1 //===- ConstantRangeTest.cpp - ConstantRange tests ------------------------===// 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/IR/DataLayout.h" 10 #include "llvm/IR/GlobalVariable.h" 11 #include "llvm/IR/LLVMContext.h" 12 #include "llvm/IR/Module.h" 13 #include "llvm/IR/Type.h" 14 #include "gtest/gtest.h" 15 16 using namespace llvm; 17 18 namespace { 19 20 TEST(DataLayoutTest, FunctionPtrAlign) { 21 EXPECT_EQ(MaybeAlign(0), DataLayout("").getFunctionPtrAlign()); 22 EXPECT_EQ(MaybeAlign(1), DataLayout("Fi8").getFunctionPtrAlign()); 23 EXPECT_EQ(MaybeAlign(2), DataLayout("Fi16").getFunctionPtrAlign()); 24 EXPECT_EQ(MaybeAlign(4), DataLayout("Fi32").getFunctionPtrAlign()); 25 EXPECT_EQ(MaybeAlign(8), DataLayout("Fi64").getFunctionPtrAlign()); 26 EXPECT_EQ(MaybeAlign(1), DataLayout("Fn8").getFunctionPtrAlign()); 27 EXPECT_EQ(MaybeAlign(2), DataLayout("Fn16").getFunctionPtrAlign()); 28 EXPECT_EQ(MaybeAlign(4), DataLayout("Fn32").getFunctionPtrAlign()); 29 EXPECT_EQ(MaybeAlign(8), DataLayout("Fn64").getFunctionPtrAlign()); 30 EXPECT_EQ(DataLayout::FunctionPtrAlignType::Independent, \ 31 DataLayout("").getFunctionPtrAlignType()); 32 EXPECT_EQ(DataLayout::FunctionPtrAlignType::Independent, \ 33 DataLayout("Fi8").getFunctionPtrAlignType()); 34 EXPECT_EQ(DataLayout::FunctionPtrAlignType::MultipleOfFunctionAlign, \ 35 DataLayout("Fn8").getFunctionPtrAlignType()); 36 EXPECT_EQ(DataLayout("Fi8"), DataLayout("Fi8")); 37 EXPECT_NE(DataLayout("Fi8"), DataLayout("Fi16")); 38 EXPECT_NE(DataLayout("Fi8"), DataLayout("Fn8")); 39 40 DataLayout a(""), b("Fi8"), c("Fn8"); 41 EXPECT_NE(a, b); 42 EXPECT_NE(a, c); 43 EXPECT_NE(b, c); 44 45 a = b; 46 EXPECT_EQ(a, b); 47 a = c; 48 EXPECT_EQ(a, c); 49 } 50 51 TEST(DataLayoutTest, ValueOrABITypeAlignment) { 52 const DataLayout DL("Fi8"); 53 LLVMContext Context; 54 Type *const FourByteAlignType = Type::getInt32Ty(Context); 55 EXPECT_EQ(Align(16), 56 DL.getValueOrABITypeAlignment(MaybeAlign(16), FourByteAlignType)); 57 EXPECT_EQ(Align(4), 58 DL.getValueOrABITypeAlignment(MaybeAlign(), FourByteAlignType)); 59 } 60 61 TEST(DataLayoutTest, GlobalsAddressSpace) { 62 // When not explicitly defined the globals address space should be zero: 63 EXPECT_EQ(DataLayout("").getDefaultGlobalsAddressSpace(), 0u); 64 EXPECT_EQ(DataLayout("P1-A2").getDefaultGlobalsAddressSpace(), 0u); 65 EXPECT_EQ(DataLayout("G2").getDefaultGlobalsAddressSpace(), 2u); 66 // Check that creating a GlobalVariable without an explicit address space 67 // in a module with a default globals address space respects that default: 68 LLVMContext Context; 69 std::unique_ptr<Module> M(new Module("MyModule", Context)); 70 // Default is globals in address space zero: 71 auto *Int32 = Type::getInt32Ty(Context); 72 auto *DefaultGlobal1 = new GlobalVariable( 73 *M, Int32, false, GlobalValue::ExternalLinkage, nullptr); 74 EXPECT_EQ(DefaultGlobal1->getAddressSpace(), 0u); 75 auto *ExplicitGlobal1 = new GlobalVariable( 76 *M, Int32, false, GlobalValue::ExternalLinkage, nullptr, "", nullptr, 77 GlobalValue::NotThreadLocal, 123); 78 EXPECT_EQ(ExplicitGlobal1->getAddressSpace(), 123u); 79 80 // When using a datalayout with the global address space set to 200, global 81 // variables should default to 200 82 M->setDataLayout("G200"); 83 auto *DefaultGlobal2 = new GlobalVariable( 84 *M, Int32, false, GlobalValue::ExternalLinkage, nullptr); 85 EXPECT_EQ(DefaultGlobal2->getAddressSpace(), 200u); 86 auto *ExplicitGlobal2 = new GlobalVariable( 87 *M, Int32, false, GlobalValue::ExternalLinkage, nullptr, "", nullptr, 88 GlobalValue::NotThreadLocal, 123); 89 EXPECT_EQ(ExplicitGlobal2->getAddressSpace(), 123u); 90 } 91 92 } // anonymous namespace 93