1 //=== unittests/CodeGen/IncrementalProcessingTest.cpp - IncrementalCodeGen ===// 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 "InterpreterTestFixture.h" 10 11 #include "clang/AST/ASTConsumer.h" 12 #include "clang/AST/ASTContext.h" 13 #include "clang/AST/RecursiveASTVisitor.h" 14 #include "clang/Basic/TargetInfo.h" 15 #include "clang/CodeGen/ModuleBuilder.h" 16 #include "clang/Frontend/CompilerInstance.h" 17 #include "clang/Interpreter/Interpreter.h" 18 #include "clang/Lex/Preprocessor.h" 19 #include "clang/Parse/Parser.h" 20 #include "clang/Sema/Sema.h" 21 22 #include "llvm/IR/LLVMContext.h" 23 #include "llvm/IR/Module.h" 24 #include "llvm/TargetParser/Host.h" 25 #include "llvm/TargetParser/Triple.h" 26 27 #include "gtest/gtest.h" 28 29 #include <memory> 30 31 #if defined(_AIX) || defined(__MVS__) 32 #define CLANG_INTERPRETER_PLATFORM_CANNOT_CREATE_LLJIT 33 #endif 34 35 using namespace llvm; 36 using namespace clang; 37 38 namespace { 39 40 class IncrementalProcessingTest : public InterpreterTestBase {}; 41 42 // Incremental processing produces several modules, all using the same "main 43 // file". Make sure CodeGen can cope with that, e.g. for static initializers. 44 const char TestProgram1[] = "extern \"C\" int funcForProg1() { return 17; }\n" 45 "struct EmitCXXGlobalInitFunc1 {\n" 46 " EmitCXXGlobalInitFunc1() {}\n" 47 "} test1;"; 48 49 const char TestProgram2[] = "extern \"C\" int funcForProg2() { return 42; }\n" 50 "struct EmitCXXGlobalInitFunc2 {\n" 51 " EmitCXXGlobalInitFunc2() {}\n" 52 "} test2;"; 53 getGlobalInit(llvm::Module * M)54const Function *getGlobalInit(llvm::Module *M) { 55 for (const auto &Func : *M) 56 if (Func.hasName() && Func.getName().starts_with("_GLOBAL__sub_I_")) 57 return &Func; 58 59 return nullptr; 60 } 61 TEST_F(IncrementalProcessingTest,EmitCXXGlobalInitFunc)62TEST_F(IncrementalProcessingTest, EmitCXXGlobalInitFunc) { 63 std::vector<const char *> ClangArgv = {"-Xclang", "-emit-llvm-only"}; 64 auto CB = clang::IncrementalCompilerBuilder(); 65 CB.SetCompilerArgs(ClangArgv); 66 auto CI = cantFail(CB.CreateCpp()); 67 auto Interp = llvm::cantFail(Interpreter::create(std::move(CI))); 68 69 std::array<clang::PartialTranslationUnit *, 2> PTUs; 70 71 PTUs[0] = &llvm::cantFail(Interp->Parse(TestProgram1)); 72 ASSERT_TRUE(PTUs[0]->TheModule); 73 ASSERT_TRUE(PTUs[0]->TheModule->getFunction("funcForProg1")); 74 75 PTUs[1] = &llvm::cantFail(Interp->Parse(TestProgram2)); 76 ASSERT_TRUE(PTUs[1]->TheModule); 77 ASSERT_TRUE(PTUs[1]->TheModule->getFunction("funcForProg2")); 78 // First code should not end up in second module: 79 ASSERT_FALSE(PTUs[1]->TheModule->getFunction("funcForProg1")); 80 81 // Make sure global inits exist and are unique: 82 const Function *GlobalInit1 = getGlobalInit(PTUs[0]->TheModule.get()); 83 ASSERT_TRUE(GlobalInit1); 84 85 const Function *GlobalInit2 = getGlobalInit(PTUs[1]->TheModule.get()); 86 ASSERT_TRUE(GlobalInit2); 87 88 ASSERT_FALSE(GlobalInit1->getName() == GlobalInit2->getName()); 89 } 90 91 } // end anonymous namespace 92