quads.hh

#ifndef MM_QUADS_H
#define MM_QUADS_H

#include <iostream>
#include <string>

enum OpCode {
  
  /* Binary operations */
  OP_PLUS, // z = x op y
  OP_MINUS,
  OP_MULT,
  OP_DIV,
  OP_MOD,
  OP_BIT_AND,
  OP_BIT_XOR,
  OP_BIT_OR,
  OP_SHL,
  OP_SHR,
  
  /* Unary operations */
  OP_UMINUS, // z = -x
  OP_BIT_NOT,// z = !x
  
  /* Conditional jump operations */
  OP_IF_VAL,    // if x goto L
  OP_IF_NOT,    // ifNot x got L
  OP_LT,        // if x relop y goto L
  OP_LTE,
  OP_GT,
  OP_GTE,
  OP_EQ,
  OP_NEQ,
  OP_GOTO,      // goto L
  OP_PARAM,     // push parameter
  OP_CALL,      // y = call p,N
  OP_RETURN,    // return v
  OP_FUNC_START,// function start label
  OP_FUNC_END,  // function end label
  
  /* Copy / Move instructions */
  OP_COPY,      // z = x
  OP_REFER,     // z = &x
  OP_L_DEREF,   // *z = x
  OP_R_DEREF,   // z = *x
  OP_LXC,       // left indexed copy : a[b] = c
  OP_RXC,       // a = b[c]

  /* Convert instructions */
  OP_CONV_TO_CHAR  , // z = (char) x
  OP_CONV_TO_INT   , // z = (int) x
  OP_CONV_TO_DOUBLE, // z = (double) x

  /* Allocators */
  OP_ALLOC,          // z = alloc(rows,cols) , z = alloc(Matrix) , z = alloc(Matrix,Matrix)
  OP_DEALLOC,        // dealloc(z)

  /* Misc. */
  OP_TRANSPOSE,      // z = transpose(x) , where z and x point to a block of same size
  OP_DECLARE         // declare z , just used as a marker
};


// Saw the opportunity and took it.
class Taco {
public:
  OpCode opCode;
  // z is result and x,y are 1st and 2nd operands respectively
  std::string z , x , y;
  
  Taco(const OpCode &code,const std::string&_z="",const std::string&_x="",const std::string&_y="") :
    opCode(code),z(_z),x(_x),y(_y) { }

  // Classify opcodes
  bool isJump() const;
  bool isCopy() const;
  bool isBitwise() const;
  bool isConversion() const;
  
  virtual ~Taco(){}
};

/* 3ACode printer */
std::ostream& operator<<(std::ostream& ,const Taco& ) ;

#endif /* !MM_QUADS_H */