mirror of
https://git.suyu.dev/suyu/suyu.git
synced 2024-11-22 23:02:47 +01:00
Merge pull request #3032 from ReinUsesLisp/simplify-control-flow-brx
shader/control_flow: Abstract repeated code chunks in BRX tracking
This commit is contained in:
bunnei
GitHub
commit
b6ae48966d
1 changed files with 116 additions and 108 deletions
|
|
@ -16,7 +16,9 @@
|
|||
#include "video_core/shader/shader_ir.h"
|
||||
|
||||
namespace VideoCommon::Shader {
|
||||
|
||||
namespace {
|
||||
|
||||
using Tegra::Shader::Instruction;
|
||||
using Tegra::Shader::OpCode;
|
||||
|
||||
|
|
@ -68,15 +70,15 @@ struct CFGRebuildState {
|
|||
const ProgramCode& program_code;
|
||||
ConstBufferLocker& locker;
|
||||
u32 start{};
|
||||
std::vector<BlockInfo> block_info{};
|
||||
std::list<u32> inspect_queries{};
|
||||
std::list<Query> queries{};
|
||||
std::unordered_map<u32, u32> registered{};
|
||||
std::set<u32> labels{};
|
||||
std::map<u32, u32> ssy_labels{};
|
||||
std::map<u32, u32> pbk_labels{};
|
||||
std::unordered_map<u32, BlockStack> stacks{};
|
||||
ASTManager* manager;
|
||||
std::vector<BlockInfo> block_info;
|
||||
std::list<u32> inspect_queries;
|
||||
std::list<Query> queries;
|
||||
std::unordered_map<u32, u32> registered;
|
||||
std::set<u32> labels;
|
||||
std::map<u32, u32> ssy_labels;
|
||||
std::map<u32, u32> pbk_labels;
|
||||
std::unordered_map<u32, BlockStack> stacks;
|
||||
ASTManager* manager{};
|
||||
};
|
||||
|
||||
enum class BlockCollision : u32 { None, Found, Inside };
|
||||
|
|
@ -109,7 +111,7 @@ BlockInfo& CreateBlockInfo(CFGRebuildState& state, u32 start, u32 end) {
|
|||
}
|
||||
|
||||
Pred GetPredicate(u32 index, bool negated) {
|
||||
return static_cast<Pred>(index + (negated ? 8 : 0));
|
||||
return static_cast<Pred>(static_cast<u64>(index) + (negated ? 8ULL : 0ULL));
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -136,15 +138,13 @@ struct BranchIndirectInfo {
|
|||
s32 relative_position{};
|
||||
};
|
||||
|
||||
std::optional<BranchIndirectInfo> TrackBranchIndirectInfo(const CFGRebuildState& state,
|
||||
u32 start_address, u32 current_position) {
|
||||
const u32 shader_start = state.start;
|
||||
u32 pos = current_position;
|
||||
BranchIndirectInfo result{};
|
||||
u64 track_register = 0;
|
||||
struct BufferInfo {
|
||||
u32 index;
|
||||
u32 offset;
|
||||
};
|
||||
|
||||
// Step 0 Get BRX Info
|
||||
const Instruction instr = {state.program_code[pos]};
|
||||
std::optional<std::pair<s32, u64>> GetBRXInfo(const CFGRebuildState& state, u32& pos) {
|
||||
const Instruction instr = state.program_code[pos];
|
||||
const auto opcode = OpCode::Decode(instr);
|
||||
if (opcode->get().GetId() != OpCode::Id::BRX) {
|
||||
return std::nullopt;
|
||||
|
|
@ -152,86 +152,94 @@ std::optional<BranchIndirectInfo> TrackBranchIndirectInfo(const CFGRebuildState&
|
|||
if (instr.brx.constant_buffer != 0) {
|
||||
return std::nullopt;
|
||||
}
|
||||
track_register = instr.gpr8.Value();
|
||||
result.relative_position = instr.brx.GetBranchExtend();
|
||||
pos--;
|
||||
bool found_track = false;
|
||||
|
||||
// Step 1 Track LDC
|
||||
while (pos >= shader_start) {
|
||||
if (IsSchedInstruction(pos, shader_start)) {
|
||||
pos--;
|
||||
continue;
|
||||
}
|
||||
const Instruction instr = {state.program_code[pos]};
|
||||
const auto opcode = OpCode::Decode(instr);
|
||||
if (opcode->get().GetId() == OpCode::Id::LD_C) {
|
||||
if (instr.gpr0.Value() == track_register &&
|
||||
instr.ld_c.type.Value() == Tegra::Shader::UniformType::Single) {
|
||||
result.buffer = instr.cbuf36.index.Value();
|
||||
result.offset = static_cast<u32>(instr.cbuf36.GetOffset());
|
||||
track_register = instr.gpr8.Value();
|
||||
pos--;
|
||||
found_track = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
pos--;
|
||||
--pos;
|
||||
return std::make_pair(instr.brx.GetBranchExtend(), instr.gpr8.Value());
|
||||
}
|
||||
|
||||
if (!found_track) {
|
||||
return std::nullopt;
|
||||
}
|
||||
found_track = false;
|
||||
|
||||
// Step 2 Track SHL
|
||||
while (pos >= shader_start) {
|
||||
if (IsSchedInstruction(pos, shader_start)) {
|
||||
pos--;
|
||||
template <typename Result, typename TestCallable, typename PackCallable>
|
||||
// requires std::predicate<TestCallable, Instruction, const OpCode::Matcher&>
|
||||
// requires std::invocable<PackCallable, Instruction, const OpCode::Matcher&>
|
||||
std::optional<Result> TrackInstruction(const CFGRebuildState& state, u32& pos, TestCallable test,
|
||||
PackCallable pack) {
|
||||
for (; pos >= state.start; --pos) {
|
||||
if (IsSchedInstruction(pos, state.start)) {
|
||||
continue;
|
||||
}
|
||||
const Instruction instr = state.program_code[pos];
|
||||
const auto opcode = OpCode::Decode(instr);
|
||||
if (opcode->get().GetId() == OpCode::Id::SHL_IMM) {
|
||||
if (instr.gpr0.Value() == track_register) {
|
||||
track_register = instr.gpr8.Value();
|
||||
pos--;
|
||||
found_track = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
pos--;
|
||||
}
|
||||
|
||||
if (!found_track) {
|
||||
return std::nullopt;
|
||||
}
|
||||
found_track = false;
|
||||
|
||||
// Step 3 Track IMNMX
|
||||
while (pos >= shader_start) {
|
||||
if (IsSchedInstruction(pos, shader_start)) {
|
||||
pos--;
|
||||
if (!opcode) {
|
||||
continue;
|
||||
}
|
||||
const Instruction instr = state.program_code[pos];
|
||||
const auto opcode = OpCode::Decode(instr);
|
||||
if (opcode->get().GetId() == OpCode::Id::IMNMX_IMM) {
|
||||
if (instr.gpr0.Value() == track_register) {
|
||||
track_register = instr.gpr8.Value();
|
||||
result.entries = instr.alu.GetSignedImm20_20() + 1;
|
||||
pos--;
|
||||
found_track = true;
|
||||
break;
|
||||
if (test(instr, opcode->get())) {
|
||||
--pos;
|
||||
return std::make_optional(pack(instr, opcode->get()));
|
||||
}
|
||||
}
|
||||
pos--;
|
||||
}
|
||||
|
||||
if (!found_track) {
|
||||
return std::nullopt;
|
||||
}
|
||||
return result;
|
||||
|
||||
std::optional<std::pair<BufferInfo, u64>> TrackLDC(const CFGRebuildState& state, u32& pos,
|
||||
u64 brx_tracked_register) {
|
||||
return TrackInstruction<std::pair<BufferInfo, u64>>(
|
||||
state, pos,
|
||||
[brx_tracked_register](auto instr, const auto& opcode) {
|
||||
return opcode.GetId() == OpCode::Id::LD_C &&
|
||||
instr.gpr0.Value() == brx_tracked_register &&
|
||||
instr.ld_c.type.Value() == Tegra::Shader::UniformType::Single;
|
||||
},
|
||||
[](auto instr, const auto& opcode) {
|
||||
const BufferInfo info = {static_cast<u32>(instr.cbuf36.index.Value()),
|
||||
static_cast<u32>(instr.cbuf36.GetOffset())};
|
||||
return std::make_pair(info, instr.gpr8.Value());
|
||||
});
|
||||
}
|
||||
|
||||
std::optional<u64> TrackSHLRegister(const CFGRebuildState& state, u32& pos,
|
||||
u64 ldc_tracked_register) {
|
||||
return TrackInstruction<u64>(state, pos,
|
||||
[ldc_tracked_register](auto instr, const auto& opcode) {
|
||||
return opcode.GetId() == OpCode::Id::SHL_IMM &&
|
||||
instr.gpr0.Value() == ldc_tracked_register;
|
||||
},
|
||||
[](auto instr, const auto&) { return instr.gpr8.Value(); });
|
||||
}
|
||||
|
||||
std::optional<u32> TrackIMNMXValue(const CFGRebuildState& state, u32& pos,
|
||||
u64 shl_tracked_register) {
|
||||
return TrackInstruction<u32>(state, pos,
|
||||
[shl_tracked_register](auto instr, const auto& opcode) {
|
||||
return opcode.GetId() == OpCode::Id::IMNMX_IMM &&
|
||||
instr.gpr0.Value() == shl_tracked_register;
|
||||
},
|
||||
[](auto instr, const auto&) {
|
||||
return static_cast<u32>(instr.alu.GetSignedImm20_20() + 1);
|
||||
});
|
||||
}
|
||||
|
||||
std::optional<BranchIndirectInfo> TrackBranchIndirectInfo(const CFGRebuildState& state, u32 pos) {
|
||||
const auto brx_info = GetBRXInfo(state, pos);
|
||||
if (!brx_info) {
|
||||
return std::nullopt;
|
||||
}
|
||||
const auto [relative_position, brx_tracked_register] = *brx_info;
|
||||
|
||||
const auto ldc_info = TrackLDC(state, pos, brx_tracked_register);
|
||||
if (!ldc_info) {
|
||||
return std::nullopt;
|
||||
}
|
||||
const auto [buffer_info, ldc_tracked_register] = *ldc_info;
|
||||
|
||||
const auto shl_tracked_register = TrackSHLRegister(state, pos, ldc_tracked_register);
|
||||
if (!shl_tracked_register) {
|
||||
return std::nullopt;
|
||||
}
|
||||
|
||||
const auto entries = TrackIMNMXValue(state, pos, *shl_tracked_register);
|
||||
if (!entries) {
|
||||
return std::nullopt;
|
||||
}
|
||||
|
||||
return BranchIndirectInfo{buffer_info.index, buffer_info.offset, *entries, relative_position};
|
||||
}
|
||||
|
||||
std::pair<ParseResult, ParseInfo> ParseCode(CFGRebuildState& state, u32 address) {
|
||||
|
|
@ -420,17 +428,21 @@ std::pair<ParseResult, ParseInfo> ParseCode(CFGRebuildState& state, u32 address)
|
|||
break;
|
||||
}
|
||||
case OpCode::Id::BRX: {
|
||||
auto tmp = TrackBranchIndirectInfo(state, address, offset);
|
||||
if (tmp) {
|
||||
auto result = *tmp;
|
||||
std::vector<CaseBranch> branches{};
|
||||
s32 pc_target = offset + result.relative_position;
|
||||
for (u32 i = 0; i < result.entries; i++) {
|
||||
auto k = state.locker.ObtainKey(result.buffer, result.offset + i * 4);
|
||||
if (!k) {
|
||||
const auto tmp = TrackBranchIndirectInfo(state, offset);
|
||||
if (!tmp) {
|
||||
LOG_WARNING(HW_GPU, "BRX Track Unsuccesful");
|
||||
return {ParseResult::AbnormalFlow, parse_info};
|
||||
}
|
||||
u32 value = *k;
|
||||
|
||||
const auto result = *tmp;
|
||||
const s32 pc_target = offset + result.relative_position;
|
||||
std::vector<CaseBranch> branches;
|
||||
for (u32 i = 0; i < result.entries; i++) {
|
||||
auto key = state.locker.ObtainKey(result.buffer, result.offset + i * 4);
|
||||
if (!key) {
|
||||
return {ParseResult::AbnormalFlow, parse_info};
|
||||
}
|
||||
u32 value = *key;
|
||||
u32 target = static_cast<u32>((value >> 3) + pc_target);
|
||||
insert_label(state, target);
|
||||
branches.emplace_back(value, target);
|
||||
|
|
@ -440,10 +452,6 @@ std::pair<ParseResult, ParseInfo> ParseCode(CFGRebuildState& state, u32 address)
|
|||
static_cast<u32>(instr.gpr8.Value()), std::move(branches));
|
||||
|
||||
return {ParseResult::ControlCaught, parse_info};
|
||||
} else {
|
||||
LOG_WARNING(HW_GPU, "BRX Track Unsuccesful");
|
||||
}
|
||||
return {ParseResult::AbnormalFlow, parse_info};
|
||||
}
|
||||
default:
|
||||
break;
|
||||
|
|
|
|||
Loading…
Reference in a new issue