add unit test

Author: ubfx

mlir/unittests/Dialect/CMakeLists.txt

@@ -9,6 +9,7 @@ target_link_libraries(MLIRDialectTests
 add_subdirectory(Index)
 add_subdirectory(LLVMIR)
 add_subdirectory(MemRef)
+add_subdirectory(SCF)
 add_subdirectory(SparseTensor)
 add_subdirectory(SPIRV)
 add_subdirectory(Transform)

mlir/unittests/Dialect/SCF/CMakeLists.txt

@@ -0,0 +1,8 @@
+add_mlir_unittest(MLIRSCFTests
+  LoopLikeSCFOpsTest.cpp
+)
+target_link_libraries(MLIRSCFTests
+  PRIVATE
+  MLIRIR
+  MLIRSCFDialect
+)

mlir/unittests/Dialect/SCF/LoopLikeSCFOpsTest.cpp

@@ -0,0 +1,91 @@
+//===- LoopLikeSCFOpsTest.cpp - SCF LoopLikeOpInterface Tests -------------===//
+//
+// 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/SCF/IR/SCF.h"
+#include "mlir/IR/Diagnostics.h"
+#include "mlir/IR/MLIRContext.h"
+#include "gtest/gtest.h"
+
+using namespace mlir;
+using namespace mlir::scf;
+
+//===----------------------------------------------------------------------===//
+// Test Fixture
+//===----------------------------------------------------------------------===//
+
+class SCFLoopLikeTest : public ::testing::Test {
+protected:
+  SCFLoopLikeTest() : b(&context), loc(UnknownLoc::get(&context)) {
+    context.loadDialect<arith::ArithDialect, scf::SCFDialect>();
+  }
+
+  void checkUnidimensional(LoopLikeOpInterface loopLikeOp) {
+    std::optional<OpFoldResult> maybeLb = loopLikeOp.getSingleLowerBound();
+    EXPECT_TRUE(maybeLb.has_value());
+    std::optional<OpFoldResult> maybeUb = loopLikeOp.getSingleUpperBound();
+    EXPECT_TRUE(maybeUb.has_value());
+    std::optional<OpFoldResult> maybeStep = loopLikeOp.getSingleStep();
+    EXPECT_TRUE(maybeStep.has_value());
+    std::optional<OpFoldResult> maybeIndVar =
+        loopLikeOp.getSingleInductionVar();
+    EXPECT_TRUE(maybeIndVar.has_value());
+  }
+
+  void checkMultidimensional(LoopLikeOpInterface loopLikeOp) {
+    std::optional<OpFoldResult> maybeLb = loopLikeOp.getSingleLowerBound();
+    EXPECT_FALSE(maybeLb.has_value());
+    std::optional<OpFoldResult> maybeUb = loopLikeOp.getSingleUpperBound();
+    EXPECT_FALSE(maybeUb.has_value());
+    std::optional<OpFoldResult> maybeStep = loopLikeOp.getSingleStep();
+    EXPECT_FALSE(maybeStep.has_value());
+    std::optional<OpFoldResult> maybeIndVar =
+        loopLikeOp.getSingleInductionVar();
+    EXPECT_FALSE(maybeIndVar.has_value());
+  }
+
+  MLIRContext context;
+  OpBuilder b;
+  Location loc;
+};
+
+TEST_F(SCFLoopLikeTest, queryUnidimensionalLooplikes) {
+  Value lb = b.create<arith::ConstantIndexOp>(loc, 0);
+  Value ub = b.create<arith::ConstantIndexOp>(loc, 10);
+  Value step = b.create<arith::ConstantIndexOp>(loc, 2);
+
+  auto forOp = b.create<scf::ForOp>(loc, lb, ub, step);
+  checkUnidimensional(forOp);
+
+  auto forallOp = b.create<scf::ForallOp>(
+      loc, ArrayRef<OpFoldResult>(lb), ArrayRef<OpFoldResult>(ub),
+      ArrayRef<OpFoldResult>(step), ValueRange(), std::nullopt);
+  checkUnidimensional(forallOp);
+
+  auto parallelOp = b.create<scf::ParallelOp>(
+      loc, ValueRange(lb), ValueRange(ub), ValueRange(step), ValueRange());
+  checkUnidimensional(parallelOp);
+}
+
+TEST_F(SCFLoopLikeTest, queryMultidimensionalLooplikes) {
+  Value lb = b.create<arith::ConstantIndexOp>(loc, 0);
+  Value ub = b.create<arith::ConstantIndexOp>(loc, 10);
+  Value step = b.create<arith::ConstantIndexOp>(loc, 2);
+
+  auto forallOp = b.create<scf::ForallOp>(
+      loc, ArrayRef<OpFoldResult>({lb, lb}), ArrayRef<OpFoldResult>({ub, ub}),
+      ArrayRef<OpFoldResult>({step, step}), ValueRange(), std::nullopt);
+  checkMultidimensional(forallOp);
+
+  auto parallelOp = b.create<scf::ParallelOp>(
+      loc, ValueRange({lb, lb}), ValueRange({ub, ub}), ValueRange({step, step}), ValueRange());
+  checkMultidimensional(parallelOp);
+}