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67 lines
1.3 KiB
67 lines
1.3 KiB
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#pragma once
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#include <vector>
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#include <llvm/IR/IRBuilder.h>
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namespace evmcc
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{
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class Stack
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{
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public:
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Stack(llvm::IRBuilder<>& _builder, llvm::Module* _module);
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void push(llvm::Value* _value);
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llvm::Value* pop();
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llvm::Value* top();
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llvm::Value* get(uint32_t _index);
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void set(uint32_t _index, llvm::Value* _value);
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private:
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llvm::IRBuilder<>& m_builder;
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llvm::Value* m_stackVal;
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llvm::Function* m_stackPush;
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llvm::Function* m_stackPop;
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llvm::Function* m_stackGet;
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llvm::Function* m_stackSet;
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};
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/**
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Stack adapter for Basic Block
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Transforms stack to SSA: tracks values and their positions on the imaginary stack used inside a basic block.
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*/
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class BBStack
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{
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public:
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BBStack(Stack& _extStack);
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void push(llvm::Value* _value);
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llvm::Value* pop();
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void dup(size_t _index);
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void swap(size_t _index);
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/**
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Resets stack on basic block change.
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Values left on local stack are pushed on external stack.
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Local stack is empty after this operation and compilation of new basic block can be started.
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*/
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void reset();
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/**
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Dumps values on stack.
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*/
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void clear();
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/// Debug only
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bool empty() const;
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private:
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std::vector<llvm::Value*> m_state; ///< Basic black state vector - current values and their positions
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Stack& m_extStack; ///< External (global) stack
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};
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}
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