[Mlir-commits] [mlir] [mlir][SparseTensor] Simplify pipeline (PR #152908)

[Matthias Springer]

https://github.com/matthias-springer created https://github.com/llvm/llvm-project/pull/152908

This refactoring improves compilation time.


>From f5e78bfc45de2a7ea34fd82163778b3a8d6174ff Mon Sep 17 00:00:00 2001
From: Matthias Springer <me at m-sp.org>
Date: Sun, 10 Aug 2025 11:06:21 +0000
Subject: [PATCH] [mlir][SparseTensor] Simplify pipeline

---
 .../SparseTensor/Pipelines/SparseTensorPipelines.cpp  | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/mlir/lib/Dialect/SparseTensor/Pipelines/SparseTensorPipelines.cpp b/mlir/lib/Dialect/SparseTensor/Pipelines/SparseTensorPipelines.cpp
index 3b97786e58155..dabbea1bdec63 100644
--- a/mlir/lib/Dialect/SparseTensor/Pipelines/SparseTensorPipelines.cpp
+++ b/mlir/lib/Dialect/SparseTensor/Pipelines/SparseTensorPipelines.cpp
@@ -71,7 +71,6 @@ void mlir::sparse_tensor::buildSparsifier(OpPassManager &pm,
   pm.addPass(createLowerAffinePass());
   pm.addPass(
       createConvertVectorToLLVMPass(options.convertVectorToLLVMOptions()));
-  pm.addPass(createFinalizeMemRefToLLVMConversionPass());
   pm.addNestedPass<func::FuncOp>(createConvertComplexToStandardPass());
   pm.addNestedPass<func::FuncOp>(arith::createArithExpandOpsPass());
   pm.addNestedPass<func::FuncOp>(createConvertMathToLLVMPass());
@@ -79,12 +78,6 @@ void mlir::sparse_tensor::buildSparsifier(OpPassManager &pm,
   pm.addPass(createConvertComplexToLibm());
   pm.addPass(
       createConvertVectorToLLVMPass(options.convertVectorToLLVMOptions()));
-  pm.addPass(createConvertComplexToLLVMPass());
-  pm.addPass(
-      createConvertVectorToLLVMPass(options.convertVectorToLLVMOptions()));
-  pm.addPass(createConvertFuncToLLVMPass());
-  pm.addPass(createArithToLLVMConversionPass());
-  pm.addPass(createConvertControlFlowToLLVMPass());
 
   // Finalize GPU code generation.
   if (gpuCodegen) {
@@ -99,8 +92,8 @@ void mlir::sparse_tensor::buildSparsifier(OpPassManager &pm,
     pm.addPass(createGpuModuleToBinaryPass(gpuModuleToBinaryPassOptions));
   }
 
-  // Convert poison values.
-  pm.addPass(createUBToLLVMConversionPass());
+  // Convert to LLVM.
+  pm.addPass(createConvertToLLVMPass());
 
   // Ensure all casts are realized.
   pm.addPass(createReconcileUnrealizedCastsPass());