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251 lines
9.8 KiB
C++
251 lines
9.8 KiB
C++
//===- llvm/unittest/IR/ValueTest.cpp - Value unit tests ------------------===//
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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/IR/Value.h"
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#include "llvm/AsmParser/Parser.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Module.h"
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#include "llvm/IR/ModuleSlotTracker.h"
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#include "llvm/Support/SourceMgr.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(ValueTest, UsedInBasicBlock) {
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LLVMContext C;
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const char *ModuleString = "define void @f(i32 %x, i32 %y) {\n"
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"bb0:\n"
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" %y1 = add i32 %y, 1\n"
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" %y2 = add i32 %y, 1\n"
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" %y3 = add i32 %y, 1\n"
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" %y4 = add i32 %y, 1\n"
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" %y5 = add i32 %y, 1\n"
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" %y6 = add i32 %y, 1\n"
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" %y7 = add i32 %y, 1\n"
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" %y8 = add i32 %x, 1\n"
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" ret void\n"
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"}\n";
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SMDiagnostic Err;
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std::unique_ptr<Module> M = parseAssemblyString(ModuleString, Err, C);
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Function *F = M->getFunction("f");
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EXPECT_FALSE(F->isUsedInBasicBlock(&F->front()));
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EXPECT_TRUE(std::next(F->arg_begin())->isUsedInBasicBlock(&F->front()));
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EXPECT_TRUE(F->arg_begin()->isUsedInBasicBlock(&F->front()));
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}
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TEST(GlobalTest, CreateAddressSpace) {
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LLVMContext Ctx;
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std::unique_ptr<Module> M(new Module("TestModule", Ctx));
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Type *Int8Ty = Type::getInt8Ty(Ctx);
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Type *Int32Ty = Type::getInt32Ty(Ctx);
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GlobalVariable *Dummy0
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= new GlobalVariable(*M,
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Int32Ty,
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true,
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GlobalValue::ExternalLinkage,
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Constant::getAllOnesValue(Int32Ty),
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"dummy",
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nullptr,
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GlobalVariable::NotThreadLocal,
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1);
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EXPECT_TRUE(Value::MaximumAlignment == 536870912U);
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Dummy0->setAlignment(536870912U);
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EXPECT_EQ(Dummy0->getAlignment(), 536870912U);
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// Make sure the address space isn't dropped when returning this.
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Constant *Dummy1 = M->getOrInsertGlobal("dummy", Int32Ty);
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EXPECT_EQ(Dummy0, Dummy1);
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EXPECT_EQ(1u, Dummy1->getType()->getPointerAddressSpace());
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// This one requires a bitcast, but the address space must also stay the same.
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GlobalVariable *DummyCast0
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= new GlobalVariable(*M,
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Int32Ty,
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true,
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GlobalValue::ExternalLinkage,
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Constant::getAllOnesValue(Int32Ty),
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"dummy_cast",
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nullptr,
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GlobalVariable::NotThreadLocal,
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1);
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// Make sure the address space isn't dropped when returning this.
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Constant *DummyCast1 = M->getOrInsertGlobal("dummy_cast", Int8Ty);
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EXPECT_EQ(1u, DummyCast1->getType()->getPointerAddressSpace());
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EXPECT_NE(DummyCast0, DummyCast1) << *DummyCast1;
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}
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#ifdef GTEST_HAS_DEATH_TEST
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#ifndef NDEBUG
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TEST(GlobalTest, AlignDeath) {
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LLVMContext Ctx;
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std::unique_ptr<Module> M(new Module("TestModule", Ctx));
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Type *Int32Ty = Type::getInt32Ty(Ctx);
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GlobalVariable *Var =
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new GlobalVariable(*M, Int32Ty, true, GlobalValue::ExternalLinkage,
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Constant::getAllOnesValue(Int32Ty), "var", nullptr,
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GlobalVariable::NotThreadLocal, 1);
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EXPECT_DEATH(Var->setAlignment(536870913U), "Alignment is not a power of 2");
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EXPECT_DEATH(Var->setAlignment(1073741824U),
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"Alignment is greater than MaximumAlignment");
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}
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#endif
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#endif
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TEST(ValueTest, printSlots) {
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// Check that Value::print() and Value::printAsOperand() work with and
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// without a slot tracker.
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LLVMContext C;
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const char *ModuleString = "@g0 = external global %500\n"
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"@g1 = external global %900\n"
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"\n"
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"%900 = type { i32, i32 }\n"
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"%500 = type { i32 }\n"
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"\n"
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"define void @f(i32 %x, i32 %y) {\n"
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"entry:\n"
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" %0 = add i32 %y, 1\n"
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" %1 = add i32 %y, 1\n"
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" ret void\n"
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"}\n";
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SMDiagnostic Err;
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std::unique_ptr<Module> M = parseAssemblyString(ModuleString, Err, C);
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Function *F = M->getFunction("f");
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ASSERT_TRUE(F);
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ASSERT_FALSE(F->empty());
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BasicBlock &BB = F->getEntryBlock();
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ASSERT_EQ(3u, BB.size());
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Instruction *I0 = &*BB.begin();
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ASSERT_TRUE(I0);
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Instruction *I1 = &*++BB.begin();
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ASSERT_TRUE(I1);
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GlobalVariable *G0 = M->getGlobalVariable("g0");
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ASSERT_TRUE(G0);
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GlobalVariable *G1 = M->getGlobalVariable("g1");
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ASSERT_TRUE(G1);
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ModuleSlotTracker MST(M.get());
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#define CHECK_PRINT(INST, STR) \
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do { \
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{ \
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std::string S; \
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raw_string_ostream OS(S); \
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INST->print(OS); \
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EXPECT_EQ(STR, OS.str()); \
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} \
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{ \
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std::string S; \
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raw_string_ostream OS(S); \
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INST->print(OS, MST); \
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EXPECT_EQ(STR, OS.str()); \
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} \
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} while (false)
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CHECK_PRINT(I0, " %0 = add i32 %y, 1");
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CHECK_PRINT(I1, " %1 = add i32 %y, 1");
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#undef CHECK_PRINT
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#define CHECK_PRINT_AS_OPERAND(INST, TYPE, STR) \
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do { \
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{ \
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std::string S; \
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raw_string_ostream OS(S); \
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INST->printAsOperand(OS, TYPE); \
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EXPECT_EQ(StringRef(STR), StringRef(OS.str())); \
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} \
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{ \
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std::string S; \
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raw_string_ostream OS(S); \
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INST->printAsOperand(OS, TYPE, MST); \
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EXPECT_EQ(StringRef(STR), StringRef(OS.str())); \
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} \
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} while (false)
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CHECK_PRINT_AS_OPERAND(I0, false, "%0");
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CHECK_PRINT_AS_OPERAND(I1, false, "%1");
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CHECK_PRINT_AS_OPERAND(I0, true, "i32 %0");
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CHECK_PRINT_AS_OPERAND(I1, true, "i32 %1");
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CHECK_PRINT_AS_OPERAND(G0, true, "%0* @g0");
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CHECK_PRINT_AS_OPERAND(G1, true, "%1* @g1");
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#undef CHECK_PRINT_AS_OPERAND
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}
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TEST(ValueTest, getLocalSlots) {
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// Verify that the getLocalSlot method returns the correct slot numbers.
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LLVMContext C;
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const char *ModuleString = "define void @f(i32 %x, i32 %y) {\n"
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"entry:\n"
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" %0 = add i32 %y, 1\n"
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" %1 = add i32 %y, 1\n"
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" br label %2\n"
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"\n"
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" ret void\n"
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"}\n";
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SMDiagnostic Err;
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std::unique_ptr<Module> M = parseAssemblyString(ModuleString, Err, C);
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Function *F = M->getFunction("f");
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ASSERT_TRUE(F);
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ASSERT_FALSE(F->empty());
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BasicBlock &EntryBB = F->getEntryBlock();
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ASSERT_EQ(3u, EntryBB.size());
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BasicBlock *BB2 = &*++F->begin();
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ASSERT_TRUE(BB2);
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Instruction *I0 = &*EntryBB.begin();
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ASSERT_TRUE(I0);
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Instruction *I1 = &*++EntryBB.begin();
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ASSERT_TRUE(I1);
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ModuleSlotTracker MST(M.get());
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MST.incorporateFunction(*F);
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EXPECT_EQ(MST.getLocalSlot(I0), 0);
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EXPECT_EQ(MST.getLocalSlot(I1), 1);
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EXPECT_EQ(MST.getLocalSlot(&EntryBB), -1);
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EXPECT_EQ(MST.getLocalSlot(BB2), 2);
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}
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#if defined(GTEST_HAS_DEATH_TEST) && !defined(NDEBUG)
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TEST(ValueTest, getLocalSlotDeath) {
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LLVMContext C;
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const char *ModuleString = "define void @f(i32 %x, i32 %y) {\n"
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"entry:\n"
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" %0 = add i32 %y, 1\n"
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" %1 = add i32 %y, 1\n"
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" br label %2\n"
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"\n"
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" ret void\n"
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"}\n";
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SMDiagnostic Err;
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std::unique_ptr<Module> M = parseAssemblyString(ModuleString, Err, C);
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Function *F = M->getFunction("f");
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ASSERT_TRUE(F);
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ASSERT_FALSE(F->empty());
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BasicBlock *BB2 = &*++F->begin();
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ASSERT_TRUE(BB2);
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ModuleSlotTracker MST(M.get());
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EXPECT_DEATH(MST.getLocalSlot(BB2), "No function incorporated");
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}
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#endif
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} // end anonymous namespace
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