minix/llvm/passes/include/magic/support/VariableRefs.h

   1 #ifndef VARIABLE_REFS_H
   2 #define VARIABLE_REFS_H
   3
   4 #include <pass.h>
   5
   6 using namespace llvm;
   7
   8 namespace llvm {
   9
  10 class VariableRefs {
  11   public:
  12       VariableRefs();
  13
  14       bool isUnnecessaryInstruction(Instruction* inst) const;
  15       Instruction* getInstruction() const;
  16       bool isInstructionInEntryBlock() const;
  17
  18       void addInstruction(Instruction* inst);
  19       void clear();
  20
  21   private:
  22       Instruction* instruction;
  23       bool instructionInEntryBlock;
  24
  25       void setFunctionEntryInstruction(Function* function);
  26 };
  27
  28 }
  29
  30 #endif