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//===--- GlobalsModRefTest.cpp - Mixed TBAA unit tests --------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/GlobalsModRef.h"
#include "llvm/AsmParser/Parser.h"
#include "llvm/Support/SourceMgr.h"
#include "gtest/gtest.h"
using namespace llvm;
TEST(GlobalsModRef, OptNone) {
StringRef Assembly = R"(
define void @f1() optnone {
ret void
}
define void @f2() optnone readnone {
ret void
}
define void @f3() optnone readonly {
ret void
}
)";
LLVMContext Context;
SMDiagnostic Error;
auto M = parseAssemblyString(Assembly, Error, Context);
ASSERT_TRUE(M) << "Bad assembly?";
const auto &funcs = M->functions();
auto I = funcs.begin();
ASSERT_NE(I, funcs.end());
const Function &F1 = *I;
ASSERT_NE(++I, funcs.end());
const Function &F2 = *I;
ASSERT_NE(++I, funcs.end());
const Function &F3 = *I;
EXPECT_EQ(++I, funcs.end());
Triple Trip(M->getTargetTriple());
TargetLibraryInfoImpl TLII(Trip);
TargetLibraryInfo TLI(TLII);
llvm::CallGraph CG(*M);
auto AAR = GlobalsAAResult::analyzeModule(*M, TLI, CG);
EXPECT_EQ(FMRB_UnknownModRefBehavior, AAR.getModRefBehavior(&F1));
EXPECT_EQ(FMRB_DoesNotAccessMemory, AAR.getModRefBehavior(&F2));
EXPECT_EQ(FMRB_OnlyReadsMemory, AAR.getModRefBehavior(&F3));
}
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