diff options
| -rw-r--r-- | src/shader_recompiler/frontend/ir/basic_block.cpp | 33 | ||||
| -rw-r--r-- | src/shader_recompiler/frontend/ir/microinstruction.cpp | 102 | ||||
| -rw-r--r-- | src/shader_recompiler/frontend/ir/microinstruction.h | 37 | ||||
| -rw-r--r-- | src/shader_recompiler/frontend/ir/opcodes.inc | 2 | ||||
| -rw-r--r-- | src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp | 22 | ||||
| -rw-r--r-- | src/shader_recompiler/object_pool.h | 11 |
6 files changed, 132 insertions, 75 deletions
diff --git a/src/shader_recompiler/frontend/ir/basic_block.cpp b/src/shader_recompiler/frontend/ir/basic_block.cpp index 1a5d82135..50c6a83cd 100644 --- a/src/shader_recompiler/frontend/ir/basic_block.cpp +++ b/src/shader_recompiler/frontend/ir/basic_block.cpp @@ -129,26 +129,21 @@ std::string DumpBlock(const Block& block, const std::map<const Block*, size_t>& } else { ret += fmt::format(" {}", op); // '%00000 = ' -> 1 + 5 + 3 = 9 spaces } - if (op == Opcode::Phi) { - size_t val_index{0}; - for (const auto& [phi_block, phi_val] : inst.PhiOperands()) { - ret += val_index != 0 ? ", " : " "; - ret += fmt::format("[ {}, {} ]", ArgToIndex(block_to_index, inst_to_index, phi_val), - BlockToIndex(block_to_index, phi_block)); - ++val_index; + const size_t arg_count{NumArgsOf(op)}; + for (size_t arg_index = 0; arg_index < arg_count; ++arg_index) { + const Value arg{inst.Arg(arg_index)}; + const std::string arg_str{ArgToIndex(block_to_index, inst_to_index, arg)}; + ret += arg_index != 0 ? ", " : " "; + if (op == Opcode::Phi) { + ret += fmt::format("[ {}, {} ]", arg_index, + BlockToIndex(block_to_index, inst.PhiBlock(arg_index))); + } else { + ret += arg_str; } - } else { - const size_t arg_count{NumArgsOf(op)}; - for (size_t arg_index = 0; arg_index < arg_count; ++arg_index) { - const Value arg{inst.Arg(arg_index)}; - ret += arg_index != 0 ? ", " : " "; - ret += ArgToIndex(block_to_index, inst_to_index, arg); - - const Type actual_type{arg.Type()}; - const Type expected_type{ArgTypeOf(op, arg_index)}; - if (!AreTypesCompatible(actual_type, expected_type)) { - ret += fmt::format("<type error: {} != {}>", actual_type, expected_type); - } + const Type actual_type{arg.Type()}; + const Type expected_type{ArgTypeOf(op, arg_index)}; + if (!AreTypesCompatible(actual_type, expected_type)) { + ret += fmt::format("<type error: {} != {}>", actual_type, expected_type); } } if (TypeOf(op) != Type::Void) { diff --git a/src/shader_recompiler/frontend/ir/microinstruction.cpp b/src/shader_recompiler/frontend/ir/microinstruction.cpp index de953838c..e7ca92039 100644 --- a/src/shader_recompiler/frontend/ir/microinstruction.cpp +++ b/src/shader_recompiler/frontend/ir/microinstruction.cpp @@ -3,6 +3,7 @@ // Refer to the license.txt file included. #include <algorithm> +#include <memory> #include "shader_recompiler/exception.h" #include "shader_recompiler/frontend/ir/microinstruction.h" @@ -30,6 +31,22 @@ static void RemovePseudoInstruction(IR::Inst*& inst, IR::Opcode expected_opcode) inst = nullptr; } +Inst::Inst(IR::Opcode op_, u64 flags_) noexcept : op{op_}, flags{flags_} { + if (op == Opcode::Phi) { + std::construct_at(&phi_args); + } else { + std::construct_at(&args); + } +} + +Inst::~Inst() { + if (op == Opcode::Phi) { + std::destroy_at(&phi_args); + } else { + std::destroy_at(&args); + } +} + bool Inst::MayHaveSideEffects() const noexcept { switch (op) { case Opcode::Branch: @@ -71,7 +88,10 @@ bool Inst::IsPseudoInstruction() const noexcept { } } -bool Inst::AreAllArgsImmediates() const noexcept { +bool Inst::AreAllArgsImmediates() const { + if (op == Opcode::Phi) { + throw LogicError("Testing for all arguments are immediates on phi instruction"); + } return std::all_of(args.begin(), args.begin() + NumArgs(), [](const IR::Value& value) { return value.IsImmediate(); }); } @@ -101,7 +121,7 @@ Inst* Inst::GetAssociatedPseudoOperation(IR::Opcode opcode) { } size_t Inst::NumArgs() const { - return NumArgsOf(op); + return op == Opcode::Phi ? phi_args.size() : NumArgsOf(op); } IR::Type Inst::Type() const { @@ -109,13 +129,23 @@ IR::Type Inst::Type() const { } Value Inst::Arg(size_t index) const { - if (index >= NumArgsOf(op)) { - throw InvalidArgument("Out of bounds argument index {} in opcode {}", index, op); + if (op == Opcode::Phi) { + if (index >= phi_args.size()) { + throw InvalidArgument("Out of bounds argument index {} in phi instruction", index); + } + return phi_args[index].second; + } else { + if (index >= NumArgsOf(op)) { + throw InvalidArgument("Out of bounds argument index {} in opcode {}", index, op); + } + return args[index]; } - return args[index]; } void Inst::SetArg(size_t index, Value value) { + if (op == Opcode::Phi) { + throw LogicError("Setting argument on a phi instruction"); + } if (index >= NumArgsOf(op)) { throw InvalidArgument("Out of bounds argument index {} in opcode {}", index, op); } @@ -128,15 +158,21 @@ void Inst::SetArg(size_t index, Value value) { args[index] = value; } -std::span<const std::pair<Block*, Value>> Inst::PhiOperands() const noexcept { - return phi_operands; +Block* Inst::PhiBlock(size_t index) const { + if (op != Opcode::Phi) { + throw LogicError("{} is not a Phi instruction", op); + } + if (index >= phi_args.size()) { + throw InvalidArgument("Out of bounds argument index {} in phi instruction"); + } + return phi_args[index].first; } void Inst::AddPhiOperand(Block* predecessor, const Value& value) { if (!value.IsImmediate()) { Use(value); } - phi_operands.emplace_back(predecessor, value); + phi_args.emplace_back(predecessor, value); } void Inst::Invalidate() { @@ -145,18 +181,22 @@ void Inst::Invalidate() { } void Inst::ClearArgs() { - for (auto& value : args) { - if (!value.IsImmediate()) { - UndoUse(value); + if (op == Opcode::Phi) { + for (auto& pair : phi_args) { + IR::Value& value{pair.second}; + if (!value.IsImmediate()) { + UndoUse(value); + } } - value = {}; - } - for (auto& [phi_block, phi_op] : phi_operands) { - if (!phi_op.IsImmediate()) { - UndoUse(phi_op); + phi_args.clear(); + } else { + for (auto& value : args) { + if (!value.IsImmediate()) { + UndoUse(value); + } + value = {}; } } - phi_operands.clear(); } void Inst::ReplaceUsesWith(Value replacement) { @@ -167,24 +207,29 @@ void Inst::ReplaceUsesWith(Value replacement) { if (!replacement.IsImmediate()) { Use(replacement); } - args[0] = replacement; + if (op == Opcode::Phi) { + phi_args[0].second = replacement; + } else { + args[0] = replacement; + } } void Inst::Use(const Value& value) { - ++value.Inst()->use_count; + Inst* const inst{value.Inst()}; + ++inst->use_count; switch (op) { case Opcode::GetZeroFromOp: - SetPseudoInstruction(value.Inst()->zero_inst, this); + SetPseudoInstruction(inst->zero_inst, this); break; case Opcode::GetSignFromOp: - SetPseudoInstruction(value.Inst()->sign_inst, this); + SetPseudoInstruction(inst->sign_inst, this); break; case Opcode::GetCarryFromOp: - SetPseudoInstruction(value.Inst()->carry_inst, this); + SetPseudoInstruction(inst->carry_inst, this); break; case Opcode::GetOverflowFromOp: - SetPseudoInstruction(value.Inst()->overflow_inst, this); + SetPseudoInstruction(inst->overflow_inst, this); break; default: break; @@ -192,20 +237,21 @@ void Inst::Use(const Value& value) { } void Inst::UndoUse(const Value& value) { - --value.Inst()->use_count; + Inst* const inst{value.Inst()}; + --inst->use_count; switch (op) { case Opcode::GetZeroFromOp: - RemovePseudoInstruction(value.Inst()->zero_inst, Opcode::GetZeroFromOp); + RemovePseudoInstruction(inst->zero_inst, Opcode::GetZeroFromOp); break; case Opcode::GetSignFromOp: - RemovePseudoInstruction(value.Inst()->sign_inst, Opcode::GetSignFromOp); + RemovePseudoInstruction(inst->sign_inst, Opcode::GetSignFromOp); break; case Opcode::GetCarryFromOp: - RemovePseudoInstruction(value.Inst()->carry_inst, Opcode::GetCarryFromOp); + RemovePseudoInstruction(inst->carry_inst, Opcode::GetCarryFromOp); break; case Opcode::GetOverflowFromOp: - RemovePseudoInstruction(value.Inst()->overflow_inst, Opcode::GetOverflowFromOp); + RemovePseudoInstruction(inst->overflow_inst, Opcode::GetOverflowFromOp); break; default: break; diff --git a/src/shader_recompiler/frontend/ir/microinstruction.h b/src/shader_recompiler/frontend/ir/microinstruction.h index 80baffb2e..ddf0f90a9 100644 --- a/src/shader_recompiler/frontend/ir/microinstruction.h +++ b/src/shader_recompiler/frontend/ir/microinstruction.h @@ -6,8 +6,8 @@ #include <array> #include <cstring> -#include <span> #include <type_traits> +#include <utility> #include <vector> #include <boost/intrusive/list.hpp> @@ -25,7 +25,14 @@ constexpr size_t MAX_ARG_COUNT = 4; class Inst : public boost::intrusive::list_base_hook<> { public: - explicit Inst(Opcode op_, u64 flags_) noexcept : op{op_}, flags{flags_} {} + explicit Inst(Opcode op_, u64 flags_) noexcept; + ~Inst(); + + Inst& operator=(const Inst&) = delete; + Inst(const Inst&) = delete; + + Inst& operator=(Inst&&) = delete; + Inst(Inst&&) = delete; /// Get the number of uses this instruction has. [[nodiscard]] int UseCount() const noexcept { @@ -50,26 +57,26 @@ public: [[nodiscard]] bool IsPseudoInstruction() const noexcept; /// Determines if all arguments of this instruction are immediates. - [[nodiscard]] bool AreAllArgsImmediates() const noexcept; + [[nodiscard]] bool AreAllArgsImmediates() const; /// Determines if there is a pseudo-operation associated with this instruction. [[nodiscard]] bool HasAssociatedPseudoOperation() const noexcept; /// Gets a pseudo-operation associated with this instruction [[nodiscard]] Inst* GetAssociatedPseudoOperation(IR::Opcode opcode); - /// Get the number of arguments this instruction has. - [[nodiscard]] size_t NumArgs() const; - /// Get the type this instruction returns. [[nodiscard]] IR::Type Type() const; + /// Get the number of arguments this instruction has. + [[nodiscard]] size_t NumArgs() const; + /// Get the value of a given argument index. [[nodiscard]] Value Arg(size_t index) const; /// Set the value of a given argument index. void SetArg(size_t index, Value value); - /// Get an immutable span to the phi operands. - [[nodiscard]] std::span<const std::pair<Block*, Value>> PhiOperands() const noexcept; + /// Get a pointer to the block of a phi argument. + [[nodiscard]] Block* PhiBlock(size_t index) const; /// Add phi operand to a phi instruction. void AddPhiOperand(Block* predecessor, const Value& value); @@ -87,18 +94,26 @@ public: } private: + struct NonTriviallyDummy { + NonTriviallyDummy() noexcept {} + }; + void Use(const Value& value); void UndoUse(const Value& value); IR::Opcode op{}; int use_count{}; - std::array<Value, MAX_ARG_COUNT> args{}; + u64 flags{}; + union { + NonTriviallyDummy dummy{}; + std::array<Value, MAX_ARG_COUNT> args; + std::vector<std::pair<Block*, Value>> phi_args; + }; Inst* zero_inst{}; Inst* sign_inst{}; Inst* carry_inst{}; Inst* overflow_inst{}; - std::vector<std::pair<Block*, Value>> phi_operands; - u64 flags{}; }; +static_assert(sizeof(Inst) <= 128, "Inst size unintentionally increased its size"); } // namespace Shader::IR diff --git a/src/shader_recompiler/frontend/ir/opcodes.inc b/src/shader_recompiler/frontend/ir/opcodes.inc index 6eb105d92..82b04f37c 100644 --- a/src/shader_recompiler/frontend/ir/opcodes.inc +++ b/src/shader_recompiler/frontend/ir/opcodes.inc @@ -3,9 +3,9 @@ // Refer to the license.txt file included. // opcode name, return type, arg1 type, arg2 type, arg3 type, arg4 type, ... +OPCODE(Phi, Opaque, ) OPCODE(Void, Void, ) OPCODE(Identity, Opaque, Opaque, ) -OPCODE(Phi, Opaque, /*todo*/ ) // Control flow OPCODE(Branch, Void, Label, ) diff --git a/src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp b/src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp index 7713e3ba9..15a9db90a 100644 --- a/src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp +++ b/src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp @@ -104,32 +104,34 @@ private: val = ReadVariable(variable, preds.front()); } else { // Break potential cycles with operandless phi - val = IR::Value{&*block->PrependNewInst(block->begin(), IR::Opcode::Phi)}; + IR::Inst& phi_inst{*block->PrependNewInst(block->begin(), IR::Opcode::Phi)}; + val = IR::Value{&phi_inst}; WriteVariable(variable, block, val); - val = AddPhiOperands(variable, val, block); + val = AddPhiOperands(variable, phi_inst, block); } WriteVariable(variable, block, val); return val; } - IR::Value AddPhiOperands(auto variable, const IR::Value& phi, IR::Block* block) { + IR::Value AddPhiOperands(auto variable, IR::Inst& phi, IR::Block* block) { for (IR::Block* const pred : block->ImmediatePredecessors()) { - phi.Inst()->AddPhiOperand(pred, ReadVariable(variable, pred)); + phi.AddPhiOperand(pred, ReadVariable(variable, pred)); } return TryRemoveTrivialPhi(phi, block, UndefOpcode(variable)); } - IR::Value TryRemoveTrivialPhi(const IR::Value& phi, IR::Block* block, IR::Opcode undef_opcode) { + IR::Value TryRemoveTrivialPhi(IR::Inst& phi, IR::Block* block, IR::Opcode undef_opcode) { IR::Value same; - for (const auto& pair : phi.Inst()->PhiOperands()) { - const IR::Value& op{pair.second}; - if (op == same || op == phi) { + const size_t num_args{phi.NumArgs()}; + for (size_t arg_index = 0; arg_index < num_args; ++arg_index) { + const IR::Value& op{phi.Arg(arg_index)}; + if (op == same || op == IR::Value{&phi}) { // Unique value or self-reference continue; } if (!same.IsEmpty()) { // The phi merges at least two values: not trivial - return phi; + return IR::Value{&phi}; } same = op; } @@ -139,7 +141,7 @@ private: same = IR::Value{&*block->PrependNewInst(first_not_phi, undef_opcode)}; } // Reroute all uses of phi to same and remove phi - phi.Inst()->ReplaceUsesWith(same); + phi.ReplaceUsesWith(same); // TODO: Try to recursively remove all phi users, which might have become trivial return same; } diff --git a/src/shader_recompiler/object_pool.h b/src/shader_recompiler/object_pool.h index 7c65bbd92..a573add32 100644 --- a/src/shader_recompiler/object_pool.h +++ b/src/shader_recompiler/object_pool.h @@ -6,6 +6,7 @@ #include <memory> #include <type_traits> +#include <utility> namespace Shader { @@ -31,14 +32,12 @@ public: void ReleaseContents() { Chunk* chunk{&root}; - if (chunk) { - const size_t free_objects{chunk->free_objects}; - if (free_objects == chunk_size) { + while (chunk) { + if (chunk->free_objects == chunk_size) { break; } - chunk->free_objects = chunk_size; - for (size_t obj_id = free_objects; obj_id < chunk_size; ++obj_id) { - chunk->storage[obj_id].object.~T(); + for (; chunk->free_objects < chunk_size; ++chunk->free_objects) { + chunk->storage[chunk->free_objects].object.~T(); } chunk = chunk->next.get(); } |