[mlir][PDL] PDLToPDLInterp: Use the pdl pattern name in the generated rewriter.

[jumerckx]

Before, the rewriters generated by convert-pdl-to-pdl-interp had a generic "pdl_generated_rewriter" name. With this change, the name from the original pdl pattern is kept for the rewriter. This makes it easier to relate the two.

[github-actions]

Thank you for submitting a Pull Request (PR) to the LLVM Project!

This PR will be automatically labeled and the relevant teams will be notified.

If you wish to, you can add reviewers by using the "Reviewers" section on this page.

If this is not working for you, it is probably because you do not have write permissions for the repository. In which case you can instead tag reviewers by name in a comment by using @ followed by their GitHub username.

If you have received no comments on your PR for a week, you can request a review by "ping"ing the PR by adding a comment “Ping”. The common courtesy "ping" rate is once a week. Please remember that you are asking for valuable time from other developers.

If you have further questions, they may be answered by the LLVM GitHub User Guide.

You can also ask questions in a comment on this PR, on the LLVM Discord or on the forums.

[llvmbot]

@llvm/pr-subscribers-mlir

Author: None (jumerckx)

Changes

Before, the rewriters generated by convert-pdl-to-pdl-interp had a generic "pdl_generated_rewriter" name. With this change, the name from the original pdl pattern is kept for the rewriter. This makes it easier to relate the two.

---

Full diff: https://github.com/llvm/llvm-project/pull/149481.diff

1 Files Affected:

• (modified) mlir/lib/Conversion/PDLToPDLInterp/PDLToPDLInterp.cpp (+7-1)

diff --git a/mlir/lib/Conversion/PDLToPDLInterp/PDLToPDLInterp.cpp b/mlir/lib/Conversion/PDLToPDLInterp/PDLToPDLInterp.cpp
index 7d20109b3db59..3a1c1fd2d57af 100644
--- a/mlir/lib/Conversion/PDLToPDLInterp/PDLToPDLInterp.cpp
+++ b/mlir/lib/Conversion/PDLToPDLInterp/PDLToPDLInterp.cpp
@@ -632,8 +632,14 @@ void PatternLowering::generate(SuccessNode *successNode, Block *&currentBlock) {
 SymbolRefAttr PatternLowering::generateRewriter(
     pdl::PatternOp pattern, SmallVectorImpl<Position *> &usedMatchValues) {
   builder.setInsertionPointToEnd(rewriterModule.getBody());
+  // Get the pattern name if available, otherwise use default
+  StringRef rewriterName = "pdl_generated_rewriter";
+  if (auto symName = pattern.getSymName()) {
+    rewriterName = symName.value();
+  }
+  
   auto rewriterFunc = builder.create<pdl_interp::FuncOp>(
-      pattern.getLoc(), "pdl_generated_rewriter",
+      pattern.getLoc(), rewriterName,
       builder.getFunctionType({}, {}));
   rewriterSymbolTable.insert(rewriterFunc);
 

[jumerckx]

I can't add reviewers because I'm lacking permissions.
This code seems untouched for quite some time so I'm not sure who to ping for a review, perhaps @River707?