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[Decompiler] Stack Variables (#338)

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* clean up type analysis

* get everything set up

* basic stack variables working

* partial load fix

* most of matrix

* add offline tests
This commit is contained in:
water111
2021-03-27 15:18:59 -04:00
committed by GitHub
parent 7fac11ddf5
commit 64c35ca453
44 changed files with 4223 additions and 387 deletions
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decompiler/analysis/insert_lets.cpp
+6 -2
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@@ -296,6 +296,10 @@ Form* insert_cast_for_let(RegisterAccess dst,
return src;
}
bool register_can_hold_var(const Register& reg) {
return reg.get_kind() == Reg::FPR || reg.get_kind() == Reg::GPR;
}
} // namespace
LetStats insert_lets(const Function& func, Env& env, FormPool& pool, Form* top_level_form) {
@@ -325,7 +329,7 @@ LetStats insert_lets(const Function& func, Env& env, FormPool& pool, Form* top_l
// and add it.
for (auto& access : reg_accesses) {
if (access.reg().get_kind() == Reg::FPR || access.reg().get_kind() == Reg::GPR) {
if (register_can_hold_var(access.reg())) {
auto name = env.get_variable_name(access);
var_info[name].elts_using_var.insert(elt);
var_info[name].var_name = name;
@@ -406,7 +410,7 @@ LetStats insert_lets(const Function& func, Env& env, FormPool& pool, Form* top_l
for (auto& info : sorted_info) {
auto first_form = info.lca_form->at(info.start_idx);
auto first_form_as_set = dynamic_cast<SetVarElement*>(first_form);
if (first_form_as_set &&
if (first_form_as_set && register_can_hold_var(first_form_as_set->dst().reg()) &&
env.get_variable_name(first_form_as_set->dst()) == env.get_variable_name(info.access) &&
!first_form_as_set->info().is_eliminated_coloring_move) {
bool allowed = true;