|
150
|
1 //===- unittests/CodeGen/CodeGenExternalTest.cpp - test external CodeGen -===//
|
|
|
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
|
|
221
|
9 #include "TestCompiler.h"
|
|
|
10
|
|
150
|
11 #include "clang/AST/ASTConsumer.h"
|
|
|
12 #include "clang/AST/ASTContext.h"
|
|
|
13 #include "clang/AST/GlobalDecl.h"
|
|
|
14 #include "clang/AST/RecursiveASTVisitor.h"
|
|
|
15 #include "clang/Basic/TargetInfo.h"
|
|
|
16 #include "clang/CodeGen/CodeGenABITypes.h"
|
|
|
17 #include "clang/CodeGen/ModuleBuilder.h"
|
|
|
18 #include "clang/Frontend/CompilerInstance.h"
|
|
|
19 #include "clang/Lex/Preprocessor.h"
|
|
|
20 #include "clang/Parse/ParseAST.h"
|
|
|
21 #include "clang/Sema/Sema.h"
|
|
|
22 #include "llvm/IR/Instructions.h"
|
|
|
23 #include "llvm/IR/LLVMContext.h"
|
|
|
24 #include "llvm/Support/Debug.h"
|
|
|
25 #include "llvm/Support/MemoryBuffer.h"
|
|
252
|
26 #include "llvm/TargetParser/Host.h"
|
|
|
27 #include "llvm/TargetParser/Triple.h"
|
|
150
|
28 #include "gtest/gtest.h"
|
|
|
29
|
|
|
30 using namespace llvm;
|
|
|
31 using namespace clang;
|
|
|
32
|
|
|
33 namespace {
|
|
|
34
|
|
|
35 // Mocks up a language using Clang code generation as a library and
|
|
|
36 // tests some basic functionality there.
|
|
|
37 // - CodeGen->GetAddrOfGlobal
|
|
|
38 // - CodeGen::convertTypeForMemory
|
|
|
39 // - CodeGen::getLLVMFieldNumber
|
|
|
40
|
|
|
41 static const bool DebugThisTest = false;
|
|
|
42
|
|
|
43 // forward declarations
|
|
|
44 struct MyASTConsumer;
|
|
|
45 static void test_codegen_fns(MyASTConsumer *my);
|
|
|
46 static bool test_codegen_fns_ran;
|
|
|
47
|
|
|
48 // This forwards the calls to the Clang CodeGenerator
|
|
|
49 // so that we can test CodeGen functions while it is open.
|
|
|
50 // It accumulates toplevel decls in HandleTopLevelDecl and
|
|
|
51 // calls test_codegen_fns() in HandleTranslationUnit
|
|
|
52 // before forwarding that function to the CodeGenerator.
|
|
|
53
|
|
|
54 struct MyASTConsumer : public ASTConsumer {
|
|
|
55 std::unique_ptr<CodeGenerator> Builder;
|
|
|
56 std::vector<Decl*> toplevel_decls;
|
|
|
57
|
|
|
58 MyASTConsumer(std::unique_ptr<CodeGenerator> Builder_in)
|
|
|
59 : ASTConsumer(), Builder(std::move(Builder_in))
|
|
|
60 {
|
|
|
61 }
|
|
|
62
|
|
|
63 ~MyASTConsumer() { }
|
|
|
64
|
|
|
65 void Initialize(ASTContext &Context) override;
|
|
|
66 void HandleCXXStaticMemberVarInstantiation(VarDecl *VD) override;
|
|
|
67 bool HandleTopLevelDecl(DeclGroupRef D) override;
|
|
|
68 void HandleInlineFunctionDefinition(FunctionDecl *D) override;
|
|
|
69 void HandleInterestingDecl(DeclGroupRef D) override;
|
|
|
70 void HandleTranslationUnit(ASTContext &Ctx) override;
|
|
|
71 void HandleTagDeclDefinition(TagDecl *D) override;
|
|
|
72 void HandleTagDeclRequiredDefinition(const TagDecl *D) override;
|
|
|
73 void HandleCXXImplicitFunctionInstantiation(FunctionDecl *D) override;
|
|
|
74 void HandleTopLevelDeclInObjCContainer(DeclGroupRef D) override;
|
|
|
75 void HandleImplicitImportDecl(ImportDecl *D) override;
|
|
|
76 void CompleteTentativeDefinition(VarDecl *D) override;
|
|
|
77 void AssignInheritanceModel(CXXRecordDecl *RD) override;
|
|
|
78 void HandleVTable(CXXRecordDecl *RD) override;
|
|
|
79 ASTMutationListener *GetASTMutationListener() override;
|
|
|
80 ASTDeserializationListener *GetASTDeserializationListener() override;
|
|
|
81 void PrintStats() override;
|
|
|
82 bool shouldSkipFunctionBody(Decl *D) override;
|
|
|
83 };
|
|
|
84
|
|
|
85 void MyASTConsumer::Initialize(ASTContext &Context) {
|
|
|
86 Builder->Initialize(Context);
|
|
|
87 }
|
|
|
88
|
|
|
89 bool MyASTConsumer::HandleTopLevelDecl(DeclGroupRef DG) {
|
|
|
90
|
|
|
91 for (DeclGroupRef::iterator I = DG.begin(), E = DG.end(); I != E; ++I) {
|
|
|
92 toplevel_decls.push_back(*I);
|
|
|
93 }
|
|
|
94
|
|
|
95 return Builder->HandleTopLevelDecl(DG);
|
|
|
96 }
|
|
|
97
|
|
|
98 void MyASTConsumer::HandleInlineFunctionDefinition(FunctionDecl *D) {
|
|
|
99 Builder->HandleInlineFunctionDefinition(D);
|
|
|
100 }
|
|
|
101
|
|
|
102 void MyASTConsumer::HandleInterestingDecl(DeclGroupRef D) {
|
|
|
103 Builder->HandleInterestingDecl(D);
|
|
|
104 }
|
|
|
105
|
|
|
106 void MyASTConsumer::HandleTranslationUnit(ASTContext &Context) {
|
|
|
107 test_codegen_fns(this);
|
|
|
108 // HandleTranslationUnit can close the module
|
|
|
109 Builder->HandleTranslationUnit(Context);
|
|
|
110 }
|
|
|
111
|
|
|
112 void MyASTConsumer::HandleTagDeclDefinition(TagDecl *D) {
|
|
|
113 Builder->HandleTagDeclDefinition(D);
|
|
|
114 }
|
|
|
115
|
|
|
116 void MyASTConsumer::HandleTagDeclRequiredDefinition(const TagDecl *D) {
|
|
|
117 Builder->HandleTagDeclRequiredDefinition(D);
|
|
|
118 }
|
|
|
119
|
|
|
120 void MyASTConsumer::HandleCXXImplicitFunctionInstantiation(FunctionDecl *D) {
|
|
|
121 Builder->HandleCXXImplicitFunctionInstantiation(D);
|
|
|
122 }
|
|
|
123
|
|
|
124 void MyASTConsumer::HandleTopLevelDeclInObjCContainer(DeclGroupRef D) {
|
|
|
125 Builder->HandleTopLevelDeclInObjCContainer(D);
|
|
|
126 }
|
|
|
127
|
|
|
128 void MyASTConsumer::HandleImplicitImportDecl(ImportDecl *D) {
|
|
|
129 Builder->HandleImplicitImportDecl(D);
|
|
|
130 }
|
|
|
131
|
|
|
132 void MyASTConsumer::CompleteTentativeDefinition(VarDecl *D) {
|
|
|
133 Builder->CompleteTentativeDefinition(D);
|
|
|
134 }
|
|
|
135
|
|
|
136 void MyASTConsumer::AssignInheritanceModel(CXXRecordDecl *RD) {
|
|
|
137 Builder->AssignInheritanceModel(RD);
|
|
|
138 }
|
|
|
139
|
|
|
140 void MyASTConsumer::HandleCXXStaticMemberVarInstantiation(VarDecl *VD) {
|
|
|
141 Builder->HandleCXXStaticMemberVarInstantiation(VD);
|
|
|
142 }
|
|
|
143
|
|
|
144 void MyASTConsumer::HandleVTable(CXXRecordDecl *RD) {
|
|
|
145 Builder->HandleVTable(RD);
|
|
|
146 }
|
|
|
147
|
|
|
148 ASTMutationListener *MyASTConsumer::GetASTMutationListener() {
|
|
|
149 return Builder->GetASTMutationListener();
|
|
|
150 }
|
|
|
151
|
|
|
152 ASTDeserializationListener *MyASTConsumer::GetASTDeserializationListener() {
|
|
|
153 return Builder->GetASTDeserializationListener();
|
|
|
154 }
|
|
|
155
|
|
|
156 void MyASTConsumer::PrintStats() {
|
|
|
157 Builder->PrintStats();
|
|
|
158 }
|
|
|
159
|
|
|
160 bool MyASTConsumer::shouldSkipFunctionBody(Decl *D) {
|
|
|
161 return Builder->shouldSkipFunctionBody(D);
|
|
|
162 }
|
|
|
163
|
|
|
164 const char TestProgram[] =
|
|
|
165 "struct mytest_struct { char x; short y; char p; long z; };\n"
|
|
|
166 "int mytest_fn(int x) { return x; }\n";
|
|
|
167
|
|
|
168 // This function has the real test code here
|
|
|
169 static void test_codegen_fns(MyASTConsumer *my) {
|
|
|
170
|
|
|
171 bool mytest_fn_ok = false;
|
|
|
172 bool mytest_struct_ok = false;
|
|
|
173
|
|
|
174 CodeGen::CodeGenModule &CGM = my->Builder->CGM();
|
|
|
175
|
|
|
176 for (auto decl : my->toplevel_decls ) {
|
|
|
177 if (FunctionDecl *fd = dyn_cast<FunctionDecl>(decl)) {
|
|
|
178 if (fd->getName() == "mytest_fn") {
|
|
|
179 Constant *c = my->Builder->GetAddrOfGlobal(GlobalDecl(fd), false);
|
|
|
180 // Verify that we got a function.
|
|
|
181 ASSERT_TRUE(c != NULL);
|
|
|
182 if (DebugThisTest) {
|
|
|
183 c->print(dbgs(), true);
|
|
|
184 dbgs() << "\n";
|
|
|
185 }
|
|
|
186 mytest_fn_ok = true;
|
|
|
187 }
|
|
|
188 } else if(clang::RecordDecl *rd = dyn_cast<RecordDecl>(decl)) {
|
|
|
189 if (rd->getName() == "mytest_struct") {
|
|
|
190 RecordDecl *def = rd->getDefinition();
|
|
|
191 ASSERT_TRUE(def != NULL);
|
|
|
192 const clang::Type *clangTy = rd->getCanonicalDecl()->getTypeForDecl();
|
|
|
193 ASSERT_TRUE(clangTy != NULL);
|
|
|
194 QualType qType = clangTy->getCanonicalTypeInternal();
|
|
|
195
|
|
|
196 // Check convertTypeForMemory
|
|
|
197 llvm::Type *llvmTy = CodeGen::convertTypeForMemory(CGM, qType);
|
|
|
198 ASSERT_TRUE(llvmTy != NULL);
|
|
|
199 if (DebugThisTest) {
|
|
|
200 llvmTy->print(dbgs(), true);
|
|
|
201 dbgs() << "\n";
|
|
|
202 }
|
|
|
203
|
|
173
|
204 auto* structTy = dyn_cast<llvm::StructType>(llvmTy);
|
|
150
|
205 ASSERT_TRUE(structTy != NULL);
|
|
|
206
|
|
|
207 // Check getLLVMFieldNumber
|
|
|
208 FieldDecl *xField = NULL;
|
|
|
209 FieldDecl *yField = NULL;
|
|
|
210 FieldDecl *zField = NULL;
|
|
|
211
|
|
|
212 for (auto field : rd->fields()) {
|
|
|
213 if (field->getName() == "x") xField = field;
|
|
|
214 if (field->getName() == "y") yField = field;
|
|
|
215 if (field->getName() == "z") zField = field;
|
|
|
216 }
|
|
|
217
|
|
|
218 ASSERT_TRUE(xField != NULL);
|
|
|
219 ASSERT_TRUE(yField != NULL);
|
|
|
220 ASSERT_TRUE(zField != NULL);
|
|
|
221
|
|
|
222 unsigned x = CodeGen::getLLVMFieldNumber(CGM, rd, xField);
|
|
|
223 unsigned y = CodeGen::getLLVMFieldNumber(CGM, rd, yField);
|
|
|
224 unsigned z = CodeGen::getLLVMFieldNumber(CGM, rd, zField);
|
|
|
225
|
|
|
226 ASSERT_NE(x, y);
|
|
|
227 ASSERT_NE(y, z);
|
|
|
228
|
|
|
229 llvm::Type* xTy = structTy->getTypeAtIndex(x);
|
|
|
230 llvm::Type* yTy = structTy->getTypeAtIndex(y);
|
|
|
231 llvm::Type* zTy = structTy->getTypeAtIndex(z);
|
|
|
232
|
|
|
233 ASSERT_TRUE(xTy != NULL);
|
|
|
234 ASSERT_TRUE(yTy != NULL);
|
|
|
235 ASSERT_TRUE(zTy != NULL);
|
|
|
236
|
|
|
237 if (DebugThisTest) {
|
|
|
238 xTy->print(dbgs(), true);
|
|
|
239 dbgs() << "\n";
|
|
|
240 yTy->print(dbgs(), true);
|
|
|
241 dbgs() << "\n";
|
|
|
242 zTy->print(dbgs(), true);
|
|
|
243 dbgs() << "\n";
|
|
|
244 }
|
|
|
245
|
|
|
246 ASSERT_GE(xTy->getPrimitiveSizeInBits(), 1u);
|
|
|
247 ASSERT_GE(yTy->getPrimitiveSizeInBits(), 16u); // short is at least 16b
|
|
|
248 ASSERT_GE(zTy->getPrimitiveSizeInBits(), 32u); // long is at least 32b
|
|
|
249
|
|
|
250 mytest_struct_ok = true;
|
|
|
251 }
|
|
|
252 }
|
|
|
253 }
|
|
|
254
|
|
|
255 ASSERT_TRUE(mytest_fn_ok);
|
|
|
256 ASSERT_TRUE(mytest_struct_ok);
|
|
|
257
|
|
|
258 test_codegen_fns_ran = true;
|
|
|
259 }
|
|
|
260
|
|
|
261 TEST(CodeGenExternalTest, CodeGenExternalTest) {
|
|
221
|
262 clang::LangOptions LO;
|
|
|
263 LO.CPlusPlus = 1;
|
|
|
264 LO.CPlusPlus11 = 1;
|
|
|
265 TestCompiler Compiler(LO);
|
|
|
266 auto CustomASTConsumer
|
|
|
267 = std::make_unique<MyASTConsumer>(std::move(Compiler.CG));
|
|
150
|
268
|
|
221
|
269 Compiler.init(TestProgram, std::move(CustomASTConsumer));
|
|
150
|
270
|
|
221
|
271 clang::ParseAST(Compiler.compiler.getSema(), false, false);
|
|
150
|
272
|
|
221
|
273 ASSERT_TRUE(test_codegen_fns_ran);
|
|
150
|
274 }
|
|
|
275
|
|
|
276 } // end anonymous namespace
|
