleanupDecorations(); |
| UpgradeBarriers(); |
| UpgradeMemoryScope(); |
| |
| return Pass::Status::SuccessWithChange; |
| } |
| |
| void UpgradeMemoryModel::UpgradeMemoryModelInstruction() { |
| // Overall changes necessary: |
| // 1. Add the OpExtension. |
| // 2. Add the OpCapability. |
| // 3. Modify the memory model. |
| Instruction* memory_model = get_module()->GetMemoryModel(); |
| context()->AddCapability(MakeUnique<Instruction>( |
| context(), SpvOpCapability, 0, 0, |
| std::initializer_list<Operand>{ |
| {SPV_OPERAND_TYPE_CAPABILITY, {SpvCapabilityVulkanMemoryModelKHR}}})); |
| const std::string extension = "SPV_KHR_vulkan_memory_model"; |
| std::vector<uint32_t> words(extension.size() / 4 + 1, 0); |
| char* dst = reinterpret_cast<char*>(words.data()); |
| strncpy(dst, extension.c_str(), extension.size()); |
| context()->AddExtension( |
| MakeUnique<Instruction>(context(), SpvOpExtension, 0, 0, |
| std::initializer_list<Operand>{ |
| {SPV_OPERAND_TYPE_LITERAL_STRING, words}})); |
| memory_model->SetInOperand(1u, {SpvMemoryModelVulkanKHR}); |
| } |
| |
| void UpgradeMemoryModel::UpgradeInstructions() { |
| // Coherent and Volatile decorations are deprecated. Remove them and replace |
| // with flags on the memory/image operations. The decorations can occur on |
| // OpVariable, OpFunctionParameter (of pointer type) and OpStructType (member |
| // decoration). Trace from the decoration target(s) to the final memory/image |
| // instructions. Additionally, Workgroup storage class variables and function |
| // parameters are implicitly coherent in GLSL450. |
| |
| // Upgrade modf and frexp first since they generate new stores. |
| // In SPIR-V 1.4 or later, normalize OpCopyMemory* access operands. |
| for (auto& func : *get_module()) { |
| func.ForEachInst([this](Instruction* inst) { |
| if (inst->opcode() == SpvOpExtInst) { |
| auto ext_inst = inst->GetSingleWordInOperand(1u); |
| if (ext_inst == GLSLstd450Modf || ext_inst == GLSLstd450Frexp) { |
| auto import = |
| get_def_use_mgr()->GetDef(inst->GetSingleWordInOperand(0u)); |
| if (reinterpret_cast<char*>(import->GetInOperand(0u).words.data()) == |
| std::string("GLSL.std.450")) { |
| UpgradeExtInst(inst); |
| } |
| } |
| } else if (get_module()->version() >= SPV_SPIRV_VERSION_WORD(1, 4)) { |
| if (inst->opcode() == SpvOpCopyMemory || |
| inst->opcode() == SpvOpCopyMemorySized) { |
| uint32_t start_operand = inst->opcode() == SpvOpCopyMemory ? 2u : 3u; |
| if (inst->NumInOperands() > start_operand) { |
| auto num_access_words = MemoryAccessNumWords( |
| inst->GetSingleWordInOperand(start_operand)); |
| if ((num_access_words + start_operand) == inst->NumInOperands()) { |
| // There is a single memory access operand. Duplicate it to have a |
| // separate operand for both source and target. |
| for (uint32_t i = 0; i < num_access_words; ++i) { |
| auto operand = inst->GetInOperand(start_operand + i); |
| inst->AddOperand(std::move(operand)); |
| } |
| } |
| } else { |
| // Add two memory access operands. |
| inst->AddOperand( |
| {SPV_OPERAND_TYPE_MEMORY_ACCESS, {SpvMemoryAccessMaskNone}}); |
| inst->AddOperand( |
| {SPV_OPERAND_TYPE_MEMORY_ACCESS, {SpvMemoryAccessMaskNone}}); |
| } |
| } |
| } |
| }); |
| } |
| |
| UpgradeMemoryAndImages(); |
| UpgradeAtomics(); |
| } |
| |
| void UpgradeMemoryModel::UpgradeMemoryAndImages() { |
| for (auto& func : *get_module()) { |
| func.ForEachInst([this](Instruction* inst) { |
| bool is_coherent = false; |
| bool is_volatile = false; |
| bool src_coherent = false; |
| bool src_volatile = false; |
| bool dst_coherent = false; |
| bool dst_volatile = false; |
| uint32_t start_operand = 0u; |
| SpvScope scope = SpvScopeQueueFamilyKHR; |
| SpvScope src_scope = SpvScopeQueueFamilyKHR; |
| SpvScope dst_scope = SpvScopeQueueFamilyKHR; |
| switch (inst->opcode()) { |
| case SpvOpLoad: |
| case SpvOpStore: |
| std::tie(is_coherent, is_volatile, scope) = |
| GetInstructionAttributes(inst->GetSingleWordInOperand(0u)); |
| break; |
| case SpvOpImageRead: |
| case SpvOpImageSparseRead: |
| case SpvOpImageWrite: |
| std::tie(is_coherent, is_volatile, scope) = |
| GetInstructionAttributes(inst->GetSingleWordInOperand(0u)); |
| break; |
| case SpvOpCopyMemory: |
| case SpvOpCopyMemorySized: |
| std::tie(dst_coherent, dst_volatile, dst_scope) = |
| GetInstructionAttributes(inst->GetSingleWordInOperand(0u)); |
| std::tie(src_coherent, src_volatile, src_scope) = |
| GetInstructionAttributes(inst->GetSingleWordInOperand(1u)); |
| break; |
| default: |
| break; |
| } |
| |
| switch (inst->opcode()) { |
| case SpvOpLoad: |
| UpgradeFlags(inst, 1u, is_coherent, is_volatile, kVisibility, |
| kMemory); |
| break; |
| case SpvOpStore: |
| UpgradeFlags(inst, 2u, is_coherent, is_volatile, kAvailability, |
| kMemory); |
| break; |
| case SpvOpCopyMemory: |
| case SpvOpCopyMemorySized: |
| start_operand = inst->opcode() == SpvOpCopyMemory ? 2u : 3u; |
| if (get_module()->version() >= SPV_SPIRV_VERSION_WORD(1, 4)) { |
| // There are guaranteed to be two memory access operands at this |
| // point so treat source and target separately. |
| uint32_t num_access_words = MemoryAccessNumWords( |
| inst->GetSingleWordInOperand(start_operand)); |
| UpgradeFlags(inst, start_operand, dst_coherent, dst_volatile, |
| kAvailability, kMemory); |
| UpgradeFlags(inst, start_operand + num_access_words, src_coherent, |
| src_volatile, kVisibility, kMemory); |
| } else { |
| UpgradeFlags(inst, start_operand, dst_coherent, dst_volatile, |
| kAvailability, kMemory); |
| UpgradeFlags(inst, start_operand, src_coherent, src_volatile, |
| kVisibility, kMemory); |
| } |
| break; |
| case SpvOpImageRead: |
| case SpvOpImageSparseRead: |
| UpgradeFlags(inst, 2u, is_coherent, is_volatile, kVisibility, kImage); |
| break; |
| case SpvOpImageWrite: |
| UpgradeFlags(inst, 3u, is_coherent, is_volatile, kAvailability, |
| kImage); |
| break; |
| default: |
| break; |
| } |
| |
| // |is_coherent| is never used for the same instructions as |
| // |src_coherent| and |dst_coherent|. |
| if (is_coherent) { |
| inst->AddOperand( |
| {SPV_OPERAND_TYPE_SCOPE_ID, {GetScopeConstant(scope)}}); |
| } |
| if (get_module()->version() >= SPV_SPIRV_VERSION_WORD(1, 4)) { |
| // There are two memory access operands. The first is for the target and |
| // the second is for the source. |
| if (dst_coherent || src_coherent) { |
| start_operand = inst->opcode() == SpvOpCopyMemory ? 2u : 3u; |
| std::vector<Operand> new_operands; |
| uint32_t num_access_words = |
| MemoryAccessNumWords(inst->GetSingleWordInOperand(start_operand)); |
| // The flags were already updated so subtract if we're adding a |
| // scope. |
| if (dst_coherent) --num_access_words; |
| for (uint32_t i = 0; i < start_operand + num_access_words; ++i) { |
| new_operands.push_back(inst->GetInOperand(i)); |
| } |
| // Add the target scope if necessary. |
| if (dst_coherent) { |
| new_operands.push_back( |
| {SPV_OPERAND_TYPE_SCOPE_ID, {GetScopeConstant(dst_scope)}}); |
| } |
| // Copy the remaining current operands. |
| for (uint32_t i = start_operand + num_access_words; |
| i < inst->NumInOperands(); ++i) { |
| new_operands.push_back(inst->GetInOperand(i)); |
| } |
| // Add the source scope if necessary. |
| if (src_coherent) { |
| new_operands.push_back( |
| {SPV_OPERAND_TYPE_SCOPE_ID, {GetScopeConstant(src_scope)}}); |
| } |
| inst->SetInOperands(std::move(new_operands)); |
| } |
| } else { |
| // According to SPV_KHR_vulkan_memory_model, if both available and |
| // visible flags are used the first scope operand is for availability |
| // (writes) and the second is for visibility (reads). |
| if (dst_coherent) { |
| inst->AddOperand( |
| {SPV_OPERAND_TYPE_SCOPE_ID, {GetScopeConstant(dst_scope)}}); |
| } |
| if (src_coherent) { |
| inst->AddOperand( |
| {SPV_OPERAND_TYPE_SCOPE_ID, {GetScopeConstant(src_scope)}}); |
| } |
| } |
| }); |
| } |
| } |
| |
| void UpgradeMemoryModel::UpgradeAtomics() { |
| for (auto& func : *get_module()) { |
| func.ForEachInst([this](Instruction* inst) { |
| if (spvOpcodeIsAtomicOp(inst->opcode())) { |
| bool unused_coherent = false; |
| bool is_volatile = false; |
| SpvScope unused_scope = SpvScopeQueueFamilyKHR; |
| std::tie(unused_coherent, is_volatile, unused_scope) = |
| GetInstructionAttributes(inst->GetSingleWordInOperand(0)); |
| |
| UpgradeSemantics(inst, 2u, is_volatile); |
| if (inst->opcode() == SpvOpAtomicCompareExchange || |
| inst->opcode() == SpvOpAtomicCompareExchangeWeak) { |
| UpgradeSemantics(inst, 3u, is_volatile); |
| } |
| } |
| }); |
| } |
| } |
| |
| void UpgradeMemoryModel::UpgradeSemantics(Instruction* inst, |
| uint32_t in_operand, |
| bool is_volatile) { |
| if (!is_volatile) return; |
| |
| uint32_t semantics_id = inst->GetSingleWordInOperand(in_operand); |
| const analysis::Constant* constant = |
| context()->get_constant_mgr()->FindDeclaredConstant(semantics_id); |
| const analysis::Integer* type = constant->type()->AsInteger(); |
| assert(type && type->width() == 32); |
| uint32_t value = 0; |
| if (type->IsSigned()) { |
| value = static_cast<uint32_t>(constant->GetS32()); |
| } else { |
| value = constant->GetU32(); |
| } |
| |
| value |= SpvMemorySemanticsVolatileMask; |
| auto new_constant = context()->get_constant_mgr()->GetConstant(type, {value}); |
| auto new_semantics = |
| context()->get_constant_mgr()->GetDefiningInstruction(new_constant); |
| inst->SetInOperand(in_operand, {new_semantics->result_id()}); |
| } |
| |
| std::tuple<bool, bool, SpvScope> UpgradeMemoryModel::GetInstructionAttributes( |
| uint32_t id) { |
| // |id| is a pointer used in a memory/image instruction. Need to determine if |
| // that pointer points to volatile or coherent memory. Workgroup storage |
| // class is implicitly coherent and cannot be decorated with volatile, so |
| // short circuit that case. |
| Instruction* inst = context()->get_def_use_mgr()->GetDef(id); |
| analysis::Type* type = context()->get_type_mgr()->GetType(inst->type_id()); |
| if (type->AsPointer() && |
| type->AsPointer()->storage_class() == SpvStorageClassWorkgroup) { |
| return std::make_tuple(true, false, SpvScopeWorkgroup); |
| } |
| |
| bool is_coherent = false; |
| bool is_volatile = false; |
| std::unordered_set<uint32_t> visited; |
| std::tie(is_coherent, is_volatile) = |
| TraceInstruction(context()->get_def_use_mgr()->GetDef(id), |
| std::vector<uint32_t>(), &visited); |
| |
| return std::make_tuple(is_coherent, is_volatile, SpvScopeQueueFamilyKHR); |
| } |
| |
| std::pair<bool, bool> UpgradeMemoryModel::TraceInstruction( |
| Instruction* inst, std::vector<uint32_t> indices, |
| std::unordered_set<uint32_t>* visited) { |
| auto iter = cache_.find(std::make_pair(inst->result_id(), indices)); |
| if (iter != cache_.end()) { |
| return iter->second; |
| } |
| |
| if (!visited->insert(inst->result_id()).second) { |
| return std::make_pair(false, false); |
| } |
| |
| // Initialize the cache before |indices| is (potentially) modified. |
| auto& cached_result = cache_[std::make_pair(inst->result_id(), indices)]; |
| cached_result.first = false; |
| cached_result.second = false; |
| |
| bool is_coherent = false; |
| bool is_volatile = false; |
| switch (inst->opcode()) { |
| case SpvOpVariable: |
| case SpvOpFunctionParameter: |
| is_coherent |= HasDecoration(inst, 0, SpvDecorationCoherent); |
| is_volatile |= HasDecoration(inst, 0, SpvDecorationVolatile); |
| if (!is_coherent || !is_volatile) { |
| bool type_coherent = false; |
| bool type_volatile = false; |
| std::tie(type_coherent, type_volatile) = |
| CheckType(inst->type_id(), indices); |
| is_coherent |= type_coherent; |
| is_volatile |= type_volatile; |
| } |
| break; |
| case SpvOpAccessChain: |
| case SpvOpInBoundsAccessChain: |
| // Store indices in reverse order. |
| for (uint32_t i = inst->NumInOperands() - 1; i > 0; --i) { |
| indices.push_back(inst->GetSingleWordInOperand(i)); |
| } |
| break; |
| case SpvOpPtrAccessChain: |
| // Store indices in reverse order. Skip the |Element| operand. |
| for (uint32_t i = inst->NumInOperands() - 1; i > 1; --i) { |
| indices.push_back(inst->GetSingleWordInOperand(i)); |
| } |
| break; |
| default: |
| break; |
| } |
| |
| // No point searching further. |
| if (is_coherent && is_volatile) { |
| cached_result.first = true; |
| cached_result.second = true; |
| return std::make_pair(true, true); |
| } |
| |
| // Variables and function parameters are sources. Continue searching until we |
| // reach them. |
| if (inst->opcode() != SpvOpVariable && |
| inst->opcode() != SpvOpFunctionParameter) { |
| inst->ForEachInId([this, &is_coherent, &is_volatile, &indices, |
| &visited](const uint32_t* id_ptr) { |
| Instruction* op_inst = context()->get_def_use_mgr()->GetDef(*id_ptr); |
| const analysis::Type* type = |
| context()->get_type_mgr()->GetType(op_inst->type_id()); |
| if (type && |
| (type->AsPointer() || type->AsImage() || type->AsSampledImage())) { |
| bool operand_coherent = false; |
| bool operand_volatile = false; |
| std::tie(operand_coherent, operand_volatile) = |
| TraceInstruction(op_inst, indices, visited); |
| is_coherent |= operand_coherent; |
| is_volatile |= operand_volatile; |
| } |
| }); |
| } |
| |
| cached_result.first = is_coherent; |
| cached_result.second = is_volatile; |
| return std::make_pair(is_coherent, is_volatile); |
| } |
| |
| std::pair<bool, bool> UpgradeMemoryModel::CheckType( |
| uint32_t type_id, const std::vector<uint32_t>& indices) { |
| bool is_coherent = false; |
| bool is_volatile = false; |
| Instruction* type_inst = context()->get_def_use_mgr()->GetDef(type_id); |
| assert(type_inst->opcode() == SpvOpTypePointer); |
| Instruction* element_inst = context()->get_def_use_mgr()->GetDef( |
| type_inst->GetSingleWordInOperand(1u)); |
| for (int i = (int)indices.size() - 1; i >= 0; --i) { |
| if (is_coherent && is_volatile) break; |
| |
| if (element_inst->opcode() == SpvOpTypePointer) { |
| element_inst = context()->get_def_use_mgr()->GetDef( |
| element_inst->GetSingleWordInOperand(1u)); |
| } else if (element_inst->opcode() == SpvOpTypeStruct) { |
| uint32_t index = indices.at(i); |
| Instruction* index_inst = context()->get_def_use_mgr()->GetDef(index); |
| assert(index_inst->opcode() == SpvOpConstant); |
| uint64_t value = GetIndexValue(index_inst); |
| is_coherent |= HasDecoration(element_inst, static_cast<uint32_t>(value), |
| SpvDecorationCoherent); |
| is_volatile |= HasDecoration(element_inst, static_cast<uint32_t>(value), |
| SpvDecorationVolatile); |
| element_inst = context()->get_def_use_mgr()->GetDef( |
| element_inst->GetSingleWordInOperand(static_cast<uint32_t>(value))); |
| } else { |
| assert(spvOpcodeIsComposite(element_inst->opcode())); |
| element_inst = context()->get_def_use_mgr()->GetDef( |
| element_inst->GetSingleWordInOperand(0u)); |
| } |
| } |
| |
| if (!is_coherent || !is_volatile) { |
| bool remaining_coherent = false; |
| bool remaining_volatile = false; |
| std::tie(remaining_coherent, remaining_volatile) = |
| CheckAllTypes(element_inst); |
| is_coherent |= remaining_coherent; |
| is_volatile |= remaining_volatile; |
| } |
| |
| return std::make_pair(is_coherent, is_volatile); |
| } |
| |
| std::pair<bool, bool> UpgradeMemoryModel::CheckAllTypes( |
| const Instruction* inst) { |
| std::unordered_set<const Instruction*> visited; |
| std::vector<const Instruction*> stack; |
| stack.push_back(inst); |
| |
| bool is_coherent = false; |
| bool is_volatile = false; |
| while (!stack.empty()) { |
| const Instruction* def = stack.back(); |
| stack.pop_back(); |
| |
| if (!visited.insert(def).second) continue; |
| |
| if (def->opcode() == SpvOpTypeStruct) { |
| // Any member decorated with coherent and/or volatile is enough to have |
| // the related operation be flagged as coherent and/or volatile. |
| is_coherent |= HasDecoration(def, std::numeric_limits<uint32_t>::max(), |
| SpvDecorationCoherent); |
| is_volatile |= HasDecoration(def, std::numeric_limits<uint32_t>::max(), |
| SpvDecorationVolatile); |
| if (is_coherent && is_volatile) |
| return std::make_pair(is_coherent, is_volatile); |
| |
| // Check the subtypes. |
| for (uint32_t i = 0; i < def->NumInOperands(); ++i) { |
| stack.push_back(context()->get_def_use_mgr()->GetDef( |
| def->GetSingleWordInOperand(i))); |
| } |
| } else if (spvOpcodeIsComposite(def->opcode())) { |
| stack.push_back(context()->get_def_use_mgr()->GetDef( |
| def->GetSingleWordInOperand(0u))); |
| } else if (def->opcode() == SpvOpTypePointer) { |
| stack.push_back(context()->get_def_use_mgr()->GetDef( |
| def->GetSingleWordInOperand(1u))); |
| } |
| } |
| |
| return std::make_pair(is_coherent, is_volatile); |
| } |
| |
| uint64_t UpgradeMemoryModel::GetIndexValue(Instruction* index_inst) { |
| const analysis::Constant* index_constant = |
| context()->get_constant_mgr()->GetConstantFromInst(index_inst); |
| assert(index_constant->AsIntConstant()); |
| if (index_constant->type()->AsInteger()->IsSigned()) { |
| if (index_constant->type()->AsInteger()->width() == 32) { |
| return index_constant->GetS32(); |
| } else { |
| return index_constant->GetS64(); |
| } |
| } else { |
| if (index_constant->type()->AsInteger()->width() == 32) { |
| return index_constant->GetU32(); |
| } else { |
| return index_constant->GetU64(); |
| } |
| } |
| } |
| |
| bool UpgradeMemoryModel::HasDecoration(const Instruction* inst, uint32_t value, |
| SpvDecoration decoration) { |
| // If the iteration was terminated early then an appropriate decoration was |
| // found. |
| return !context()->get_decoration_mgr()->WhileEachDecoration( |
| inst->result_id(), decoration, [value](const Instruction& i) { |
| if (i.opcode() == SpvOpDecorate || i.opcode() == SpvOpDecorateId) { |
| return false; |
| } else if (i.opcode() == SpvOpMemberDecorate) { |
| if (value == i.GetSingleWordInOperand(1u) || |
| value == std::numeric_limits<uint32_t>::max()) |
| return false; |
| } |
| |
| return true; |
| }); |
| } |
| |
| void UpgradeMemoryModel::UpgradeFlags(Instruction* inst, uint32_t in_operand, |
| bool is_coherent, bool is_volatile, |
| OperationType operation_type, |
| InstructionType inst_type) { |
| if (!is_coherent && !is_volatile) return; |
| |
| uint32_t flags = 0; |
| if (inst->NumInOperands() > in_operand) { |
| flags |= inst->GetSingleWordInOperand(in_operand); |
| } |
| if (is_coherent) { |
| if (inst_type == kMemory) { |
| flags |= SpvMemoryAccessNonPrivatePointerKHRMask; |
| if (operation_type == kVisibility) { |
| flags |= SpvMemoryAccessMakePointerVisibleKHRMask; |
| } else { |
| flags |= SpvMemoryAccessMakePointerAvailableKHRMask; |
| } |
| } else { |
| flags |= SpvImageOperandsNonPrivateTexelKHRMask; |
| if (operation_type == kVisibility) { |
| flags |= SpvImageOperandsMakeTexelVisibleKHRMask; |
| } else { |
| flags |= SpvImageOperandsMakeTexelAvailableKHRMask; |
| } |
| } |
| } |
| |
| if (is_volatile) { |
| if (inst_type == kMemory) { |
| flags |= SpvMemoryAccessVolatileMask; |
| } else { |
| flags |= SpvImageOperandsVolatileTexelKHRMask; |
| } |
| } |
| |
| if (inst->NumInOperands() > in_operand) { |
| inst->SetInOperand(in_operand, {flags}); |
| } else if (inst_type == kMemory) { |
| inst->AddOperand({SPV_OPERAND_TYPE_OPTIONAL_MEMORY_ACCESS, {flags}}); |
| } else { |
| inst->AddOperand({SPV_OPERAND_TYPE_OPTIONAL_IMAGE, {flags}}); |
| } |
| } |
| |
| uint32_t UpgradeMemoryModel::GetScopeConstant(SpvScope scope) { |
| analysis::Integer int_ty(32, false); |
| uint32_t int_id = context()->get_type_mgr()->GetTypeInstruction(&int_ty); |
| const analysis::Constant* constant = |
| context()->get_constant_mgr()->GetConstant( |
| context()->get_type_mgr()->GetType(int_id), |
| {static_cast<uint32_t>(scope)}); |
| return context() |
| ->get_constant_mgr() |
| ->GetDefiningInstruction(constant) |
| ->result_id(); |
| } |
| |
| void UpgradeMemoryModel::CleanupDecorations() { |
| // All of the volatile and coherent decorations have been dealt with, so now |
| // we can just remove them. |
| get_module()->ForEachInst([this](Instruction* inst) { |
| if (inst->result_id() != 0) { |
| context()->get_decoration_mgr()->RemoveDecorationsFrom( |
| inst->result_id(), [](const Instruction& dec) { |
| switch (dec.opcode()) { |
| case SpvOpDecorate: |
| case SpvOpDecorateId: |
| if (dec.GetSingleWordInOperand(1u) == SpvDecorationCoherent || |
| dec.GetSingleWordInOperand(1u) == SpvDecorationVolatile) |
| return true; |
| break; |
| case SpvOpMemberDecorate: |
| if (dec.GetSingleWordInOperand(2u) == SpvDecorationCoherent || |
| dec.GetSingleWordInOperand(2u) == SpvDecorationVolatile) |
| return true; |
| break; |
| default: |
| break; |
| } |
| return false; |
| }); |
| } |
| }); |
| } |
| |
| void UpgradeMemoryModel::UpgradeBarriers() { |
| std::vector<Instruction*> barriers; |
| // Collects all the control barriers in |function|. Returns true if the |
| // function operates on the Output storage class. |
| ProcessFunction CollectBarriers = [this, &barriers](Function* function) { |
| bool operates_on_output = false; |
| for (auto& block : *function) { |
| block.ForEachInst([this, &barriers, |
| &operates_on_output](Instruction* inst) { |
| if (inst->opcode() == SpvOpControlBarrier) { |
| barriers.push_back(inst); |
| } else if (!operates_on_output) { |
| // This instruction operates on output storage class if it is a |
| // pointer to output type or any input operand is a pointer to output |
| // type. |
| analysis::Type* type = |
| context()->get_type_mgr()->GetType(inst->type_id()); |
| if (type && type->AsPointer() && |
| type->AsPointer()->storage_class() == SpvStorageClassOutput) { |
| operates_on_output = true; |
| return; |
| } |
| inst->ForEachInId([this, &operates_on_output](uint32_t* id_ptr) { |
| Instruction* op_inst = |
| context()->get_def_use_mgr()->GetDef(*id_ptr); |
| analysis::Type* op_type = |
| context()->get_type_mgr()->GetType(op_inst->type_id()); |
| if (op_type && op_type->AsPointer() && |
| op_type->AsPointer()->storage_class() == SpvStorageClassOutput) |
| operates_on_output = true; |
| }); |
| } |
| }); |
| } |
| return operates_on_output; |
| }; |
| |
| std::queue<uint32_t> roots; |
| for (auto& e : get_module()->entry_points()) |
| if (e.GetSingleWordInOperand(0u) == SpvExecutionModelTessellationControl) { |
| roots.push(e.GetSingleWordInOperand(1u)); |
| if (context()->ProcessCallTreeFromRoots(CollectBarriers, &roots)) { |
| for (auto barrier : barriers) { |
| // Add OutputMemoryKHR to the semantics of the barriers. |
| uint32_t semantics_id = barrier->GetSingleWordInOperand(2u); |
| Instruction* semantics_inst = |
| context()->get_def_use_mgr()->GetDef(semantics_id); |
| analysis::Type* semantics_type = |
| context()->get_type_mgr()->GetType(semantics_inst->type_id()); |
| uint64_t semantics_value = GetIndexValue(semantics_inst); |
| const analysis::Constant* constant = |
| context()->get_constant_mgr()->GetConstant( |
| semantics_type, {static_cast<uint32_t>(semantics_value) | |
| SpvMemorySemanticsOutputMemoryKHRMask}); |
| barrier->SetInOperand(2u, {context() |
| ->get_constant_mgr() |
| ->GetDefiningInstruction(constant) |
| ->result_id()}); |
| } |
| } |
| barriers.clear(); |
| } |
| } |
| |
| void UpgradeMemoryModel::UpgradeMemoryScope() { |
| get_module()->ForEachInst([this](Instruction* inst) { |
| // Don't need to handle all the operations that take a scope. |
| // * Group operations can only be subgroup |
| // * Non-uniform can only be workgroup or subgroup |
| // * Named barriers are not supported by Vulkan |
| // * Workgroup ops (e.g. async_copy) have at most workgroup scope. |
| if (spvOpcodeIsAtomicOp(inst->opcode())) { |
| if (IsDeviceScope(inst->GetSingleWordInOperand(1))) { |
| inst->SetInOperand(1, {GetScopeConstant(SpvScopeQueueFamilyKHR)}); |
| } |
| } else if (inst->opcode() == SpvOpControlBarrier) { |
| if (IsDeviceScope(inst->GetSingleWordInOperand(1))) { |
| inst->SetInOperand(1, {GetScopeConstant(SpvScopeQueueFamilyKHR)}); |
| } |
| } else if (inst->opcode() == SpvOpMemoryBarrier) { |
| if (IsDeviceScope(inst->GetSingleWordInOperand(0))) { |
| inst->SetInOperand(0, {GetScopeConstant(SpvScopeQueueFamilyKHR)}); |
| } |
| } |
| }); |
| } |
| |
| bool UpgradeMemoryModel::IsDeviceScope(uint32_t scope_id) { |
| const analysis::Constant* constant = |
| context()->get_constant_mgr()->FindDeclaredConstant(scope_id); |
| assert(constant && "Memory scope must be a constant"); |
| |
| const analysis::Integer* type = constant->type()->AsInteger(); |
| assert(type); |
| assert(type->width() == 32 || type->width() == 64); |
| if (type->width() == 32) { |
| if (type->IsSigned()) |
| return static_cast<uint32_t>(constant->GetS32()) == SpvScopeDevice; |
| else |
| return static_cast<uint32_t>(constant->GetU32()) == SpvScopeDevice; |
| } else { |
| if (type->IsSigned()) |
| return static_cast<uint32_t>(constant->GetS64()) == SpvScopeDevice; |
| else |
| return static_cast<uint32_t>(constant->GetU64()) == SpvScopeDevice; |
| } |
| |
| assert(false); |
| return false; |
| } |
| |
| void UpgradeMemoryModel::UpgradeExtInst(Instruction* ext_inst) { |
| const bool is_modf = ext_inst->GetSingleWordInOperand(1u) == GLSLstd450Modf; |
| auto ptr_id = ext_inst->GetSingleWordInOperand(3u); |
| auto ptr_type_id = get_def_use_mgr()->GetDef(ptr_id)->type_id(); |
| auto pointee_type_id = |
| get_def_use_mgr()->GetDef(ptr_type_id)->GetSingleWordInOperand(1u); |
| auto element_type_id = ext_inst->type_id(); |
| std::vector<const analysis::Type*> element_types(2); |
| element_types[0] = context()->get_type_mgr()->GetType(element_type_id); |
| element_types[1] = context()->get_type_mgr()->GetType(pointee_type_id); |
| analysis::Struct struct_type(element_types); |
| uint32_t struct_id = |
| context()->get_type_mgr()->GetTypeInstruction(&struct_type); |
| // Change the operation |
| GLSLstd450 new_op = is_modf ? GLSLstd450ModfStruct : GLSLstd450FrexpStruct; |
| ext_inst->SetOperand(3u, {static_cast<uint32_t>(new_op)}); |
| // Remove the pointer argument |
| ext_inst->RemoveOperand(5u); |
| // Set the type id to the new struct. |
| ext_inst->SetResultType(struct_id); |
| |
| // The result is now a struct of the original result. The zero'th element is |
| // old result and should replace the old result. The one'th element needs to |
| // be stored via a new instruction. |
| auto where = ext_inst->NextNode(); |
| InstructionBuilder builder( |
| context(), where, |
| IRContext::kAnalysisDefUse | IRContext::kAnalysisInstrToBlockMapping); |
| auto extract_0 = |
| builder.AddCompositeExtract(element_type_id, ext_inst->result_id(), {0}); |
| context()->ReplaceAllUsesWith(ext_inst->result_id(), extract_0->result_id()); |
| // The extract's input was just changed to itself, so fix that. |
| extract_0->SetInOperand(0u, {ext_inst->result_id()}); |
| auto extract_1 = |
| builder.AddCompositeExtract(pointee_type_id, ext_inst->result_id(), {1}); |
| builder.AddStore(ptr_id, extract_1->result_id()); |
| } |
| |
| uint32_t UpgradeMemoryModel::MemoryAccessNumWords(uint32_t mask) { |
| uint32_t result = 1; |
| if (mask & SpvMemoryAccessAlignedMask) ++result; |
| if (mask & SpvMemoryAccessMakePointerAvailableKHRMask) ++result; |
| if (mask & SpvMemoryAccessMakePointerVisibleKHRMask) ++result; |
| return result; |
| } |
| |
| } // namespace opt |
| } // namespace spvtools |
