mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 03:33:20 +01:00
c568d201c5
Summary: In rL291613, the section name was interned in LLVMContext. However, this broke the ability to remove the section from a GlobalObject, because it tried to intern empty strings, which is not allowed. Fix that and add an appropriate regression test. Reviewed By: rnk Differential Revision: https://reviews.llvm.org/D29795 llvm-svn: 295238
134 lines
3.9 KiB
C++
134 lines
3.9 KiB
C++
//===- FunctionTest.cpp - Function 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/IR/Function.h"
|
|
#include "llvm/IR/Module.h"
|
|
#include "gtest/gtest.h"
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
|
|
TEST(FunctionTest, hasLazyArguments) {
|
|
LLVMContext C;
|
|
|
|
Type *ArgTypes[] = {Type::getInt8Ty(C), Type::getInt32Ty(C)};
|
|
FunctionType *FTy = FunctionType::get(Type::getVoidTy(C), ArgTypes, false);
|
|
|
|
// Functions start out with lazy arguments.
|
|
std::unique_ptr<Function> F(
|
|
Function::Create(FTy, GlobalValue::ExternalLinkage, "F"));
|
|
EXPECT_TRUE(F->hasLazyArguments());
|
|
|
|
// Checking for empty or size shouldn't force arguments to be instantiated.
|
|
EXPECT_FALSE(F->arg_empty());
|
|
EXPECT_TRUE(F->hasLazyArguments());
|
|
EXPECT_EQ(2u, F->arg_size());
|
|
EXPECT_TRUE(F->hasLazyArguments());
|
|
|
|
// The argument list should be populated at first access.
|
|
(void)F->arg_begin();
|
|
EXPECT_FALSE(F->hasLazyArguments());
|
|
}
|
|
|
|
TEST(FunctionTest, stealArgumentListFrom) {
|
|
LLVMContext C;
|
|
|
|
Type *ArgTypes[] = {Type::getInt8Ty(C), Type::getInt32Ty(C)};
|
|
FunctionType *FTy = FunctionType::get(Type::getVoidTy(C), ArgTypes, false);
|
|
std::unique_ptr<Function> F1(
|
|
Function::Create(FTy, GlobalValue::ExternalLinkage, "F1"));
|
|
std::unique_ptr<Function> F2(
|
|
Function::Create(FTy, GlobalValue::ExternalLinkage, "F1"));
|
|
EXPECT_TRUE(F1->hasLazyArguments());
|
|
EXPECT_TRUE(F2->hasLazyArguments());
|
|
|
|
// Steal arguments before they've been accessed. Nothing should change; both
|
|
// functions should still have lazy arguments.
|
|
//
|
|
// steal(empty); drop (empty)
|
|
F1->stealArgumentListFrom(*F2);
|
|
EXPECT_TRUE(F1->hasLazyArguments());
|
|
EXPECT_TRUE(F2->hasLazyArguments());
|
|
|
|
// Save arguments from F1 for later assertions. F1 won't have lazy arguments
|
|
// anymore.
|
|
SmallVector<Argument *, 4> Args;
|
|
for (Argument &A : F1->args())
|
|
Args.push_back(&A);
|
|
EXPECT_EQ(2u, Args.size());
|
|
EXPECT_FALSE(F1->hasLazyArguments());
|
|
|
|
// Steal arguments from F1 to F2. F1's arguments should be lazy again.
|
|
//
|
|
// steal(real); drop (empty)
|
|
F2->stealArgumentListFrom(*F1);
|
|
EXPECT_TRUE(F1->hasLazyArguments());
|
|
EXPECT_FALSE(F2->hasLazyArguments());
|
|
unsigned I = 0;
|
|
for (Argument &A : F2->args()) {
|
|
EXPECT_EQ(Args[I], &A);
|
|
I++;
|
|
}
|
|
EXPECT_EQ(2u, I);
|
|
|
|
// Check that arguments in F1 don't have pointer equality with the saved ones.
|
|
// This also instantiates F1's arguments.
|
|
I = 0;
|
|
for (Argument &A : F1->args()) {
|
|
EXPECT_NE(Args[I], &A);
|
|
I++;
|
|
}
|
|
EXPECT_EQ(2u, I);
|
|
EXPECT_FALSE(F1->hasLazyArguments());
|
|
EXPECT_FALSE(F2->hasLazyArguments());
|
|
|
|
// Steal back from F2. F2's arguments should be lazy again.
|
|
//
|
|
// steal(real); drop (real)
|
|
F1->stealArgumentListFrom(*F2);
|
|
EXPECT_FALSE(F1->hasLazyArguments());
|
|
EXPECT_TRUE(F2->hasLazyArguments());
|
|
I = 0;
|
|
for (Argument &A : F1->args()) {
|
|
EXPECT_EQ(Args[I], &A);
|
|
I++;
|
|
}
|
|
EXPECT_EQ(2u, I);
|
|
|
|
// Steal from F2 a second time. Now both functions should have lazy
|
|
// arguments.
|
|
//
|
|
// steal(empty); drop (real)
|
|
F1->stealArgumentListFrom(*F2);
|
|
EXPECT_TRUE(F1->hasLazyArguments());
|
|
EXPECT_TRUE(F2->hasLazyArguments());
|
|
}
|
|
|
|
// Test setting and removing section information
|
|
TEST(FunctionTest, setSection) {
|
|
LLVMContext C;
|
|
Module M("test", C);
|
|
|
|
llvm::Function *F =
|
|
Function::Create(llvm::FunctionType::get(llvm::Type::getVoidTy(C), false),
|
|
llvm::GlobalValue::ExternalLinkage, "F", &M);
|
|
|
|
F->setSection(".text.test");
|
|
EXPECT_TRUE(F->getSection() == ".text.test");
|
|
EXPECT_TRUE(F->hasSection());
|
|
F->setSection("");
|
|
EXPECT_FALSE(F->hasSection());
|
|
F->setSection(".text.test");
|
|
F->setSection(".text.test2");
|
|
EXPECT_TRUE(F->getSection() == ".text.test2");
|
|
EXPECT_TRUE(F->hasSection());
|
|
}
|
|
|
|
} // end namespace
|