at.dms.kjc.sir.lowering
Class SimplifyArguments

java.lang.Object
  at.dms.kjc.sir.lowering.SimplifyArguments

public class SimplifyArguments
extends Object

Re-write code so function arguments are either literal, local, field, or array access. This should allow us to replace min, max, abs with macros at the right type rather than old practice of casting to float, using the float version and casting back. Do not extend this to arguments to print / println until there is a way of dealing with the concatenation of implicit toString()s that occur only in the argument to these.

Author:

Allyn Dimock

Constructor Summary

SimplifyArguments()

Method Summary

static void

simplify(SIRStream str) Walk over stream simplifying arguments to function calls.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SimplifyArguments

public SimplifyArguments()

Method Detail

simplify

public static void simplify(SIRStream str)

Walk over stream simplifying arguments to function calls. Rules: (1) If an expression is a complicated argument to a function then it must be three-address coverted at the top level (so that an expression with side effects only executes the side-effect once). (2) If an expression contains a function call, then it needs to be three-address converted (so that the arguments can be converted at the correct time relative to its calling context).

Parameters:

str - : stream to process, munged in place.