Package org.apache.sysds.hops.rewrite
Class RewriteRemoveUnnecessaryBranches
- java.lang.Object
-
- org.apache.sysds.hops.rewrite.StatementBlockRewriteRule
-
- org.apache.sysds.hops.rewrite.RewriteRemoveUnnecessaryBranches
-
public class RewriteRemoveUnnecessaryBranches extends StatementBlockRewriteRule
Rule: Simplify program structure by pulling if or else statement body out (removing the if statement block ifself) in order to allow intra-procedure analysis to propagate exact statistics.
-
-
Constructor Summary
Constructors Constructor Description RewriteRemoveUnnecessaryBranches()
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description booleancreatesSplitDag()Indicates if the rewrite potentially splits dags, which is used for phase ordering of rewrites.List<StatementBlock>rewriteStatementBlock(StatementBlock sb, ProgramRewriteStatus state)Handle an arbitrary statement block.List<StatementBlock>rewriteStatementBlocks(List<StatementBlock> sbs, ProgramRewriteStatus sate)Handle a list of statement blocks.-
Methods inherited from class org.apache.sysds.hops.rewrite.StatementBlockRewriteRule
createCutVarName
-
-
-
-
Method Detail
-
createsSplitDag
public boolean createsSplitDag()
Description copied from class:StatementBlockRewriteRuleIndicates if the rewrite potentially splits dags, which is used for phase ordering of rewrites.- Specified by:
createsSplitDagin classStatementBlockRewriteRule- Returns:
- true if dag splits are possible.
-
rewriteStatementBlock
public List<StatementBlock> rewriteStatementBlock(StatementBlock sb, ProgramRewriteStatus state)
Description copied from class:StatementBlockRewriteRuleHandle 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.- Specified by:
rewriteStatementBlockin classStatementBlockRewriteRule- Parameters:
sb- statement blockstate- program rewrite status- Returns:
- list of statement blocks
-
rewriteStatementBlocks
public List<StatementBlock> rewriteStatementBlocks(List<StatementBlock> sbs, ProgramRewriteStatus sate)
Description copied from class:StatementBlockRewriteRuleHandle 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.- Specified by:
rewriteStatementBlocksin classStatementBlockRewriteRule- Parameters:
sbs- list of statement blockssate- program rewrite status- Returns:
- list of statement blocks
-
-