Add a new pass for testing signature conversion patterns in isolation

Author: obtuseangleAZ

mlir/lib/Conversion/ConvertToSPIRV/ConvertToSPIRVPass.cpp

@@ -54,7 +54,6 @@ struct ConvertToSPIRVPass final
       config.strictMode = GreedyRewriteStrictness::ExistingOps;
       if (failed(applyPatternsAndFoldGreedily(op, std::move(patterns), config)))
         return signalPassFailure();
-      return;
     }
 
     spirv::TargetEnvAttr targetAttr = spirv::lookupTargetEnvOrDefault(op);

mlir/test/Conversion/ConvertToSPIRV/func-signature-vector-unroll.mlir

@@ -1,4 +1,4 @@
-// RUN: mlir-opt -convert-to-spirv -split-input-file %s | FileCheck %s
+// RUN: mlir-opt -test-spirv-func-signature-conversion -split-input-file %s | FileCheck %s
 
 // CHECK-LABEL: @simple_scalar
 // CHECK-SAME: (%[[ARG0:.+]]: i32)

mlir/test/lib/Conversion/CMakeLists.txt

@@ -1,3 +1,4 @@
+add_subdirectory(ConvertToSPIRV)
 add_subdirectory(FuncToLLVM)
 add_subdirectory(MathToVCIX)
 add_subdirectory(OneToNTypeConversion)

mlir/test/lib/Conversion/ConvertToSPIRV/CMakeLists.txt

@@ -0,0 +1,15 @@
+# Exclude tests from libMLIR.so
+add_mlir_library(MLIRTestConvertToSPIRV
+  TestSPIRVFuncSignatureConversion.cpp
+
+  EXCLUDE_FROM_LIBMLIR
+
+  LINK_LIBS PUBLIC
+  MLIRArithDialect
+  MLIRFuncDialect
+  MLIRSPIRVConversion
+  MLIRSPIRVDialect
+  MLIRVectorDialect
+  MLIRPass
+  MLIRTransforms
+  )

mlir/test/lib/Conversion/ConvertToSPIRV/TestSPIRVFuncSignatureConversion.cpp

@@ -0,0 +1,57 @@
+//===- TestSPIRVFuncSignatureConversion.cpp - Test signature conversion -===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===-------------------------------------------------------------------===//
+
+#include "mlir/Dialect/Arith/IR/Arith.h"
+#include "mlir/Dialect/Func/IR/FuncOps.h"
+#include "mlir/Dialect/SPIRV/IR/SPIRVDialect.h"
+#include "mlir/Dialect/SPIRV/Transforms/SPIRVConversion.h"
+#include "mlir/Dialect/Vector/IR/VectorOps.h"
+#include "mlir/Pass/Pass.h"
+#include "mlir/Pass/PassManager.h"
+#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
+
+namespace mlir {
+namespace {
+
+struct TestSPIRVFuncSignatureConversion final
+    : PassWrapper<TestSPIRVFuncSignatureConversion, OperationPass<ModuleOp>> {
+  MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(TestSPIRVFuncSignatureConversion)
+
+  StringRef getArgument() const final {
+    return "test-spirv-func-signature-conversion";
+  }
+
+  StringRef getDescription() const final {
+    return "Test patterns that convert vector inputs and results in function "
+           "signatures";
+  }
+
+  void getDependentDialects(DialectRegistry &registry) const override {
+    registry.insert<arith::ArithDialect, func::FuncDialect, spirv::SPIRVDialect,
+                    vector::VectorDialect>();
+  }
+
+  void runOnOperation() override {
+    RewritePatternSet patterns(&getContext());
+    populateFuncOpVectorRewritePatterns(patterns);
+    populateReturnOpVectorRewritePatterns(patterns);
+    GreedyRewriteConfig config;
+    config.strictMode = GreedyRewriteStrictness::ExistingOps;
+    (void)applyPatternsAndFoldGreedily(getOperation(), std::move(patterns),
+                                       config);
+  }
+};
+
+} // namespace
+
+namespace test {
+void registerTestSPIRVFuncSignatureConversion() {
+  PassRegistration<TestSPIRVFuncSignatureConversion>();
+}
+} // namespace test
+} // namespace mlir

mlir/tools/mlir-opt/CMakeLists.txt

@@ -36,6 +36,7 @@ if(MLIR_INCLUDE_TESTS)
     MLIRSPIRVTestPasses
     MLIRTensorTestPasses
     MLIRTestAnalysis
+    MLIRTestConvertToSPIRV
     MLIRTestDialect
     MLIRTestDynDialect
     MLIRTestIR

mlir/tools/mlir-opt/mlir-opt.cpp

@@ -141,6 +141,7 @@ void registerTestSCFWhileOpBuilderPass();
 void registerTestSCFWrapInZeroTripCheckPasses();
 void registerTestShapeMappingPass();
 void registerTestSliceAnalysisPass();
+void registerTestSPIRVFuncSignatureConversion();
 void registerTestTensorCopyInsertionPass();
 void registerTestTensorTransforms();
 void registerTestTopologicalSortAnalysisPass();
@@ -273,6 +274,7 @@ void registerTestPasses() {
   mlir::test::registerTestSCFWrapInZeroTripCheckPasses();
   mlir::test::registerTestShapeMappingPass();
   mlir::test::registerTestSliceAnalysisPass();
+  mlir::test::registerTestSPIRVFuncSignatureConversion();
   mlir::test::registerTestTensorCopyInsertionPass();
   mlir::test::registerTestTensorTransforms();
   mlir::test::registerTestTopologicalSortAnalysisPass();