InterProceduralAnalysis (SystemDS 2.2.1 API)

```
public class InterProceduralAnalysis
extends Object
```
This Inter Procedural Analysis (IPA) serves two major purposes: 1) Inter-Procedure Analysis: propagate statistics from calling program into functions and back into main program. This is done recursively for nested function invocations. 2) Intra-Procedural Analysis: propagate statistics across hop dags of subsequent statement blocks in order to allow chained function calls and reasoning about changing sparsity etc (that requires the rewritten hops dag as input). This also includes control-flow aware propagation of size and sparsity. Furthermore, it also serves as a second constant propagation pass. Additionally, IPA also covers the removal of unused functions, the decision on recompile once functions, the removal of unnecessary checkpoints, and the global removal of constant binary operations such as X * ones.

Constructors
Constructor and Description
`InterProceduralAnalysis(DMLProgram dmlp)` Creates a handle for performing inter-procedural analysis for a given DML program and its associated HOP DAGs.
`InterProceduralAnalysis(StatementBlock sb)`

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`analyzeProgram()` Main interface to perform IPA over a given DML program.
`void`	`analyzeProgram(int repetitions)` Main interface to perform IPA over a given DML program.
`Set<String>`	`analyzeSubProgram()`

Class InterProceduralAnalysis