1 //===--- GlobalsModRefTest.cpp - Mixed TBAA unit tests --------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/Analysis/GlobalsModRef.h" 10 #include "llvm/ADT/Triple.h" 11 #include "llvm/Analysis/CallGraph.h" 12 #include "llvm/Analysis/TargetLibraryInfo.h" 13 #include "llvm/AsmParser/Parser.h" 14 #include "llvm/Support/SourceMgr.h" 15 #include "gtest/gtest.h" 16 17 using namespace llvm; 18 19 TEST(GlobalsModRef, OptNone) { 20 StringRef Assembly = R"( 21 define void @f1() optnone { 22 ret void 23 } 24 define void @f2() optnone readnone { 25 ret void 26 } 27 define void @f3() optnone readonly { 28 ret void 29 } 30 )"; 31 32 LLVMContext Context; 33 SMDiagnostic Error; 34 auto M = parseAssemblyString(Assembly, Error, Context); 35 ASSERT_TRUE(M) << "Bad assembly?"; 36 37 const auto &funcs = M->functions(); 38 auto I = funcs.begin(); 39 ASSERT_NE(I, funcs.end()); 40 const Function &F1 = *I; 41 ASSERT_NE(++I, funcs.end()); 42 const Function &F2 = *I; 43 ASSERT_NE(++I, funcs.end()); 44 const Function &F3 = *I; 45 EXPECT_EQ(++I, funcs.end()); 46 47 Triple Trip(M->getTargetTriple()); 48 TargetLibraryInfoImpl TLII(Trip); 49 TargetLibraryInfo TLI(TLII); 50 auto GetTLI = [&TLI](Function &F) -> TargetLibraryInfo & { return TLI; }; 51 llvm::CallGraph CG(*M); 52 53 auto AAR = GlobalsAAResult::analyzeModule(*M, GetTLI, CG); 54 55 EXPECT_EQ(MemoryEffects::unknown(), AAR.getMemoryEffects(&F1)); 56 EXPECT_EQ(MemoryEffects::none(), AAR.getMemoryEffects(&F2)); 57 EXPECT_EQ(MemoryEffects::readOnly(), AAR.getMemoryEffects(&F3)); 58 } 59