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58 lines
1.7 KiB
C++
58 lines
1.7 KiB
C++
//===--- GlobalsModRefTest.cpp - Mixed TBAA 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/Analysis/GlobalsModRef.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/Analysis/CallGraph.h"
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#include "llvm/AsmParser/Parser.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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TEST(GlobalsModRef, OptNone) {
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StringRef Assembly = R"(
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define void @f1() optnone {
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ret void
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}
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define void @f2() optnone readnone {
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ret void
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}
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define void @f3() optnone readonly {
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ret void
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}
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)";
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LLVMContext Context;
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SMDiagnostic Error;
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auto M = parseAssemblyString(Assembly, Error, Context);
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ASSERT_TRUE(M) << "Bad assembly?";
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const auto &funcs = M->functions();
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auto I = funcs.begin();
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ASSERT_NE(I, funcs.end());
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const Function &F1 = *I;
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ASSERT_NE(++I, funcs.end());
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const Function &F2 = *I;
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ASSERT_NE(++I, funcs.end());
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const Function &F3 = *I;
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EXPECT_EQ(++I, funcs.end());
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Triple Trip(M->getTargetTriple());
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TargetLibraryInfoImpl TLII(Trip);
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TargetLibraryInfo TLI(TLII);
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auto GetTLI = [&TLI](Function &F) -> TargetLibraryInfo & { return TLI; };
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llvm::CallGraph CG(*M);
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auto AAR = GlobalsAAResult::analyzeModule(*M, GetTLI, CG);
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EXPECT_EQ(FMRB_UnknownModRefBehavior, AAR.getModRefBehavior(&F1));
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EXPECT_EQ(FMRB_DoesNotAccessMemory, AAR.getModRefBehavior(&F2));
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EXPECT_EQ(FMRB_OnlyReadsMemory, AAR.getModRefBehavior(&F3));
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}
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