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71 lines
3.2 KiB
C++
71 lines
3.2 KiB
C++
//===-- llvm/CodeGen/MFunction.h - Machine Specific Function ----*- C++ -*-===//
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//
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// This class provides a way to represent a function in a machine-specific form.
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// A function is represented as a list of machine specific blocks along with a
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// list of registers that are used to receive arguments for the function.
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//
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// In the machine specific representation for a function, the function may
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// either be in SSA form or in a register based form. When in SSA form, the
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// register numbers are indexes into the RegDefMap that the MFunction contains.
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// This allows accessing SSA use-def information by using the source register
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// number for a use.
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//
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// After register allocation occurs, all of the register numbers in a function
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// refer to real hardware registers and the RegDefMap is cleared.
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//
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//===----------------------------------------------------------------------===//
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#ifndef CODEGEN_MFUNCTION_H
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#define CODEGEN_MFUNCTION_H
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#include "llvm/CodeGen/MBasicBlock.h"
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#include <iosfwd>
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class MInstructionInfo;
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class MFunction {
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iplist<MBasicBlock> BasicBlocks;
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// FIXME: This should contain a pointer to the LLVM function
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public:
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/// print - Provide a way to get a simple debugging dump. This dumps the
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/// machine code in a simple "assembly" language that is not really suitable
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/// for an assembler, but is useful for debugging. This is completely target
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/// independant.
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///
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void print(std::ostream &OS, const MInstructionInfo &MII) const;
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void dump(const MInstructionInfo &MII) const;
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// Provide accessors for the MBasicBlock list...
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typedef iplist<MBasicBlock> BasicBlockListType;
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typedef BasicBlockListType::iterator iterator;
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typedef BasicBlockListType::const_iterator const_iterator;
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typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
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typedef std::reverse_iterator<iterator> reverse_iterator;
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// Provide accessors for basic blocks...
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const BasicBlockListType &getBasicBlockList() const { return BasicBlocks; }
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BasicBlockListType &getBasicBlockList() { return BasicBlocks; }
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//===--------------------------------------------------------------------===//
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// BasicBlock iterator forwarding functions
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//
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iterator begin() { return BasicBlocks.begin(); }
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const_iterator begin() const { return BasicBlocks.begin(); }
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iterator end () { return BasicBlocks.end(); }
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const_iterator end () const { return BasicBlocks.end(); }
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reverse_iterator rbegin() { return BasicBlocks.rbegin(); }
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const_reverse_iterator rbegin() const { return BasicBlocks.rbegin(); }
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reverse_iterator rend () { return BasicBlocks.rend(); }
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const_reverse_iterator rend () const { return BasicBlocks.rend(); }
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unsigned size() const { return BasicBlocks.size(); }
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bool empty() const { return BasicBlocks.empty(); }
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const MBasicBlock &front() const { return BasicBlocks.front(); }
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MBasicBlock &front() { return BasicBlocks.front(); }
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const MBasicBlock &back() const { return BasicBlocks.back(); }
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MBasicBlock &back() { return BasicBlocks.back(); }
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};
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#endif
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