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// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <initializer_list>
#include <map>
#include <memory>
#include "common/bit_cast.h"
#include "common/common_types.h"
#include "shader_recompiler/frontend/ir/basic_block.h"
#include "shader_recompiler/frontend/ir/value.h"
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) {
PrependNewInst(end(), op, args);
}
Block::iterator Block::PrependNewInst(iterator insertion_point, Opcode op,
std::initializer_list<Value> args, u32 flags) {
Inst* const inst{inst_pool->Create(op, flags)};
const auto result_it{instructions.insert(insertion_point, *inst)};
if (inst->NumArgs() != args.size()) {
throw InvalidArgument("Invalid number of arguments {} in {}", args.size(), op);
}
std::ranges::for_each(args, [inst, index = size_t{0}](const Value& arg) mutable {
inst->SetArg(index, arg);
++index;
});
return result_it;
}
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 {
return location_begin;
}
u32 Block::LocationEnd() const noexcept {
return location_end;
}
Block::InstructionList& Block::Instructions() noexcept {
return instructions;
}
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;
}
static std::string BlockToIndex(const std::map<const Block*, size_t>& block_to_index,
Block* block) {
if (const auto it{block_to_index.find(block)}; it != block_to_index.end()) {
return fmt::format("{{Block ${}}}", it->second);
}
return fmt::format("$<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,
std::map<const Inst*, size_t>& inst_to_index, size_t& inst_index,
const Value& arg) {
if (arg.IsEmpty()) {
return "<null>";
}
if (arg.IsLabel()) {
return BlockToIndex(block_to_index, arg.Label());
}
if (!arg.IsImmediate() || arg.IsIdentity()) {
return fmt::format("%{}", InstIndex(inst_to_index, inst_index, arg.Inst()));
}
switch (arg.Type()) {
case Type::U1:
return fmt::format("#{}", arg.U1() ? "true" : "false");
case Type::U8:
return fmt::format("#{}", arg.U8());
case Type::U16:
return fmt::format("#{}", arg.U16());
case Type::U32:
return fmt::format("#{}", arg.U32());
case Type::U64:
return fmt::format("#{}", arg.U64());
case Type::F32:
return fmt::format("#{}", arg.F32());
case Type::Reg:
return fmt::format("{}", arg.Reg());
case Type::Pred:
return fmt::format("{}", arg.Pred());
case Type::Attribute:
return fmt::format("{}", arg.Attribute());
default:
return "<unknown immediate type>";
}
}
std::string DumpBlock(const Block& block) {
size_t inst_index{0};
std::map<const Inst*, size_t> inst_to_index;
return DumpBlock(block, {}, inst_to_index, inst_index);
}
std::string DumpBlock(const Block& block, const std::map<const Block*, size_t>& block_to_index,
std::map<const Inst*, size_t>& inst_to_index, size_t& inst_index) {
std::string ret{"Block"};
if (const auto it{block_to_index.find(&block)}; it != block_to_index.end()) {
ret += fmt::format(" ${}", it->second);
}
ret += fmt::format(": begin={:04x} end={:04x}\n", block.LocationBegin(), block.LocationEnd());
for (const Inst& inst : block) {
const Opcode op{inst.Opcode()};
ret += fmt::format("[{:016x}] ", reinterpret_cast<u64>(&inst));
if (TypeOf(op) != Type::Void) {
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{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, inst_index, arg)};
ret += arg_index != 0 ? ", " : " ";
if (op == Opcode::Phi) {
ret += fmt::format("[ {}, {} ]", arg_str,
BlockToIndex(block_to_index, inst.PhiBlock(arg_index)));
} else {
ret += arg_str;
}
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) {
ret += fmt::format(" (uses: {})\n", inst.UseCount());
} else {
ret += '\n';
}
}
return ret;
}
} // namespace Shader::IR
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