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187 lines
7.1 KiB
187 lines
7.1 KiB
//===-------- llvm/unittest/CodeGen/ScalableVectorMVTsTest.cpp ------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/ValueTypes.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/Support/MachineValueType.h"
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#include "llvm/Support/TypeSize.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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TEST(ScalableVectorMVTsTest, IntegerMVTs) {
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for (auto VecTy : MVT::integer_scalable_vector_valuetypes()) {
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ASSERT_TRUE(VecTy.isValid());
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ASSERT_TRUE(VecTy.isInteger());
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ASSERT_TRUE(VecTy.isVector());
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ASSERT_TRUE(VecTy.isScalableVector());
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ASSERT_TRUE(VecTy.getScalarType().isValid());
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ASSERT_FALSE(VecTy.isFloatingPoint());
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}
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}
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TEST(ScalableVectorMVTsTest, FloatMVTs) {
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for (auto VecTy : MVT::fp_scalable_vector_valuetypes()) {
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ASSERT_TRUE(VecTy.isValid());
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ASSERT_TRUE(VecTy.isFloatingPoint());
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ASSERT_TRUE(VecTy.isVector());
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ASSERT_TRUE(VecTy.isScalableVector());
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ASSERT_TRUE(VecTy.getScalarType().isValid());
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ASSERT_FALSE(VecTy.isInteger());
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}
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}
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TEST(ScalableVectorMVTsTest, HelperFuncs) {
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LLVMContext Ctx;
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// Create with scalable flag
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EVT Vnx4i32 = EVT::getVectorVT(Ctx, MVT::i32, 4, /*Scalable=*/true);
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ASSERT_TRUE(Vnx4i32.isScalableVector());
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// Create with separate llvm::ElementCount
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auto EltCnt = ElementCount::getScalable(2);
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EVT Vnx2i32 = EVT::getVectorVT(Ctx, MVT::i32, EltCnt);
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ASSERT_TRUE(Vnx2i32.isScalableVector());
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// Create with inline llvm::ElementCount
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EVT Vnx2i64 = EVT::getVectorVT(Ctx, MVT::i64, ElementCount::getScalable(2));
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ASSERT_TRUE(Vnx2i64.isScalableVector());
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// Check that changing scalar types/element count works
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EXPECT_EQ(Vnx2i32.widenIntegerVectorElementType(Ctx), Vnx2i64);
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EXPECT_EQ(Vnx4i32.getHalfNumVectorElementsVT(Ctx), Vnx2i32);
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// Check that operators work
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EXPECT_EQ(EVT::getVectorVT(Ctx, MVT::i64, EltCnt * 2), MVT::nxv4i64);
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EXPECT_EQ(EVT::getVectorVT(Ctx, MVT::i64, EltCnt.divideCoefficientBy(2)),
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MVT::nxv1i64);
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// Check that float->int conversion works
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EVT Vnx2f64 = EVT::getVectorVT(Ctx, MVT::f64, ElementCount::getScalable(2));
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EXPECT_EQ(Vnx2f64.changeTypeToInteger(), Vnx2i64);
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// Check fields inside llvm::ElementCount
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EltCnt = Vnx4i32.getVectorElementCount();
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EXPECT_EQ(EltCnt.getKnownMinValue(), 4U);
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ASSERT_TRUE(EltCnt.isScalable());
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// Check that fixed-length vector types aren't scalable.
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EVT V8i32 = EVT::getVectorVT(Ctx, MVT::i32, 8);
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ASSERT_FALSE(V8i32.isScalableVector());
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EVT V4f64 = EVT::getVectorVT(Ctx, MVT::f64, ElementCount::getFixed(4));
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ASSERT_FALSE(V4f64.isScalableVector());
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// Check that llvm::ElementCount works for fixed-length types.
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EltCnt = V8i32.getVectorElementCount();
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EXPECT_EQ(EltCnt.getKnownMinValue(), 8U);
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ASSERT_FALSE(EltCnt.isScalable());
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}
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TEST(ScalableVectorMVTsTest, IRToVTTranslation) {
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LLVMContext Ctx;
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Type *Int64Ty = Type::getInt64Ty(Ctx);
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VectorType *ScV8Int64Ty =
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VectorType::get(Int64Ty, ElementCount::getScalable(8));
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// Check that we can map a scalable IR type to an MVT
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MVT Mnxv8i64 = MVT::getVT(ScV8Int64Ty);
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ASSERT_TRUE(Mnxv8i64.isScalableVector());
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ASSERT_EQ(ScV8Int64Ty->getElementCount(), Mnxv8i64.getVectorElementCount());
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ASSERT_EQ(MVT::getVT(ScV8Int64Ty->getElementType()),
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Mnxv8i64.getScalarType());
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// Check that we can map a scalable IR type to an EVT
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EVT Enxv8i64 = EVT::getEVT(ScV8Int64Ty);
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ASSERT_TRUE(Enxv8i64.isScalableVector());
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ASSERT_EQ(ScV8Int64Ty->getElementCount(), Enxv8i64.getVectorElementCount());
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ASSERT_EQ(EVT::getEVT(ScV8Int64Ty->getElementType()),
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Enxv8i64.getScalarType());
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}
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TEST(ScalableVectorMVTsTest, VTToIRTranslation) {
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LLVMContext Ctx;
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EVT Enxv4f64 = EVT::getVectorVT(Ctx, MVT::f64, ElementCount::getScalable(4));
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Type *Ty = Enxv4f64.getTypeForEVT(Ctx);
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VectorType *ScV4Float64Ty = cast<VectorType>(Ty);
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ASSERT_TRUE(isa<ScalableVectorType>(ScV4Float64Ty));
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ASSERT_EQ(Enxv4f64.getVectorElementCount(), ScV4Float64Ty->getElementCount());
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ASSERT_EQ(Enxv4f64.getScalarType().getTypeForEVT(Ctx),
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ScV4Float64Ty->getElementType());
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}
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TEST(ScalableVectorMVTsTest, SizeQueries) {
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LLVMContext Ctx;
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EVT nxv4i32 = EVT::getVectorVT(Ctx, MVT::i32, 4, /*Scalable=*/ true);
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EVT nxv2i32 = EVT::getVectorVT(Ctx, MVT::i32, 2, /*Scalable=*/ true);
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EVT nxv2i64 = EVT::getVectorVT(Ctx, MVT::i64, 2, /*Scalable=*/ true);
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EVT nxv2f64 = EVT::getVectorVT(Ctx, MVT::f64, 2, /*Scalable=*/ true);
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EVT v4i32 = EVT::getVectorVT(Ctx, MVT::i32, 4);
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EVT v2i32 = EVT::getVectorVT(Ctx, MVT::i32, 2);
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EVT v2i64 = EVT::getVectorVT(Ctx, MVT::i64, 2);
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EVT v2f64 = EVT::getVectorVT(Ctx, MVT::f64, 2);
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// Check equivalence and ordering on scalable types.
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EXPECT_EQ(nxv4i32.getSizeInBits(), nxv2i64.getSizeInBits());
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EXPECT_EQ(nxv2f64.getSizeInBits(), nxv2i64.getSizeInBits());
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EXPECT_NE(nxv2i32.getSizeInBits(), nxv4i32.getSizeInBits());
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EXPECT_LT(nxv2i32.getSizeInBits().getKnownMinSize(),
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nxv2i64.getSizeInBits().getKnownMinSize());
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EXPECT_LE(nxv4i32.getSizeInBits().getKnownMinSize(),
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nxv2i64.getSizeInBits().getKnownMinSize());
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EXPECT_GT(nxv4i32.getSizeInBits().getKnownMinSize(),
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nxv2i32.getSizeInBits().getKnownMinSize());
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EXPECT_GE(nxv2i64.getSizeInBits().getKnownMinSize(),
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nxv4i32.getSizeInBits().getKnownMinSize());
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// Check equivalence and ordering on fixed types.
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EXPECT_EQ(v4i32.getSizeInBits(), v2i64.getSizeInBits());
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EXPECT_EQ(v2f64.getSizeInBits(), v2i64.getSizeInBits());
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EXPECT_NE(v2i32.getSizeInBits(), v4i32.getSizeInBits());
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EXPECT_LT(v2i32.getFixedSizeInBits(), v2i64.getFixedSizeInBits());
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EXPECT_LE(v4i32.getFixedSizeInBits(), v2i64.getFixedSizeInBits());
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EXPECT_GT(v4i32.getFixedSizeInBits(), v2i32.getFixedSizeInBits());
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EXPECT_GE(v2i64.getFixedSizeInBits(), v4i32.getFixedSizeInBits());
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// Check that scalable and non-scalable types with the same minimum size
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// are not considered equal.
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ASSERT_TRUE(v4i32.getSizeInBits() != nxv4i32.getSizeInBits());
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ASSERT_FALSE(v2i64.getSizeInBits() == nxv2f64.getSizeInBits());
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// Check that we can obtain a known-exact size from a non-scalable type.
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EXPECT_EQ(v4i32.getFixedSizeInBits(), 128U);
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EXPECT_EQ(v2i64.getFixedSizeInBits(), 128U);
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// Check that we can query the known minimum size for both scalable and
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// fixed length types.
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EXPECT_EQ(nxv2i32.getSizeInBits().getKnownMinSize(), 64U);
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EXPECT_EQ(nxv2f64.getSizeInBits().getKnownMinSize(), 128U);
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EXPECT_EQ(v2i32.getSizeInBits().getKnownMinSize(),
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nxv2i32.getSizeInBits().getKnownMinSize());
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// Check scalable property.
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ASSERT_FALSE(v4i32.getSizeInBits().isScalable());
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ASSERT_TRUE(nxv4i32.getSizeInBits().isScalable());
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// Check convenience size scaling methods.
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EXPECT_EQ(v2i32.getSizeInBits() * 2, v4i32.getSizeInBits());
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EXPECT_EQ(2 * nxv2i32.getSizeInBits(), nxv4i32.getSizeInBits());
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EXPECT_EQ(nxv2f64.getSizeInBits() / 2, nxv2i32.getSizeInBits());
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}
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} // end anonymous namespace
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