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//===- ConstantRangeTest.cpp - ConstantRange 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 "llvm/IR/DataLayout.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Type.h"
#include "llvm/Testing/Support/Error.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
TEST(DataLayoutTest, FunctionPtrAlign) {
EXPECT_EQ(MaybeAlign(0), DataLayout("").getFunctionPtrAlign());
EXPECT_EQ(MaybeAlign(1), DataLayout("Fi8").getFunctionPtrAlign());
EXPECT_EQ(MaybeAlign(2), DataLayout("Fi16").getFunctionPtrAlign());
EXPECT_EQ(MaybeAlign(4), DataLayout("Fi32").getFunctionPtrAlign());
EXPECT_EQ(MaybeAlign(8), DataLayout("Fi64").getFunctionPtrAlign());
EXPECT_EQ(MaybeAlign(1), DataLayout("Fn8").getFunctionPtrAlign());
EXPECT_EQ(MaybeAlign(2), DataLayout("Fn16").getFunctionPtrAlign());
EXPECT_EQ(MaybeAlign(4), DataLayout("Fn32").getFunctionPtrAlign());
EXPECT_EQ(MaybeAlign(8), DataLayout("Fn64").getFunctionPtrAlign());
EXPECT_EQ(DataLayout::FunctionPtrAlignType::Independent, \
DataLayout("").getFunctionPtrAlignType());
EXPECT_EQ(DataLayout::FunctionPtrAlignType::Independent, \
DataLayout("Fi8").getFunctionPtrAlignType());
EXPECT_EQ(DataLayout::FunctionPtrAlignType::MultipleOfFunctionAlign, \
DataLayout("Fn8").getFunctionPtrAlignType());
EXPECT_EQ(DataLayout("Fi8"), DataLayout("Fi8"));
EXPECT_NE(DataLayout("Fi8"), DataLayout("Fi16"));
EXPECT_NE(DataLayout("Fi8"), DataLayout("Fn8"));
DataLayout a(""), b("Fi8"), c("Fn8");
EXPECT_NE(a, b);
EXPECT_NE(a, c);
EXPECT_NE(b, c);
a = b;
EXPECT_EQ(a, b);
a = c;
EXPECT_EQ(a, c);
}
TEST(DataLayoutTest, ValueOrABITypeAlignment) {
const DataLayout DL("Fi8");
LLVMContext Context;
Type *const FourByteAlignType = Type::getInt32Ty(Context);
EXPECT_EQ(Align(16),
DL.getValueOrABITypeAlignment(MaybeAlign(16), FourByteAlignType));
EXPECT_EQ(Align(4),
DL.getValueOrABITypeAlignment(MaybeAlign(), FourByteAlignType));
}
TEST(DataLayoutTest, GlobalsAddressSpace) {
// When not explicitly defined the globals address space should be zero:
EXPECT_EQ(DataLayout("").getDefaultGlobalsAddressSpace(), 0u);
EXPECT_EQ(DataLayout("P1-A2").getDefaultGlobalsAddressSpace(), 0u);
EXPECT_EQ(DataLayout("G2").getDefaultGlobalsAddressSpace(), 2u);
// Check that creating a GlobalVariable without an explicit address space
// in a module with a default globals address space respects that default:
LLVMContext Context;
std::unique_ptr<Module> M(new Module("MyModule", Context));
// Default is globals in address space zero:
auto *Int32 = Type::getInt32Ty(Context);
auto *DefaultGlobal1 = new GlobalVariable(
*M, Int32, false, GlobalValue::ExternalLinkage, nullptr);
EXPECT_EQ(DefaultGlobal1->getAddressSpace(), 0u);
auto *ExplicitGlobal1 = new GlobalVariable(
*M, Int32, false, GlobalValue::ExternalLinkage, nullptr, "", nullptr,
GlobalValue::NotThreadLocal, 123);
EXPECT_EQ(ExplicitGlobal1->getAddressSpace(), 123u);
// When using a datalayout with the global address space set to 200, global
// variables should default to 200
M->setDataLayout("G200");
auto *DefaultGlobal2 = new GlobalVariable(
*M, Int32, false, GlobalValue::ExternalLinkage, nullptr);
EXPECT_EQ(DefaultGlobal2->getAddressSpace(), 200u);
auto *ExplicitGlobal2 = new GlobalVariable(
*M, Int32, false, GlobalValue::ExternalLinkage, nullptr, "", nullptr,
GlobalValue::NotThreadLocal, 123);
EXPECT_EQ(ExplicitGlobal2->getAddressSpace(), 123u);
}
TEST(DataLayoutTest, VectorAlign) {
Expected<DataLayout> DL = DataLayout::parse("v64:64");
EXPECT_THAT_EXPECTED(DL, Succeeded());
LLVMContext Context;
Type *const FloatTy = Type::getFloatTy(Context);
Type *const V8F32Ty = FixedVectorType::get(FloatTy, 8);
// The alignment for a vector type larger than any specified vector type uses
// the natural alignment as a fallback.
EXPECT_EQ(Align(4 * 8), DL->getABITypeAlign(V8F32Ty));
EXPECT_EQ(Align(4 * 8), DL->getPrefTypeAlign(V8F32Ty));
}
} // anonymous namespace
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