1 //===-------- llvm/unittest/CodeGen/ScalableVectorMVTsTest.cpp ------------===// 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 "llvm/CodeGen/ValueTypes.h" 10 #include "llvm/IR/DerivedTypes.h" 11 #include "llvm/IR/LLVMContext.h" 12 #include "llvm/Support/MachineValueType.h" 13 #include "llvm/Support/TypeSize.h" 14 #include "gtest/gtest.h" 15 16 using namespace llvm; 17 18 namespace { 19 20 TEST(ScalableVectorMVTsTest, IntegerMVTs) { 21 for (auto VecTy : MVT::integer_scalable_vector_valuetypes()) { 22 ASSERT_TRUE(VecTy.isValid()); 23 ASSERT_TRUE(VecTy.isInteger()); 24 ASSERT_TRUE(VecTy.isVector()); 25 ASSERT_TRUE(VecTy.isScalableVector()); 26 ASSERT_TRUE(VecTy.getScalarType().isValid()); 27 28 ASSERT_FALSE(VecTy.isFloatingPoint()); 29 } 30 } 31 32 TEST(ScalableVectorMVTsTest, FloatMVTs) { 33 for (auto VecTy : MVT::fp_scalable_vector_valuetypes()) { 34 ASSERT_TRUE(VecTy.isValid()); 35 ASSERT_TRUE(VecTy.isFloatingPoint()); 36 ASSERT_TRUE(VecTy.isVector()); 37 ASSERT_TRUE(VecTy.isScalableVector()); 38 ASSERT_TRUE(VecTy.getScalarType().isValid()); 39 40 ASSERT_FALSE(VecTy.isInteger()); 41 } 42 } 43 44 TEST(ScalableVectorMVTsTest, HelperFuncs) { 45 LLVMContext Ctx; 46 47 // Create with scalable flag 48 EVT Vnx4i32 = EVT::getVectorVT(Ctx, MVT::i32, 4, /*Scalable=*/true); 49 ASSERT_TRUE(Vnx4i32.isScalableVector()); 50 51 // Create with separate llvm::ElementCount 52 auto EltCnt = ElementCount::getScalable(2); 53 EVT Vnx2i32 = EVT::getVectorVT(Ctx, MVT::i32, EltCnt); 54 ASSERT_TRUE(Vnx2i32.isScalableVector()); 55 56 // Create with inline llvm::ElementCount 57 EVT Vnx2i64 = EVT::getVectorVT(Ctx, MVT::i64, ElementCount::getScalable(2)); 58 ASSERT_TRUE(Vnx2i64.isScalableVector()); 59 60 // Check that changing scalar types/element count works 61 EXPECT_EQ(Vnx2i32.widenIntegerVectorElementType(Ctx), Vnx2i64); 62 EXPECT_EQ(Vnx4i32.getHalfNumVectorElementsVT(Ctx), Vnx2i32); 63 64 // Check that overloaded '*' and '/' operators work 65 EXPECT_EQ(EVT::getVectorVT(Ctx, MVT::i64, EltCnt * 2), MVT::nxv4i64); 66 EXPECT_EQ(EVT::getVectorVT(Ctx, MVT::i64, EltCnt / 2), MVT::nxv1i64); 67 68 // Check that float->int conversion works 69 EVT Vnx2f64 = EVT::getVectorVT(Ctx, MVT::f64, ElementCount::getScalable(2)); 70 EXPECT_EQ(Vnx2f64.changeTypeToInteger(), Vnx2i64); 71 72 // Check fields inside llvm::ElementCount 73 EltCnt = Vnx4i32.getVectorElementCount(); 74 EXPECT_EQ(EltCnt.Min, 4U); 75 ASSERT_TRUE(EltCnt.Scalable); 76 77 // Check that fixed-length vector types aren't scalable. 78 EVT V8i32 = EVT::getVectorVT(Ctx, MVT::i32, 8); 79 ASSERT_FALSE(V8i32.isScalableVector()); 80 EVT V4f64 = EVT::getVectorVT(Ctx, MVT::f64, ElementCount::getFixed(4)); 81 ASSERT_FALSE(V4f64.isScalableVector()); 82 83 // Check that llvm::ElementCount works for fixed-length types. 84 EltCnt = V8i32.getVectorElementCount(); 85 EXPECT_EQ(EltCnt.Min, 8U); 86 ASSERT_FALSE(EltCnt.Scalable); 87 } 88 89 TEST(ScalableVectorMVTsTest, IRToVTTranslation) { 90 LLVMContext Ctx; 91 92 Type *Int64Ty = Type::getInt64Ty(Ctx); 93 VectorType *ScV8Int64Ty = 94 VectorType::get(Int64Ty, ElementCount::getScalable(8)); 95 96 // Check that we can map a scalable IR type to an MVT 97 MVT Mnxv8i64 = MVT::getVT(ScV8Int64Ty); 98 ASSERT_TRUE(Mnxv8i64.isScalableVector()); 99 ASSERT_EQ(ScV8Int64Ty->getElementCount(), Mnxv8i64.getVectorElementCount()); 100 ASSERT_EQ(MVT::getVT(ScV8Int64Ty->getElementType()), 101 Mnxv8i64.getScalarType()); 102 103 // Check that we can map a scalable IR type to an EVT 104 EVT Enxv8i64 = EVT::getEVT(ScV8Int64Ty); 105 ASSERT_TRUE(Enxv8i64.isScalableVector()); 106 ASSERT_EQ(ScV8Int64Ty->getElementCount(), Enxv8i64.getVectorElementCount()); 107 ASSERT_EQ(EVT::getEVT(ScV8Int64Ty->getElementType()), 108 Enxv8i64.getScalarType()); 109 } 110 111 TEST(ScalableVectorMVTsTest, VTToIRTranslation) { 112 LLVMContext Ctx; 113 114 EVT Enxv4f64 = EVT::getVectorVT(Ctx, MVT::f64, ElementCount::getScalable(4)); 115 116 Type *Ty = Enxv4f64.getTypeForEVT(Ctx); 117 VectorType *ScV4Float64Ty = cast<VectorType>(Ty); 118 ASSERT_TRUE(isa<ScalableVectorType>(ScV4Float64Ty)); 119 ASSERT_EQ(Enxv4f64.getVectorElementCount(), ScV4Float64Ty->getElementCount()); 120 ASSERT_EQ(Enxv4f64.getScalarType().getTypeForEVT(Ctx), 121 ScV4Float64Ty->getElementType()); 122 } 123 124 TEST(ScalableVectorMVTsTest, SizeQueries) { 125 LLVMContext Ctx; 126 127 EVT nxv4i32 = EVT::getVectorVT(Ctx, MVT::i32, 4, /*Scalable=*/ true); 128 EVT nxv2i32 = EVT::getVectorVT(Ctx, MVT::i32, 2, /*Scalable=*/ true); 129 EVT nxv2i64 = EVT::getVectorVT(Ctx, MVT::i64, 2, /*Scalable=*/ true); 130 EVT nxv2f64 = EVT::getVectorVT(Ctx, MVT::f64, 2, /*Scalable=*/ true); 131 132 EVT v4i32 = EVT::getVectorVT(Ctx, MVT::i32, 4); 133 EVT v2i32 = EVT::getVectorVT(Ctx, MVT::i32, 2); 134 EVT v2i64 = EVT::getVectorVT(Ctx, MVT::i64, 2); 135 EVT v2f64 = EVT::getVectorVT(Ctx, MVT::f64, 2); 136 137 // Check equivalence and ordering on scalable types. 138 EXPECT_EQ(nxv4i32.getSizeInBits(), nxv2i64.getSizeInBits()); 139 EXPECT_EQ(nxv2f64.getSizeInBits(), nxv2i64.getSizeInBits()); 140 EXPECT_NE(nxv2i32.getSizeInBits(), nxv4i32.getSizeInBits()); 141 EXPECT_LT(nxv2i32.getSizeInBits(), nxv2i64.getSizeInBits()); 142 EXPECT_LE(nxv4i32.getSizeInBits(), nxv2i64.getSizeInBits()); 143 EXPECT_GT(nxv4i32.getSizeInBits(), nxv2i32.getSizeInBits()); 144 EXPECT_GE(nxv2i64.getSizeInBits(), nxv4i32.getSizeInBits()); 145 146 // Check equivalence and ordering on fixed types. 147 EXPECT_EQ(v4i32.getSizeInBits(), v2i64.getSizeInBits()); 148 EXPECT_EQ(v2f64.getSizeInBits(), v2i64.getSizeInBits()); 149 EXPECT_NE(v2i32.getSizeInBits(), v4i32.getSizeInBits()); 150 EXPECT_LT(v2i32.getSizeInBits(), v2i64.getSizeInBits()); 151 EXPECT_LE(v4i32.getSizeInBits(), v2i64.getSizeInBits()); 152 EXPECT_GT(v4i32.getSizeInBits(), v2i32.getSizeInBits()); 153 EXPECT_GE(v2i64.getSizeInBits(), v4i32.getSizeInBits()); 154 155 // Check that scalable and non-scalable types with the same minimum size 156 // are not considered equal. 157 ASSERT_TRUE(v4i32.getSizeInBits() != nxv4i32.getSizeInBits()); 158 ASSERT_FALSE(v2i64.getSizeInBits() == nxv2f64.getSizeInBits()); 159 160 // Check that we can obtain a known-exact size from a non-scalable type. 161 EXPECT_EQ(v4i32.getSizeInBits(), 128U); 162 EXPECT_EQ(v2i64.getSizeInBits().getFixedSize(), 128U); 163 164 // Check that we can query the known minimum size for both scalable and 165 // fixed length types. 166 EXPECT_EQ(nxv2i32.getSizeInBits().getKnownMinSize(), 64U); 167 EXPECT_EQ(nxv2f64.getSizeInBits().getKnownMinSize(), 128U); 168 EXPECT_EQ(v2i32.getSizeInBits().getKnownMinSize(), 169 nxv2i32.getSizeInBits().getKnownMinSize()); 170 171 // Check scalable property. 172 ASSERT_FALSE(v4i32.getSizeInBits().isScalable()); 173 ASSERT_TRUE(nxv4i32.getSizeInBits().isScalable()); 174 175 // Check convenience size scaling methods. 176 EXPECT_EQ(v2i32.getSizeInBits() * 2, v4i32.getSizeInBits()); 177 EXPECT_EQ(2 * nxv2i32.getSizeInBits(), nxv4i32.getSizeInBits()); 178 EXPECT_EQ(nxv2f64.getSizeInBits() / 2, nxv2i32.getSizeInBits()); 179 } 180 181 } // end anonymous namespace 182