llvm-6502/unittests/IR/ValueTest.cpp
Alex Lorenz 9adb2129bd IR: Expose the method 'getLocalSlot' in the module slot tracker.
This commit publicly exposes the method 'getLocalSlot' in the
'ModuleSlotTracker' class.

This change is useful for MIR serialization, to serialize the unnamed basic
block and unnamed alloca references.

Reviewers: Duncan P. N. Exon Smith


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243336 91177308-0d34-0410-b5e6-96231b3b80d8
2015-07-27 22:31:04 +00:00

239 lines
9.2 KiB
C++

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