Three-Address Code (Quadraples) 。A quadraple is: x :y op z where x,y and z are names,constants or compiler-generated temporaries;op is any operator. But we may also the following notation for quadraples(much better notation because it looks like a machine code instruction) op yizIx apply operator op to y and z,and store the result in x. ·We use the term“three-address code”because each statement usually contains three addresses(two for operands,one for the result). CS308 Compiler Theory 3Three-Address Code (Quadraples) • A quadraple is: x := y op z where x, y and z are names, constants or compiler-generated temporaries; op is any operator. • But we may also the following notation for quadraples (much better notation because it looks like a machine code instruction) op y,z,x apply operator op to y and z, and store the result in x. • We use the term “three-address code” because each statement usually t i th dd (t f d f th lt) CS308 Compiler Theory 3 con t a ins three addresses (two for operan ds, one for the result)