101 lines
3.4 KiB
C++
101 lines
3.4 KiB
C++
// Copyright 2021 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <map>
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#include <set>
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#include "shader_recompiler/exception.h"
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#include "shader_recompiler/frontend/ir/basic_block.h"
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#include "shader_recompiler/frontend/ir/value.h"
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#include "shader_recompiler/ir_opt/passes.h"
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namespace Shader::Optimization {
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static void ValidateTypes(const IR::Program& program) {
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for (const auto& block : program.blocks) {
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for (const IR::Inst& inst : *block) {
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if (inst.GetOpcode() == IR::Opcode::Phi) {
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// Skip validation on phi nodes
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continue;
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}
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const size_t num_args{inst.NumArgs()};
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for (size_t i = 0; i < num_args; ++i) {
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const IR::Type t1{inst.Arg(i).Type()};
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const IR::Type t2{IR::ArgTypeOf(inst.GetOpcode(), i)};
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if (!IR::AreTypesCompatible(t1, t2)) {
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throw LogicError("Invalid types in block:\n{}", IR::DumpBlock(*block));
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}
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}
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}
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}
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}
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static void ValidateUses(const IR::Program& program) {
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std::map<IR::Inst*, int> actual_uses;
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for (const auto& block : program.blocks) {
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for (const IR::Inst& inst : *block) {
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const size_t num_args{inst.NumArgs()};
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for (size_t i = 0; i < num_args; ++i) {
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const IR::Value arg{inst.Arg(i)};
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if (!arg.IsImmediate()) {
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++actual_uses[arg.Inst()];
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}
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}
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}
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}
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for (const auto [inst, uses] : actual_uses) {
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if (inst->UseCount() != uses) {
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throw LogicError("Invalid uses in block: {}", IR::DumpProgram(program));
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}
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}
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}
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static void ValidateForwardDeclarations(const IR::Program& program) {
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std::set<const IR::Inst*> definitions;
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for (const IR::Block* const block : program.blocks) {
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for (const IR::Inst& inst : *block) {
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definitions.emplace(&inst);
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if (inst.GetOpcode() == IR::Opcode::Phi) {
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// Phi nodes can have forward declarations
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continue;
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}
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const size_t num_args{inst.NumArgs()};
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for (size_t arg = 0; arg < num_args; ++arg) {
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if (inst.Arg(arg).IsImmediate()) {
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continue;
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}
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if (!definitions.contains(inst.Arg(arg).Inst())) {
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fmt::print("{}\n", IR::DumpBlock(*block));
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throw LogicError("Forward declaration in block: {}", IR::DumpBlock(*block));
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}
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}
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}
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}
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}
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static void ValidatePhiNodes(const IR::Program& program) {
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for (const IR::Block* const block : program.blocks) {
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bool no_more_phis{false};
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for (const IR::Inst& inst : *block) {
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if (inst.GetOpcode() == IR::Opcode::Phi) {
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if (no_more_phis) {
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fmt::print("{}\n", IR::DumpBlock(*block));
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throw LogicError("Interleaved phi nodes: {}", IR::DumpBlock(*block));
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}
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} else {
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no_more_phis = true;
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}
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}
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}
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}
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void VerificationPass(const IR::Program& program) {
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ValidateTypes(program);
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ValidateUses(program);
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ValidateForwardDeclarations(program);
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ValidatePhiNodes(program);
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}
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} // namespace Shader::Optimization
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