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-rw-r--r--src/shader_recompiler/CMakeLists.txt4
-rw-r--r--src/shader_recompiler/backend/spirv/emit_spirv.cpp45
-rw-r--r--src/shader_recompiler/backend/spirv/emit_spirv.h18
-rw-r--r--src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp8
-rw-r--r--src/shader_recompiler/backend/spirv/emit_spirv_control_flow.cpp25
-rw-r--r--src/shader_recompiler/backend/spirv/emit_spirv_undefined.cpp12
-rw-r--r--src/shader_recompiler/frontend/ir/basic_block.cpp64
-rw-r--r--src/shader_recompiler/frontend/ir/basic_block.h40
-rw-r--r--src/shader_recompiler/frontend/ir/condition.cpp14
-rw-r--r--src/shader_recompiler/frontend/ir/condition.h2
-rw-r--r--src/shader_recompiler/frontend/ir/function.h2
-rw-r--r--src/shader_recompiler/frontend/ir/ir_emitter.cpp43
-rw-r--r--src/shader_recompiler/frontend/ir/ir_emitter.h23
-rw-r--r--src/shader_recompiler/frontend/ir/microinstruction.cpp4
-rw-r--r--src/shader_recompiler/frontend/ir/opcodes.inc16
-rw-r--r--src/shader_recompiler/frontend/ir/structured_control_flow.cpp742
-rw-r--r--src/shader_recompiler/frontend/ir/structured_control_flow.h22
-rw-r--r--src/shader_recompiler/frontend/maxwell/control_flow.cpp426
-rw-r--r--src/shader_recompiler/frontend/maxwell/control_flow.h77
-rw-r--r--src/shader_recompiler/frontend/maxwell/location.h12
-rw-r--r--src/shader_recompiler/frontend/maxwell/program.cpp69
-rw-r--r--src/shader_recompiler/frontend/maxwell/program.h2
-rw-r--r--src/shader_recompiler/frontend/maxwell/termination_code.cpp86
-rw-r--r--src/shader_recompiler/frontend/maxwell/termination_code.h17
-rw-r--r--src/shader_recompiler/frontend/maxwell/translate/impl/integer_shift_left.cpp2
-rw-r--r--src/shader_recompiler/frontend/maxwell/translate/translate.cpp17
-rw-r--r--src/shader_recompiler/frontend/maxwell/translate/translate.h7
-rw-r--r--src/shader_recompiler/ir_opt/constant_propagation_pass.cpp50
-rw-r--r--src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp24
-rw-r--r--src/shader_recompiler/ir_opt/verification_pass.cpp4
-rw-r--r--src/shader_recompiler/main.cpp29
-rw-r--r--src/shader_recompiler/shader_info.h28
32 files changed, 1345 insertions, 589 deletions
diff --git a/src/shader_recompiler/CMakeLists.txt b/src/shader_recompiler/CMakeLists.txt
index 12fbcb37c..27fc79e21 100644
--- a/src/shader_recompiler/CMakeLists.txt
+++ b/src/shader_recompiler/CMakeLists.txt
@@ -36,6 +36,8 @@ add_executable(shader_recompiler
frontend/ir/program.cpp
frontend/ir/program.h
frontend/ir/reg.h
+ frontend/ir/structured_control_flow.cpp
+ frontend/ir/structured_control_flow.h
frontend/ir/type.cpp
frontend/ir/type.h
frontend/ir/value.cpp
@@ -51,8 +53,6 @@ add_executable(shader_recompiler
frontend/maxwell/opcodes.h
frontend/maxwell/program.cpp
frontend/maxwell/program.h
- frontend/maxwell/termination_code.cpp
- frontend/maxwell/termination_code.h
frontend/maxwell/translate/impl/common_encoding.h
frontend/maxwell/translate/impl/floating_point_add.cpp
frontend/maxwell/translate/impl/floating_point_conversion_integer.cpp
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv.cpp b/src/shader_recompiler/backend/spirv/emit_spirv.cpp
index 7c4269fad..5022b5159 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv.cpp
@@ -105,8 +105,26 @@ void EmitSPIRV::EmitInst(EmitContext& ctx, IR::Inst* inst) {
throw LogicError("Invalid opcode {}", inst->Opcode());
}
-void EmitSPIRV::EmitPhi(EmitContext&) {
- throw NotImplementedException("SPIR-V Instruction");
+static Id TypeId(const EmitContext& ctx, IR::Type type) {
+ switch (type) {
+ case IR::Type::U1:
+ return ctx.u1;
+ default:
+ throw NotImplementedException("Phi node type {}", type);
+ }
+}
+
+Id EmitSPIRV::EmitPhi(EmitContext& ctx, IR::Inst* inst) {
+ const size_t num_args{inst->NumArgs()};
+ boost::container::small_vector<Id, 64> operands;
+ operands.reserve(num_args * 2);
+ for (size_t index = 0; index < num_args; ++index) {
+ IR::Block* const phi_block{inst->PhiBlock(index)};
+ operands.push_back(ctx.Def(inst->Arg(index)));
+ operands.push_back(ctx.BlockLabel(phi_block));
+ }
+ const Id result_type{TypeId(ctx, inst->Arg(0).Type())};
+ return ctx.OpPhi(result_type, std::span(operands.data(), operands.size()));
}
void EmitSPIRV::EmitVoid(EmitContext&) {}
@@ -115,6 +133,29 @@ void EmitSPIRV::EmitIdentity(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
+// FIXME: Move to its own file
+void EmitSPIRV::EmitBranch(EmitContext& ctx, IR::Inst* inst) {
+ ctx.OpBranch(ctx.BlockLabel(inst->Arg(0).Label()));
+}
+
+void EmitSPIRV::EmitBranchConditional(EmitContext& ctx, IR::Inst* inst) {
+ ctx.OpBranchConditional(ctx.Def(inst->Arg(0)), ctx.BlockLabel(inst->Arg(1).Label()),
+ ctx.BlockLabel(inst->Arg(2).Label()));
+}
+
+void EmitSPIRV::EmitLoopMerge(EmitContext& ctx, IR::Inst* inst) {
+ ctx.OpLoopMerge(ctx.BlockLabel(inst->Arg(0).Label()), ctx.BlockLabel(inst->Arg(1).Label()),
+ spv::LoopControlMask::MaskNone);
+}
+
+void EmitSPIRV::EmitSelectionMerge(EmitContext& ctx, IR::Inst* inst) {
+ ctx.OpSelectionMerge(ctx.BlockLabel(inst->Arg(0).Label()), spv::SelectionControlMask::MaskNone);
+}
+
+void EmitSPIRV::EmitReturn(EmitContext& ctx) {
+ ctx.OpReturn();
+}
+
void EmitSPIRV::EmitGetZeroFromOp(EmitContext&) {
throw LogicError("Unreachable instruction");
}
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv.h b/src/shader_recompiler/backend/spirv/emit_spirv.h
index 3f4b68a7d..9aa83b5de 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv.h
+++ b/src/shader_recompiler/backend/spirv/emit_spirv.h
@@ -124,18 +124,20 @@ private:
void EmitInst(EmitContext& ctx, IR::Inst* inst);
// Microinstruction emitters
- void EmitPhi(EmitContext& ctx);
+ Id EmitPhi(EmitContext& ctx, IR::Inst* inst);
void EmitVoid(EmitContext& ctx);
void EmitIdentity(EmitContext& ctx);
void EmitBranch(EmitContext& ctx, IR::Inst* inst);
void EmitBranchConditional(EmitContext& ctx, IR::Inst* inst);
- void EmitExit(EmitContext& ctx);
+ void EmitLoopMerge(EmitContext& ctx, IR::Inst* inst);
+ void EmitSelectionMerge(EmitContext& ctx, IR::Inst* inst);
void EmitReturn(EmitContext& ctx);
- void EmitUnreachable(EmitContext& ctx);
void EmitGetRegister(EmitContext& ctx);
void EmitSetRegister(EmitContext& ctx);
void EmitGetPred(EmitContext& ctx);
void EmitSetPred(EmitContext& ctx);
+ void EmitSetGotoVariable(EmitContext& ctx);
+ void EmitGetGotoVariable(EmitContext& ctx);
Id EmitGetCbuf(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset);
void EmitGetAttribute(EmitContext& ctx);
void EmitSetAttribute(EmitContext& ctx);
@@ -151,11 +153,11 @@ private:
void EmitSetOFlag(EmitContext& ctx);
Id EmitWorkgroupId(EmitContext& ctx);
Id EmitLocalInvocationId(EmitContext& ctx);
- void EmitUndef1(EmitContext& ctx);
- void EmitUndef8(EmitContext& ctx);
- void EmitUndef16(EmitContext& ctx);
- void EmitUndef32(EmitContext& ctx);
- void EmitUndef64(EmitContext& ctx);
+ Id EmitUndefU1(EmitContext& ctx);
+ void EmitUndefU8(EmitContext& ctx);
+ void EmitUndefU16(EmitContext& ctx);
+ void EmitUndefU32(EmitContext& ctx);
+ void EmitUndefU64(EmitContext& ctx);
void EmitLoadGlobalU8(EmitContext& ctx);
void EmitLoadGlobalS8(EmitContext& ctx);
void EmitLoadGlobalU16(EmitContext& ctx);
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp b/src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp
index b121305ea..1eab739ed 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp
@@ -22,6 +22,14 @@ void EmitSPIRV::EmitSetPred(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
+void EmitSPIRV::EmitSetGotoVariable(EmitContext&) {
+ throw NotImplementedException("SPIR-V Instruction");
+}
+
+void EmitSPIRV::EmitGetGotoVariable(EmitContext&) {
+ throw NotImplementedException("SPIR-V Instruction");
+}
+
Id EmitSPIRV::EmitGetCbuf(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) {
if (!binding.IsImmediate()) {
throw NotImplementedException("Constant buffer indexing");
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv_control_flow.cpp b/src/shader_recompiler/backend/spirv/emit_spirv_control_flow.cpp
index 770fe113c..66ce6c8c5 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv_control_flow.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv_control_flow.cpp
@@ -3,28 +3,3 @@
// Refer to the license.txt file included.
#include "shader_recompiler/backend/spirv/emit_spirv.h"
-
-namespace Shader::Backend::SPIRV {
-
-void EmitSPIRV::EmitBranch(EmitContext& ctx, IR::Inst* inst) {
- ctx.OpBranch(ctx.BlockLabel(inst->Arg(0).Label()));
-}
-
-void EmitSPIRV::EmitBranchConditional(EmitContext& ctx, IR::Inst* inst) {
- ctx.OpBranchConditional(ctx.Def(inst->Arg(0)), ctx.BlockLabel(inst->Arg(1).Label()),
- ctx.BlockLabel(inst->Arg(2).Label()));
-}
-
-void EmitSPIRV::EmitExit(EmitContext& ctx) {
- ctx.OpReturn();
-}
-
-void EmitSPIRV::EmitReturn(EmitContext&) {
- throw NotImplementedException("SPIR-V Instruction");
-}
-
-void EmitSPIRV::EmitUnreachable(EmitContext&) {
- throw NotImplementedException("SPIR-V Instruction");
-}
-
-} // namespace Shader::Backend::SPIRV
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv_undefined.cpp b/src/shader_recompiler/backend/spirv/emit_spirv_undefined.cpp
index 3850b072c..859b60a95 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv_undefined.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv_undefined.cpp
@@ -6,23 +6,23 @@
namespace Shader::Backend::SPIRV {
-void EmitSPIRV::EmitUndef1(EmitContext&) {
- throw NotImplementedException("SPIR-V Instruction");
+Id EmitSPIRV::EmitUndefU1(EmitContext& ctx) {
+ return ctx.OpUndef(ctx.u1);
}
-void EmitSPIRV::EmitUndef8(EmitContext&) {
+void EmitSPIRV::EmitUndefU8(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
-void EmitSPIRV::EmitUndef16(EmitContext&) {
+void EmitSPIRV::EmitUndefU16(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
-void EmitSPIRV::EmitUndef32(EmitContext&) {
+void EmitSPIRV::EmitUndefU32(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
-void EmitSPIRV::EmitUndef64(EmitContext&) {
+void EmitSPIRV::EmitUndefU64(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
diff --git a/src/shader_recompiler/frontend/ir/basic_block.cpp b/src/shader_recompiler/frontend/ir/basic_block.cpp
index da33ff6f1..b5616f394 100644
--- a/src/shader_recompiler/frontend/ir/basic_block.cpp
+++ b/src/shader_recompiler/frontend/ir/basic_block.cpp
@@ -17,6 +17,8 @@ namespace Shader::IR {
Block::Block(ObjectPool<Inst>& inst_pool_, u32 begin, u32 end)
: inst_pool{&inst_pool_}, location_begin{begin}, location_end{end} {}
+Block::Block(ObjectPool<Inst>& inst_pool_) : Block{inst_pool_, 0, 0} {}
+
Block::~Block() = default;
void Block::AppendNewInst(Opcode op, std::initializer_list<Value> args) {
@@ -38,8 +40,25 @@ Block::iterator Block::PrependNewInst(iterator insertion_point, Opcode op,
return result_it;
}
-void Block::AddImmediatePredecessor(IR::Block* immediate_predecessor) {
- imm_predecessors.push_back(immediate_predecessor);
+void Block::SetBranches(Condition cond, Block* branch_true_, Block* branch_false_) {
+ branch_cond = cond;
+ branch_true = branch_true_;
+ branch_false = branch_false_;
+}
+
+void Block::SetBranch(Block* branch) {
+ branch_cond = Condition{true};
+ branch_true = branch;
+}
+
+void Block::SetReturn() {
+ branch_cond = Condition{true};
+ branch_true = nullptr;
+ branch_false = nullptr;
+}
+
+bool Block::IsVirtual() const noexcept {
+ return location_begin == location_end;
}
u32 Block::LocationBegin() const noexcept {
@@ -58,6 +77,12 @@ const Block::InstructionList& Block::Instructions() const noexcept {
return instructions;
}
+void Block::AddImmediatePredecessor(Block* block) {
+ if (std::ranges::find(imm_predecessors, block) == imm_predecessors.end()) {
+ imm_predecessors.push_back(block);
+ }
+}
+
std::span<IR::Block* const> Block::ImmediatePredecessors() const noexcept {
return imm_predecessors;
}
@@ -70,8 +95,17 @@ static std::string BlockToIndex(const std::map<const Block*, size_t>& block_to_i
return fmt::format("$<unknown block {:016x}>", reinterpret_cast<u64>(block));
}
+static size_t InstIndex(std::map<const Inst*, size_t>& inst_to_index, size_t& inst_index,
+ const Inst* inst) {
+ const auto [it, is_inserted]{inst_to_index.emplace(inst, inst_index + 1)};
+ if (is_inserted) {
+ ++inst_index;
+ }
+ return it->second;
+}
+
static std::string ArgToIndex(const std::map<const Block*, size_t>& block_to_index,
- const std::map<const Inst*, size_t>& inst_to_index,
+ std::map<const Inst*, size_t>& inst_to_index, size_t& inst_index,
const Value& arg) {
if (arg.IsEmpty()) {
return "<null>";
@@ -80,10 +114,7 @@ static std::string ArgToIndex(const std::map<const Block*, size_t>& block_to_ind
return BlockToIndex(block_to_index, arg.Label());
}
if (!arg.IsImmediate()) {
- if (const auto it{inst_to_index.find(arg.Inst())}; it != inst_to_index.end()) {
- return fmt::format("%{}", it->second);
- }
- return fmt::format("%<unknown inst {:016x}>", reinterpret_cast<u64>(arg.Inst()));
+ return fmt::format("%{}", InstIndex(inst_to_index, inst_index, arg.Inst()));
}
switch (arg.Type()) {
case Type::U1:
@@ -125,14 +156,14 @@ std::string DumpBlock(const Block& block, const std::map<const Block*, size_t>&
const Opcode op{inst.Opcode()};
ret += fmt::format("[{:016x}] ", reinterpret_cast<u64>(&inst));
if (TypeOf(op) != Type::Void) {
- ret += fmt::format("%{:<5} = {}", inst_index, op);
+ ret += fmt::format("%{:<5} = {}", InstIndex(inst_to_index, inst_index, &inst), op);
} else {
ret += fmt::format(" {}", op); // '%00000 = ' -> 1 + 5 + 3 = 9 spaces
}
- const size_t arg_count{NumArgsOf(op)};
+ const size_t arg_count{inst.NumArgs()};
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)};
+ const std::string arg_str{ArgToIndex(block_to_index, inst_to_index, inst_index, arg)};
ret += arg_index != 0 ? ", " : " ";
if (op == Opcode::Phi) {
ret += fmt::format("[ {}, {} ]", arg_index,
@@ -140,10 +171,12 @@ std::string DumpBlock(const Block& block, const std::map<const Block*, size_t>&
} else {
ret += arg_str;
}
- 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 (op != Opcode::Phi) {
+ 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) {
@@ -151,9 +184,6 @@ std::string DumpBlock(const Block& block, const std::map<const Block*, size_t>&
} else {
ret += '\n';
}
-
- inst_to_index.emplace(&inst, inst_index);
- ++inst_index;
}
return ret;
}
diff --git a/src/shader_recompiler/frontend/ir/basic_block.h b/src/shader_recompiler/frontend/ir/basic_block.h
index ec3ad6263..3205705e7 100644
--- a/src/shader_recompiler/frontend/ir/basic_block.h
+++ b/src/shader_recompiler/frontend/ir/basic_block.h
@@ -11,7 +11,9 @@
#include <boost/intrusive/list.hpp>
+#include "shader_recompiler/frontend/ir/condition.h"
#include "shader_recompiler/frontend/ir/microinstruction.h"
+#include "shader_recompiler/frontend/ir/value.h"
#include "shader_recompiler/object_pool.h"
namespace Shader::IR {
@@ -26,6 +28,7 @@ public:
using const_reverse_iterator = InstructionList::const_reverse_iterator;
explicit Block(ObjectPool<Inst>& inst_pool_, u32 begin, u32 end);
+ explicit Block(ObjectPool<Inst>& inst_pool_);
~Block();
Block(const Block&) = delete;
@@ -41,9 +44,15 @@ public:
iterator PrependNewInst(iterator insertion_point, Opcode op,
std::initializer_list<Value> args = {}, u64 flags = 0);
- /// Adds a new immediate predecessor to the basic block.
- void AddImmediatePredecessor(IR::Block* immediate_predecessor);
+ /// Set the branches to jump to when all instructions have executed.
+ void SetBranches(Condition cond, Block* branch_true, Block* branch_false);
+ /// Set the branch to unconditionally jump to when all instructions have executed.
+ void SetBranch(Block* branch);
+ /// Mark the block as a return block.
+ void SetReturn();
+ /// Returns true when the block does not implement any guest instructions directly.
+ [[nodiscard]] bool IsVirtual() const noexcept;
/// Gets the starting location of this basic block.
[[nodiscard]] u32 LocationBegin() const noexcept;
/// Gets the end location for this basic block.
@@ -54,8 +63,23 @@ public:
/// Gets an immutable reference to the instruction list for this basic block.
[[nodiscard]] const InstructionList& Instructions() const noexcept;
+ /// Adds a new immediate predecessor to this basic block.
+ void AddImmediatePredecessor(Block* block);
/// Gets an immutable span to the immediate predecessors.
- [[nodiscard]] std::span<IR::Block* const> ImmediatePredecessors() const noexcept;
+ [[nodiscard]] std::span<Block* const> ImmediatePredecessors() const noexcept;
+
+ [[nodiscard]] Condition BranchCondition() const noexcept {
+ return branch_cond;
+ }
+ [[nodiscard]] bool IsTerminationBlock() const noexcept {
+ return !branch_true && !branch_false;
+ }
+ [[nodiscard]] Block* TrueBranch() const noexcept {
+ return branch_true;
+ }
+ [[nodiscard]] Block* FalseBranch() const noexcept {
+ return branch_false;
+ }
[[nodiscard]] bool empty() const {
return instructions.empty();
@@ -129,10 +153,18 @@ private:
/// List of instructions in this block
InstructionList instructions;
+ /// Condition to choose the branch to take
+ Condition branch_cond{true};
+ /// Block to jump into when the branch condition evaluates as true
+ Block* branch_true{nullptr};
+ /// Block to jump into when the branch condition evaluates as false
+ Block* branch_false{nullptr};
/// Block immediate predecessors
- std::vector<IR::Block*> imm_predecessors;
+ std::vector<Block*> imm_predecessors;
};
+using BlockList = std::vector<Block*>;
+
[[nodiscard]] std::string DumpBlock(const Block& block);
[[nodiscard]] std::string DumpBlock(const Block& block,
diff --git a/src/shader_recompiler/frontend/ir/condition.cpp b/src/shader_recompiler/frontend/ir/condition.cpp
index edff35dc7..ec1659e2b 100644
--- a/src/shader_recompiler/frontend/ir/condition.cpp
+++ b/src/shader_recompiler/frontend/ir/condition.cpp
@@ -16,15 +16,13 @@ std::string NameOf(Condition condition) {
ret = fmt::to_string(condition.FlowTest());
}
const auto [pred, negated]{condition.Pred()};
- if (pred != Pred::PT || negated) {
- if (!ret.empty()) {
- ret += '&';
- }
- if (negated) {
- ret += '!';
- }
- ret += fmt::to_string(pred);
+ if (!ret.empty()) {
+ ret += '&';
}
+ if (negated) {
+ ret += '!';
+ }
+ ret += fmt::to_string(pred);
return ret;
}
diff --git a/src/shader_recompiler/frontend/ir/condition.h b/src/shader_recompiler/frontend/ir/condition.h
index 52737025c..16b4ae888 100644
--- a/src/shader_recompiler/frontend/ir/condition.h
+++ b/src/shader_recompiler/frontend/ir/condition.h
@@ -26,7 +26,7 @@ public:
explicit Condition(Pred pred_, bool pred_negated_ = false) noexcept
: Condition(FlowTest::T, pred_, pred_negated_) {}
- Condition(bool value) : Condition(Pred::PT, !value) {}
+ explicit Condition(bool value) : Condition(Pred::PT, !value) {}
auto operator<=>(const Condition&) const noexcept = default;
diff --git a/src/shader_recompiler/frontend/ir/function.h b/src/shader_recompiler/frontend/ir/function.h
index bba7d1d39..fd7d56419 100644
--- a/src/shader_recompiler/frontend/ir/function.h
+++ b/src/shader_recompiler/frontend/ir/function.h
@@ -11,7 +11,7 @@
namespace Shader::IR {
struct Function {
- boost::container::small_vector<Block*, 16> blocks;
+ BlockList blocks;
};
} // namespace Shader::IR
diff --git a/src/shader_recompiler/frontend/ir/ir_emitter.cpp b/src/shader_recompiler/frontend/ir/ir_emitter.cpp
index ada0be834..30932043f 100644
--- a/src/shader_recompiler/frontend/ir/ir_emitter.cpp
+++ b/src/shader_recompiler/frontend/ir/ir_emitter.cpp
@@ -44,24 +44,27 @@ F64 IREmitter::Imm64(f64 value) const {
return F64{Value{value}};
}
-void IREmitter::Branch(IR::Block* label) {
+void IREmitter::Branch(Block* label) {
+ label->AddImmediatePredecessor(block);
Inst(Opcode::Branch, label);
}
-void IREmitter::BranchConditional(const U1& cond, IR::Block* true_label, IR::Block* false_label) {
- Inst(Opcode::BranchConditional, cond, true_label, false_label);
+void IREmitter::BranchConditional(const U1& condition, Block* true_label, Block* false_label) {
+ true_label->AddImmediatePredecessor(block);
+ false_label->AddImmediatePredecessor(block);
+ Inst(Opcode::BranchConditional, condition, true_label, false_label);
}
-void IREmitter::Exit() {
- Inst(Opcode::Exit);
+void IREmitter::LoopMerge(Block* merge_block, Block* continue_target) {
+ Inst(Opcode::LoopMerge, merge_block, continue_target);
}
-void IREmitter::Return() {
- Inst(Opcode::Return);
+void IREmitter::SelectionMerge(Block* merge_block) {
+ Inst(Opcode::SelectionMerge, merge_block);
}
-void IREmitter::Unreachable() {
- Inst(Opcode::Unreachable);
+void IREmitter::Return() {
+ Inst(Opcode::Return);
}
U32 IREmitter::GetReg(IR::Reg reg) {
@@ -81,6 +84,14 @@ U1 IREmitter::GetPred(IR::Pred pred, bool is_negated) {
}
}
+U1 IREmitter::GetGotoVariable(u32 id) {
+ return Inst<U1>(Opcode::GetGotoVariable, id);
+}
+
+void IREmitter::SetGotoVariable(u32 id, const U1& value) {
+ Inst(Opcode::SetGotoVariable, id, value);
+}
+
void IREmitter::SetPred(IR::Pred pred, const U1& value) {
Inst(Opcode::SetPred, pred, value);
}
@@ -121,6 +132,20 @@ void IREmitter::SetOFlag(const U1& value) {
Inst(Opcode::SetOFlag, value);
}
+U1 IREmitter::Condition(IR::Condition cond) {
+ if (cond == IR::Condition{true}) {
+ return Imm1(true);
+ } else if (cond == IR::Condition{false}) {
+ return Imm1(false);
+ }
+ const FlowTest flow_test{cond.FlowTest()};
+ const auto [pred, is_negated]{cond.Pred()};
+ if (flow_test == FlowTest::T) {
+ return GetPred(pred, is_negated);
+ }
+ throw NotImplementedException("Condition {}", cond);
+}
+
F32 IREmitter::GetAttribute(IR::Attribute attribute) {
return Inst<F32>(Opcode::GetAttribute, attribute);
}
diff --git a/src/shader_recompiler/frontend/ir/ir_emitter.h b/src/shader_recompiler/frontend/ir/ir_emitter.h
index bfd9916cc..4decb46bc 100644
--- a/src/shader_recompiler/frontend/ir/ir_emitter.h
+++ b/src/shader_recompiler/frontend/ir/ir_emitter.h
@@ -16,11 +16,11 @@ namespace Shader::IR {
class IREmitter {
public:
- explicit IREmitter(Block& block_) : block{block_}, insertion_point{block.end()} {}
+ explicit IREmitter(Block& block_) : block{&block_}, insertion_point{block->end()} {}
explicit IREmitter(Block& block_, Block::iterator insertion_point_)
- : block{block_}, insertion_point{insertion_point_} {}
+ : block{&block_}, insertion_point{insertion_point_} {}
- Block& block;
+ Block* block;
[[nodiscard]] U1 Imm1(bool value) const;
[[nodiscard]] U8 Imm8(u8 value) const;
@@ -31,11 +31,11 @@ public:
[[nodiscard]] U64 Imm64(u64 value) const;
[[nodiscard]] F64 Imm64(f64 value) const;
- void Branch(IR::Block* label);
- void BranchConditional(const U1& cond, IR::Block* true_label, IR::Block* false_label);
- void Exit();
+ void Branch(Block* label);
+ void BranchConditional(const U1& condition, Block* true_label, Block* false_label);
+ void LoopMerge(Block* merge_block, Block* continue_target);
+ void SelectionMerge(Block* merge_block);
void Return();
- void Unreachable();
[[nodiscard]] U32 GetReg(IR::Reg reg);
void SetReg(IR::Reg reg, const U32& value);
@@ -43,6 +43,9 @@ public:
[[nodiscard]] U1 GetPred(IR::Pred pred, bool is_negated = false);
void SetPred(IR::Pred pred, const U1& value);
+ [[nodiscard]] U1 GetGotoVariable(u32 id);
+ void SetGotoVariable(u32 id, const U1& value);
+
[[nodiscard]] U32 GetCbuf(const U32& binding, const U32& byte_offset);
[[nodiscard]] U1 GetZFlag();
@@ -55,6 +58,8 @@ public:
void SetCFlag(const U1& value);
void SetOFlag(const U1& value);
+ [[nodiscard]] U1 Condition(IR::Condition cond);
+
[[nodiscard]] F32 GetAttribute(IR::Attribute attribute);
void SetAttribute(IR::Attribute attribute, const F32& value);
@@ -168,7 +173,7 @@ private:
template <typename T = Value, typename... Args>
T Inst(Opcode op, Args... args) {
- auto it{block.PrependNewInst(insertion_point, op, {Value{args}...})};
+ auto it{block->PrependNewInst(insertion_point, op, {Value{args}...})};
return T{Value{&*it}};
}
@@ -184,7 +189,7 @@ private:
T Inst(Opcode op, Flags<FlagType> flags, Args... args) {
u64 raw_flags{};
std::memcpy(&raw_flags, &flags.proxy, sizeof(flags.proxy));
- auto it{block.PrependNewInst(insertion_point, op, {Value{args}...}, raw_flags)};
+ auto it{block->PrependNewInst(insertion_point, op, {Value{args}...}, raw_flags)};
return T{Value{&*it}};
}
};
diff --git a/src/shader_recompiler/frontend/ir/microinstruction.cpp b/src/shader_recompiler/frontend/ir/microinstruction.cpp
index e7ca92039..b4ae371bd 100644
--- a/src/shader_recompiler/frontend/ir/microinstruction.cpp
+++ b/src/shader_recompiler/frontend/ir/microinstruction.cpp
@@ -51,9 +51,9 @@ bool Inst::MayHaveSideEffects() const noexcept {
switch (op) {
case Opcode::Branch:
case Opcode::BranchConditional:
- case Opcode::Exit:
+ case Opcode::LoopMerge:
+ case Opcode::SelectionMerge:
case Opcode::Return:
- case Opcode::Unreachable:
case Opcode::SetAttribute:
case Opcode::SetAttributeIndexed:
case Opcode::WriteGlobalU8:
diff --git a/src/shader_recompiler/frontend/ir/opcodes.inc b/src/shader_recompiler/frontend/ir/opcodes.inc
index 5dc65f2df..ede5e20c2 100644
--- a/src/shader_recompiler/frontend/ir/opcodes.inc
+++ b/src/shader_recompiler/frontend/ir/opcodes.inc
@@ -10,15 +10,17 @@ OPCODE(Identity, Opaque, Opaq
// Control flow
OPCODE(Branch, Void, Label, )
OPCODE(BranchConditional, Void, U1, Label, Label, )
-OPCODE(Exit, Void, )
+OPCODE(LoopMerge, Void, Label, Label, )
+OPCODE(SelectionMerge, Void, Label, )
OPCODE(Return, Void, )
-OPCODE(Unreachable, Void, )
// Context getters/setters
OPCODE(GetRegister, U32, Reg, )
OPCODE(SetRegister, Void, Reg, U32, )
OPCODE(GetPred, U1, Pred, )
OPCODE(SetPred, Void, Pred, U1, )
+OPCODE(GetGotoVariable, U1, U32, )
+OPCODE(SetGotoVariable, Void, U32, U1, )
OPCODE(GetCbuf, U32, U32, U32, )
OPCODE(GetAttribute, U32, Attribute, )
OPCODE(SetAttribute, Void, Attribute, U32, )
@@ -36,11 +38,11 @@ OPCODE(WorkgroupId, U32x3,
OPCODE(LocalInvocationId, U32x3, )
// Undefined
-OPCODE(Undef1, U1, )
-OPCODE(Undef8, U8, )
-OPCODE(Undef16, U16, )
-OPCODE(Undef32, U32, )
-OPCODE(Undef64, U64, )
+OPCODE(UndefU1, U1, )
+OPCODE(UndefU8, U8, )
+OPCODE(UndefU16, U16, )
+OPCODE(UndefU32, U32, )
+OPCODE(UndefU64, U64, )
// Memory operations
OPCODE(LoadGlobalU8, U32, U64, )
diff --git a/src/shader_recompiler/frontend/ir/structured_control_flow.cpp b/src/shader_recompiler/frontend/ir/structured_control_flow.cpp
new file mode 100644
index 000000000..2e9ce2525
--- /dev/null
+++ b/src/shader_recompiler/frontend/ir/structured_control_flow.cpp
@@ -0,0 +1,742 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <algorithm>
+#include <memory>
+#include <ranges>
+#include <string>
+#include <unordered_map>
+#include <utility>
+#include <vector>
+
+#include <fmt/format.h>
+
+#include <boost/intrusive/list.hpp>
+
+#include "shader_recompiler/frontend/ir/basic_block.h"
+#include "shader_recompiler/frontend/ir/ir_emitter.h"
+#include "shader_recompiler/object_pool.h"
+
+namespace Shader::IR {
+namespace {
+struct Statement;
+
+// Use normal_link because we are not guaranteed to destroy the tree in order
+using ListBaseHook =
+ boost::intrusive::list_base_hook<boost::intrusive::link_mode<boost::intrusive::normal_link>>;
+
+using Tree = boost::intrusive::list<Statement,
+ // Allow using Statement without a definition
+ boost::intrusive::base_hook<ListBaseHook>,
+ // Avoid linear complexity on splice, size is never called
+ boost::intrusive::constant_time_size<false>>;
+using Node = Tree::iterator;
+using ConstNode = Tree::const_iterator;
+
+enum class StatementType {
+ Code,
+ Goto,
+ Label,
+ If,
+ Loop,
+ Break,
+ Return,
+ Function,
+ Identity,
+ Not,
+ Or,
+ SetVariable,
+ Variable,
+};
+
+bool HasChildren(StatementType type) {
+ switch (type) {
+ case StatementType::If:
+ case StatementType::Loop:
+ case StatementType::Function:
+ return true;
+ default:
+ return false;
+ }
+}
+
+struct Goto {};
+struct Label {};
+struct If {};
+struct Loop {};
+struct Break {};
+struct Return {};
+struct FunctionTag {};
+struct Identity {};
+struct Not {};
+struct Or {};
+struct SetVariable {};
+struct Variable {};
+
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable : 26495) // Always initialize a member variable, expected in Statement
+#endif
+struct Statement : ListBaseHook {
+ Statement(Block* code_, Statement* up_) : code{code_}, up{up_}, type{StatementType::Code} {}
+ Statement(Goto, Statement* cond_, Node label_, Statement* up_)
+ : label{label_}, cond{cond_}, up{up_}, type{StatementType::Goto} {}
+ Statement(Label, u32 id_, Statement* up_) : id{id_}, up{up_}, type{StatementType::Label} {}
+ Statement(If, Statement* cond_, Tree&& children_, Statement* up_)
+ : children{std::move(children_)}, cond{cond_}, up{up_}, type{StatementType::If} {}
+ Statement(Loop, Statement* cond_, Tree&& children_, Statement* up_)
+ : children{std::move(children_)}, cond{cond_}, up{up_}, type{StatementType::Loop} {}
+ Statement(Break, Statement* cond_, Statement* up_)
+ : cond{cond_}, up{up_}, type{StatementType::Break} {}
+ Statement(Return) : type{StatementType::Return} {}
+ Statement(FunctionTag) : children{}, type{StatementType::Function} {}
+ Statement(Identity, Condition cond_) : guest_cond{cond_}, type{StatementType::Identity} {}
+ Statement(Not, Statement* op_) : op{op_}, type{StatementType::Not} {}
+ Statement(Or, Statement* op_a_, Statement* op_b_)
+ : op_a{op_a_}, op_b{op_b_}, type{StatementType::Or} {}
+ Statement(SetVariable, u32 id_, Statement* op_, Statement* up_)
+ : op{op_}, id{id_}, up{up_}, type{StatementType::SetVariable} {}
+ Statement(Variable, u32 id_) : id{id_}, type{StatementType::Variable} {}
+
+ ~Statement() {
+ if (HasChildren(type)) {
+ std::destroy_at(&children);
+ }
+ }
+
+ union {
+ Block* code;
+ Node label;
+ Tree children;
+ Condition guest_cond;
+ Statement* op;
+ Statement* op_a;
+ };
+ union {
+ Statement* cond;
+ Statement* op_b;
+ u32 id;
+ };
+ Statement* up{};
+ StatementType type;
+};
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif
+
+std::string DumpExpr(const Statement* stmt) {
+ switch (stmt->type) {
+ case StatementType::Identity:
+ return fmt::format("{}", stmt->guest_cond);
+ case StatementType::Not:
+ return fmt::format("!{}", DumpExpr(stmt->op));
+ case StatementType::Or:
+ return fmt::format("{} || {}", DumpExpr(stmt->op_a), DumpExpr(stmt->op_b));
+ case StatementType::Variable:
+ return fmt::format("goto_L{}", stmt->id);
+ default:
+ return "<invalid type>";
+ }
+}
+
+std::string DumpTree(const Tree& tree, u32 indentation = 0) {
+ std::string ret;
+ std::string indent(indentation, ' ');
+ for (auto stmt = tree.begin(); stmt != tree.end(); ++stmt) {
+ switch (stmt->type) {
+ case StatementType::Code:
+ ret += fmt::format("{} Block {:04x};\n", indent, stmt->code->LocationBegin());
+ break;
+ case StatementType::Goto:
+ ret += fmt::format("{} if ({}) goto L{};\n", indent, DumpExpr(stmt->cond),
+ stmt->label->id);
+ break;
+ case StatementType::Label:
+ ret += fmt::format("{}L{}:\n", indent, stmt->id);
+ break;
+ case StatementType::If:
+ ret += fmt::format("{} if ({}) {{\n", indent, DumpExpr(stmt->cond));
+ ret += DumpTree(stmt->children, indentation + 4);
+ ret += fmt::format("{} }}\n", indent);
+ break;
+ case StatementType::Loop:
+ ret += fmt::format("{} do {{\n", indent);
+ ret += DumpTree(stmt->children, indentation + 4);
+ ret += fmt::format("{} }} while ({});\n", indent, DumpExpr(stmt->cond));
+ break;
+ case StatementType::Break:
+ ret += fmt::format("{} if ({}) break;\n", indent, DumpExpr(stmt->cond));
+ break;
+ case StatementType::Return:
+ ret += fmt::format("{} return;\n", indent);
+ break;
+ case StatementType::SetVariable:
+ ret += fmt::format("{} goto_L{} = {};\n", indent, stmt->id, DumpExpr(stmt->op));
+ break;
+ case StatementType::Function:
+ case StatementType::Identity:
+ case StatementType::Not:
+ case StatementType::Or:
+ case StatementType::Variable:
+ throw LogicError("Statement can't be printed");
+ }
+ }
+ return ret;
+}
+
+bool HasNode(const Tree& tree, ConstNode stmt) {
+ const auto end{tree.end()};
+ for (auto it = tree.begin(); it != end; ++it) {
+ if (it == stmt || (HasChildren(it->type) && HasNode(it->children, stmt))) {
+ return true;
+ }
+ }
+ return false;
+}
+
+Node FindStatementWithLabel(Tree& tree, ConstNode goto_stmt) {
+ const ConstNode label_stmt{goto_stmt->label};
+ const ConstNode end{tree.end()};
+ for (auto it = tree.begin(); it != end; ++it) {
+ if (it == label_stmt || (HasChildren(it->type) && HasNode(it->children, label_stmt))) {
+ return it;
+ }
+ }
+ throw LogicError("Lift label not in tree");
+}
+
+void SanitizeNoBreaks(const Tree& tree) {
+ if (std::ranges::find(tree, StatementType::Break, &Statement::type) != tree.end()) {
+ throw NotImplementedException("Capturing statement with break nodes");
+ }
+}
+
+size_t Level(Node stmt) {
+ size_t level{0};
+ Statement* node{stmt->up};
+ while (node) {
+ ++level;
+ node = node->up;
+ }
+ return level;
+}
+
+bool IsDirectlyRelated(Node goto_stmt, Node label_stmt) {
+ const size_t goto_level{Level(goto_stmt)};
+ const size_t label_level{Level(label_stmt)};
+ size_t min_level;
+ size_t max_level;
+ Node min;
+ Node max;
+ if (label_level < goto_level) {
+ min_level = label_level;
+ max_level = goto_level;
+ min = label_stmt;
+ max = goto_stmt;
+ } else { // goto_level < label_level
+ min_level = goto_level;
+ max_level = label_level;
+ min = goto_stmt;
+ max = label_stmt;
+ }
+ while (max_level > min_level) {
+ --max_level;
+ max = max->up;
+ }
+ return min->up == max->up;
+}
+
+bool IsIndirectlyRelated(Node goto_stmt, Node label_stmt) {
+ return goto_stmt->up != label_stmt->up && !IsDirectlyRelated(goto_stmt, label_stmt);
+}
+
+bool SearchNode(const Tree& tree, ConstNode stmt, size_t& offset) {
+ ++offset;
+
+ const auto end = tree.end();
+ for (ConstNode it = tree.begin(); it != end; ++it) {
+ ++offset;
+ if (stmt == it) {
+ return true;
+ }
+ if (HasChildren(it->type) && SearchNode(it->children, stmt, offset)) {
+ return true;
+ }
+ }
+ return false;
+}
+
+class GotoPass {
+public:
+ explicit GotoPass(std::span<Block* const> blocks, ObjectPool<Statement, 64>& stmt_pool)
+ : pool{stmt_pool} {
+ std::vector gotos{BuildUnorderedTreeGetGotos(blocks)};
+ fmt::print(stdout, "BEFORE\n{}\n", DumpTree(root_stmt.children));
+ for (const Node& goto_stmt : gotos | std::views::reverse) {
+ RemoveGoto(goto_stmt);
+ }
+ fmt::print(stdout, "AFTER\n{}\n", DumpTree(root_stmt.children));
+ }
+
+ Statement& RootStatement() noexcept {
+ return root_stmt;
+ }
+
+private:
+ void RemoveGoto(Node goto_stmt) {
+ // Force goto_stmt and label_stmt to be directly related
+ const Node label_stmt{goto_stmt->label};
+ if (IsIndirectlyRelated(goto_stmt, label_stmt)) {
+ // Move goto_stmt out using outward-movement transformation until it becomes
+ // directly related to label_stmt
+ while (!IsDirectlyRelated(goto_stmt, label_stmt)) {
+ goto_stmt = MoveOutward(goto_stmt);
+ }
+ }
+ // Force goto_stmt and label_stmt to be siblings
+ if (IsDirectlyRelated(goto_stmt, label_stmt)) {
+ const size_t label_level{Level(label_stmt)};
+ size_t goto_level{Level(goto_stmt)};
+ if (goto_level > label_level) {
+ // Move goto_stmt out of its level using outward-movement transformations
+ while (goto_level > label_level) {
+ goto_stmt = MoveOutward(goto_stmt);
+ --goto_level;
+ }
+ } else { // Level(goto_stmt) < Level(label_stmt)
+ if (Offset(goto_stmt) > Offset(label_stmt)) {
+ // Lift goto_stmt to above stmt containing label_stmt using goto-lifting
+ // transformations
+ goto_stmt = Lift(goto_stmt);
+ }
+ // Move goto_stmt into label_stmt's level using inward-movement transformation
+ while (goto_level < label_level) {
+ goto_stmt = MoveInward(goto_stmt);
+ ++goto_level;
+ }
+ }
+ }
+ // TODO: Remove this
+ Node it{goto_stmt};
+ bool sibling{false};
+ do {
+ sibling |= it == label_stmt;
+ --it;
+ } while (it != goto_stmt->up->children.begin());
+ while (it != goto_stmt->up->children.end()) {
+ sibling |= it == label_stmt;
+ ++it;
+ }
+ if (!sibling) {
+ throw LogicError("Not siblings");
+ }
+
+ // goto_stmt and label_stmt are guaranteed to be siblings, eliminate
+ if (std::next(goto_stmt) == label_stmt) {
+ // Simply eliminate the goto if the label is next to it
+ goto_stmt->up->children.erase(goto_stmt);
+ } else if (Offset(goto_stmt) < Offset(label_stmt)) {
+ // Eliminate goto_stmt with a conditional
+ EliminateAsConditional(goto_stmt, label_stmt);
+ } else {
+ // Eliminate goto_stmt with a loop
+ EliminateAsLoop(goto_stmt, label_stmt);
+ }
+ }
+
+ std::vector<Node> BuildUnorderedTreeGetGotos(std::span<Block* const> blocks) {
+ // Assume all blocks have two branches
+ std::vector<Node> gotos;
+ gotos.reserve(blocks.size() * 2);
+
+ const std::unordered_map labels_map{BuildLabels(blocks)};
+ Tree& root{root_stmt.children};
+ auto insert_point{root.begin()};
+ for (Block* const block : blocks) {
+ ++insert_point; // Skip label
+ ++insert_point; // Skip set variable
+ root.insert(insert_point, *pool.Create(block, &root_stmt));
+
+ if (block->IsTerminationBlock()) {
+ root.insert(insert_point, *pool.Create(Return{}));
+ continue;
+ }
+ const Condition cond{block->BranchCondition()};
+ Statement* const true_cond{pool.Create(Identity{}, Condition{true})};
+ if (cond == Condition{true} || cond == Condition{false}) {
+ const bool is_true{cond == Condition{true}};
+ const Block* const branch{is_true ? block->TrueBranch() : block->FalseBranch()};
+ const Node label{labels_map.at(branch)};
+ Statement* const goto_stmt{pool.Create(Goto{}, true_cond, label, &root_stmt)};
+ gotos.push_back(root.insert(insert_point, *goto_stmt));
+ } else {
+ Statement* const ident_cond{pool.Create(Identity{}, cond)};
+ const Node true_label{labels_map.at(block->TrueBranch())};
+ const Node false_label{labels_map.at(block->FalseBranch())};
+ Statement* goto_true{pool.Create(Goto{}, ident_cond, true_label, &root_stmt)};
+ Statement* goto_false{pool.Create(Goto{}, true_cond, false_label, &root_stmt)};
+ gotos.push_back(root.insert(insert_point, *goto_true));
+ gotos.push_back(root.insert(insert_point, *goto_false));
+ }
+ }
+ return gotos;
+ }
+
+ std::unordered_map<const Block*, Node> BuildLabels(std::span<Block* const> blocks) {
+ // TODO: Consider storing labels intrusively inside the block
+ std::unordered_map<const Block*, Node> labels_map;
+ Tree& root{root_stmt.children};
+ u32 label_id{0};
+ for (const Block* const block : blocks) {
+ Statement* const label{pool.Create(Label{}, label_id, &root_stmt)};
+ labels_map.emplace(block, root.insert(root.end(), *label));
+ Statement* const false_stmt{pool.Create(Identity{}, Condition{false})};
+ root.push_back(*pool.Create(SetVariable{}, label_id, false_stmt, &root_stmt));
+ ++label_id;
+ }
+ return labels_map;
+ }
+
+ void UpdateTreeUp(Statement* tree) {
+ for (Statement& stmt : tree->children) {
+ stmt.up = tree;
+ }
+ }
+
+ void EliminateAsConditional(Node goto_stmt, Node label_stmt) {
+ Tree& body{goto_stmt->up->children};
+ Tree if_body;
+ if_body.splice(if_body.begin(), body, std::next(goto_stmt), label_stmt);
+ Statement* const cond{pool.Create(Not{}, goto_stmt->cond)};
+ Statement* const if_stmt{pool.Create(If{}, cond, std::move(if_body), goto_stmt->up)};
+ UpdateTreeUp(if_stmt);
+ body.insert(goto_stmt, *if_stmt);
+ body.erase(goto_stmt);
+ }
+
+ void EliminateAsLoop(Node goto_stmt, Node label_stmt) {
+ Tree& body{goto_stmt->up->children};
+ Tree loop_body;
+ loop_body.splice(loop_body.begin(), body, label_stmt, goto_stmt);
+ Statement* const cond{goto_stmt->cond};
+ Statement* const loop{pool.Create(Loop{}, cond, std::move(loop_body), goto_stmt->up)};
+ UpdateTreeUp(loop);
+ body.insert(goto_stmt, *loop);
+ body.erase(goto_stmt);
+ }
+
+ [[nodiscard]] Node MoveOutward(Node goto_stmt) {
+ switch (goto_stmt->up->type) {
+ case StatementType::If:
+ return MoveOutwardIf(goto_stmt);
+ case StatementType::Loop:
+ return MoveOutwardLoop(goto_stmt);
+ default:
+ throw LogicError("Invalid outward movement");
+ }
+ }
+
+ [[nodiscard]] Node MoveInward(Node goto_stmt) {
+ Statement* const parent{goto_stmt->up};
+ Tree& body{parent->children};
+ const Node label_nested_stmt{FindStatementWithLabel(body, goto_stmt)};
+ const Node label{goto_stmt->label};
+ const u32 label_id{label->id};
+
+ Statement* const goto_cond{goto_stmt->cond};
+ Statement* const set_var{pool.Create(SetVariable{}, label_id, goto_cond, parent)};
+ body.insert(goto_stmt, *set_var);
+
+ Tree if_body;
+ if_body.splice(if_body.begin(), body, std::next(goto_stmt), label_nested_stmt);
+ Statement* const variable{pool.Create(Variable{}, label_id)};
+ Statement* const neg_var{pool.Create(Not{}, variable)};
+ if (!if_body.empty()) {
+ Statement* const if_stmt{pool.Create(If{}, neg_var, std::move(if_body), parent)};
+ UpdateTreeUp(if_stmt);
+ body.insert(goto_stmt, *if_stmt);
+ }
+ body.erase(goto_stmt);
+
+ // Update nested if condition
+ switch (label_nested_stmt->type) {
+ case StatementType::If:
+ label_nested_stmt->cond = pool.Create(Or{}, neg_var, label_nested_stmt->cond);
+ break;
+ case StatementType::Loop:
+ break;
+ default:
+ throw LogicError("Invalid inward movement");
+ }
+ Tree& nested_tree{label_nested_stmt->children};
+ Statement* const new_goto{pool.Create(Goto{}, variable, label, &*label_nested_stmt)};
+ return nested_tree.insert(nested_tree.begin(), *new_goto);
+ }
+
+ [[nodiscard]] Node Lift(Node goto_stmt) {
+ Statement* const parent{goto_stmt->up};
+ Tree& body{parent->children};
+ const Node label{goto_stmt->label};
+ const u32 label_id{label->id};
+ const Node label_nested_stmt{FindStatementWithLabel(body, goto_stmt)};
+ const auto type{label_nested_stmt->type};
+
+ Tree loop_body;
+ loop_body.splice(loop_body.begin(), body, label_nested_stmt, goto_stmt);
+ SanitizeNoBreaks(loop_body);
+ Statement* const variable{pool.Create(Variable{}, label_id)};
+ Statement* const loop_stmt{pool.Create(Loop{}, variable, std::move(loop_body), parent)};
+ UpdateTreeUp(loop_stmt);
+ const Node loop_node{body.insert(goto_stmt, *loop_stmt)};
+
+ Statement* const new_goto{pool.Create(Goto{}, variable, label, loop_stmt)};
+ loop_stmt->children.push_front(*new_goto);
+ const Node new_goto_node{loop_stmt->children.begin()};
+
+ Statement* const set_var{pool.Create(SetVariable{}, label_id, goto_stmt->cond, loop_stmt)};
+ loop_stmt->children.push_back(*set_var);
+
+ body.erase(goto_stmt);
+ return new_goto_node;
+ }
+
+ Node MoveOutwardIf(Node goto_stmt) {
+ const Node parent{Tree::s_iterator_to(*goto_stmt->up)};
+ Tree& body{parent->children};
+ const u32 label_id{goto_stmt->label->id};
+ Statement* const goto_cond{goto_stmt->cond};
+ Statement* const set_goto_var{pool.Create(SetVariable{}, label_id, goto_cond, &*parent)};
+ body.insert(goto_stmt, *set_goto_var);
+
+ Tree if_body;
+ if_body.splice(if_body.begin(), body, std::next(goto_stmt), body.end());
+ if_body.pop_front();
+ Statement* const cond{pool.Create(Variable{}, label_id)};
+ Statement* const neg_cond{pool.Create(Not{}, cond)};
+ Statement* const if_stmt{pool.Create(If{}, neg_cond, std::move(if_body), &*parent)};
+ UpdateTreeUp(if_stmt);
+ body.insert(goto_stmt, *if_stmt);
+
+ body.erase(goto_stmt);
+
+ Statement* const new_cond{pool.Create(Variable{}, label_id)};
+ Statement* const new_goto{pool.Create(Goto{}, new_cond, goto_stmt->label, parent->up)};
+ Tree& parent_tree{parent->up->children};
+ return parent_tree.insert(std::next(parent), *new_goto);
+ }
+
+ Node MoveOutwardLoop(Node goto_stmt) {
+ Statement* const parent{goto_stmt->up};
+ Tree& body{parent->children};
+ const u32 label_id{goto_stmt->label->id};
+ Statement* const goto_cond{goto_stmt->cond};
+ Statement* const set_goto_var{pool.Create(SetVariable{}, label_id, goto_cond, parent)};
+ Statement* const cond{pool.Create(Variable{}, label_id)};
+ Statement* const break_stmt{pool.Create(Break{}, cond, parent)};
+ body.insert(goto_stmt, *set_goto_var);
+ body.insert(goto_stmt, *break_stmt);
+ body.erase(goto_stmt);
+
+ const Node loop{Tree::s_iterator_to(*goto_stmt->up)};
+ Statement* const new_goto_cond{pool.Create(Variable{}, label_id)};
+ Statement* const new_goto{pool.Create(Goto{}, new_goto_cond, goto_stmt->label, loop->up)};
+ Tree& parent_tree{loop->up->children};
+ return parent_tree.insert(std::next(loop), *new_goto);
+ }
+
+ size_t Offset(ConstNode stmt) const {
+ size_t offset{0};
+ if (!SearchNode(root_stmt.children, stmt, offset)) {
+ fmt::print(stdout, "{}\n", DumpTree(root_stmt.children));
+ throw LogicError("Node not found in tree");
+ }
+ return offset;
+ }
+
+ ObjectPool<Statement, 64>& pool;
+ Statement root_stmt{FunctionTag{}};
+};
+
+Block* TryFindForwardBlock(const Statement& stmt) {
+ const Tree& tree{stmt.up->children};
+ const ConstNode end{tree.cend()};
+ ConstNode forward_node{std::next(Tree::s_iterator_to(stmt))};
+ while (forward_node != end && !HasChildren(forward_node->type)) {
+ if (forward_node->type == StatementType::Code) {
+ return forward_node->code;
+ }
+ ++forward_node;
+ }
+ return nullptr;
+}
+
+[[nodiscard]] U1 VisitExpr(IREmitter& ir, const Statement& stmt) {
+ switch (stmt.type) {
+ case StatementType::Identity:
+ return ir.Condition(stmt.guest_cond);
+ case StatementType::Not:
+ return ir.LogicalNot(U1{VisitExpr(ir, *stmt.op)});
+ case StatementType::Or:
+ return ir.LogicalOr(VisitExpr(ir, *stmt.op_a), VisitExpr(ir, *stmt.op_b));
+ case StatementType::Variable:
+ return ir.GetGotoVariable(stmt.id);
+ default:
+ throw NotImplementedException("Statement type {}", stmt.type);
+ }
+}
+
+class TranslatePass {
+public:
+ TranslatePass(ObjectPool<Inst>& inst_pool_, ObjectPool<Block>& block_pool_,
+ ObjectPool<Statement, 64>& stmt_pool_, Statement& root_stmt,
+ const std::function<void(IR::Block*)>& func_, BlockList& block_list_)
+ : stmt_pool{stmt_pool_}, inst_pool{inst_pool_}, block_pool{block_pool_}, func{func_},
+ block_list{block_list_} {
+ Visit(root_stmt, nullptr, nullptr);
+ }
+
+private:
+ void Visit(Statement& parent, Block* continue_block, Block* break_block) {
+ Tree& tree{parent.children};
+ Block* current_block{nullptr};
+
+ for (auto it = tree.begin(); it != tree.end(); ++it) {
+ Statement& stmt{*it};
+ switch (stmt.type) {
+ case StatementType::Label:
+ // Labels can be ignored
+ break;
+ case StatementType::Code: {
+ if (current_block && current_block != stmt.code) {
+ IREmitter ir{*current_block};
+ ir.Branch(stmt.code);
+ }
+ current_block = stmt.code;
+ func(stmt.code);
+ block_list.push_back(stmt.code);
+ break;
+ }
+ case StatementType::SetVariable: {
+ if (!current_block) {
+ current_block = MergeBlock(parent, stmt);
+ }
+ IREmitter ir{*current_block};
+ ir.SetGotoVariable(stmt.id, VisitExpr(ir, *stmt.op));
+ break;
+ }
+ case StatementType::If: {
+ if (!current_block) {
+ current_block = block_pool.Create(inst_pool);
+ block_list.push_back(current_block);
+ }
+ Block* const merge_block{MergeBlock(parent, stmt)};
+
+ // Visit children
+ const size_t first_block_index{block_list.size()};
+ Visit(stmt, merge_block, break_block);
+
+ // Implement if header block
+ Block* const first_if_block{block_list.at(first_block_index)};
+ IREmitter ir{*current_block};
+ const U1 cond{VisitExpr(ir, *stmt.cond)};
+ ir.SelectionMerge(merge_block);
+ ir.BranchConditional(cond, first_if_block, merge_block);
+
+ current_block = merge_block;
+ break;
+ }
+ case StatementType::Loop: {
+ Block* const loop_header_block{block_pool.Create(inst_pool)};
+ if (current_block) {
+ IREmitter{*current_block}.Branch(loop_header_block);
+ }
+ block_list.push_back(loop_header_block);
+
+ Block* const new_continue_block{block_pool.Create(inst_pool)};
+ Block* const merge_block{MergeBlock(parent, stmt)};
+
+ // Visit children
+ const size_t first_block_index{block_list.size()};
+ Visit(stmt, new_continue_block, merge_block);
+
+ // The continue block is located at the end of the loop
+ block_list.push_back(new_continue_block);
+
+ // Implement loop header block
+ Block* const first_loop_block{block_list.at(first_block_index)};
+ IREmitter ir{*loop_header_block};
+ ir.LoopMerge(merge_block, new_continue_block);
+ ir.Branch(first_loop_block);
+
+ // Implement continue block
+ IREmitter continue_ir{*new_continue_block};
+ const U1 continue_cond{VisitExpr(continue_ir, *stmt.cond)};
+ continue_ir.BranchConditional(continue_cond, ir.block, merge_block);
+
+ current_block = merge_block;
+ break;
+ }
+ case StatementType::Break: {
+ if (!current_block) {
+ current_block = block_pool.Create(inst_pool);
+ block_list.push_back(current_block);
+ }
+ Block* const skip_block{MergeBlock(parent, stmt)};
+
+ IREmitter ir{*current_block};
+ ir.BranchConditional(VisitExpr(ir, *stmt.cond), break_block, skip_block);
+
+ current_block = skip_block;
+ break;
+ }
+ case StatementType::Return: {
+ if (!current_block) {
+ current_block = block_pool.Create(inst_pool);
+ block_list.push_back(current_block);
+ }
+ IREmitter{*current_block}.Return();
+ current_block = nullptr;
+ break;
+ }
+ default:
+ throw NotImplementedException("Statement type {}", stmt.type);
+ }
+ }
+ if (current_block && continue_block) {
+ IREmitter ir{*current_block};
+ ir.Branch(continue_block);
+ }
+ }
+
+ Block* MergeBlock(Statement& parent, Statement& stmt) {
+ if (Block* const block{TryFindForwardBlock(stmt)}) {
+ return block;
+ }
+ // Create a merge block we can visit later
+ Block* const block{block_pool.Create(inst_pool)};
+ Statement* const merge_stmt{stmt_pool.Create(block, &parent)};
+ parent.children.insert(std::next(Tree::s_iterator_to(stmt)), *merge_stmt);
+ return block;
+ }
+
+ ObjectPool<Statement, 64>& stmt_pool;
+ ObjectPool<Inst>& inst_pool;
+ ObjectPool<Block>& block_pool;
+ const std::function<void(IR::Block*)>& func;
+ BlockList& block_list;
+};
+} // Anonymous namespace
+
+BlockList VisitAST(ObjectPool<Inst>& inst_pool, ObjectPool<Block>& block_pool,
+ std::span<Block* const> unordered_blocks,
+ const std::function<void(Block*)>& func) {
+ ObjectPool<Statement, 64> stmt_pool;
+ GotoPass goto_pass{unordered_blocks, stmt_pool};
+ BlockList block_list;
+ TranslatePass translate_pass{inst_pool, block_pool, stmt_pool, goto_pass.RootStatement(),
+ func, block_list};
+ return block_list;
+}
+
+} // namespace Shader::IR
diff --git a/src/shader_recompiler/frontend/ir/structured_control_flow.h b/src/shader_recompiler/frontend/ir/structured_control_flow.h
new file mode 100644
index 000000000..a574c24f7
--- /dev/null
+++ b/src/shader_recompiler/frontend/ir/structured_control_flow.h
@@ -0,0 +1,22 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <functional>
+#include <span>
+
+#include <boost/intrusive/list.hpp>
+
+#include "shader_recompiler/frontend/ir/basic_block.h"
+#include "shader_recompiler/frontend/ir/microinstruction.h"
+#include "shader_recompiler/object_pool.h"
+
+namespace Shader::IR {
+
+[[nodiscard]] BlockList VisitAST(ObjectPool<Inst>& inst_pool, ObjectPool<Block>& block_pool,
+ std::span<Block* const> unordered_blocks,
+ const std::function<void(Block*)>& func);
+
+} // namespace Shader::IR
diff --git a/src/shader_recompiler/frontend/maxwell/control_flow.cpp b/src/shader_recompiler/frontend/maxwell/control_flow.cpp
index 21ee98137..e766b555b 100644
--- a/src/shader_recompiler/frontend/maxwell/control_flow.cpp
+++ b/src/shader_recompiler/frontend/maxwell/control_flow.cpp
@@ -17,38 +17,49 @@
#include "shader_recompiler/frontend/maxwell/location.h"
namespace Shader::Maxwell::Flow {
+namespace {
+struct Compare {
+ bool operator()(const Block& lhs, Location rhs) const noexcept {
+ return lhs.begin < rhs;
+ }
+
+ bool operator()(Location lhs, const Block& rhs) const noexcept {
+ return lhs < rhs.begin;
+ }
+
+ bool operator()(const Block& lhs, const Block& rhs) const noexcept {
+ return lhs.begin < rhs.begin;
+ }
+};
+} // Anonymous namespace
static u32 BranchOffset(Location pc, Instruction inst) {
return pc.Offset() + inst.branch.Offset() + 8;
}
-static std::array<Block, 2> Split(Block&& block, Location pc, BlockId new_id) {
- if (pc <= block.begin || pc >= block.end) {
+static void Split(Block* old_block, Block* new_block, Location pc) {
+ if (pc <= old_block->begin || pc >= old_block->end) {
throw InvalidArgument("Invalid address to split={}", pc);
}
- return {
- Block{
- .begin{block.begin},
- .end{pc},
- .end_class{EndClass::Branch},
- .id{block.id},
- .stack{block.stack},
- .cond{true},
- .branch_true{new_id},
- .branch_false{UNREACHABLE_BLOCK_ID},
- .imm_predecessors{},
- },
- Block{
- .begin{pc},
- .end{block.end},
- .end_class{block.end_class},
- .id{new_id},
- .stack{std::move(block.stack)},
- .cond{block.cond},
- .branch_true{block.branch_true},
- .branch_false{block.branch_false},
- .imm_predecessors{},
- },
+ *new_block = Block{
+ .begin{pc},
+ .end{old_block->end},
+ .end_class{old_block->end_class},
+ .stack{old_block->stack},
+ .cond{old_block->cond},
+ .branch_true{old_block->branch_true},
+ .branch_false{old_block->branch_false},
+ .ir{nullptr},
+ };
+ *old_block = Block{
+ .begin{old_block->begin},
+ .end{pc},
+ .end_class{EndClass::Branch},
+ .stack{std::move(old_block->stack)},
+ .cond{IR::Condition{true}},
+ .branch_true{new_block},
+ .branch_false{nullptr},
+ .ir{nullptr},
};
}
@@ -112,7 +123,7 @@ static bool HasFlowTest(Opcode opcode) {
static std::string NameOf(const Block& block) {
if (block.begin.IsVirtual()) {
- return fmt::format("\"Virtual {}\"", block.id);
+ return fmt::format("\"Virtual {}\"", block.begin);
} else {
return fmt::format("\"{}\"", block.begin);
}
@@ -158,126 +169,23 @@ bool Block::Contains(Location pc) const noexcept {
Function::Function(Location start_address)
: entrypoint{start_address}, labels{{
.address{start_address},
- .block_id{0},
+ .block{nullptr},
.stack{},
}} {}
-void Function::BuildBlocksMap() {
- const size_t num_blocks{NumBlocks()};
- blocks_map.resize(num_blocks);
- for (size_t block_index = 0; block_index < num_blocks; ++block_index) {
- Block& block{blocks_data[block_index]};
- blocks_map[block.id] = &block;
- }
-}
-
-void Function::BuildImmediatePredecessors() {
- for (const Block& block : blocks_data) {
- if (block.branch_true != UNREACHABLE_BLOCK_ID) {
- blocks_map[block.branch_true]->imm_predecessors.push_back(block.id);
- }
- if (block.branch_false != UNREACHABLE_BLOCK_ID) {
- blocks_map[block.branch_false]->imm_predecessors.push_back(block.id);
- }
- }
-}
-
-void Function::BuildPostOrder() {
- boost::container::small_vector<BlockId, 0x110> block_stack;
- post_order_map.resize(NumBlocks());
-
- Block& first_block{blocks_data[blocks.front()]};
- first_block.post_order_visited = true;
- block_stack.push_back(first_block.id);
-
- const auto visit_branch = [&](BlockId block_id, BlockId branch_id) {
- if (branch_id == UNREACHABLE_BLOCK_ID) {
- return false;
- }
- if (blocks_map[branch_id]->post_order_visited) {
- return false;
- }
- blocks_map[branch_id]->post_order_visited = true;
-
- // Calling push_back twice is faster than insert on msvc
- block_stack.push_back(block_id);
- block_stack.push_back(branch_id);
- return true;
- };
- while (!block_stack.empty()) {
- const Block* const block{blocks_map[block_stack.back()]};
- block_stack.pop_back();
-
- if (!visit_branch(block->id, block->branch_true) &&
- !visit_branch(block->id, block->branch_false)) {
- post_order_map[block->id] = static_cast<u32>(post_order_blocks.size());
- post_order_blocks.push_back(block->id);
- }
- }
-}
-
-void Function::BuildImmediateDominators() {
- auto transform_block_id{std::views::transform([this](BlockId id) { return blocks_map[id]; })};
- auto reverse_order_but_first{std::views::reverse | std::views::drop(1) | transform_block_id};
- auto has_idom{std::views::filter([](Block* block) { return block->imm_dominator; })};
- auto intersect{[this](Block* finger1, Block* finger2) {
- while (finger1 != finger2) {
- while (post_order_map[finger1->id] < post_order_map[finger2->id]) {
- finger1 = finger1->imm_dominator;
- }
- while (post_order_map[finger2->id] < post_order_map[finger1->id]) {
- finger2 = finger2->imm_dominator;
- }
- }
- return finger1;
- }};
- for (Block& block : blocks_data) {
- block.imm_dominator = nullptr;
- }
- Block* const start_block{&blocks_data[blocks.front()]};
- start_block->imm_dominator = start_block;
-
- bool changed{true};
- while (changed) {
- changed = false;
- for (Block* const block : post_order_blocks | reverse_order_but_first) {
- Block* new_idom{};
- for (Block* predecessor : block->imm_predecessors | transform_block_id | has_idom) {
- new_idom = new_idom ? intersect(predecessor, new_idom) : predecessor;
- }
- changed |= block->imm_dominator != new_idom;
- block->imm_dominator = new_idom;
- }
- }
-}
-
-void Function::BuildDominanceFrontier() {
- auto transform_block_id{std::views::transform([this](BlockId id) { return blocks_map[id]; })};
- auto has_enough_predecessors{[](Block& block) { return block.imm_predecessors.size() >= 2; }};
- for (Block& block : blocks_data | std::views::filter(has_enough_predecessors)) {
- for (Block* current : block.imm_predecessors | transform_block_id) {
- while (current != block.imm_dominator) {
- current->dominance_frontiers.push_back(current->id);
- current = current->imm_dominator;
- }
- }
- }
-}
-
-CFG::CFG(Environment& env_, Location start_address) : env{env_} {
- VisitFunctions(start_address);
-
- for (Function& function : functions) {
- function.BuildBlocksMap();
- function.BuildImmediatePredecessors();
- function.BuildPostOrder();
- function.BuildImmediateDominators();
- function.BuildDominanceFrontier();
- }
-}
-
-void CFG::VisitFunctions(Location start_address) {
+CFG::CFG(Environment& env_, ObjectPool<Block>& block_pool_, Location start_address)
+ : env{env_}, block_pool{block_pool_} {
functions.emplace_back(start_address);
+ functions.back().labels.back().block = block_pool.Create(Block{
+ .begin{start_address},
+ .end{start_address},
+ .end_class{EndClass::Branch},
+ .stack{},
+ .cond{IR::Condition{true}},
+ .branch_true{nullptr},
+ .branch_false{nullptr},
+ .ir{nullptr},
+ });
for (FunctionId function_id = 0; function_id < functions.size(); ++function_id) {
while (!functions[function_id].labels.empty()) {
Function& function{functions[function_id]};
@@ -294,35 +202,16 @@ void CFG::AnalyzeLabel(FunctionId function_id, Label& label) {
return;
}
// Try to find the next block
- Function* function{&functions[function_id]};
+ Function* const function{&functions[function_id]};
Location pc{label.address};
- const auto next{std::upper_bound(function->blocks.begin(), function->blocks.end(), pc,
- [function](Location pc, u32 block_index) {
- return pc < function->blocks_data[block_index].begin;
- })};
- const auto next_index{std::distance(function->blocks.begin(), next)};
- const bool is_last{next == function->blocks.end()};
- Location next_pc;
- BlockId next_id{UNREACHABLE_BLOCK_ID};
- if (!is_last) {
- next_pc = function->blocks_data[*next].begin;
- next_id = function->blocks_data[*next].id;
- }
+ const auto next_it{function->blocks.upper_bound(pc, Compare{})};
+ const bool is_last{next_it == function->blocks.end()};
+ Block* const next{is_last ? nullptr : &*next_it};
// Insert before the next block
- Block block{
- .begin{pc},
- .end{pc},
- .end_class{EndClass::Branch},
- .id{label.block_id},
- .stack{std::move(label.stack)},
- .cond{true},
- .branch_true{UNREACHABLE_BLOCK_ID},
- .branch_false{UNREACHABLE_BLOCK_ID},
- .imm_predecessors{},
- };
+ Block* const block{label.block};
// Analyze instructions until it reaches an already visited block or there's a branch
bool is_branch{false};
- while (is_last || pc < next_pc) {
+ while (!next || pc < next->begin) {
is_branch = AnalyzeInst(block, function_id, pc) == AnalysisState::Branch;
if (is_branch) {
break;
@@ -332,43 +221,36 @@ void CFG::AnalyzeLabel(FunctionId function_id, Label& label) {
if (!is_branch) {
// If the block finished without a branch,
// it means that the next instruction is already visited, jump to it
- block.end = pc;
- block.cond = true;
- block.branch_true = next_id;
- block.branch_false = UNREACHABLE_BLOCK_ID;
+ block->end = pc;
+ block->cond = IR::Condition{true};
+ block->branch_true = next;
+ block->branch_false = nullptr;
}
// Function's pointer might be invalid, resolve it again
- function = &functions[function_id];
- const u32 new_block_index = static_cast<u32>(function->blocks_data.size());
- function->blocks.insert(function->blocks.begin() + next_index, new_block_index);
- function->blocks_data.push_back(std::move(block));
+ // Insert the new block
+ functions[function_id].blocks.insert(*block);
}
bool CFG::InspectVisitedBlocks(FunctionId function_id, const Label& label) {
const Location pc{label.address};
Function& function{functions[function_id]};
- const auto it{std::ranges::find_if(function.blocks, [&function, pc](u32 block_index) {
- return function.blocks_data[block_index].Contains(pc);
- })};
+ const auto it{
+ std::ranges::find_if(function.blocks, [pc](auto& block) { return block.Contains(pc); })};
if (it == function.blocks.end()) {
// Address has not been visited
return false;
}
- Block& block{function.blocks_data[*it]};
- if (block.begin == pc) {
- throw LogicError("Dangling branch");
- }
- const u32 first_index{*it};
- const u32 second_index{static_cast<u32>(function.blocks_data.size())};
- const std::array new_indices{first_index, second_index};
- std::array split_blocks{Split(std::move(block), pc, label.block_id)};
- function.blocks_data[*it] = std::move(split_blocks[0]);
- function.blocks_data.push_back(std::move(split_blocks[1]));
- function.blocks.insert(function.blocks.erase(it), new_indices.begin(), new_indices.end());
+ Block* const visited_block{&*it};
+ if (visited_block->begin == pc) {
+ throw LogicError("Dangling block");
+ }
+ Block* const new_block{label.block};
+ Split(visited_block, new_block, pc);
+ function.blocks.insert(it, *new_block);
return true;
}
-CFG::AnalysisState CFG::AnalyzeInst(Block& block, FunctionId function_id, Location pc) {
+CFG::AnalysisState CFG::AnalyzeInst(Block* block, FunctionId function_id, Location pc) {
const Instruction inst{env.ReadInstruction(pc.Offset())};
const Opcode opcode{Decode(inst.raw)};
switch (opcode) {
@@ -390,12 +272,12 @@ CFG::AnalysisState CFG::AnalyzeInst(Block& block, FunctionId function_id, Locati
AnalyzeBRX(block, pc, inst, IsAbsoluteJump(opcode));
break;
case Opcode::RET:
- block.end_class = EndClass::Return;
+ block->end_class = EndClass::Return;
break;
default:
break;
}
- block.end = pc;
+ block->end = pc;
return AnalysisState::Branch;
case Opcode::BRK:
case Opcode::CONT:
@@ -404,9 +286,9 @@ CFG::AnalysisState CFG::AnalyzeInst(Block& block, FunctionId function_id, Locati
if (!AnalyzeBranch(block, function_id, pc, inst, opcode)) {
return AnalysisState::Continue;
}
- const auto [stack_pc, new_stack]{block.stack.Pop(OpcodeToken(opcode))};
- block.branch_true = AddLabel(block, new_stack, stack_pc, function_id);
- block.end = pc;
+ const auto [stack_pc, new_stack]{block->stack.Pop(OpcodeToken(opcode))};
+ block->branch_true = AddLabel(block, new_stack, stack_pc, function_id);
+ block->end = pc;
return AnalysisState::Branch;
}
case Opcode::PBK:
@@ -414,7 +296,7 @@ CFG::AnalysisState CFG::AnalyzeInst(Block& block, FunctionId function_id, Locati
case Opcode::PEXIT:
case Opcode::PLONGJMP:
case Opcode::SSY:
- block.stack.Push(OpcodeToken(opcode), BranchOffset(pc, inst));
+ block->stack.Push(OpcodeToken(opcode), BranchOffset(pc, inst));
return AnalysisState::Continue;
case Opcode::EXIT:
return AnalyzeEXIT(block, function_id, pc, inst);
@@ -444,51 +326,51 @@ CFG::AnalysisState CFG::AnalyzeInst(Block& block, FunctionId function_id, Locati
return AnalysisState::Branch;
}
-void CFG::AnalyzeCondInst(Block& block, FunctionId function_id, Location pc,
+void CFG::AnalyzeCondInst(Block* block, FunctionId function_id, Location pc,
EndClass insn_end_class, IR::Condition cond) {
- if (block.begin != pc) {
+ if (block->begin != pc) {
// If the block doesn't start in the conditional instruction
// mark it as a label to visit it later
- block.end = pc;
- block.cond = true;
- block.branch_true = AddLabel(block, block.stack, pc, function_id);
- block.branch_false = UNREACHABLE_BLOCK_ID;
+ block->end = pc;
+ block->cond = IR::Condition{true};
+ block->branch_true = AddLabel(block, block->stack, pc, function_id);
+ block->branch_false = nullptr;
return;
}
- // Impersonate the visited block with a virtual block
- // Jump from this virtual to the real conditional instruction and the next instruction
- Function& function{functions[function_id]};
- const BlockId conditional_block_id{++function.current_block_id};
- function.blocks.push_back(static_cast<u32>(function.blocks_data.size()));
- Block& virtual_block{function.blocks_data.emplace_back(Block{
- .begin{}, // Virtual block
- .end{},
+ // Create a virtual block and a conditional block
+ Block* const conditional_block{block_pool.Create()};
+ Block virtual_block{
+ .begin{block->begin.Virtual()},
+ .end{block->begin.Virtual()},
.end_class{EndClass::Branch},
- .id{block.id}, // Impersonating
- .stack{block.stack},
+ .stack{block->stack},
.cond{cond},
- .branch_true{conditional_block_id},
- .branch_false{UNREACHABLE_BLOCK_ID},
- .imm_predecessors{},
- })};
- // Set the end properties of the conditional instruction and give it a new identity
- Block& conditional_block{block};
- conditional_block.end = pc;
- conditional_block.end_class = insn_end_class;
- conditional_block.id = conditional_block_id;
+ .branch_true{conditional_block},
+ .branch_false{nullptr},
+ .ir{nullptr},
+ };
+ // Save the contents of the visited block in the conditional block
+ *conditional_block = std::move(*block);
+ // Impersonate the visited block with a virtual block
+ *block = std::move(virtual_block);
+ // Set the end properties of the conditional instruction
+ conditional_block->end = pc;
+ conditional_block->end_class = insn_end_class;
// Add a label to the instruction after the conditional instruction
- const BlockId endif_block_id{AddLabel(conditional_block, block.stack, pc + 1, function_id)};
+ Block* const endif_block{AddLabel(conditional_block, block->stack, pc + 1, function_id)};
// Branch to the next instruction from the virtual block
- virtual_block.branch_false = endif_block_id;
+ block->branch_false = endif_block;
// And branch to it from the conditional instruction if it is a branch
if (insn_end_class == EndClass::Branch) {
- conditional_block.cond = true;
- conditional_block.branch_true = endif_block_id;
- conditional_block.branch_false = UNREACHABLE_BLOCK_ID;
+ conditional_block->cond = IR::Condition{true};
+ conditional_block->branch_true = endif_block;
+ conditional_block->branch_false = nullptr;
}
+ // Finally insert the condition block into the list of blocks
+ functions[function_id].blocks.insert(*conditional_block);
}
-bool CFG::AnalyzeBranch(Block& block, FunctionId function_id, Location pc, Instruction inst,
+bool CFG::AnalyzeBranch(Block* block, FunctionId function_id, Location pc, Instruction inst,
Opcode opcode) {
if (inst.branch.is_cbuf) {
throw NotImplementedException("Branch with constant buffer offset");
@@ -500,21 +382,21 @@ bool CFG::AnalyzeBranch(Block& block, FunctionId function_id, Location pc, Instr
const bool has_flow_test{HasFlowTest(opcode)};
const IR::FlowTest flow_test{has_flow_test ? inst.branch.flow_test.Value() : IR::FlowTest::T};
if (pred != Predicate{true} || flow_test != IR::FlowTest::T) {
- block.cond = IR::Condition(flow_test, static_cast<IR::Pred>(pred.index), pred.negated);
- block.branch_false = AddLabel(block, block.stack, pc + 1, function_id);
+ block->cond = IR::Condition(flow_test, static_cast<IR::Pred>(pred.index), pred.negated);
+ block->branch_false = AddLabel(block, block->stack, pc + 1, function_id);
} else {
- block.cond = true;
+ block->cond = IR::Condition{true};
}
return true;
}
-void CFG::AnalyzeBRA(Block& block, FunctionId function_id, Location pc, Instruction inst,
+void CFG::AnalyzeBRA(Block* block, FunctionId function_id, Location pc, Instruction inst,
bool is_absolute) {
const Location bra_pc{is_absolute ? inst.branch.Absolute() : BranchOffset(pc, inst)};
- block.branch_true = AddLabel(block, block.stack, bra_pc, function_id);
+ block->branch_true = AddLabel(block, block->stack, bra_pc, function_id);
}
-void CFG::AnalyzeBRX(Block&, Location, Instruction, bool is_absolute) {
+void CFG::AnalyzeBRX(Block*, Location, Instruction, bool is_absolute) {
throw NotImplementedException("{}", is_absolute ? "JMX" : "BRX");
}
@@ -528,7 +410,7 @@ void CFG::AnalyzeCAL(Location pc, Instruction inst, bool is_absolute) {
}
}
-CFG::AnalysisState CFG::AnalyzeEXIT(Block& block, FunctionId function_id, Location pc,
+CFG::AnalysisState CFG::AnalyzeEXIT(Block* block, FunctionId function_id, Location pc,
Instruction inst) {
const IR::FlowTest flow_test{inst.branch.flow_test};
const Predicate pred{inst.Pred()};
@@ -537,41 +419,52 @@ CFG::AnalysisState CFG::AnalyzeEXIT(Block& block, FunctionId function_id, Locati
return AnalysisState::Continue;
}
if (pred != Predicate{true} || flow_test != IR::FlowTest::T) {
- if (block.stack.Peek(Token::PEXIT).has_value()) {
+ if (block->stack.Peek(Token::PEXIT).has_value()) {
throw NotImplementedException("Conditional EXIT with PEXIT token");
}
const IR::Condition cond{flow_test, static_cast<IR::Pred>(pred.index), pred.negated};
AnalyzeCondInst(block, function_id, pc, EndClass::Exit, cond);
return AnalysisState::Branch;
}
- if (const std::optional<Location> exit_pc{block.stack.Peek(Token::PEXIT)}) {
- const Stack popped_stack{block.stack.Remove(Token::PEXIT)};
- block.cond = true;
- block.branch_true = AddLabel(block, popped_stack, *exit_pc, function_id);
- block.branch_false = UNREACHABLE_BLOCK_ID;
+ if (const std::optional<Location> exit_pc{block->stack.Peek(Token::PEXIT)}) {
+ const Stack popped_stack{block->stack.Remove(Token::PEXIT)};
+ block->cond = IR::Condition{true};
+ block->branch_true = AddLabel(block, popped_stack, *exit_pc, function_id);
+ block->branch_false = nullptr;
return AnalysisState::Branch;
}
- block.end = pc;
- block.end_class = EndClass::Exit;
+ block->end = pc;
+ block->end_class = EndClass::Exit;
return AnalysisState::Branch;
}
-BlockId CFG::AddLabel(const Block& block, Stack stack, Location pc, FunctionId function_id) {
+Block* CFG::AddLabel(Block* block, Stack stack, Location pc, FunctionId function_id) {
Function& function{functions[function_id]};
- if (block.begin == pc) {
- return block.id;
+ if (block->begin == pc) {
+ // Jumps to itself
+ return block;
}
- const auto target{std::ranges::find(function.blocks_data, pc, &Block::begin)};
- if (target != function.blocks_data.end()) {
- return target->id;
+ if (const auto it{function.blocks.find(pc, Compare{})}; it != function.blocks.end()) {
+ // Block already exists and it has been visited
+ return &*it;
}
- const BlockId block_id{++function.current_block_id};
+ // TODO: FIX DANGLING BLOCKS
+ Block* const new_block{block_pool.Create(Block{
+ .begin{pc},
+ .end{pc},
+ .end_class{EndClass::Branch},
+ .stack{stack},
+ .cond{IR::Condition{true}},
+ .branch_true{nullptr},
+ .branch_false{nullptr},
+ .ir{nullptr},
+ })};
function.labels.push_back(Label{
.address{pc},
- .block_id{block_id},
+ .block{new_block},
.stack{std::move(stack)},
});
- return block_id;
+ return new_block;
}
std::string CFG::Dot() const {
@@ -581,18 +474,12 @@ std::string CFG::Dot() const {
for (const Function& function : functions) {
dot += fmt::format("\tsubgraph cluster_{} {{\n", function.entrypoint);
dot += fmt::format("\t\tnode [style=filled];\n");
- for (const u32 block_index : function.blocks) {
- const Block& block{function.blocks_data[block_index]};
+ for (const Block& block : function.blocks) {
const std::string name{NameOf(block)};
- const auto add_branch = [&](BlockId branch_id, bool add_label) {
- const auto it{std::ranges::find(function.blocks_data, branch_id, &Block::id)};
- dot += fmt::format("\t\t{}->", name);
- if (it == function.blocks_data.end()) {
- dot += fmt::format("\"Unknown label {}\"", branch_id);
- } else {
- dot += NameOf(*it);
- };
- if (add_label && block.cond != true && block.cond != false) {
+ const auto add_branch = [&](Block* branch, bool add_label) {
+ dot += fmt::format("\t\t{}->{}", name, NameOf(*branch));
+ if (add_label && block.cond != IR::Condition{true} &&
+ block.cond != IR::Condition{false}) {
dot += fmt::format(" [label=\"{}\"]", block.cond);
}
dot += '\n';
@@ -600,10 +487,10 @@ std::string CFG::Dot() const {
dot += fmt::format("\t\t{};\n", name);
switch (block.end_class) {
case EndClass::Branch:
- if (block.cond != false) {
+ if (block.cond != IR::Condition{false}) {
add_branch(block.branch_true, true);
}
- if (block.cond != true) {
+ if (block.cond != IR::Condition{true}) {
add_branch(block.branch_false, false);
}
break;
@@ -619,12 +506,6 @@ std::string CFG::Dot() const {
node_uid);
++node_uid;
break;
- case EndClass::Unreachable:
- dot += fmt::format("\t\t{}->N{};\n", name, node_uid);
- dot += fmt::format(
- "\t\tN{} [label=\"Unreachable\"][shape=square][style=stripped];\n", node_uid);
- ++node_uid;
- break;
}
}
if (function.entrypoint == 8) {
@@ -635,10 +516,11 @@ std::string CFG::Dot() const {
dot += "\t}\n";
}
if (!functions.empty()) {
- if (functions.front().blocks.empty()) {
+ auto& function{functions.front()};
+ if (function.blocks.empty()) {
dot += "Start;\n";
} else {
- dot += fmt::format("\tStart -> {};\n", NameOf(functions.front().blocks_data.front()));
+ dot += fmt::format("\tStart -> {};\n", NameOf(*function.blocks.begin()));
}
dot += fmt::format("\tStart [shape=diamond];\n");
}
diff --git a/src/shader_recompiler/frontend/maxwell/control_flow.h b/src/shader_recompiler/frontend/maxwell/control_flow.h
index 49b369282..8179787b8 100644
--- a/src/shader_recompiler/frontend/maxwell/control_flow.h
+++ b/src/shader_recompiler/frontend/maxwell/control_flow.h
@@ -11,25 +11,27 @@
#include <vector>
#include <boost/container/small_vector.hpp>
+#include <boost/intrusive/set.hpp>
#include "shader_recompiler/environment.h"
#include "shader_recompiler/frontend/ir/condition.h"
#include "shader_recompiler/frontend/maxwell/instruction.h"
#include "shader_recompiler/frontend/maxwell/location.h"
#include "shader_recompiler/frontend/maxwell/opcodes.h"
+#include "shader_recompiler/object_pool.h"
+
+namespace Shader::IR {
+class Block;
+}
namespace Shader::Maxwell::Flow {
-using BlockId = u32;
using FunctionId = size_t;
-constexpr BlockId UNREACHABLE_BLOCK_ID{static_cast<u32>(-1)};
-
enum class EndClass {
Branch,
Exit,
Return,
- Unreachable,
};
enum class Token {
@@ -59,58 +61,37 @@ private:
boost::container::small_vector<StackEntry, 3> entries;
};
-struct Block {
+struct Block : boost::intrusive::set_base_hook<
+ // Normal link is ~2.5% faster compared to safe link
+ boost::intrusive::link_mode<boost::intrusive::normal_link>> {
[[nodiscard]] bool Contains(Location pc) const noexcept;
+ bool operator<(const Block& rhs) const noexcept {
+ return begin < rhs.begin;
+ }
+
Location begin;
Location end;
EndClass end_class;
- BlockId id;
Stack stack;
IR::Condition cond;
- BlockId branch_true;
- BlockId branch_false;
- boost::container::small_vector<BlockId, 4> imm_predecessors;
- boost::container::small_vector<BlockId, 8> dominance_frontiers;
- union {
- bool post_order_visited{false};
- Block* imm_dominator;
- };
+ Block* branch_true;
+ Block* branch_false;
+ IR::Block* ir;
};
struct Label {
Location address;
- BlockId block_id;
+ Block* block;
Stack stack;
};
struct Function {
Function(Location start_address);
- void BuildBlocksMap();
-
- void BuildImmediatePredecessors();
-
- void BuildPostOrder();
-
- void BuildImmediateDominators();
-
- void BuildDominanceFrontier();
-
- [[nodiscard]] size_t NumBlocks() const noexcept {
- return static_cast<size_t>(current_block_id) + 1;
- }
-
Location entrypoint;
- BlockId current_block_id{0};
boost::container::small_vector<Label, 16> labels;
- boost::container::small_vector<u32, 0x130> blocks;
- boost::container::small_vector<Block, 0x130> blocks_data;
- // Translates from BlockId to block index
- boost::container::small_vector<Block*, 0x130> blocks_map;
-
- boost::container::small_vector<u32, 0x130> post_order_blocks;
- boost::container::small_vector<BlockId, 0x130> post_order_map;
+ boost::intrusive::set<Block> blocks;
};
class CFG {
@@ -120,7 +101,7 @@ class CFG {
};
public:
- explicit CFG(Environment& env, Location start_address);
+ explicit CFG(Environment& env, ObjectPool<Block>& block_pool, Location start_address);
CFG& operator=(const CFG&) = delete;
CFG(const CFG&) = delete;
@@ -133,35 +114,37 @@ public:
[[nodiscard]] std::span<const Function> Functions() const noexcept {
return std::span(functions.data(), functions.size());
}
+ [[nodiscard]] std::span<Function> Functions() noexcept {
+ return std::span(functions.data(), functions.size());
+ }
private:
- void VisitFunctions(Location start_address);
-
void AnalyzeLabel(FunctionId function_id, Label& label);
/// Inspect already visited blocks.
/// Return true when the block has already been visited
bool InspectVisitedBlocks(FunctionId function_id, const Label& label);
- AnalysisState AnalyzeInst(Block& block, FunctionId function_id, Location pc);
+ AnalysisState AnalyzeInst(Block* block, FunctionId function_id, Location pc);
- void AnalyzeCondInst(Block& block, FunctionId function_id, Location pc, EndClass insn_end_class,
+ void AnalyzeCondInst(Block* block, FunctionId function_id, Location pc, EndClass insn_end_class,
IR::Condition cond);
/// Return true when the branch instruction is confirmed to be a branch
- bool AnalyzeBranch(Block& block, FunctionId function_id, Location pc, Instruction inst,
+ bool AnalyzeBranch(Block* block, FunctionId function_id, Location pc, Instruction inst,
Opcode opcode);
- void AnalyzeBRA(Block& block, FunctionId function_id, Location pc, Instruction inst,
+ void AnalyzeBRA(Block* block, FunctionId function_id, Location pc, Instruction inst,
bool is_absolute);
- void AnalyzeBRX(Block& block, Location pc, Instruction inst, bool is_absolute);
+ void AnalyzeBRX(Block* block, Location pc, Instruction inst, bool is_absolute);
void AnalyzeCAL(Location pc, Instruction inst, bool is_absolute);
- AnalysisState AnalyzeEXIT(Block& block, FunctionId function_id, Location pc, Instruction inst);
+ AnalysisState AnalyzeEXIT(Block* block, FunctionId function_id, Location pc, Instruction inst);
/// Return the branch target block id
- BlockId AddLabel(const Block& block, Stack stack, Location pc, FunctionId function_id);
+ Block* AddLabel(Block* block, Stack stack, Location pc, FunctionId function_id);
Environment& env;
+ ObjectPool<Block>& block_pool;
boost::container::small_vector<Function, 1> functions;
FunctionId current_function_id{0};
};
diff --git a/src/shader_recompiler/frontend/maxwell/location.h b/src/shader_recompiler/frontend/maxwell/location.h
index 66b51a19e..26d29eae2 100644
--- a/src/shader_recompiler/frontend/maxwell/location.h
+++ b/src/shader_recompiler/frontend/maxwell/location.h
@@ -15,7 +15,7 @@
namespace Shader::Maxwell {
class Location {
- static constexpr u32 VIRTUAL_OFFSET{std::numeric_limits<u32>::max()};
+ static constexpr u32 VIRTUAL_BIAS{4};
public:
constexpr Location() = default;
@@ -27,12 +27,18 @@ public:
Align();
}
+ constexpr Location Virtual() const noexcept {
+ Location virtual_location;
+ virtual_location.offset = offset - VIRTUAL_BIAS;
+ return virtual_location;
+ }
+
[[nodiscard]] constexpr u32 Offset() const noexcept {
return offset;
}
[[nodiscard]] constexpr bool IsVirtual() const {
- return offset == VIRTUAL_OFFSET;
+ return offset % 8 == VIRTUAL_BIAS;
}
constexpr auto operator<=>(const Location&) const noexcept = default;
@@ -89,7 +95,7 @@ private:
offset -= 8 + (offset % 32 == 8 ? 8 : 0);
}
- u32 offset{VIRTUAL_OFFSET};
+ u32 offset{0xcccccccc};
};
} // namespace Shader::Maxwell
diff --git a/src/shader_recompiler/frontend/maxwell/program.cpp b/src/shader_recompiler/frontend/maxwell/program.cpp
index 8cdd20804..9fa912ed8 100644
--- a/src/shader_recompiler/frontend/maxwell/program.cpp
+++ b/src/shader_recompiler/frontend/maxwell/program.cpp
@@ -4,57 +4,58 @@
#include <algorithm>
#include <memory>
+#include <vector>
#include "shader_recompiler/frontend/ir/basic_block.h"
+#include "shader_recompiler/frontend/ir/structured_control_flow.h"
#include "shader_recompiler/frontend/maxwell/program.h"
-#include "shader_recompiler/frontend/maxwell/termination_code.h"
#include "shader_recompiler/frontend/maxwell/translate/translate.h"
#include "shader_recompiler/ir_opt/passes.h"
namespace Shader::Maxwell {
namespace {
-void TranslateCode(ObjectPool<IR::Inst>& inst_pool, ObjectPool<IR::Block>& block_pool,
- Environment& env, const Flow::Function& cfg_function, IR::Function& function,
- std::span<IR::Block*> block_map) {
+IR::BlockList TranslateCode(ObjectPool<IR::Inst>& inst_pool, ObjectPool<IR::Block>& block_pool,
+ Environment& env, Flow::Function& cfg_function) {
const size_t num_blocks{cfg_function.blocks.size()};
- function.blocks.reserve(num_blocks);
-
- for (const Flow::BlockId block_id : cfg_function.blocks) {
- const Flow::Block& flow_block{cfg_function.blocks_data[block_id]};
-
- IR::Block* const ir_block{block_pool.Create(Translate(inst_pool, env, flow_block))};
- block_map[flow_block.id] = ir_block;
- function.blocks.emplace_back(ir_block);
- }
-}
-
-void EmitTerminationInsts(const Flow::Function& cfg_function,
- std::span<IR::Block* const> block_map) {
- for (const Flow::BlockId block_id : cfg_function.blocks) {
- const Flow::Block& flow_block{cfg_function.blocks_data[block_id]};
- EmitTerminationCode(flow_block, block_map);
- }
-}
-
-void TranslateFunction(ObjectPool<IR::Inst>& inst_pool, ObjectPool<IR::Block>& block_pool,
- Environment& env, const Flow::Function& cfg_function,
- IR::Function& function) {
- std::vector<IR::Block*> block_map;
- block_map.resize(cfg_function.blocks_data.size());
-
- TranslateCode(inst_pool, block_pool, env, cfg_function, function, block_map);
- EmitTerminationInsts(cfg_function, block_map);
+ std::vector<IR::Block*> blocks(cfg_function.blocks.size());
+ std::ranges::for_each(cfg_function.blocks, [&, i = size_t{0}](auto& cfg_block) mutable {
+ const u32 begin{cfg_block.begin.Offset()};
+ const u32 end{cfg_block.end.Offset()};
+ blocks[i] = block_pool.Create(inst_pool, begin, end);
+ cfg_block.ir = blocks[i];
+ ++i;
+ });
+ std::ranges::for_each(cfg_function.blocks, [&, i = size_t{0}](auto& cfg_block) mutable {
+ IR::Block* const block{blocks[i]};
+ ++i;
+ if (cfg_block.end_class != Flow::EndClass::Branch) {
+ block->SetReturn();
+ } else if (cfg_block.cond == IR::Condition{true}) {
+ block->SetBranch(cfg_block.branch_true->ir);
+ } else if (cfg_block.cond == IR::Condition{false}) {
+ block->SetBranch(cfg_block.branch_false->ir);
+ } else {
+ block->SetBranches(cfg_block.cond, cfg_block.branch_true->ir,
+ cfg_block.branch_false->ir);
+ }
+ });
+ return IR::VisitAST(inst_pool, block_pool, blocks,
+ [&](IR::Block* block) { Translate(env, block); });
}
} // Anonymous namespace
IR::Program TranslateProgram(ObjectPool<IR::Inst>& inst_pool, ObjectPool<IR::Block>& block_pool,
- Environment& env, const Flow::CFG& cfg) {
+ Environment& env, Flow::CFG& cfg) {
IR::Program program;
auto& functions{program.functions};
functions.reserve(cfg.Functions().size());
- for (const Flow::Function& cfg_function : cfg.Functions()) {
- TranslateFunction(inst_pool, block_pool, env, cfg_function, functions.emplace_back());
+ for (Flow::Function& cfg_function : cfg.Functions()) {
+ functions.push_back(IR::Function{
+ .blocks{TranslateCode(inst_pool, block_pool, env, cfg_function)},
+ });
}
+
+ fmt::print(stdout, "No optimizations: {}", IR::DumpProgram(program));
std::ranges::for_each(functions, Optimization::SsaRewritePass);
for (IR::Function& function : functions) {
Optimization::Invoke(Optimization::GlobalMemoryToStorageBufferPass, function);
diff --git a/src/shader_recompiler/frontend/maxwell/program.h b/src/shader_recompiler/frontend/maxwell/program.h
index 3355ab129..542621a1d 100644
--- a/src/shader_recompiler/frontend/maxwell/program.h
+++ b/src/shader_recompiler/frontend/maxwell/program.h
@@ -19,6 +19,6 @@ namespace Shader::Maxwell {
[[nodiscard]] IR::Program TranslateProgram(ObjectPool<IR::Inst>& inst_pool,
ObjectPool<IR::Block>& block_pool, Environment& env,
- const Flow::CFG& cfg);
+ Flow::CFG& cfg);
} // namespace Shader::Maxwell
diff --git a/src/shader_recompiler/frontend/maxwell/termination_code.cpp b/src/shader_recompiler/frontend/maxwell/termination_code.cpp
deleted file mode 100644
index ed5137f20..000000000
--- a/src/shader_recompiler/frontend/maxwell/termination_code.cpp
+++ /dev/null
@@ -1,86 +0,0 @@
-// Copyright 2021 yuzu Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <span>
-
-#include "shader_recompiler/exception.h"
-#include "shader_recompiler/frontend/ir/basic_block.h"
-#include "shader_recompiler/frontend/ir/ir_emitter.h"
-#include "shader_recompiler/frontend/maxwell/control_flow.h"
-#include "shader_recompiler/frontend/maxwell/termination_code.h"
-
-namespace Shader::Maxwell {
-
-static void EmitExit(IR::IREmitter& ir) {
- ir.Exit();
-}
-
-static IR::U1 GetFlowTest(IR::FlowTest flow_test, IR::IREmitter& ir) {
- switch (flow_test) {
- case IR::FlowTest::T:
- return ir.Imm1(true);
- case IR::FlowTest::F:
- return ir.Imm1(false);
- case IR::FlowTest::NE:
- // FIXME: Verify this
- return ir.LogicalNot(ir.GetZFlag());
- case IR::FlowTest::NaN:
- // FIXME: Verify this
- return ir.LogicalAnd(ir.GetSFlag(), ir.GetZFlag());
- default:
- throw NotImplementedException("Flow test {}", flow_test);
- }
-}
-
-static IR::U1 GetCond(IR::Condition cond, IR::IREmitter& ir) {
- const IR::FlowTest flow_test{cond.FlowTest()};
- const auto [pred, pred_negated]{cond.Pred()};
- if (pred == IR::Pred::PT && !pred_negated) {
- return GetFlowTest(flow_test, ir);
- }
- if (flow_test == IR::FlowTest::T) {
- return ir.GetPred(pred, pred_negated);
- }
- return ir.LogicalAnd(ir.GetPred(pred, pred_negated), GetFlowTest(flow_test, ir));
-}
-
-static void EmitBranch(const Flow::Block& flow_block, std::span<IR::Block* const> block_map,
- IR::IREmitter& ir) {
- const auto add_immediate_predecessor = [&](Flow::BlockId label) {
- block_map[label]->AddImmediatePredecessor(&ir.block);
- };
- if (flow_block.cond == true) {
- add_immediate_predecessor(flow_block.branch_true);
- return ir.Branch(block_map[flow_block.branch_true]);
- }
- if (flow_block.cond == false) {
- add_immediate_predecessor(flow_block.branch_false);
- return ir.Branch(block_map[flow_block.branch_false]);
- }
- add_immediate_predecessor(flow_block.branch_true);
- add_immediate_predecessor(flow_block.branch_false);
- return ir.BranchConditional(GetCond(flow_block.cond, ir), block_map[flow_block.branch_true],
- block_map[flow_block.branch_false]);
-}
-
-void EmitTerminationCode(const Flow::Block& flow_block, std::span<IR::Block* const> block_map) {
- IR::Block* const block{block_map[flow_block.id]};
- IR::IREmitter ir(*block);
- switch (flow_block.end_class) {
- case Flow::EndClass::Branch:
- EmitBranch(flow_block, block_map, ir);
- break;
- case Flow::EndClass::Exit:
- EmitExit(ir);
- break;
- case Flow::EndClass::Return:
- ir.Return();
- break;
- case Flow::EndClass::Unreachable:
- ir.Unreachable();
- break;
- }
-}
-
-} // namespace Shader::Maxwell
diff --git a/src/shader_recompiler/frontend/maxwell/termination_code.h b/src/shader_recompiler/frontend/maxwell/termination_code.h
deleted file mode 100644
index 04e044534..000000000
--- a/src/shader_recompiler/frontend/maxwell/termination_code.h
+++ /dev/null
@@ -1,17 +0,0 @@
-// Copyright 2021 yuzu Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <span>
-
-#include "shader_recompiler/frontend/ir/basic_block.h"
-#include "shader_recompiler/frontend/maxwell/control_flow.h"
-
-namespace Shader::Maxwell {
-
-/// Emit termination instructions and collect immediate predecessors
-void EmitTerminationCode(const Flow::Block& flow_block, std::span<IR::Block* const> block_map);
-
-} // namespace Shader::Maxwell
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/integer_shift_left.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/integer_shift_left.cpp
index d4b417d14..b752785d4 100644
--- a/src/shader_recompiler/frontend/maxwell/translate/impl/integer_shift_left.cpp
+++ b/src/shader_recompiler/frontend/maxwell/translate/impl/integer_shift_left.cpp
@@ -28,7 +28,7 @@ void SHL(TranslatorVisitor& v, u64 insn, const IR::U32& unsafe_shift) {
IR::U32 result;
if (shl.w != 0) {
// When .W is set, the shift value is wrapped
- // To emulate this we just have to clamp it ourselves.
+ // To emulate this we just have to wrap it ourselves.
const IR::U32 shift{v.ir.BitwiseAnd(unsafe_shift, v.ir.Imm32(31))};
result = v.ir.ShiftLeftLogical(base, shift);
} else {
diff --git a/src/shader_recompiler/frontend/maxwell/translate/translate.cpp b/src/shader_recompiler/frontend/maxwell/translate/translate.cpp
index 7e6bb07a2..f1230f58f 100644
--- a/src/shader_recompiler/frontend/maxwell/translate/translate.cpp
+++ b/src/shader_recompiler/frontend/maxwell/translate/translate.cpp
@@ -23,14 +23,13 @@ static void Invoke(TranslatorVisitor& visitor, Location pc, u64 insn) {
}
}
-IR::Block Translate(ObjectPool<IR::Inst>& inst_pool, Environment& env,
- const Flow::Block& flow_block) {
- IR::Block block{inst_pool, flow_block.begin.Offset(), flow_block.end.Offset()};
- TranslatorVisitor visitor{env, block};
-
- const Location pc_end{flow_block.end};
- Location pc{flow_block.begin};
- while (pc != pc_end) {
+void Translate(Environment& env, IR::Block* block) {
+ if (block->IsVirtual()) {
+ return;
+ }
+ TranslatorVisitor visitor{env, *block};
+ const Location pc_end{block->LocationEnd()};
+ for (Location pc = block->LocationBegin(); pc != pc_end; ++pc) {
const u64 insn{env.ReadInstruction(pc.Offset())};
const Opcode opcode{Decode(insn)};
switch (opcode) {
@@ -43,9 +42,7 @@ IR::Block Translate(ObjectPool<IR::Inst>& inst_pool, Environment& env,
default:
throw LogicError("Invalid opcode {}", opcode);
}
- ++pc;
}
- return block;
}
} // namespace Shader::Maxwell
diff --git a/src/shader_recompiler/frontend/maxwell/translate/translate.h b/src/shader_recompiler/frontend/maxwell/translate/translate.h
index c1c21b278..e1aa2e0f4 100644
--- a/src/shader_recompiler/frontend/maxwell/translate/translate.h
+++ b/src/shader_recompiler/frontend/maxwell/translate/translate.h
@@ -6,14 +6,9 @@
#include "shader_recompiler/environment.h"
#include "shader_recompiler/frontend/ir/basic_block.h"
-#include "shader_recompiler/frontend/ir/microinstruction.h"
-#include "shader_recompiler/frontend/maxwell/control_flow.h"
-#include "shader_recompiler/frontend/maxwell/location.h"
-#include "shader_recompiler/object_pool.h"
namespace Shader::Maxwell {
-[[nodiscard]] IR::Block Translate(ObjectPool<IR::Inst>& inst_pool, Environment& env,
- const Flow::Block& flow_block);
+void Translate(Environment& env, IR::Block* block);
} // namespace Shader::Maxwell
diff --git a/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp b/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp
index f1170c61e..9fba6ac23 100644
--- a/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp
+++ b/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp
@@ -132,6 +132,32 @@ void FoldLogicalAnd(IR::Inst& inst) {
}
}
+void FoldLogicalOr(IR::Inst& inst) {
+ if (!FoldCommutative(inst, [](bool a, bool b) { return a || b; })) {
+ return;
+ }
+ const IR::Value rhs{inst.Arg(1)};
+ if (rhs.IsImmediate()) {
+ if (rhs.U1()) {
+ inst.ReplaceUsesWith(IR::Value{true});
+ } else {
+ inst.ReplaceUsesWith(inst.Arg(0));
+ }
+ }
+}
+
+void FoldLogicalNot(IR::Inst& inst) {
+ const IR::U1 value{inst.Arg(0)};
+ if (value.IsImmediate()) {
+ inst.ReplaceUsesWith(IR::Value{!value.U1()});
+ return;
+ }
+ IR::Inst* const arg{value.InstRecursive()};
+ if (arg->Opcode() == IR::Opcode::LogicalNot) {
+ inst.ReplaceUsesWith(arg->Arg(0));
+ }
+}
+
template <typename Dest, typename Source>
void FoldBitCast(IR::Inst& inst, IR::Opcode reverse) {
const IR::Value value{inst.Arg(0)};
@@ -160,6 +186,24 @@ void FoldWhenAllImmediates(IR::Inst& inst, Func&& func) {
inst.ReplaceUsesWith(EvalImmediates(inst, func, Indices{}));
}
+void FoldBranchConditional(IR::Inst& inst) {
+ const IR::U1 cond{inst.Arg(0)};
+ if (cond.IsImmediate()) {
+ // TODO: Convert to Branch
+ return;
+ }
+ const IR::Inst* cond_inst{cond.InstRecursive()};
+ if (cond_inst->Opcode() == IR::Opcode::LogicalNot) {
+ const IR::Value true_label{inst.Arg(1)};
+ const IR::Value false_label{inst.Arg(2)};
+ // Remove negation on the conditional (take the parameter out of LogicalNot) and swap
+ // the branches
+ inst.SetArg(0, cond_inst->Arg(0));
+ inst.SetArg(1, false_label);
+ inst.SetArg(2, true_label);
+ }
+}
+
void ConstantPropagation(IR::Inst& inst) {
switch (inst.Opcode()) {
case IR::Opcode::GetRegister:
@@ -178,6 +222,10 @@ void ConstantPropagation(IR::Inst& inst) {
return FoldSelect<u32>(inst);
case IR::Opcode::LogicalAnd:
return FoldLogicalAnd(inst);
+ case IR::Opcode::LogicalOr:
+ return FoldLogicalOr(inst);
+ case IR::Opcode::LogicalNot:
+ return FoldLogicalNot(inst);
case IR::Opcode::ULessThan:
return FoldWhenAllImmediates(inst, [](u32 a, u32 b) { return a < b; });
case IR::Opcode::BitFieldUExtract:
@@ -188,6 +236,8 @@ void ConstantPropagation(IR::Inst& inst) {
}
return (base >> shift) & ((1U << count) - 1);
});
+ case IR::Opcode::BranchConditional:
+ return FoldBranchConditional(inst);
default:
break;
}
diff --git a/src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp b/src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp
index 15a9db90a..8ca996e93 100644
--- a/src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp
+++ b/src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp
@@ -34,6 +34,13 @@ struct SignFlagTag : FlagTag {};
struct CarryFlagTag : FlagTag {};
struct OverflowFlagTag : FlagTag {};
+struct GotoVariable : FlagTag {
+ GotoVariable() = default;
+ explicit GotoVariable(u32 index_) : index{index_} {}
+
+ u32 index;
+};
+
struct DefTable {
[[nodiscard]] ValueMap& operator[](IR::Reg variable) noexcept {
return regs[IR::RegIndex(variable)];
@@ -43,6 +50,10 @@ struct DefTable {
return preds[IR::PredIndex(variable)];
}
+ [[nodiscard]] ValueMap& operator[](GotoVariable goto_variable) {
+ return goto_vars[goto_variable.index];
+ }
+
[[nodiscard]] ValueMap& operator[](ZeroFlagTag) noexcept {
return zero_flag;
}
@@ -61,6 +72,7 @@ struct DefTable {
std::array<ValueMap, IR::NUM_USER_REGS> regs;
std::array<ValueMap, IR::NUM_USER_PREDS> preds;
+ boost::container::flat_map<u32, ValueMap> goto_vars;
ValueMap zero_flag;
ValueMap sign_flag;
ValueMap carry_flag;
@@ -68,15 +80,15 @@ struct DefTable {
};
IR::Opcode UndefOpcode(IR::Reg) noexcept {
- return IR::Opcode::Undef32;
+ return IR::Opcode::UndefU32;
}
IR::Opcode UndefOpcode(IR::Pred) noexcept {
- return IR::Opcode::Undef1;
+ return IR::Opcode::UndefU1;
}
IR::Opcode UndefOpcode(const FlagTag&) noexcept {
- return IR::Opcode::Undef1;
+ return IR::Opcode::UndefU1;
}
[[nodiscard]] bool IsPhi(const IR::Inst& inst) noexcept {
@@ -165,6 +177,9 @@ void SsaRewritePass(IR::Function& function) {
pass.WriteVariable(pred, block, inst.Arg(1));
}
break;
+ case IR::Opcode::SetGotoVariable:
+ pass.WriteVariable(GotoVariable{inst.Arg(0).U32()}, block, inst.Arg(1));
+ break;
case IR::Opcode::SetZFlag:
pass.WriteVariable(ZeroFlagTag{}, block, inst.Arg(0));
break;
@@ -187,6 +202,9 @@ void SsaRewritePass(IR::Function& function) {
inst.ReplaceUsesWith(pass.ReadVariable(pred, block));
}
break;
+ case IR::Opcode::GetGotoVariable:
+ inst.ReplaceUsesWith(pass.ReadVariable(GotoVariable{inst.Arg(0).U32()}, block));
+ break;
case IR::Opcode::GetZFlag:
inst.ReplaceUsesWith(pass.ReadVariable(ZeroFlagTag{}, block));
break;
diff --git a/src/shader_recompiler/ir_opt/verification_pass.cpp b/src/shader_recompiler/ir_opt/verification_pass.cpp
index 8a5adf5a2..32b56eb57 100644
--- a/src/shader_recompiler/ir_opt/verification_pass.cpp
+++ b/src/shader_recompiler/ir_opt/verification_pass.cpp
@@ -14,6 +14,10 @@ namespace Shader::Optimization {
static void ValidateTypes(const IR::Function& function) {
for (const auto& block : function.blocks) {
for (const IR::Inst& inst : *block) {
+ if (inst.Opcode() == IR::Opcode::Phi) {
+ // Skip validation on phi nodes
+ continue;
+ }
const size_t num_args{inst.NumArgs()};
for (size_t i = 0; i < num_args; ++i) {
const IR::Type t1{inst.Arg(i).Type()};
diff --git a/src/shader_recompiler/main.cpp b/src/shader_recompiler/main.cpp
index 9887e066d..3ca1677c4 100644
--- a/src/shader_recompiler/main.cpp
+++ b/src/shader_recompiler/main.cpp
@@ -2,6 +2,7 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
+#include <chrono>
#include <filesystem>
#include <fmt/format.h>
@@ -36,34 +37,46 @@ void RunDatabase() {
ForEachFile("D:\\Shaders\\Database", [&](const std::filesystem::path& path) {
map.emplace_back(std::make_unique<FileEnvironment>(path.string().c_str()));
});
- for (int i = 0; i < 300; ++i) {
+ auto block_pool{std::make_unique<ObjectPool<Flow::Block>>()};
+ auto t0 = std::chrono::high_resolution_clock::now();
+ int N = 1;
+ int n = 0;
+ for (int i = 0; i < N; ++i) {
for (auto& env : map) {
+ ++n;
// fmt::print(stdout, "Decoding {}\n", path.string());
+
const Location start_address{0};
- auto cfg{std::make_unique<Flow::CFG>(*env, start_address)};
+ block_pool->ReleaseContents();
+ Flow::CFG cfg{*env, *block_pool, start_address};
// fmt::print(stdout, "{}\n", cfg->Dot());
// IR::Program program{env, cfg};
// Optimize(program);
// const std::string code{EmitGLASM(program)};
}
}
+ auto t = std::chrono::high_resolution_clock::now();
+ fmt::print(stdout, "{} ms",
+ std::chrono::duration_cast<std::chrono::milliseconds>(t - t0).count() / double(N));
}
int main() {
// RunDatabase();
+ auto flow_block_pool{std::make_unique<ObjectPool<Flow::Block>>()};
auto inst_pool{std::make_unique<ObjectPool<IR::Inst>>()};
auto block_pool{std::make_unique<ObjectPool<IR::Block>>()};
- // FileEnvironment env{"D:\\Shaders\\Database\\test.bin"};
- FileEnvironment env{"D:\\Shaders\\Database\\Oninaki\\CS15C2FB1F0B965767.bin"};
+ FileEnvironment env{"D:\\Shaders\\Database\\Oninaki\\CS8F146B41DB6BD826.bin"};
+ // FileEnvironment env{"D:\\Shaders\\shader.bin"};
for (int i = 0; i < 1; ++i) {
block_pool->ReleaseContents();
inst_pool->ReleaseContents();
- auto cfg{std::make_unique<Flow::CFG>(env, 0)};
- // fmt::print(stdout, "{}\n", cfg->Dot());
- IR::Program program{TranslateProgram(*inst_pool, *block_pool, env, *cfg)};
- // fmt::print(stdout, "{}\n", IR::DumpProgram(program));
+ flow_block_pool->ReleaseContents();
+ Flow::CFG cfg{env, *flow_block_pool, 0};
+ fmt::print(stdout, "{}\n", cfg.Dot());
+ IR::Program program{TranslateProgram(*inst_pool, *block_pool, env, cfg)};
+ fmt::print(stdout, "{}\n", IR::DumpProgram(program));
Backend::SPIRV::EmitSPIRV spirv{program};
}
}
diff --git a/src/shader_recompiler/shader_info.h b/src/shader_recompiler/shader_info.h
new file mode 100644
index 000000000..1760bf4a9
--- /dev/null
+++ b/src/shader_recompiler/shader_info.h
@@ -0,0 +1,28 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+
+#include <boost/container/static_vector.hpp>
+
+namespace Shader {
+
+struct Info {
+ struct ConstantBuffer {
+
+ };
+
+ struct {
+ bool workgroup_id{};
+ bool local_invocation_id{};
+ bool fp16{};
+ bool fp64{};
+ } uses;
+
+ std::array<18
+};
+
+} // namespace Shader