Package org.apache.sysds.hops.rewrite

Class StatementBlockRewriteRule

java.lang.Object
org.apache.sysds.hops.rewrite.StatementBlockRewriteRule
Direct Known Subclasses:
MarkForLineageReuse, RewriteCompressedReblock, RewriteForLoopVectorization, RewriteHoistLoopInvariantOperations, RewriteInjectOOCTee, RewriteInjectSparkLoopCheckpointing, RewriteJoinReordering, RewriteMarkLoopVariablesUpdateInPlace, RewriteMergeBlockSequence, RewriteRaPushdown, RewriteRemoveEmptyBasicBlocks, RewriteRemoveEmptyForLoops, RewriteRemoveForLoopEmptySequence, RewriteRemoveTransformEncodeMeta, RewriteRemoveUnnecessaryBranches, RewriteSplitDagDataDependentOperators, RewriteSplitDagUnknownCSVRead
public abstract class StatementBlockRewriteRule extends Object
Base class for all hop rewrites in order to enable generic application of all rules.

  • Constructor Details

    • StatementBlockRewriteRule

      public StatementBlockRewriteRule()

  • Method Details

    • createCutVarName

      public static String createCutVarName(boolean fun)

    • createsSplitDag

      public abstract boolean createsSplitDag()
      Indicates if the rewrite potentially splits dags, which is used for phase ordering of rewrites.
      Returns:
      true if dag splits are possible.

    • rewriteStatementBlock

      public abstract List<StatementBlock> rewriteStatementBlock(StatementBlock sb, ProgramRewriteStatus state)
      Handle an arbitrary statement block. Specific type constraints have to be ensured within the individual rewrites. If a rewrite does not apply to individual blocks, it should simply return the input block.
      Parameters:
      sb - statement block
      state - program rewrite status
      Returns:
      list of statement blocks

    • rewriteStatementBlocks

      public abstract List<StatementBlock> rewriteStatementBlocks(List<StatementBlock> sbs, ProgramRewriteStatus state)
      Handle a list of statement blocks. Specific type constraints have to be ensured within the individual rewrites. If a rewrite does not require sequence access, it should simply return the input list of statement blocks.
      Parameters:
      sbs - list of statement blocks
      state - program rewrite status
      Returns:
      list of statement blocks