Mercurial > projects > ldc
annotate gen/functions.cpp @ 129:8096ba7082db trunk
[svn r133] Fixed some problems with inlining not happening :P
Fixed problems with certain cases of deeply nested classes/functions.
| author | lindquist |
|---|---|
| date | Fri, 28 Dec 2007 22:55:24 +0100 |
| parents | facc562f5674 |
| children | 5825d48b27d1 |
| rev | line source |
|---|---|
| 100 | 1 #include "gen/llvm.h" |
| 2 | |
| 3 #include "mtype.h" | |
| 4 #include "aggregate.h" | |
| 5 #include "init.h" | |
| 6 #include "declaration.h" | |
| 7 #include "template.h" | |
| 8 #include "module.h" | |
| 9 #include "statement.h" | |
| 10 | |
| 11 #include "gen/irstate.h" | |
| 12 #include "gen/tollvm.h" | |
| 13 #include "gen/runtime.h" | |
| 14 #include "gen/arrays.h" | |
| 15 #include "gen/logger.h" | |
| 16 #include "gen/functions.h" | |
| 17 #include "gen/todebug.h" | |
| 18 #include "gen/classes.h" | |
| 19 | |
| 20 const llvm::FunctionType* DtoFunctionType(Type* type, const llvm::Type* thistype, bool ismain) | |
| 21 { | |
| 22 TypeFunction* f = (TypeFunction*)type; | |
| 23 assert(f != 0); | |
| 24 | |
| 25 if (type->llvmType != NULL) { | |
| 26 return llvm::cast<llvm::FunctionType>(type->llvmType->get()); | |
| 27 } | |
| 28 | |
| 29 bool typesafeVararg = false; | |
| 30 if (f->linkage == LINKd && f->varargs == 1) { | |
| 31 typesafeVararg = true; | |
| 32 } | |
| 33 | |
| 34 // return value type | |
| 35 const llvm::Type* rettype; | |
| 36 const llvm::Type* actualRettype; | |
| 37 Type* rt = f->next; | |
| 38 bool retinptr = false; | |
| 39 bool usesthis = false; | |
| 40 | |
| 41 if (ismain) { | |
| 42 rettype = llvm::Type::Int32Ty; | |
| 43 actualRettype = rettype; | |
| 44 } | |
| 45 else { | |
| 46 assert(rt); | |
|
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47 Type* rtfin = DtoDType(rt); |
| 100 | 48 if (DtoIsPassedByRef(rt)) { |
| 49 rettype = llvm::PointerType::get(DtoType(rt)); | |
| 50 actualRettype = llvm::Type::VoidTy; | |
| 51 f->llvmRetInPtr = retinptr = true; | |
| 52 } | |
| 53 else { | |
| 54 rettype = DtoType(rt); | |
| 55 actualRettype = rettype; | |
| 56 } | |
| 57 } | |
| 58 | |
| 59 // parameter types | |
| 60 std::vector<const llvm::Type*> paramvec; | |
| 61 | |
| 62 if (retinptr) { | |
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63 //Logger::cout() << "returning through pointer parameter: " << *rettype << '\n'; |
| 100 | 64 paramvec.push_back(rettype); |
| 65 } | |
| 66 | |
| 67 if (thistype) { | |
| 68 paramvec.push_back(thistype); | |
| 69 usesthis = true; | |
| 70 } | |
| 71 | |
| 72 if (typesafeVararg) { | |
| 73 ClassDeclaration* ti = Type::typeinfo; | |
| 74 ti->toObjFile(); | |
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75 DtoForceConstInitDsymbol(ti); |
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76 assert(ti->llvmConstInit); |
| 100 | 77 std::vector<const llvm::Type*> types; |
| 78 types.push_back(DtoSize_t()); | |
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79 types.push_back(llvm::PointerType::get(llvm::PointerType::get(ti->llvmConstInit->getType()))); |
| 100 | 80 const llvm::Type* t1 = llvm::StructType::get(types); |
| 81 paramvec.push_back(llvm::PointerType::get(t1)); | |
| 82 paramvec.push_back(llvm::PointerType::get(llvm::Type::Int8Ty)); | |
| 83 } | |
| 84 | |
| 85 size_t n = Argument::dim(f->parameters); | |
| 86 | |
| 87 for (int i=0; i < n; ++i) { | |
| 88 Argument* arg = Argument::getNth(f->parameters, i); | |
| 89 // ensure scalar | |
| 90 Type* argT = DtoDType(arg->type); | |
| 91 assert(argT); | |
| 92 | |
| 93 if ((arg->storageClass & STCref) || (arg->storageClass & STCout)) { | |
| 94 //assert(arg->vardecl); | |
| 95 //arg->vardecl->refparam = true; | |
| 96 } | |
| 97 else | |
| 98 arg->llvmCopy = true; | |
| 99 | |
| 100 const llvm::Type* at = DtoType(argT); | |
| 101 if (isaStruct(at)) { | |
| 102 Logger::println("struct param"); | |
| 103 paramvec.push_back(llvm::PointerType::get(at)); | |
| 104 } | |
| 105 else if (isaArray(at)) { | |
| 106 Logger::println("sarray param"); | |
| 107 assert(argT->ty == Tsarray); | |
| 108 //paramvec.push_back(llvm::PointerType::get(at->getContainedType(0))); | |
| 109 paramvec.push_back(llvm::PointerType::get(at)); | |
| 110 } | |
| 111 else if (llvm::isa<llvm::OpaqueType>(at)) { | |
| 112 Logger::println("opaque param"); | |
| 113 assert(argT->ty == Tstruct || argT->ty == Tclass); | |
| 114 paramvec.push_back(llvm::PointerType::get(at)); | |
| 115 } | |
| 116 else { | |
| 117 if (!arg->llvmCopy) { | |
| 118 Logger::println("ref param"); | |
| 119 at = llvm::PointerType::get(at); | |
| 120 } | |
| 121 else { | |
| 122 Logger::println("in param"); | |
| 123 } | |
| 124 paramvec.push_back(at); | |
| 125 } | |
| 126 } | |
| 127 | |
| 128 // construct function type | |
| 129 bool isvararg = !typesafeVararg && f->varargs; | |
| 130 llvm::FunctionType* functype = llvm::FunctionType::get(actualRettype, paramvec, isvararg); | |
| 131 | |
| 132 f->llvmRetInPtr = retinptr; | |
| 133 f->llvmUsesThis = usesthis; | |
| 134 | |
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135 //if (!f->llvmType) |
| 100 | 136 f->llvmType = new llvm::PATypeHolder(functype); |
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137 //else |
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138 //assert(functype == f->llvmType->get()); |
| 100 | 139 |
| 140 return functype; | |
| 141 } | |
| 142 | |
| 143 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 144 | |
| 145 static const llvm::FunctionType* DtoVaFunctionType(FuncDeclaration* fdecl) | |
| 146 { | |
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147 // type has already been resolved |
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148 if (fdecl->type->llvmType != 0) { |
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149 return llvm::cast<llvm::FunctionType>(fdecl->type->llvmType->get()); |
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150 } |
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151 |
| 100 | 152 TypeFunction* f = (TypeFunction*)fdecl->type; |
| 153 assert(f != 0); | |
| 154 | |
| 155 const llvm::PointerType* i8pty = llvm::PointerType::get(llvm::Type::Int8Ty); | |
| 156 std::vector<const llvm::Type*> args; | |
| 157 | |
| 158 if (fdecl->llvmInternal == LLVMva_start) { | |
| 159 args.push_back(i8pty); | |
| 160 } | |
| 161 else if (fdecl->llvmInternal == LLVMva_intrinsic) { | |
| 162 size_t n = Argument::dim(f->parameters); | |
| 163 for (size_t i=0; i<n; ++i) { | |
| 164 args.push_back(i8pty); | |
| 165 } | |
| 166 } | |
| 167 else | |
| 168 assert(0); | |
| 169 | |
| 170 const llvm::FunctionType* fty = llvm::FunctionType::get(llvm::Type::VoidTy, args, false); | |
| 171 | |
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172 f->llvmType = new llvm::PATypeHolder(fty); |
| 100 | 173 |
| 174 return fty; | |
| 175 } | |
| 176 | |
| 177 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 178 | |
| 179 const llvm::FunctionType* DtoFunctionType(FuncDeclaration* fdecl) | |
| 180 { | |
| 181 if ((fdecl->llvmInternal == LLVMva_start) || (fdecl->llvmInternal == LLVMva_intrinsic)) { | |
| 182 return DtoVaFunctionType(fdecl); | |
| 183 } | |
| 184 | |
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185 // unittest has null type, just build it manually |
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186 /*if (fdecl->isUnitTestDeclaration()) { |
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187 std::vector<const llvm::Type*> args; |
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188 return llvm::FunctionType::get(llvm::Type::VoidTy, args, false); |
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189 }*/ |
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190 |
| 100 | 191 // type has already been resolved |
| 192 if (fdecl->type->llvmType != 0) { | |
| 193 return llvm::cast<llvm::FunctionType>(fdecl->type->llvmType->get()); | |
| 194 } | |
| 195 | |
| 196 const llvm::Type* thisty = NULL; | |
| 197 if (fdecl->needThis()) { | |
| 198 if (AggregateDeclaration* ad = fdecl->isMember()) { | |
| 199 Logger::print("isMember = this is: %s\n", ad->type->toChars()); | |
| 200 thisty = DtoType(ad->type); | |
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201 //Logger::cout() << "this llvm type: " << *thisty << '\n'; |
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202 if (isaStruct(thisty) || (!gIR->structs.empty() && thisty == gIR->topstruct()->recty.get())) |
| 100 | 203 thisty = llvm::PointerType::get(thisty); |
| 204 } | |
| 205 else | |
| 206 assert(0); | |
| 207 } | |
| 208 else if (fdecl->isNested()) { | |
| 209 thisty = llvm::PointerType::get(llvm::Type::Int8Ty); | |
| 210 } | |
| 211 | |
| 212 const llvm::FunctionType* functype = DtoFunctionType(fdecl->type, thisty, fdecl->isMain()); | |
| 213 | |
| 214 return functype; | |
| 215 } | |
| 216 | |
| 217 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 218 | |
| 219 static llvm::Function* DtoDeclareVaFunction(FuncDeclaration* fdecl) | |
| 220 { | |
| 221 TypeFunction* f = (TypeFunction*)DtoDType(fdecl->type); | |
| 222 const llvm::FunctionType* fty = DtoVaFunctionType(fdecl); | |
| 223 llvm::Constant* fn = 0; | |
| 224 | |
| 225 if (fdecl->llvmInternal == LLVMva_start) { | |
| 226 fn = gIR->module->getOrInsertFunction("llvm.va_start", fty); | |
| 227 assert(fn); | |
| 228 } | |
| 229 else if (fdecl->llvmInternal == LLVMva_intrinsic) { | |
| 230 fn = gIR->module->getOrInsertFunction(fdecl->llvmInternal1, fty); | |
| 231 assert(fn); | |
| 232 } | |
| 233 else | |
| 234 assert(0); | |
| 235 | |
| 236 llvm::Function* func = llvm::dyn_cast<llvm::Function>(fn); | |
| 237 assert(func); | |
| 238 assert(func->isIntrinsic()); | |
| 239 fdecl->llvmValue = func; | |
| 240 return func; | |
| 241 } | |
| 242 | |
| 243 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 244 | |
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245 void DtoResolveFunction(FuncDeclaration* fdecl) |
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246 { |
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247 if (!global.params.useUnitTests && fdecl->isUnitTestDeclaration()) { |
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248 return; // ignore declaration completely |
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249 } |
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250 |
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251 if (fdecl->llvmResolved) return; |
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252 fdecl->llvmResolved = true; |
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253 |
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254 Logger::println("DtoResolveFunction(%s)", fdecl->toPrettyChars()); |
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255 LOG_SCOPE; |
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256 |
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257 if (fdecl->llvmRunTimeHack) { |
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258 gIR->declareList.push_back(fdecl); |
| 127 | 259 TypeFunction* tf = (TypeFunction*)fdecl->type; |
| 260 tf->llvmRetInPtr = DtoIsPassedByRef(tf->next); | |
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261 return; |
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262 } |
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263 |
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264 if (fdecl->parent) |
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265 if (TemplateInstance* tinst = fdecl->parent->isTemplateInstance()) |
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266 { |
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267 TemplateDeclaration* tempdecl = tinst->tempdecl; |
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268 if (tempdecl->llvmInternal == LLVMva_arg) |
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269 { |
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270 Logger::println("magic va_arg found"); |
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271 fdecl->llvmInternal = LLVMva_arg; |
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272 fdecl->llvmDeclared = true; |
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273 fdecl->llvmInitialized = true; |
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274 fdecl->llvmDefined = true; |
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275 return; // this gets mapped to an instruction so a declaration makes no sence |
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276 } |
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277 else if (tempdecl->llvmInternal == LLVMva_start) |
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278 { |
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279 Logger::println("magic va_start found"); |
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280 fdecl->llvmInternal = LLVMva_start; |
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281 } |
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282 } |
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283 |
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284 DtoFunctionType(fdecl); |
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285 |
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286 // queue declaration |
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287 if (!fdecl->isAbstract()) |
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288 gIR->declareList.push_back(fdecl); |
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289 } |
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290 |
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291 ////////////////////////////////////////////////////////////////////////////////////////// |
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292 |
| 100 | 293 void DtoDeclareFunction(FuncDeclaration* fdecl) |
| 294 { | |
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295 if (fdecl->llvmDeclared) return; |
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296 fdecl->llvmDeclared = true; |
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297 |
| 100 | 298 Logger::println("DtoDeclareFunction(%s)", fdecl->toPrettyChars()); |
| 299 LOG_SCOPE; | |
| 300 | |
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301 assert(!fdecl->isAbstract()); |
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302 |
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303 // intrinsic sanity check |
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304 if (fdecl->llvmInternal == LLVMintrinsic && fdecl->fbody) { |
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305 error(fdecl->loc, "intrinsics cannot have function bodies"); |
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306 fatal(); |
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307 } |
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308 |
| 100 | 309 if (fdecl->llvmRunTimeHack) { |
| 310 Logger::println("runtime hack func chars: %s", fdecl->toChars()); | |
| 311 if (!fdecl->llvmValue) | |
| 312 fdecl->llvmValue = LLVM_D_GetRuntimeFunction(gIR->module, fdecl->toChars()); | |
| 313 return; | |
| 314 } | |
| 315 | |
| 316 bool declareOnly = false; | |
|
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317 bool templInst = fdecl->parent && DtoIsTemplateInstance(fdecl->parent); |
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318 if (!templInst && fdecl->getModule() != gIR->dmodule) |
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319 declareOnly = true; |
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320 else if (fdecl->llvmInternal == LLVMva_start) |
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321 declareOnly = true; |
| 100 | 322 |
| 323 if (!fdecl->llvmIRFunc) { | |
| 324 fdecl->llvmIRFunc = new IRFunction(fdecl); | |
| 325 } | |
| 326 | |
| 327 // mangled name | |
| 328 char* mangled_name; | |
| 329 if (fdecl->llvmInternal == LLVMintrinsic) | |
| 330 mangled_name = fdecl->llvmInternal1; | |
| 331 else | |
| 332 mangled_name = fdecl->mangle(); | |
| 333 | |
| 334 llvm::Function* vafunc = 0; | |
| 335 if ((fdecl->llvmInternal == LLVMva_start) || (fdecl->llvmInternal == LLVMva_intrinsic)) { | |
| 336 vafunc = DtoDeclareVaFunction(fdecl); | |
| 337 } | |
| 338 | |
| 339 Type* t = DtoDType(fdecl->type); | |
| 340 TypeFunction* f = (TypeFunction*)t; | |
| 341 | |
| 342 // construct function | |
| 343 const llvm::FunctionType* functype = DtoFunctionType(fdecl); | |
| 344 llvm::Function* func = vafunc ? vafunc : gIR->module->getFunction(mangled_name); | |
| 345 if (!func) | |
| 346 func = new llvm::Function(functype, DtoLinkage(fdecl->protection, fdecl->storage_class), mangled_name, gIR->module); | |
| 347 else | |
| 348 assert(func->getFunctionType() == functype); | |
| 349 | |
| 350 // add func to IRFunc | |
| 351 fdecl->llvmIRFunc->func = func; | |
| 352 | |
| 353 // calling convention | |
| 354 if (!vafunc && fdecl->llvmInternal != LLVMintrinsic) | |
| 355 func->setCallingConv(DtoCallingConv(f->linkage)); | |
| 356 | |
| 357 // template instances should have weak linkage | |
| 358 if (!vafunc && fdecl->llvmInternal != LLVMintrinsic && fdecl->parent && DtoIsTemplateInstance(fdecl->parent)) | |
| 359 func->setLinkage(llvm::GlobalValue::WeakLinkage); | |
| 360 | |
| 361 fdecl->llvmValue = func; | |
| 362 assert(llvm::isa<llvm::FunctionType>(f->llvmType->get())); | |
| 363 | |
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364 // main |
| 100 | 365 if (fdecl->isMain()) { |
| 366 gIR->mainFunc = func; | |
| 367 } | |
| 368 | |
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369 // static ctor |
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370 if (fdecl->isStaticCtorDeclaration()) { |
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371 gIR->ctors.push_back(fdecl); |
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372 } |
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373 // static dtor |
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374 else if (fdecl->isStaticDtorDeclaration()) { |
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375 gIR->dtors.push_back(fdecl); |
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376 } |
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377 |
| 100 | 378 // name parameters |
| 379 llvm::Function::arg_iterator iarg = func->arg_begin(); | |
| 380 int k = 0; | |
| 381 if (f->llvmRetInPtr) { | |
| 382 iarg->setName("retval"); | |
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383 fdecl->llvmRetArg = iarg; |
| 100 | 384 ++iarg; |
| 385 } | |
| 386 if (f->llvmUsesThis) { | |
| 387 iarg->setName("this"); | |
|
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388 fdecl->llvmThisVar = iarg; |
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389 assert(fdecl->llvmThisVar); |
| 100 | 390 ++iarg; |
| 391 } | |
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392 |
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393 if (f->linkage == LINKd && f->varargs == 1) { |
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394 iarg->setName("_arguments"); |
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395 fdecl->llvmArguments = iarg; |
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396 ++iarg; |
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397 iarg->setName("_argptr"); |
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398 fdecl->llvmArgPtr = iarg; |
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399 ++iarg; |
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400 } |
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401 |
| 100 | 402 for (; iarg != func->arg_end(); ++iarg) |
| 403 { | |
| 404 Argument* arg = Argument::getNth(f->parameters, k++); | |
| 405 //arg->llvmValue = iarg; | |
| 406 //Logger::println("identifier: '%s' %p\n", arg->ident->toChars(), arg->ident); | |
| 407 if (arg && arg->ident != 0) { | |
| 408 if (arg->vardecl) { | |
| 409 arg->vardecl->llvmValue = iarg; | |
| 410 } | |
| 411 iarg->setName(arg->ident->toChars()); | |
| 412 } | |
| 413 else { | |
| 414 iarg->setName("unnamed"); | |
| 415 } | |
| 416 } | |
| 417 | |
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418 if (fdecl->isUnitTestDeclaration()) |
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419 gIR->unitTests.push_back(fdecl); |
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420 |
| 100 | 421 if (!declareOnly) |
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422 gIR->defineList.push_back(fdecl); |
| 100 | 423 |
| 424 Logger::cout() << "func decl: " << *func << '\n'; | |
| 425 } | |
| 426 | |
| 427 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 428 | |
| 429 void DtoDefineFunc(FuncDeclaration* fd) | |
| 430 { | |
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431 if (fd->llvmDefined) return; |
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432 fd->llvmDefined = true; |
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433 |
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434 assert(fd->llvmDeclared); |
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435 |
|
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436 Logger::println("DtoDefineFunc(%s)", fd->toPrettyChars()); |
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437 LOG_SCOPE; |
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438 |
| 100 | 439 // debug info |
| 440 if (global.params.symdebug) { | |
| 441 Module* mo = fd->getModule(); | |
| 442 if (!mo->llvmCompileUnit) { | |
| 443 mo->llvmCompileUnit = DtoDwarfCompileUnit(mo,false); | |
| 444 } | |
| 445 fd->llvmDwarfSubProgram = DtoDwarfSubProgram(fd, mo->llvmCompileUnit); | |
| 446 } | |
| 447 | |
| 448 Type* t = DtoDType(fd->type); | |
| 449 TypeFunction* f = (TypeFunction*)t; | |
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450 assert(f->llvmType); |
| 100 | 451 |
| 452 llvm::Function* func = fd->llvmIRFunc->func; | |
| 453 const llvm::FunctionType* functype = func->getFunctionType(); | |
| 454 | |
| 455 // only members of the current module or template instances maybe be defined | |
| 456 if (fd->getModule() == gIR->dmodule || DtoIsTemplateInstance(fd->parent)) | |
| 457 { | |
| 458 fd->llvmDModule = gIR->dmodule; | |
| 459 | |
| 460 // function definition | |
| 461 if (fd->fbody != 0) | |
| 462 { | |
| 463 Logger::println("Doing function body for: %s", fd->toChars()); | |
| 464 assert(fd->llvmIRFunc); | |
| 465 gIR->functions.push_back(fd->llvmIRFunc); | |
| 466 | |
| 467 if (fd->isMain()) | |
| 468 gIR->emitMain = true; | |
| 469 | |
| 470 llvm::BasicBlock* beginbb = new llvm::BasicBlock("entry",func); | |
| 471 llvm::BasicBlock* endbb = new llvm::BasicBlock("endentry",func); | |
| 472 | |
| 473 //assert(gIR->scopes.empty()); | |
| 474 gIR->scopes.push_back(IRScope(beginbb, endbb)); | |
| 475 | |
| 476 // create alloca point | |
|
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477 llvm::Instruction* allocaPoint = new llvm::BitCastInst(llvm::ConstantInt::get(llvm::Type::Int32Ty,0,false),llvm::Type::Int32Ty,"alloca point",gIR->scopebb()); |
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478 gIR->func()->allocapoint = allocaPoint; |
| 100 | 479 |
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480 // need result variable? (not nested) |
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481 if (fd->vresult && !fd->vresult->nestedref) { |
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482 Logger::println("non-nested vresult value"); |
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483 fd->vresult->llvmValue = new llvm::AllocaInst(DtoType(fd->vresult->type),"function_vresult",allocaPoint); |
|
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484 } |
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485 |
| 100 | 486 // give arguments storage |
| 487 size_t n = Argument::dim(f->parameters); | |
| 488 for (int i=0; i < n; ++i) { | |
| 489 Argument* arg = Argument::getNth(f->parameters, i); | |
| 490 if (arg && arg->vardecl) { | |
| 491 VarDeclaration* vd = arg->vardecl; | |
| 492 if (!vd->llvmNeedsStorage || vd->nestedref || vd->isRef() || vd->isOut() || DtoIsPassedByRef(vd->type)) | |
| 493 continue; | |
| 494 llvm::Value* a = vd->llvmValue; | |
| 495 assert(a); | |
| 496 std::string s(a->getName()); | |
| 497 Logger::println("giving argument '%s' storage", s.c_str()); | |
| 498 s.append("_storage"); | |
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499 llvm::Value* v = new llvm::AllocaInst(a->getType(),s,allocaPoint); |
| 100 | 500 gIR->ir->CreateStore(a,v); |
| 501 vd->llvmValue = v; | |
| 502 } | |
| 503 else { | |
| 504 Logger::attention("some unknown argument: %s", arg ? arg->toChars() : 0); | |
| 505 } | |
| 506 } | |
| 507 | |
| 508 // debug info | |
| 509 if (global.params.symdebug) DtoDwarfFuncStart(fd); | |
| 510 | |
| 511 llvm::Value* parentNested = NULL; | |
| 512 if (FuncDeclaration* fd2 = fd->toParent()->isFuncDeclaration()) { | |
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513 if (!fd->isStatic()) |
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514 parentNested = fd2->llvmNested; |
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515 } |
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516 |
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517 // need result variable? (nested) |
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518 if (fd->vresult && fd->vresult->nestedref) { |
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519 Logger::println("nested vresult value: %s", fd->vresult->toChars()); |
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520 fd->llvmNestedVars.insert(fd->vresult); |
| 100 | 521 } |
| 522 | |
| 523 // construct nested variables struct | |
| 524 if (!fd->llvmNestedVars.empty() || parentNested) { | |
| 525 std::vector<const llvm::Type*> nestTypes; | |
| 526 int j = 0; | |
| 527 if (parentNested) { | |
| 528 nestTypes.push_back(parentNested->getType()); | |
| 529 j++; | |
| 530 } | |
| 531 for (std::set<VarDeclaration*>::iterator i=fd->llvmNestedVars.begin(); i!=fd->llvmNestedVars.end(); ++i) { | |
| 532 VarDeclaration* vd = *i; | |
| 533 vd->llvmNestedIndex = j++; | |
| 534 if (vd->isParameter()) { | |
| 535 assert(vd->llvmValue); | |
| 536 nestTypes.push_back(vd->llvmValue->getType()); | |
| 537 } | |
| 538 else { | |
| 539 nestTypes.push_back(DtoType(vd->type)); | |
| 540 } | |
| 541 } | |
| 542 const llvm::StructType* nestSType = llvm::StructType::get(nestTypes); | |
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543 Logger::cout() << "nested var struct has type:" << *nestSType << '\n'; |
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544 fd->llvmNested = new llvm::AllocaInst(nestSType,"nestedvars",allocaPoint); |
| 100 | 545 if (parentNested) { |
| 546 assert(fd->llvmThisVar); | |
| 547 llvm::Value* ptr = gIR->ir->CreateBitCast(fd->llvmThisVar, parentNested->getType(), "tmp"); | |
| 548 gIR->ir->CreateStore(ptr, DtoGEPi(fd->llvmNested, 0,0, "tmp")); | |
| 549 } | |
| 550 for (std::set<VarDeclaration*>::iterator i=fd->llvmNestedVars.begin(); i!=fd->llvmNestedVars.end(); ++i) { | |
| 551 VarDeclaration* vd = *i; | |
| 552 if (vd->isParameter()) { | |
| 553 gIR->ir->CreateStore(vd->llvmValue, DtoGEPi(fd->llvmNested, 0, vd->llvmNestedIndex, "tmp")); | |
| 554 vd->llvmValue = fd->llvmNested; | |
| 555 } | |
| 556 } | |
| 557 } | |
| 558 | |
| 559 // copy _argptr to a memory location | |
| 560 if (f->linkage == LINKd && f->varargs == 1) | |
| 561 { | |
| 562 llvm::Value* argptrmem = new llvm::AllocaInst(fd->llvmArgPtr->getType(), "_argptrmem", gIR->topallocapoint()); | |
| 563 new llvm::StoreInst(fd->llvmArgPtr, argptrmem, gIR->scopebb()); | |
| 564 fd->llvmArgPtr = argptrmem; | |
| 565 } | |
| 566 | |
| 567 // output function body | |
| 568 fd->fbody->toIR(gIR); | |
| 569 | |
| 570 // llvm requires all basic blocks to end with a TerminatorInst but DMD does not put a return statement | |
| 571 // in automatically, so we do it here. | |
| 572 if (!fd->isMain()) { | |
| 573 if (!gIR->scopereturned()) { | |
| 574 // pass the previous block into this block | |
| 575 if (global.params.symdebug) DtoDwarfFuncEnd(fd); | |
| 576 if (func->getReturnType() == llvm::Type::VoidTy) { | |
| 577 new llvm::ReturnInst(gIR->scopebb()); | |
| 578 } | |
| 579 else { | |
| 580 new llvm::ReturnInst(llvm::UndefValue::get(func->getReturnType()), gIR->scopebb()); | |
| 581 } | |
| 582 } | |
| 583 } | |
| 584 | |
| 585 // erase alloca point | |
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586 allocaPoint->eraseFromParent(); |
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587 allocaPoint = 0; |
| 100 | 588 gIR->func()->allocapoint = 0; |
| 589 | |
| 590 gIR->scopes.pop_back(); | |
| 591 | |
| 592 // get rid of the endentry block, it's never used | |
| 593 assert(!func->getBasicBlockList().empty()); | |
| 594 func->getBasicBlockList().pop_back(); | |
| 595 | |
| 596 // if the last block is empty now, it must be unreachable or it's a bug somewhere else | |
| 597 // would be nice to figure out how to assert that this is correct | |
| 598 llvm::BasicBlock* lastbb = &func->getBasicBlockList().back(); | |
| 599 if (lastbb->empty()) { | |
| 600 if (lastbb->getNumUses() == 0) | |
| 601 lastbb->eraseFromParent(); | |
| 602 else { | |
| 603 new llvm::UnreachableInst(lastbb); | |
| 604 /*if (func->getReturnType() == llvm::Type::VoidTy) { | |
| 605 new llvm::ReturnInst(lastbb); | |
| 606 } | |
| 607 else { | |
| 608 new llvm::ReturnInst(llvm::UndefValue::get(func->getReturnType()), lastbb); | |
| 609 }*/ | |
| 610 } | |
| 611 } | |
| 612 | |
| 613 gIR->functions.pop_back(); | |
| 614 } | |
| 615 } | |
| 616 } | |
| 617 | |
| 618 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 619 | |
| 620 void DtoMain() | |
| 621 { | |
| 622 // emit main function llvm style | |
| 623 // int main(int argc, char**argv, char**env); | |
| 624 | |
| 625 assert(gIR != 0); | |
| 626 IRState& ir = *gIR; | |
| 627 | |
| 628 assert(ir.emitMain && ir.mainFunc); | |
| 629 | |
| 630 // parameter types | |
| 631 std::vector<const llvm::Type*> pvec; | |
| 632 pvec.push_back((const llvm::Type*)llvm::Type::Int32Ty); | |
| 633 const llvm::Type* chPtrType = (const llvm::Type*)llvm::PointerType::get(llvm::Type::Int8Ty); | |
| 634 pvec.push_back((const llvm::Type*)llvm::PointerType::get(chPtrType)); | |
| 635 pvec.push_back((const llvm::Type*)llvm::PointerType::get(chPtrType)); | |
| 636 const llvm::Type* rettype = (const llvm::Type*)llvm::Type::Int32Ty; | |
| 637 | |
| 638 llvm::FunctionType* functype = llvm::FunctionType::get(rettype, pvec, false); | |
| 639 llvm::Function* func = new llvm::Function(functype,llvm::GlobalValue::ExternalLinkage,"main",ir.module); | |
| 640 | |
| 641 llvm::BasicBlock* bb = new llvm::BasicBlock("entry",func); | |
| 642 | |
| 643 // call static ctors | |
| 117 | 644 llvm::Function* fn = LLVM_D_GetRuntimeFunction(ir.module,"_moduleCtor"); |
| 100 | 645 llvm::Instruction* apt = new llvm::CallInst(fn,"",bb); |
| 646 | |
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647 // run unit tests if -unittest is provided |
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648 if (global.params.useUnitTests) { |
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649 fn = LLVM_D_GetRuntimeFunction(ir.module,"_moduleUnitTests"); |
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650 llvm::Instruction* apt = new llvm::CallInst(fn,"",bb); |
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651 } |
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652 |
| 100 | 653 // call user main function |
| 654 const llvm::FunctionType* mainty = ir.mainFunc->getFunctionType(); | |
| 655 llvm::CallInst* call; | |
| 656 if (mainty->getNumParams() > 0) | |
| 657 { | |
| 658 // main with arguments | |
| 659 assert(mainty->getNumParams() == 1); | |
| 660 std::vector<llvm::Value*> args; | |
| 661 llvm::Function* mfn = LLVM_D_GetRuntimeFunction(ir.module,"_d_main_args"); | |
| 662 | |
| 663 llvm::Function::arg_iterator argi = func->arg_begin(); | |
| 664 args.push_back(argi++); | |
| 665 args.push_back(argi++); | |
| 666 | |
| 667 const llvm::Type* at = mainty->getParamType(0)->getContainedType(0); | |
| 668 llvm::Value* arr = new llvm::AllocaInst(at->getContainedType(1)->getContainedType(0), func->arg_begin(), "argstorage", apt); | |
| 669 llvm::Value* a = new llvm::AllocaInst(at, "argarray", apt); | |
| 670 llvm::Value* ptr = DtoGEPi(a,0,0,"tmp",bb); | |
| 671 llvm::Value* v = args[0]; | |
| 672 if (v->getType() != DtoSize_t()) | |
| 673 v = new llvm::ZExtInst(v, DtoSize_t(), "tmp", bb); | |
| 674 new llvm::StoreInst(v,ptr,bb); | |
| 675 ptr = DtoGEPi(a,0,1,"tmp",bb); | |
| 676 new llvm::StoreInst(arr,ptr,bb); | |
| 677 args.push_back(a); | |
| 678 new llvm::CallInst(mfn, args.begin(), args.end(), "", bb); | |
| 679 call = new llvm::CallInst(ir.mainFunc,a,"ret",bb); | |
| 680 } | |
| 681 else | |
| 682 { | |
| 683 // main with no arguments | |
| 684 call = new llvm::CallInst(ir.mainFunc,"ret",bb); | |
| 685 } | |
| 686 call->setCallingConv(ir.mainFunc->getCallingConv()); | |
| 687 | |
| 688 // call static dtors | |
| 117 | 689 fn = LLVM_D_GetRuntimeFunction(ir.module,"_moduleDtor"); |
| 100 | 690 new llvm::CallInst(fn,"",bb); |
| 691 | |
| 692 // return | |
| 693 new llvm::ReturnInst(call,bb); | |
| 694 } | |
| 695 | |
| 696 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 117 | 697 |
| 698 const llvm::FunctionType* DtoBaseFunctionType(FuncDeclaration* fdecl) | |
| 699 { | |
| 700 Dsymbol* parent = fdecl->toParent(); | |
| 701 ClassDeclaration* cd = parent->isClassDeclaration(); | |
| 702 assert(cd); | |
| 703 | |
| 704 FuncDeclaration* f = fdecl; | |
| 705 | |
| 706 while (cd) | |
| 707 { | |
| 708 ClassDeclaration* base = cd->baseClass; | |
| 709 if (!base) | |
| 710 break; | |
| 711 FuncDeclaration* f2 = base->findFunc(fdecl->ident, (TypeFunction*)fdecl->type); | |
| 712 if (f2) { | |
| 713 f = f2; | |
| 714 cd = base; | |
| 715 } | |
| 716 else | |
| 717 break; | |
| 718 } | |
| 719 | |
| 720 DtoResolveDsymbol(f); | |
| 721 return llvm::cast<llvm::FunctionType>(DtoType(f->type)); | |
| 722 } | |
| 723 | |
| 724 ////////////////////////////////////////////////////////////////////////////////////////// |