mirror of
https://github.com/yuzu-emu/yuzu.git
synced 2024-12-26 04:10:06 +00:00
Shader_IR: Implement Fast BRX and allow multi-branches in the CFG.
This commit is contained in:
Fernando Sahmkow
FernandoS27
parent
acd6441134
commit
8909f52166
@ -2338,6 +2338,11 @@ public:
|
||||
inner += expr.value ? "true" : "false";
|
||||
}
|
||||
|
||||
void operator()(VideoCommon::Shader::ExprGprEqual& expr) {
|
||||
inner +=
|
||||
"( ftou(" + decomp.GetRegister(expr.gpr) + ") == " + std::to_string(expr.value) + ')';
|
||||
}
|
||||
|
||||
const std::string& GetResult() const {
|
||||
return inner;
|
||||
}
|
||||
|
||||
@ -1704,6 +1704,13 @@ public:
|
||||
return expr.value ? decomp.v_true : decomp.v_false;
|
||||
}
|
||||
|
||||
Id operator()(const ExprGprEqual& expr) {
|
||||
const Id target = decomp.Constant(decomp.t_uint, expr.value);
|
||||
const Id gpr = decomp.BitcastTo<Type::Uint>(
|
||||
decomp.Emit(decomp.OpLoad(decomp.t_float, decomp.registers.at(expr.gpr))));
|
||||
return decomp.Emit(decomp.OpLogicalEqual(decomp.t_uint, gpr, target));
|
||||
}
|
||||
|
||||
Id Visit(const Expr& node) {
|
||||
return std::visit(*this, *node);
|
||||
}
|
||||
|
||||
@ -228,6 +228,10 @@ public:
|
||||
inner += expr.value ? "true" : "false";
|
||||
}
|
||||
|
||||
void operator()(ExprGprEqual const& expr) {
|
||||
inner += "( gpr_" + std::to_string(expr.gpr) + " == " + std::to_string(expr.value) + ')';
|
||||
}
|
||||
|
||||
const std::string& GetResult() const {
|
||||
return inner;
|
||||
}
|
||||
|
||||
@ -35,14 +35,24 @@ struct BlockStack {
|
||||
std::stack<u32> pbk_stack{};
|
||||
};
|
||||
|
||||
struct BlockBranchInfo {
|
||||
Condition condition{};
|
||||
s32 address{exit_branch};
|
||||
bool kill{};
|
||||
bool is_sync{};
|
||||
bool is_brk{};
|
||||
bool ignore{};
|
||||
};
|
||||
template <typename T, typename... Args>
|
||||
BlockBranchInfo MakeBranchInfo(Args&&... args) {
|
||||
static_assert(std::is_convertible_v<T, BranchData>);
|
||||
return std::make_shared<BranchData>(T(std::forward<Args>(args)...));
|
||||
}
|
||||
|
||||
bool BlockBranchInfoAreEqual(BlockBranchInfo first, BlockBranchInfo second) {
|
||||
return false; //(*first) == (*second);
|
||||
}
|
||||
|
||||
bool BlockBranchIsIgnored(BlockBranchInfo first) {
|
||||
bool ignore = false;
|
||||
if (std::holds_alternative<SingleBranch>(*first)) {
|
||||
auto branch = std::get_if<SingleBranch>(first.get());
|
||||
ignore = branch->ignore;
|
||||
}
|
||||
return ignore;
|
||||
}
|
||||
|
||||
struct BlockInfo {
|
||||
u32 start{};
|
||||
@ -234,6 +244,7 @@ std::pair<ParseResult, ParseInfo> ParseCode(CFGRebuildState& state, u32 address)
|
||||
u32 offset = static_cast<u32>(address);
|
||||
const u32 end_address = static_cast<u32>(state.program_size / sizeof(Instruction));
|
||||
ParseInfo parse_info{};
|
||||
SingleBranch single_branch{};
|
||||
|
||||
const auto insert_label = [](CFGRebuildState& state, u32 address) {
|
||||
const auto pair = state.labels.emplace(address);
|
||||
@ -246,13 +257,14 @@ std::pair<ParseResult, ParseInfo> ParseCode(CFGRebuildState& state, u32 address)
|
||||
if (offset >= end_address) {
|
||||
// ASSERT_OR_EXECUTE can't be used, as it ignores the break
|
||||
ASSERT_MSG(false, "Shader passed the current limit!");
|
||||
parse_info.branch_info.address = exit_branch;
|
||||
parse_info.branch_info.ignore = false;
|
||||
|
||||
single_branch.address = exit_branch;
|
||||
single_branch.ignore = false;
|
||||
break;
|
||||
}
|
||||
if (state.registered.count(offset) != 0) {
|
||||
parse_info.branch_info.address = offset;
|
||||
parse_info.branch_info.ignore = true;
|
||||
single_branch.address = offset;
|
||||
single_branch.ignore = true;
|
||||
break;
|
||||
}
|
||||
if (IsSchedInstruction(offset, state.start)) {
|
||||
@ -269,24 +281,26 @@ std::pair<ParseResult, ParseInfo> ParseCode(CFGRebuildState& state, u32 address)
|
||||
switch (opcode->get().GetId()) {
|
||||
case OpCode::Id::EXIT: {
|
||||
const auto pred_index = static_cast<u32>(instr.pred.pred_index);
|
||||
parse_info.branch_info.condition.predicate =
|
||||
GetPredicate(pred_index, instr.negate_pred != 0);
|
||||
if (parse_info.branch_info.condition.predicate == Pred::NeverExecute) {
|
||||
single_branch.condition.predicate = GetPredicate(pred_index, instr.negate_pred != 0);
|
||||
if (single_branch.condition.predicate == Pred::NeverExecute) {
|
||||
offset++;
|
||||
continue;
|
||||
}
|
||||
const ConditionCode cc = instr.flow_condition_code;
|
||||
parse_info.branch_info.condition.cc = cc;
|
||||
single_branch.condition.cc = cc;
|
||||
if (cc == ConditionCode::F) {
|
||||
offset++;
|
||||
continue;
|
||||
}
|
||||
parse_info.branch_info.address = exit_branch;
|
||||
parse_info.branch_info.kill = false;
|
||||
parse_info.branch_info.is_sync = false;
|
||||
parse_info.branch_info.is_brk = false;
|
||||
parse_info.branch_info.ignore = false;
|
||||
single_branch.address = exit_branch;
|
||||
single_branch.kill = false;
|
||||
single_branch.is_sync = false;
|
||||
single_branch.is_brk = false;
|
||||
single_branch.ignore = false;
|
||||
parse_info.end_address = offset;
|
||||
parse_info.branch_info = MakeBranchInfo<SingleBranch>(
|
||||
single_branch.condition, single_branch.address, single_branch.kill,
|
||||
single_branch.is_sync, single_branch.is_brk, single_branch.ignore);
|
||||
|
||||
return {ParseResult::ControlCaught, parse_info};
|
||||
}
|
||||
@ -295,99 +309,107 @@ std::pair<ParseResult, ParseInfo> ParseCode(CFGRebuildState& state, u32 address)
|
||||
return {ParseResult::AbnormalFlow, parse_info};
|
||||
}
|
||||
const auto pred_index = static_cast<u32>(instr.pred.pred_index);
|
||||
parse_info.branch_info.condition.predicate =
|
||||
GetPredicate(pred_index, instr.negate_pred != 0);
|
||||
if (parse_info.branch_info.condition.predicate == Pred::NeverExecute) {
|
||||
single_branch.condition.predicate = GetPredicate(pred_index, instr.negate_pred != 0);
|
||||
if (single_branch.condition.predicate == Pred::NeverExecute) {
|
||||
offset++;
|
||||
continue;
|
||||
}
|
||||
const ConditionCode cc = instr.flow_condition_code;
|
||||
parse_info.branch_info.condition.cc = cc;
|
||||
single_branch.condition.cc = cc;
|
||||
if (cc == ConditionCode::F) {
|
||||
offset++;
|
||||
continue;
|
||||
}
|
||||
const u32 branch_offset = offset + instr.bra.GetBranchTarget();
|
||||
if (branch_offset == 0) {
|
||||
parse_info.branch_info.address = exit_branch;
|
||||
single_branch.address = exit_branch;
|
||||
} else {
|
||||
parse_info.branch_info.address = branch_offset;
|
||||
single_branch.address = branch_offset;
|
||||
}
|
||||
insert_label(state, branch_offset);
|
||||
parse_info.branch_info.kill = false;
|
||||
parse_info.branch_info.is_sync = false;
|
||||
parse_info.branch_info.is_brk = false;
|
||||
parse_info.branch_info.ignore = false;
|
||||
single_branch.kill = false;
|
||||
single_branch.is_sync = false;
|
||||
single_branch.is_brk = false;
|
||||
single_branch.ignore = false;
|
||||
parse_info.end_address = offset;
|
||||
parse_info.branch_info = MakeBranchInfo<SingleBranch>(
|
||||
single_branch.condition, single_branch.address, single_branch.kill,
|
||||
single_branch.is_sync, single_branch.is_brk, single_branch.ignore);
|
||||
|
||||
return {ParseResult::ControlCaught, parse_info};
|
||||
}
|
||||
case OpCode::Id::SYNC: {
|
||||
const auto pred_index = static_cast<u32>(instr.pred.pred_index);
|
||||
parse_info.branch_info.condition.predicate =
|
||||
GetPredicate(pred_index, instr.negate_pred != 0);
|
||||
if (parse_info.branch_info.condition.predicate == Pred::NeverExecute) {
|
||||
single_branch.condition.predicate = GetPredicate(pred_index, instr.negate_pred != 0);
|
||||
if (single_branch.condition.predicate == Pred::NeverExecute) {
|
||||
offset++;
|
||||
continue;
|
||||
}
|
||||
const ConditionCode cc = instr.flow_condition_code;
|
||||
parse_info.branch_info.condition.cc = cc;
|
||||
single_branch.condition.cc = cc;
|
||||
if (cc == ConditionCode::F) {
|
||||
offset++;
|
||||
continue;
|
||||
}
|
||||
parse_info.branch_info.address = unassigned_branch;
|
||||
parse_info.branch_info.kill = false;
|
||||
parse_info.branch_info.is_sync = true;
|
||||
parse_info.branch_info.is_brk = false;
|
||||
parse_info.branch_info.ignore = false;
|
||||
single_branch.address = unassigned_branch;
|
||||
single_branch.kill = false;
|
||||
single_branch.is_sync = true;
|
||||
single_branch.is_brk = false;
|
||||
single_branch.ignore = false;
|
||||
parse_info.end_address = offset;
|
||||
parse_info.branch_info = MakeBranchInfo<SingleBranch>(
|
||||
single_branch.condition, single_branch.address, single_branch.kill,
|
||||
single_branch.is_sync, single_branch.is_brk, single_branch.ignore);
|
||||
|
||||
return {ParseResult::ControlCaught, parse_info};
|
||||
}
|
||||
case OpCode::Id::BRK: {
|
||||
const auto pred_index = static_cast<u32>(instr.pred.pred_index);
|
||||
parse_info.branch_info.condition.predicate =
|
||||
GetPredicate(pred_index, instr.negate_pred != 0);
|
||||
if (parse_info.branch_info.condition.predicate == Pred::NeverExecute) {
|
||||
single_branch.condition.predicate = GetPredicate(pred_index, instr.negate_pred != 0);
|
||||
if (single_branch.condition.predicate == Pred::NeverExecute) {
|
||||
offset++;
|
||||
continue;
|
||||
}
|
||||
const ConditionCode cc = instr.flow_condition_code;
|
||||
parse_info.branch_info.condition.cc = cc;
|
||||
single_branch.condition.cc = cc;
|
||||
if (cc == ConditionCode::F) {
|
||||
offset++;
|
||||
continue;
|
||||
}
|
||||
parse_info.branch_info.address = unassigned_branch;
|
||||
parse_info.branch_info.kill = false;
|
||||
parse_info.branch_info.is_sync = false;
|
||||
parse_info.branch_info.is_brk = true;
|
||||
parse_info.branch_info.ignore = false;
|
||||
single_branch.address = unassigned_branch;
|
||||
single_branch.kill = false;
|
||||
single_branch.is_sync = false;
|
||||
single_branch.is_brk = true;
|
||||
single_branch.ignore = false;
|
||||
parse_info.end_address = offset;
|
||||
parse_info.branch_info = MakeBranchInfo<SingleBranch>(
|
||||
single_branch.condition, single_branch.address, single_branch.kill,
|
||||
single_branch.is_sync, single_branch.is_brk, single_branch.ignore);
|
||||
|
||||
return {ParseResult::ControlCaught, parse_info};
|
||||
}
|
||||
case OpCode::Id::KIL: {
|
||||
const auto pred_index = static_cast<u32>(instr.pred.pred_index);
|
||||
parse_info.branch_info.condition.predicate =
|
||||
GetPredicate(pred_index, instr.negate_pred != 0);
|
||||
if (parse_info.branch_info.condition.predicate == Pred::NeverExecute) {
|
||||
single_branch.condition.predicate = GetPredicate(pred_index, instr.negate_pred != 0);
|
||||
if (single_branch.condition.predicate == Pred::NeverExecute) {
|
||||
offset++;
|
||||
continue;
|
||||
}
|
||||
const ConditionCode cc = instr.flow_condition_code;
|
||||
parse_info.branch_info.condition.cc = cc;
|
||||
single_branch.condition.cc = cc;
|
||||
if (cc == ConditionCode::F) {
|
||||
offset++;
|
||||
continue;
|
||||
}
|
||||
parse_info.branch_info.address = exit_branch;
|
||||
parse_info.branch_info.kill = true;
|
||||
parse_info.branch_info.is_sync = false;
|
||||
parse_info.branch_info.is_brk = false;
|
||||
parse_info.branch_info.ignore = false;
|
||||
single_branch.address = exit_branch;
|
||||
single_branch.kill = true;
|
||||
single_branch.is_sync = false;
|
||||
single_branch.is_brk = false;
|
||||
single_branch.ignore = false;
|
||||
parse_info.end_address = offset;
|
||||
parse_info.branch_info = MakeBranchInfo<SingleBranch>(
|
||||
single_branch.condition, single_branch.address, single_branch.kill,
|
||||
single_branch.is_sync, single_branch.is_brk, single_branch.ignore);
|
||||
|
||||
return {ParseResult::ControlCaught, parse_info};
|
||||
}
|
||||
@ -407,16 +429,25 @@ std::pair<ParseResult, ParseInfo> ParseCode(CFGRebuildState& state, u32 address)
|
||||
auto tmp = TrackBranchIndirectInfo(state, address, offset);
|
||||
if (tmp) {
|
||||
auto result = *tmp;
|
||||
std::string entries{};
|
||||
std::vector<CaseBranch> branches{};
|
||||
s32 pc_target = offset + result.relative_position;
|
||||
for (u32 i = 0; i < result.entries; i++) {
|
||||
auto k = locker.ObtainKey(result.buffer, result.offset + i * 4);
|
||||
entries = entries + std::to_string(*k) + '\n';
|
||||
auto k = state.locker.ObtainKey(result.buffer, result.offset + i * 4);
|
||||
if (!k) {
|
||||
return {ParseResult::AbnormalFlow, parse_info};
|
||||
}
|
||||
LOG_CRITICAL(HW_GPU,
|
||||
"Track Successful, BRX: buffer:{}, offset:{}, entries:{}, inner:\n{}",
|
||||
result.buffer, result.offset, result.entries, entries);
|
||||
u32 value = *k;
|
||||
u32 target = static_cast<u32>((value >> 3) + pc_target);
|
||||
insert_label(state, target);
|
||||
branches.emplace_back(value, target);
|
||||
}
|
||||
parse_info.end_address = offset;
|
||||
parse_info.branch_info =
|
||||
MakeBranchInfo<MultiBranch>(static_cast<u32>(instr.gpr8.Value()), branches);
|
||||
|
||||
return {ParseResult::ControlCaught, parse_info};
|
||||
} else {
|
||||
LOG_CRITICAL(HW_GPU, "Track Unsuccesful");
|
||||
LOG_WARNING(HW_GPU, "BRX Track Unsuccesful");
|
||||
}
|
||||
return {ParseResult::AbnormalFlow, parse_info};
|
||||
}
|
||||
@ -426,10 +457,13 @@ std::pair<ParseResult, ParseInfo> ParseCode(CFGRebuildState& state, u32 address)
|
||||
|
||||
offset++;
|
||||
}
|
||||
parse_info.branch_info.kill = false;
|
||||
parse_info.branch_info.is_sync = false;
|
||||
parse_info.branch_info.is_brk = false;
|
||||
single_branch.kill = false;
|
||||
single_branch.is_sync = false;
|
||||
single_branch.is_brk = false;
|
||||
parse_info.end_address = offset - 1;
|
||||
parse_info.branch_info = MakeBranchInfo<SingleBranch>(
|
||||
single_branch.condition, single_branch.address, single_branch.kill, single_branch.is_sync,
|
||||
single_branch.is_brk, single_branch.ignore);
|
||||
return {ParseResult::BlockEnd, parse_info};
|
||||
}
|
||||
|
||||
@ -453,9 +487,10 @@ bool TryInspectAddress(CFGRebuildState& state) {
|
||||
BlockInfo& current_block = state.block_info[block_index];
|
||||
current_block.end = address - 1;
|
||||
new_block.branch = current_block.branch;
|
||||
BlockBranchInfo forward_branch{};
|
||||
forward_branch.address = address;
|
||||
forward_branch.ignore = true;
|
||||
BlockBranchInfo forward_branch = MakeBranchInfo<SingleBranch>();
|
||||
auto branch = std::get_if<SingleBranch>(forward_branch.get());
|
||||
branch->address = address;
|
||||
branch->ignore = true;
|
||||
current_block.branch = forward_branch;
|
||||
return true;
|
||||
}
|
||||
@ -470,14 +505,17 @@ bool TryInspectAddress(CFGRebuildState& state) {
|
||||
|
||||
BlockInfo& block_info = CreateBlockInfo(state, address, parse_info.end_address);
|
||||
block_info.branch = parse_info.branch_info;
|
||||
if (parse_info.branch_info.condition.IsUnconditional()) {
|
||||
if (std::holds_alternative<SingleBranch>(*block_info.branch)) {
|
||||
auto branch = std::get_if<SingleBranch>(block_info.branch.get());
|
||||
if (branch->condition.IsUnconditional()) {
|
||||
return true;
|
||||
}
|
||||
|
||||
const u32 fallthrough_address = parse_info.end_address + 1;
|
||||
state.inspect_queries.push_front(fallthrough_address);
|
||||
return true;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
bool TryQuery(CFGRebuildState& state) {
|
||||
const auto gather_labels = [](std::stack<u32>& cc, std::map<u32, u32>& labels,
|
||||
@ -513,31 +551,41 @@ bool TryQuery(CFGRebuildState& state) {
|
||||
state.queries.pop_front();
|
||||
gather_labels(q2.ssy_stack, state.ssy_labels, block);
|
||||
gather_labels(q2.pbk_stack, state.pbk_labels, block);
|
||||
if (!block.branch.condition.IsUnconditional()) {
|
||||
if (std::holds_alternative<SingleBranch>(*block.branch)) {
|
||||
auto branch = std::get_if<SingleBranch>(block.branch.get());
|
||||
if (!branch->condition.IsUnconditional()) {
|
||||
q2.address = block.end + 1;
|
||||
state.queries.push_back(q2);
|
||||
}
|
||||
|
||||
Query conditional_query{q2};
|
||||
if (block.branch.is_sync) {
|
||||
if (block.branch.address == unassigned_branch) {
|
||||
block.branch.address = conditional_query.ssy_stack.top();
|
||||
if (branch->is_sync) {
|
||||
if (branch->address == unassigned_branch) {
|
||||
branch->address = conditional_query.ssy_stack.top();
|
||||
}
|
||||
conditional_query.ssy_stack.pop();
|
||||
}
|
||||
if (block.branch.is_brk) {
|
||||
if (block.branch.address == unassigned_branch) {
|
||||
block.branch.address = conditional_query.pbk_stack.top();
|
||||
if (branch->is_brk) {
|
||||
if (branch->address == unassigned_branch) {
|
||||
branch->address = conditional_query.pbk_stack.top();
|
||||
}
|
||||
conditional_query.pbk_stack.pop();
|
||||
}
|
||||
conditional_query.address = block.branch.address;
|
||||
conditional_query.address = branch->address;
|
||||
state.queries.push_back(std::move(conditional_query));
|
||||
return true;
|
||||
}
|
||||
auto multi_branch = std::get_if<MultiBranch>(block.branch.get());
|
||||
for (auto& branch_case : multi_branch->branches) {
|
||||
Query conditional_query{q2};
|
||||
conditional_query.address = branch_case.address;
|
||||
state.queries.push_back(std::move(conditional_query));
|
||||
}
|
||||
return true;
|
||||
}
|
||||
} // Anonymous namespace
|
||||
|
||||
void InsertBranch(ASTManager& mm, const BlockBranchInfo& branch) {
|
||||
void InsertBranch(ASTManager& mm, const BlockBranchInfo& branch_info) {
|
||||
const auto get_expr = ([&](const Condition& cond) -> Expr {
|
||||
Expr result{};
|
||||
if (cond.cc != ConditionCode::T) {
|
||||
@ -564,15 +612,24 @@ void InsertBranch(ASTManager& mm, const BlockBranchInfo& branch) {
|
||||
}
|
||||
return MakeExpr<ExprBoolean>(true);
|
||||
});
|
||||
if (branch.address < 0) {
|
||||
if (branch.kill) {
|
||||
mm.InsertReturn(get_expr(branch.condition), true);
|
||||
if (std::holds_alternative<SingleBranch>(*branch_info)) {
|
||||
auto branch = std::get_if<SingleBranch>(branch_info.get());
|
||||
if (branch->address < 0) {
|
||||
if (branch->kill) {
|
||||
mm.InsertReturn(get_expr(branch->condition), true);
|
||||
return;
|
||||
}
|
||||
mm.InsertReturn(get_expr(branch.condition), false);
|
||||
mm.InsertReturn(get_expr(branch->condition), false);
|
||||
return;
|
||||
}
|
||||
mm.InsertGoto(get_expr(branch.condition), branch.address);
|
||||
mm.InsertGoto(get_expr(branch->condition), branch->address);
|
||||
return;
|
||||
}
|
||||
auto multi_branch = std::get_if<MultiBranch>(branch_info.get());
|
||||
for (auto& branch_case : multi_branch->branches) {
|
||||
mm.InsertGoto(MakeExpr<ExprGprEqual>(multi_branch->gpr, branch_case.cmp_value),
|
||||
branch_case.address);
|
||||
}
|
||||
}
|
||||
|
||||
void DecompileShader(CFGRebuildState& state) {
|
||||
@ -584,9 +641,10 @@ void DecompileShader(CFGRebuildState& state) {
|
||||
if (state.labels.count(block.start) != 0) {
|
||||
state.manager->InsertLabel(block.start);
|
||||
}
|
||||
u32 end = block.branch.ignore ? block.end + 1 : block.end;
|
||||
const bool ignore = BlockBranchIsIgnored(block.branch);
|
||||
u32 end = ignore ? block.end + 1 : block.end;
|
||||
state.manager->InsertBlock(block.start, end);
|
||||
if (!block.branch.ignore) {
|
||||
if (!ignore) {
|
||||
InsertBranch(*state.manager, block.branch);
|
||||
}
|
||||
}
|
||||
@ -668,11 +726,9 @@ std::unique_ptr<ShaderCharacteristics> ScanFlow(const ProgramCode& program_code,
|
||||
ShaderBlock new_block{};
|
||||
new_block.start = block.start;
|
||||
new_block.end = block.end;
|
||||
new_block.ignore_branch = block.branch.ignore;
|
||||
new_block.ignore_branch = BlockBranchIsIgnored(block.branch);
|
||||
if (!new_block.ignore_branch) {
|
||||
new_block.branch.cond = block.branch.condition;
|
||||
new_block.branch.kills = block.branch.kill;
|
||||
new_block.branch.address = block.branch.address;
|
||||
new_block.branch = block.branch;
|
||||
}
|
||||
result_out->end = std::max(result_out->end, block.end);
|
||||
result_out->blocks.push_back(new_block);
|
||||
|
||||
@ -7,6 +7,7 @@
|
||||
#include <list>
|
||||
#include <optional>
|
||||
#include <set>
|
||||
#include <variant>
|
||||
|
||||
#include "video_core/engines/shader_bytecode.h"
|
||||
#include "video_core/shader/ast.h"
|
||||
@ -37,29 +38,57 @@ struct Condition {
|
||||
}
|
||||
};
|
||||
|
||||
struct ShaderBlock {
|
||||
struct Branch {
|
||||
Condition cond{};
|
||||
bool kills{};
|
||||
s32 address{};
|
||||
class SingleBranch {
|
||||
public:
|
||||
SingleBranch() = default;
|
||||
SingleBranch(Condition condition, s32 address, bool kill, bool is_sync, bool is_brk,
|
||||
bool ignore)
|
||||
: condition{condition}, address{address}, kill{kill}, is_sync{is_sync}, is_brk{is_brk},
|
||||
ignore{ignore} {}
|
||||
|
||||
bool operator==(const Branch& b) const {
|
||||
return std::tie(cond, kills, address) == std::tie(b.cond, b.kills, b.address);
|
||||
bool operator==(const SingleBranch& b) const {
|
||||
return std::tie(condition, address, kill, is_sync, is_brk, ignore) ==
|
||||
std::tie(b.condition, b.address, b.kill, b.is_sync, b.is_brk, b.ignore);
|
||||
}
|
||||
|
||||
bool operator!=(const Branch& b) const {
|
||||
return !operator==(b);
|
||||
}
|
||||
Condition condition{};
|
||||
s32 address{exit_branch};
|
||||
bool kill{};
|
||||
bool is_sync{};
|
||||
bool is_brk{};
|
||||
bool ignore{};
|
||||
};
|
||||
|
||||
struct CaseBranch {
|
||||
CaseBranch(u32 cmp_value, u32 address) : cmp_value{cmp_value}, address{address} {}
|
||||
u32 cmp_value;
|
||||
u32 address;
|
||||
};
|
||||
|
||||
class MultiBranch {
|
||||
public:
|
||||
MultiBranch(u32 gpr, std::vector<CaseBranch>& branches)
|
||||
: gpr{gpr}, branches{std::move(branches)} {}
|
||||
|
||||
u32 gpr{};
|
||||
std::vector<CaseBranch> branches{};
|
||||
};
|
||||
|
||||
using BranchData = std::variant<SingleBranch, MultiBranch>;
|
||||
using BlockBranchInfo = std::shared_ptr<BranchData>;
|
||||
|
||||
bool BlockBranchInfoAreEqual(BlockBranchInfo first, BlockBranchInfo second);
|
||||
|
||||
struct ShaderBlock {
|
||||
u32 start{};
|
||||
u32 end{};
|
||||
bool ignore_branch{};
|
||||
Branch branch{};
|
||||
BlockBranchInfo branch{};
|
||||
|
||||
bool operator==(const ShaderBlock& sb) const {
|
||||
return std::tie(start, end, ignore_branch, branch) ==
|
||||
std::tie(sb.start, sb.end, sb.ignore_branch, sb.branch);
|
||||
return std::tie(start, end, ignore_branch) ==
|
||||
std::tie(sb.start, sb.end, sb.ignore_branch) &&
|
||||
BlockBranchInfoAreEqual(branch, sb.branch);
|
||||
}
|
||||
|
||||
bool operator!=(const ShaderBlock& sb) const {
|
||||
|
||||
@ -198,24 +198,38 @@ void ShaderIR::InsertControlFlow(NodeBlock& bb, const ShaderBlock& block) {
|
||||
}
|
||||
return result;
|
||||
};
|
||||
if (block.branch.address < 0) {
|
||||
if (block.branch.kills) {
|
||||
if (std::holds_alternative<SingleBranch>(*block.branch)) {
|
||||
auto branch = std::get_if<SingleBranch>(block.branch.get());
|
||||
if (branch->address < 0) {
|
||||
if (branch->kill) {
|
||||
Node n = Operation(OperationCode::Discard);
|
||||
n = apply_conditions(block.branch.cond, n);
|
||||
n = apply_conditions(branch->condition, n);
|
||||
bb.push_back(n);
|
||||
global_code.push_back(n);
|
||||
return;
|
||||
}
|
||||
Node n = Operation(OperationCode::Exit);
|
||||
n = apply_conditions(block.branch.cond, n);
|
||||
n = apply_conditions(branch->condition, n);
|
||||
bb.push_back(n);
|
||||
global_code.push_back(n);
|
||||
return;
|
||||
}
|
||||
Node n = Operation(OperationCode::Branch, Immediate(block.branch.address));
|
||||
n = apply_conditions(block.branch.cond, n);
|
||||
Node n = Operation(OperationCode::Branch, Immediate(branch->address));
|
||||
n = apply_conditions(branch->condition, n);
|
||||
bb.push_back(n);
|
||||
global_code.push_back(n);
|
||||
return;
|
||||
}
|
||||
auto multi_branch = std::get_if<MultiBranch>(block.branch.get());
|
||||
Node op_a = GetRegister(multi_branch->gpr);
|
||||
for (auto& branch_case : multi_branch->branches) {
|
||||
Node n = Operation(OperationCode::Branch, Immediate(branch_case.address));
|
||||
Node op_b = Immediate(branch_case.cmp_value);
|
||||
Node condition = GetPredicateComparisonInteger(Tegra::Shader::PredCondition::Equal, false, op_a, op_b);
|
||||
auto result = Conditional(condition, {n});
|
||||
bb.push_back(result);
|
||||
global_code.push_back(result);
|
||||
}
|
||||
}
|
||||
|
||||
u32 ShaderIR::DecodeInstr(NodeBlock& bb, u32 pc) {
|
||||
|
||||
@ -17,13 +17,14 @@ using Tegra::Shader::Pred;
|
||||
class ExprAnd;
|
||||
class ExprBoolean;
|
||||
class ExprCondCode;
|
||||
class ExprGprEqual;
|
||||
class ExprNot;
|
||||
class ExprOr;
|
||||
class ExprPredicate;
|
||||
class ExprVar;
|
||||
|
||||
using ExprData =
|
||||
std::variant<ExprVar, ExprCondCode, ExprPredicate, ExprNot, ExprOr, ExprAnd, ExprBoolean>;
|
||||
using ExprData = std::variant<ExprVar, ExprCondCode, ExprPredicate, ExprNot, ExprOr, ExprAnd,
|
||||
ExprBoolean, ExprGprEqual>;
|
||||
using Expr = std::shared_ptr<ExprData>;
|
||||
|
||||
class ExprAnd final {
|
||||
@ -118,6 +119,18 @@ public:
|
||||
bool value;
|
||||
};
|
||||
|
||||
class ExprGprEqual final {
|
||||
public:
|
||||
ExprGprEqual(u32 gpr, u32 value) : gpr{gpr}, value{value} {}
|
||||
|
||||
bool operator==(const ExprGprEqual& b) const {
|
||||
return gpr == b.gpr && value == b.value;
|
||||
}
|
||||
|
||||
u32 gpr;
|
||||
u32 value;
|
||||
};
|
||||
|
||||
template <typename T, typename... Args>
|
||||
Expr MakeExpr(Args&&... args) {
|
||||
static_assert(std::is_convertible_v<T, ExprData>);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user