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70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
//===- ModuleUtilsTest.cpp - Unit tests for Module utility ----===//
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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/Transforms/Utils/ModuleUtils.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/AsmParser/Parser.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Module.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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static std::unique_ptr<Module> parseIR(LLVMContext &C, const char *IR) {
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SMDiagnostic Err;
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std::unique_ptr<Module> Mod = parseAssemblyString(IR, Err, C);
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if (!Mod)
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Err.print("ModuleUtilsTest", errs());
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return Mod;
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}
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static int getUsedListSize(Module &M, StringRef Name) {
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auto *UsedList = M.getGlobalVariable(Name);
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if (!UsedList)
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return 0;
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auto *UsedListBaseArrayType = cast<ArrayType>(UsedList->getValueType());
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return UsedListBaseArrayType->getNumElements();
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}
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TEST(ModuleUtils, AppendToUsedList1) {
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LLVMContext C;
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std::unique_ptr<Module> M = parseIR(
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C, R"(@x = addrspace(4) global [2 x i32] zeroinitializer, align 4)");
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SmallVector<GlobalValue *, 2> Globals;
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for (auto &G : M->globals()) {
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Globals.push_back(&G);
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}
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EXPECT_EQ(0, getUsedListSize(*M, "llvm.compiler.used"));
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appendToCompilerUsed(*M, Globals);
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EXPECT_EQ(1, getUsedListSize(*M, "llvm.compiler.used"));
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EXPECT_EQ(0, getUsedListSize(*M, "llvm.used"));
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appendToUsed(*M, Globals);
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EXPECT_EQ(1, getUsedListSize(*M, "llvm.used"));
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}
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TEST(ModuleUtils, AppendToUsedList2) {
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LLVMContext C;
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std::unique_ptr<Module> M =
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parseIR(C, R"(@x = global [2 x i32] zeroinitializer, align 4)");
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SmallVector<GlobalValue *, 2> Globals;
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for (auto &G : M->globals()) {
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Globals.push_back(&G);
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}
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EXPECT_EQ(0, getUsedListSize(*M, "llvm.compiler.used"));
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appendToCompilerUsed(*M, Globals);
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EXPECT_EQ(1, getUsedListSize(*M, "llvm.compiler.used"));
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EXPECT_EQ(0, getUsedListSize(*M, "llvm.used"));
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appendToUsed(*M, Globals);
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EXPECT_EQ(1, getUsedListSize(*M, "llvm.used"));
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}
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