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db48d94270
* clean up * fix up until generic ops * finish kernel * documentation * types * add missing file
70 lines
2.6 KiB
C++
70 lines
2.6 KiB
C++
#pragma once
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#include <optional>
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#include "decompiler/Disasm/Register.h"
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#include "decompiler/IR2/AtomicOp.h"
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namespace decompiler {
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class Form;
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/*!
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* A FormStack is used to track partial expressions when rebuilding the tree structure of
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* GOAL code. Linear sequences of operations are added onto the expression stack.
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*/
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class FormStack {
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public:
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explicit FormStack(bool is_root_stack) : m_is_root_stack(is_root_stack) {}
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void push_value_to_reg(Variable var,
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Form* value,
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bool sequence_point,
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const SetVarInfo& info = {});
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void push_non_seq_reg_to_reg(const Variable& dst,
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const Variable& src,
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Form* src_as_form,
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const SetVarInfo& info = {});
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void push_value_to_reg_dead(Variable var,
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Form* value,
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bool sequence_point,
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const SetVarInfo& info = {});
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void push_form_element(FormElement* elt, bool sequence_point);
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Form* pop_reg(const Variable& var,
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const RegSet& barrier,
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const Env& env,
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bool allow_side_effects,
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int begin_idx = -1);
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Form* pop_reg(Register reg,
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const RegSet& barrier,
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const Env& env,
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bool allow_side_effects,
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int begin_idx = -1);
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FormElement* pop_back(FormPool& pool);
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Form* unsafe_peek(Register reg, const Env& env);
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bool is_single_expression();
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std::vector<FormElement*> rewrite(FormPool& pool);
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std::string print(const Env& env);
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bool is_root() const { return m_is_root_stack; }
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private:
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struct StackEntry {
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bool active = true; // should this appear in the output?
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std::optional<Variable> destination; // what register we are setting (or nullopt if no dest.)
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std::optional<Variable> non_seq_source; // source variable, if we are setting var to var.
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Form* source = nullptr; // the value we are setting the register to.
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FormElement* elt = nullptr;
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bool sequence_point = false;
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TP_Type type;
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SetVarInfo set_info;
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std::string print(const Env& env) const;
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};
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std::vector<StackEntry> m_stack;
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bool m_is_root_stack = false;
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};
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void rewrite_to_get_var(std::vector<FormElement*>& default_result,
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FormPool& pool,
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const Variable& var);
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std::vector<FormElement*> rewrite_to_get_var(FormStack& stack, FormPool& pool, const Variable& var);
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} // namespace decompiler
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