mlir/unittests/Dialect/MemRef/InferShapeTest.cpp

   1 //===- InferShapeTest.cpp - unit tests for shape inference ----------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "mlir/Dialect/MemRef/IR/MemRef.h"
  10 #include "mlir/IR/AffineMap.h"
  11 #include "mlir/IR/Builders.h"
  12 #include "mlir/IR/BuiltinTypes.h"
  13 #include "gtest/gtest.h"
  14
  15 using namespace mlir;
  16 using namespace mlir::memref;
  17
  18 // Source memref has identity layout.
  19 TEST(InferShapeTest, inferRankReducedShapeIdentity) {
  20   MLIRContext ctx;
  21   OpBuilder b(&ctx);
  22   auto sourceMemref = MemRefType::get({10, 5}, b.getIndexType());
  23   auto reducedType = SubViewOp::inferRankReducedResultType(
  24       /*resultShape=*/{2}, sourceMemref, {2, 3}, {1, 2}, {1, 1});
  25   auto expectedType = MemRefType::get(
  26       {2}, b.getIndexType(),
  27       StridedLayoutAttr::get(&ctx, /*offset=*/13, /*strides=*/{1}));
  28   EXPECT_EQ(reducedType, expectedType);
  29 }
  30
  31 // Source memref has non-identity layout.
  32 TEST(InferShapeTest, inferRankReducedShapeNonIdentity) {
  33   MLIRContext ctx;
  34   OpBuilder b(&ctx);
  35   AffineExpr dim0, dim1;
  36   bindDims(&ctx, dim0, dim1);
  37   auto sourceMemref = MemRefType::get({10, 5}, b.getIndexType(),
  38                                       AffineMap::get(2, 0, 1000 * dim0 + dim1));
  39   auto reducedType = SubViewOp::inferRankReducedResultType(
  40       /*resultShape=*/{2}, sourceMemref, {2, 3}, {1, 2}, {1, 1});
  41   auto expectedType = MemRefType::get(
  42       {2}, b.getIndexType(),
  43       StridedLayoutAttr::get(&ctx, /*offset=*/2003, /*strides=*/{1}));
  44   EXPECT_EQ(reducedType, expectedType);
  45 }
  46
  47 TEST(InferShapeTest, inferRankReducedShapeToScalar) {
  48   MLIRContext ctx;
  49   OpBuilder b(&ctx);
  50   AffineExpr dim0, dim1;
  51   bindDims(&ctx, dim0, dim1);
  52   auto sourceMemref = MemRefType::get({10, 5}, b.getIndexType(),
  53                                       AffineMap::get(2, 0, 1000 * dim0 + dim1));
  54   auto reducedType = SubViewOp::inferRankReducedResultType(
  55       /*resultShape=*/{}, sourceMemref, {2, 3}, {1, 1}, {1, 1});
  56   auto expectedType = MemRefType::get(
  57       {}, b.getIndexType(),
  58       StridedLayoutAttr::get(&ctx, /*offset=*/2003, /*strides=*/{}));
  59   EXPECT_EQ(reducedType, expectedType);
  60 }