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im bored.

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This commit is contained in:
ManDude
2022-04-17 06:14:30 +01:00
parent d827db20b3
commit 070e957ce8
54 changed files with 275 additions and 282 deletions
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decompiler/analysis/reg_usage.cpp
+11 -11
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@@ -18,8 +18,8 @@ void phase1(const FunctionAtomicOps& ops, int block_id, RegUsageInfo* out) {
for (int i = end_op; i-- > start_op;) {
const auto& instr = ops.ops.at(i);
auto read = instr->read_regs();
auto write = instr->write_regs();
auto& read = instr->read_regs();
auto& write = instr->write_regs();
auto& lv = out->op.at(i).live;
auto& dd = out->op.at(i).dead;
@@ -77,13 +77,13 @@ bool phase2(const std::vector<BasicBlock>& blocks, int block_id, RegUsageInfo* i
if (s == -1) {
continue;
}
for (auto in : info->block.at(s).input) {
for (const auto& in : info->block.at(s).input) {
out.insert(in);
}
}
RegSet in = block_info.use;
for (auto x : out) {
for (const auto& x : out) {
if (!in_set(block_info.defs, x)) {
in.insert(x);
}
@@ -108,7 +108,7 @@ void phase3(const FunctionAtomicOps& ops,
if (s == -1) {
continue;
}
for (auto i : info->block.at(s).input) {
for (const auto& i : info->block.at(s).input) {
live_local.insert(i);
}
}
@@ -121,7 +121,7 @@ void phase3(const FunctionAtomicOps& ops,
auto& dd = info->op.at(i).dead;
RegSet new_live = lv;
for (auto x : live_local) {
for (const auto& x : live_local) {
if (!in_set(dd, x)) {
new_live.insert(x);
}
@@ -179,7 +179,7 @@ RegUsageInfo analyze_ir2_register_usage(const Function& function) {
auto& first_op_live_out = result.op.at(0).live;
RegSet first_op_live_in;
first_op_live_in.insert(first_op_live_out.begin(), first_op_live_out.end());
for (auto reg : ops->ops.at(0)->write_regs()) {
for (auto& reg : ops->ops.at(0)->write_regs()) {
first_op_live_in.erase(reg);
}
first_op_live_in.insert(ops->ops.at(0)->read_regs().begin(), ops->ops.at(0)->read_regs().end());
@@ -195,13 +195,13 @@ RegUsageInfo analyze_ir2_register_usage(const Function& function) {
auto& op_info = result.op.at(i);
// look at each register we read from:
for (auto reg : op->read_regs()) {
for (auto& reg : op->read_regs()) {
if (op_info.live.find(reg) == op_info.live.end()) {
// not live out, this means we must consume it.
op_info.consumes.insert(reg);
} else {
// the register has a live value, but is it a new value?
for (auto wr : op->write_regs()) {
for (const auto& wr : op->write_regs()) {
if (wr == reg) {
op_info.consumes.insert(reg);
}
@@ -210,7 +210,7 @@ RegUsageInfo analyze_ir2_register_usage(const Function& function) {
}
// also useful to know, written and unused.
for (auto reg : op->write_regs()) {
for (auto& reg : op->write_regs()) {
if (op_info.live.find(reg) == op_info.live.end()) {
// fmt::print("op {} wau {}\n", op->to_string(function.ir2.env), reg.to_string());
op_info.written_and_unused.insert(reg);
@@ -222,4 +222,4 @@ RegUsageInfo analyze_ir2_register_usage(const Function& function) {
ASSERT(result.op.size() == ops->ops.size());
return result;
}
} // namespace decompiler
} // namespace decompiler