Package org.apache.sysds.hops.rewrite

Class RewriteQuantizationFusedCompression

java.lang.Object

org.apache.sysds.hops.rewrite.HopRewriteRule

org.apache.sysds.hops.rewrite.RewriteQuantizationFusedCompression

public class RewriteQuantizationFusedCompression
extends HopRewriteRule

Rule: RewriteFloorCompress. Detects the sequence `M2 = floor(M * S)` followed by `C = compress(M2)` and prepares for fusion into a single operation. This rewrite improves performance by avoiding intermediate results. Currently, it identifies the pattern without applying fusion.

Constructor Summary

Constructors

Constructor	Description
RewriteQuantizationFusedCompression()

Method Summary

Modifier and Type	Method	Description
Hop	rewriteHopDAG(Hop root, ProgramRewriteStatus state)	Handle a predicate hop DAG with exactly one root.
ArrayList<Hop>	rewriteHopDAGs(ArrayList<Hop> roots, ProgramRewriteStatus state)	Handle a generic (last-level) hop DAG with multiple roots.

Methods inherited from class java.lang.Object

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

Constructor Details

RewriteQuantizationFusedCompression

public RewriteQuantizationFusedCompression()

Method Details

rewriteHopDAGs

public ArrayList<Hop> rewriteHopDAGs(ArrayList<Hop> roots,
 ProgramRewriteStatus state)

Description copied from class: HopRewriteRule

Handle a generic (last-level) hop DAG with multiple roots.

Specified by:

rewriteHopDAGs in class HopRewriteRule

Parameters:

roots - high-level operator roots

state - program rewrite status

Returns:

list of high-level operators

rewriteHopDAG

public Hop rewriteHopDAG(Hop root,
 ProgramRewriteStatus state)

Description copied from class: HopRewriteRule

Handle a predicate hop DAG with exactly one root.

Specified by:

rewriteHopDAG in class HopRewriteRule

Parameters:

root - high-level operator root

state - program rewrite status

Returns:

high-level operator