1 //===- llvm/unittest/IR/ValueTest.cpp - Value unit tests ------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "llvm/AsmParser/Parser.h"
11 #include "llvm/IR/Function.h"
12 #include "llvm/IR/LLVMContext.h"
13 #include "llvm/IR/Module.h"
14 #include "llvm/IR/Value.h"
15 #include "llvm/Support/SourceMgr.h"
16 #include "gtest/gtest.h"
17 using namespace llvm;
18
19 namespace {
20
TEST(ValueTest,UsedInBasicBlock)21 TEST(ValueTest, UsedInBasicBlock) {
22 LLVMContext C;
23
24 const char *ModuleString = "define void @f(i32 %x, i32 %y) {\n"
25 "bb0:\n"
26 " %y1 = add i32 %y, 1\n"
27 " %y2 = add i32 %y, 1\n"
28 " %y3 = add i32 %y, 1\n"
29 " %y4 = add i32 %y, 1\n"
30 " %y5 = add i32 %y, 1\n"
31 " %y6 = add i32 %y, 1\n"
32 " %y7 = add i32 %y, 1\n"
33 " %y8 = add i32 %x, 1\n"
34 " ret void\n"
35 "}\n";
36 SMDiagnostic Err;
37 std::unique_ptr<Module> M = parseAssemblyString(ModuleString, Err, C);
38
39 Function *F = M->getFunction("f");
40
41 EXPECT_FALSE(F->isUsedInBasicBlock(F->begin()));
42 EXPECT_TRUE((++F->arg_begin())->isUsedInBasicBlock(F->begin()));
43 EXPECT_TRUE(F->arg_begin()->isUsedInBasicBlock(F->begin()));
44 }
45
TEST(GlobalTest,CreateAddressSpace)46 TEST(GlobalTest, CreateAddressSpace) {
47 LLVMContext &Ctx = getGlobalContext();
48 std::unique_ptr<Module> M(new Module("TestModule", Ctx));
49 Type *Int8Ty = Type::getInt8Ty(Ctx);
50 Type *Int32Ty = Type::getInt32Ty(Ctx);
51
52 GlobalVariable *Dummy0
53 = new GlobalVariable(*M,
54 Int32Ty,
55 true,
56 GlobalValue::ExternalLinkage,
57 Constant::getAllOnesValue(Int32Ty),
58 "dummy",
59 nullptr,
60 GlobalVariable::NotThreadLocal,
61 1);
62
63 EXPECT_TRUE(Value::MaximumAlignment == 536870912U);
64 Dummy0->setAlignment(536870912U);
65 EXPECT_EQ(Dummy0->getAlignment(), 536870912U);
66
67 // Make sure the address space isn't dropped when returning this.
68 Constant *Dummy1 = M->getOrInsertGlobal("dummy", Int32Ty);
69 EXPECT_EQ(Dummy0, Dummy1);
70 EXPECT_EQ(1u, Dummy1->getType()->getPointerAddressSpace());
71
72
73 // This one requires a bitcast, but the address space must also stay the same.
74 GlobalVariable *DummyCast0
75 = new GlobalVariable(*M,
76 Int32Ty,
77 true,
78 GlobalValue::ExternalLinkage,
79 Constant::getAllOnesValue(Int32Ty),
80 "dummy_cast",
81 nullptr,
82 GlobalVariable::NotThreadLocal,
83 1);
84
85 // Make sure the address space isn't dropped when returning this.
86 Constant *DummyCast1 = M->getOrInsertGlobal("dummy_cast", Int8Ty);
87 EXPECT_EQ(1u, DummyCast1->getType()->getPointerAddressSpace());
88 EXPECT_NE(DummyCast0, DummyCast1) << *DummyCast1;
89 }
90
91 #ifdef GTEST_HAS_DEATH_TEST
92 #ifndef NDEBUG
TEST(GlobalTest,AlignDeath)93 TEST(GlobalTest, AlignDeath) {
94 LLVMContext &Ctx = getGlobalContext();
95 std::unique_ptr<Module> M(new Module("TestModule", Ctx));
96 Type *Int32Ty = Type::getInt32Ty(Ctx);
97 GlobalVariable *Var =
98 new GlobalVariable(*M, Int32Ty, true, GlobalValue::ExternalLinkage,
99 Constant::getAllOnesValue(Int32Ty), "var", nullptr,
100 GlobalVariable::NotThreadLocal, 1);
101
102 EXPECT_DEATH(Var->setAlignment(536870913U), "Alignment is not a power of 2");
103 EXPECT_DEATH(Var->setAlignment(1073741824U),
104 "Alignment is greater than MaximumAlignment");
105 }
106 #endif
107 #endif
108
109 } // end anonymous namespace
110