Mercurial > projects > ldc
annotate gen/functions.cpp @ 213:7816aafeea3c trunk
[svn r229] Updated the object.d implementation to the latest Tango.
Fixed a bunch of the built-in typeinfos for arrays, they did not inherit TypeInfo_Array.
Applied patch to tango/text/convert/Layout.d by fvbommel, closes #47 .
Cleaned up some type code.
Replaced uses of llvm::Type with LLType (a typedef), same for Value and Constant.
Fixed a few cases where typeinfo for user structs could be emitted multiple times, seems to still be some cases of this :/
| author | lindquist |
|---|---|
| date | Fri, 30 May 2008 19:32:04 +0200 |
| parents | 9d44ec83acd1 |
| children | a58d8f4b84df |
| 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" | |
| 131 | 19 #include "gen/dvalue.h" |
| 100 | 20 |
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21 const llvm::FunctionType* DtoFunctionType(Type* type, const LLType* thistype, bool ismain) |
| 100 | 22 { |
| 23 TypeFunction* f = (TypeFunction*)type; | |
| 24 assert(f != 0); | |
| 25 | |
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26 if (type->ir.type != NULL) { |
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27 return llvm::cast<llvm::FunctionType>(type->ir.type->get()); |
| 100 | 28 } |
| 29 | |
| 30 bool typesafeVararg = false; | |
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31 bool arrayVararg = false; |
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32 if (f->linkage == LINKd) |
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33 { |
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34 if (f->varargs == 1) |
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35 typesafeVararg = true; |
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36 else if (f->varargs == 2) |
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37 arrayVararg = true; |
| 100 | 38 } |
| 39 | |
| 40 // return value type | |
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41 const LLType* rettype; |
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42 const LLType* actualRettype; |
| 100 | 43 Type* rt = f->next; |
| 44 bool retinptr = false; | |
| 45 bool usesthis = false; | |
| 46 | |
| 47 if (ismain) { | |
| 48 rettype = llvm::Type::Int32Ty; | |
| 49 actualRettype = rettype; | |
| 50 } | |
| 51 else { | |
| 52 assert(rt); | |
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53 Type* rtfin = DtoDType(rt); |
| 100 | 54 if (DtoIsPassedByRef(rt)) { |
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55 rettype = getPtrToType(DtoType(rt)); |
| 100 | 56 actualRettype = llvm::Type::VoidTy; |
| 57 f->llvmRetInPtr = retinptr = true; | |
| 58 } | |
| 59 else { | |
| 60 rettype = DtoType(rt); | |
| 61 actualRettype = rettype; | |
| 62 } | |
| 63 } | |
| 64 | |
| 65 // parameter types | |
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66 std::vector<const LLType*> paramvec; |
| 100 | 67 |
| 68 if (retinptr) { | |
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69 //Logger::cout() << "returning through pointer parameter: " << *rettype << '\n'; |
| 100 | 70 paramvec.push_back(rettype); |
| 71 } | |
| 72 | |
| 73 if (thistype) { | |
| 74 paramvec.push_back(thistype); | |
| 75 usesthis = true; | |
| 76 } | |
| 77 | |
| 78 if (typesafeVararg) { | |
| 79 ClassDeclaration* ti = Type::typeinfo; | |
| 80 ti->toObjFile(); | |
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81 DtoForceConstInitDsymbol(ti); |
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82 assert(ti->ir.irStruct->constInit); |
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83 std::vector<const LLType*> types; |
| 100 | 84 types.push_back(DtoSize_t()); |
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85 types.push_back(getPtrToType(getPtrToType(ti->ir.irStruct->constInit->getType()))); |
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86 const LLType* t1 = llvm::StructType::get(types); |
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87 paramvec.push_back(getPtrToType(t1)); |
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88 paramvec.push_back(getPtrToType(llvm::Type::Int8Ty)); |
| 100 | 89 } |
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90 else if (arrayVararg) |
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91 { |
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92 // do nothing? |
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93 } |
| 100 | 94 |
| 95 size_t n = Argument::dim(f->parameters); | |
| 96 | |
| 97 for (int i=0; i < n; ++i) { | |
| 98 Argument* arg = Argument::getNth(f->parameters, i); | |
| 99 // ensure scalar | |
| 100 Type* argT = DtoDType(arg->type); | |
| 101 assert(argT); | |
| 102 | |
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103 const LLType* at = DtoType(argT); |
| 100 | 104 if (isaStruct(at)) { |
| 105 Logger::println("struct param"); | |
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106 paramvec.push_back(getPtrToType(at)); |
| 100 | 107 } |
| 108 else if (isaArray(at)) { | |
| 109 Logger::println("sarray param"); | |
| 110 assert(argT->ty == Tsarray); | |
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111 //paramvec.push_back(getPtrToType(at->getContainedType(0))); |
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112 paramvec.push_back(getPtrToType(at)); |
| 100 | 113 } |
| 114 else if (llvm::isa<llvm::OpaqueType>(at)) { | |
| 115 Logger::println("opaque param"); | |
| 116 assert(argT->ty == Tstruct || argT->ty == Tclass); | |
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117 paramvec.push_back(getPtrToType(at)); |
| 100 | 118 } |
| 119 else { | |
| 131 | 120 if ((arg->storageClass & STCref) || (arg->storageClass & STCout)) { |
| 121 Logger::println("by ref param"); | |
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122 at = getPtrToType(at); |
| 100 | 123 } |
| 124 else { | |
| 125 Logger::println("in param"); | |
| 126 } | |
| 127 paramvec.push_back(at); | |
| 128 } | |
| 129 } | |
| 130 | |
| 131 // construct function type | |
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132 bool isvararg = !(typesafeVararg || arrayVararg) && f->varargs; |
| 100 | 133 llvm::FunctionType* functype = llvm::FunctionType::get(actualRettype, paramvec, isvararg); |
| 134 | |
| 135 f->llvmRetInPtr = retinptr; | |
| 136 f->llvmUsesThis = usesthis; | |
| 137 | |
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138 //if (!f->ir.type) |
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139 f->ir.type = new llvm::PATypeHolder(functype); |
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140 //else |
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141 //assert(functype == f->ir.type->get()); |
| 100 | 142 |
| 143 return functype; | |
| 144 } | |
| 145 | |
| 146 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 147 | |
| 148 static const llvm::FunctionType* DtoVaFunctionType(FuncDeclaration* fdecl) | |
| 149 { | |
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150 // type has already been resolved |
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151 if (fdecl->type->ir.type != 0) { |
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152 return llvm::cast<llvm::FunctionType>(fdecl->type->ir.type->get()); |
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153 } |
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154 |
| 100 | 155 TypeFunction* f = (TypeFunction*)fdecl->type; |
| 156 assert(f != 0); | |
| 157 | |
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158 const llvm::PointerType* i8pty = getPtrToType(llvm::Type::Int8Ty); |
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159 std::vector<const LLType*> args; |
| 100 | 160 |
| 161 if (fdecl->llvmInternal == LLVMva_start) { | |
| 162 args.push_back(i8pty); | |
| 163 } | |
| 164 else if (fdecl->llvmInternal == LLVMva_intrinsic) { | |
| 165 size_t n = Argument::dim(f->parameters); | |
| 166 for (size_t i=0; i<n; ++i) { | |
| 167 args.push_back(i8pty); | |
| 168 } | |
| 169 } | |
| 170 else | |
| 171 assert(0); | |
| 172 | |
| 173 const llvm::FunctionType* fty = llvm::FunctionType::get(llvm::Type::VoidTy, args, false); | |
| 174 | |
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175 f->ir.type = new llvm::PATypeHolder(fty); |
| 100 | 176 |
| 177 return fty; | |
| 178 } | |
| 179 | |
| 180 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 181 | |
| 182 const llvm::FunctionType* DtoFunctionType(FuncDeclaration* fdecl) | |
| 183 { | |
| 184 if ((fdecl->llvmInternal == LLVMva_start) || (fdecl->llvmInternal == LLVMva_intrinsic)) { | |
| 185 return DtoVaFunctionType(fdecl); | |
| 186 } | |
| 187 | |
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188 // unittest has null type, just build it manually |
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189 /*if (fdecl->isUnitTestDeclaration()) { |
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190 std::vector<const LLType*> args; |
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191 return llvm::FunctionType::get(llvm::Type::VoidTy, args, false); |
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192 }*/ |
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193 |
| 100 | 194 // type has already been resolved |
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195 if (fdecl->type->ir.type != 0) { |
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196 return llvm::cast<llvm::FunctionType>(fdecl->type->ir.type->get()); |
| 100 | 197 } |
| 198 | |
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199 const LLType* thisty = NULL; |
| 100 | 200 if (fdecl->needThis()) { |
| 132 | 201 if (AggregateDeclaration* ad = fdecl->isMember2()) { |
| 202 Logger::println("isMember = this is: %s", ad->type->toChars()); | |
| 100 | 203 thisty = DtoType(ad->type); |
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204 //Logger::cout() << "this llvm type: " << *thisty << '\n'; |
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205 if (isaStruct(thisty) || (!gIR->structs.empty() && thisty == gIR->topstruct()->recty.get())) |
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206 thisty = getPtrToType(thisty); |
| 100 | 207 } |
| 132 | 208 else { |
| 209 Logger::println("chars: %s type: %s kind: %s", fdecl->toChars(), fdecl->type->toChars(), fdecl->kind()); | |
| 210 assert(0); | |
| 211 } | |
| 100 | 212 } |
| 213 else if (fdecl->isNested()) { | |
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214 thisty = getPtrToType(llvm::Type::Int8Ty); |
| 100 | 215 } |
| 216 | |
| 217 const llvm::FunctionType* functype = DtoFunctionType(fdecl->type, thisty, fdecl->isMain()); | |
| 218 | |
| 219 return functype; | |
| 220 } | |
| 221 | |
| 222 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 223 | |
| 224 static llvm::Function* DtoDeclareVaFunction(FuncDeclaration* fdecl) | |
| 225 { | |
| 226 TypeFunction* f = (TypeFunction*)DtoDType(fdecl->type); | |
| 227 const llvm::FunctionType* fty = DtoVaFunctionType(fdecl); | |
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228 LLConstant* fn = 0; |
| 100 | 229 |
| 230 if (fdecl->llvmInternal == LLVMva_start) { | |
| 231 fn = gIR->module->getOrInsertFunction("llvm.va_start", fty); | |
| 232 assert(fn); | |
| 233 } | |
| 234 else if (fdecl->llvmInternal == LLVMva_intrinsic) { | |
| 235 fn = gIR->module->getOrInsertFunction(fdecl->llvmInternal1, fty); | |
| 236 assert(fn); | |
| 237 } | |
| 238 else | |
| 239 assert(0); | |
| 240 | |
| 241 llvm::Function* func = llvm::dyn_cast<llvm::Function>(fn); | |
| 242 assert(func); | |
| 243 assert(func->isIntrinsic()); | |
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244 fdecl->ir.irFunc->func = func; |
| 100 | 245 return func; |
| 246 } | |
| 247 | |
| 248 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 249 | |
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250 void DtoResolveFunction(FuncDeclaration* fdecl) |
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251 { |
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252 if (!global.params.useUnitTests && fdecl->isUnitTestDeclaration()) { |
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253 return; // ignore declaration completely |
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254 } |
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255 |
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256 // is imported and we don't have access? |
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257 if (fdecl->getModule() != gIR->dmodule) |
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258 { |
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259 if (fdecl->prot() == PROTprivate) |
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260 return; |
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261 } |
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262 |
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263 if (fdecl->ir.resolved) return; |
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264 fdecl->ir.resolved = true; |
|
102
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265 |
| 132 | 266 Logger::println("DtoResolveFunction(%s): %s", fdecl->toPrettyChars(), fdecl->loc.toChars()); |
|
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267 LOG_SCOPE; |
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268 |
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269 if (fdecl->runTimeHack) { |
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270 gIR->declareList.push_back(fdecl); |
| 127 | 271 TypeFunction* tf = (TypeFunction*)fdecl->type; |
| 272 tf->llvmRetInPtr = DtoIsPassedByRef(tf->next); | |
|
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273 return; |
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274 } |
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275 |
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276 if (fdecl->parent) |
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277 if (TemplateInstance* tinst = fdecl->parent->isTemplateInstance()) |
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278 { |
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279 TemplateDeclaration* tempdecl = tinst->tempdecl; |
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280 if (tempdecl->llvmInternal == LLVMva_arg) |
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281 { |
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282 Logger::println("magic va_arg found"); |
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283 fdecl->llvmInternal = LLVMva_arg; |
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284 fdecl->ir.declared = true; |
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285 fdecl->ir.initialized = true; |
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286 fdecl->ir.defined = true; |
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287 return; // this gets mapped to an instruction so a declaration makes no sence |
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288 } |
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289 else if (tempdecl->llvmInternal == LLVMva_start) |
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290 { |
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291 Logger::println("magic va_start found"); |
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292 fdecl->llvmInternal = LLVMva_start; |
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293 } |
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294 } |
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295 |
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296 DtoFunctionType(fdecl); |
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297 |
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298 // queue declaration |
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299 if (!fdecl->isAbstract()) |
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300 gIR->declareList.push_back(fdecl); |
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301 } |
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302 |
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303 ////////////////////////////////////////////////////////////////////////////////////////// |
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304 |
| 100 | 305 void DtoDeclareFunction(FuncDeclaration* fdecl) |
| 306 { | |
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307 if (fdecl->ir.declared) return; |
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308 fdecl->ir.declared = true; |
|
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309 |
| 132 | 310 Logger::println("DtoDeclareFunction(%s): %s", fdecl->toPrettyChars(), fdecl->loc.toChars()); |
| 100 | 311 LOG_SCOPE; |
| 312 | |
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313 assert(!fdecl->isAbstract()); |
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314 |
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315 // intrinsic sanity check |
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316 if (fdecl->llvmInternal == LLVMintrinsic && fdecl->fbody) { |
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317 error(fdecl->loc, "intrinsics cannot have function bodies"); |
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318 fatal(); |
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319 } |
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320 |
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321 if (fdecl->runTimeHack) { |
| 100 | 322 Logger::println("runtime hack func chars: %s", fdecl->toChars()); |
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323 if (!fdecl->ir.irFunc) { |
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324 fdecl->ir.irFunc = new IrFunction(fdecl); |
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325 fdecl->ir.irFunc->func = LLVM_D_GetRuntimeFunction(gIR->module, fdecl->toChars()); |
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326 } |
| 100 | 327 return; |
| 328 } | |
| 329 | |
| 330 bool declareOnly = false; | |
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331 bool templInst = fdecl->parent && DtoIsTemplateInstance(fdecl->parent); |
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332 if (!templInst && fdecl->getModule() != gIR->dmodule) |
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333 { |
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334 Logger::println("not template instance, and not in this module. declare only!"); |
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335 Logger::println("current module: %s", gIR->dmodule->ident->toChars()); |
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336 Logger::println("func module: %s", fdecl->getModule()->ident->toChars()); |
|
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337 declareOnly = true; |
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338 } |
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339 else if (fdecl->llvmInternal == LLVMva_start) |
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340 declareOnly = true; |
| 100 | 341 |
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342 if (!fdecl->ir.irFunc) { |
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343 fdecl->ir.irFunc = new IrFunction(fdecl); |
| 100 | 344 } |
| 345 | |
| 346 // mangled name | |
| 347 char* mangled_name; | |
| 348 if (fdecl->llvmInternal == LLVMintrinsic) | |
| 349 mangled_name = fdecl->llvmInternal1; | |
| 350 else | |
| 351 mangled_name = fdecl->mangle(); | |
| 352 | |
| 353 llvm::Function* vafunc = 0; | |
| 354 if ((fdecl->llvmInternal == LLVMva_start) || (fdecl->llvmInternal == LLVMva_intrinsic)) { | |
| 355 vafunc = DtoDeclareVaFunction(fdecl); | |
| 356 } | |
| 357 | |
| 358 Type* t = DtoDType(fdecl->type); | |
| 359 TypeFunction* f = (TypeFunction*)t; | |
| 360 | |
| 361 // construct function | |
| 362 const llvm::FunctionType* functype = DtoFunctionType(fdecl); | |
| 363 llvm::Function* func = vafunc ? vafunc : gIR->module->getFunction(mangled_name); | |
| 364 if (!func) | |
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365 func = llvm::Function::Create(functype, DtoLinkage(fdecl), mangled_name, gIR->module); |
| 100 | 366 else |
| 367 assert(func->getFunctionType() == functype); | |
| 368 | |
| 369 // add func to IRFunc | |
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370 fdecl->ir.irFunc->func = func; |
| 100 | 371 |
| 372 // calling convention | |
| 373 if (!vafunc && fdecl->llvmInternal != LLVMintrinsic) | |
| 374 func->setCallingConv(DtoCallingConv(f->linkage)); | |
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375 else // fall back to C, it should be the right thing to do |
| 132 | 376 func->setCallingConv(llvm::CallingConv::C); |
| 377 | |
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378 fdecl->ir.irFunc->func = func; |
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379 assert(llvm::isa<llvm::FunctionType>(f->ir.type->get())); |
| 100 | 380 |
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381 // main |
| 100 | 382 if (fdecl->isMain()) { |
| 383 gIR->mainFunc = func; | |
| 384 } | |
| 385 | |
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386 // static ctor |
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387 if (fdecl->isStaticCtorDeclaration() && fdecl->getModule() == gIR->dmodule) { |
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388 gIR->ctors.push_back(fdecl); |
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389 } |
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390 // static dtor |
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391 else if (fdecl->isStaticDtorDeclaration() && fdecl->getModule() == gIR->dmodule) { |
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392 gIR->dtors.push_back(fdecl); |
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393 } |
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394 |
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395 // we never reference parameters of function prototypes |
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396 if (!declareOnly) |
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397 { |
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398 // name parameters |
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399 llvm::Function::arg_iterator iarg = func->arg_begin(); |
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400 int k = 0; |
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401 if (f->llvmRetInPtr) { |
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402 iarg->setName("retval"); |
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403 fdecl->ir.irFunc->retArg = iarg; |
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404 ++iarg; |
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405 } |
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406 if (f->llvmUsesThis) { |
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407 iarg->setName("this"); |
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408 fdecl->ir.irFunc->thisVar = iarg; |
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409 assert(fdecl->ir.irFunc->thisVar); |
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410 ++iarg; |
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411 } |
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412 |
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413 if (f->linkage == LINKd && f->varargs == 1) { |
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414 iarg->setName("_arguments"); |
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415 fdecl->ir.irFunc->_arguments = iarg; |
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416 ++iarg; |
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417 iarg->setName("_argptr"); |
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418 fdecl->ir.irFunc->_argptr = iarg; |
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419 ++iarg; |
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420 } |
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421 |
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422 for (; iarg != func->arg_end(); ++iarg) |
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423 { |
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424 if (fdecl->parameters && fdecl->parameters->dim > k) |
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425 { |
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426 Dsymbol* argsym = (Dsymbol*)fdecl->parameters->data[k++]; |
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427 VarDeclaration* argvd = argsym->isVarDeclaration(); |
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428 assert(argvd); |
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429 assert(!argvd->ir.irLocal); |
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430 argvd->ir.irLocal = new IrLocal(argvd); |
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431 argvd->ir.irLocal->value = iarg; |
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432 iarg->setName(argvd->ident->toChars()); |
| 100 | 433 } |
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434 else |
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435 { |
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436 iarg->setName("unnamed"); |
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437 } |
| 100 | 438 } |
| 439 } | |
| 440 | |
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441 if (fdecl->isUnitTestDeclaration()) |
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442 gIR->unitTests.push_back(fdecl); |
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443 |
| 100 | 444 if (!declareOnly) |
|
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445 gIR->defineList.push_back(fdecl); |
|
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446 else |
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447 assert(func->getLinkage() != llvm::GlobalValue::InternalLinkage); |
| 100 | 448 |
| 449 Logger::cout() << "func decl: " << *func << '\n'; | |
| 450 } | |
| 451 | |
| 452 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 453 | |
| 454 void DtoDefineFunc(FuncDeclaration* fd) | |
| 455 { | |
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456 if (fd->ir.defined) return; |
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457 fd->ir.defined = true; |
|
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458 |
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459 assert(fd->ir.declared); |
|
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460 |
| 132 | 461 Logger::println("DtoDefineFunc(%s): %s", fd->toPrettyChars(), fd->loc.toChars()); |
|
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462 LOG_SCOPE; |
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463 |
| 100 | 464 // debug info |
| 465 if (global.params.symdebug) { | |
| 466 Module* mo = fd->getModule(); | |
|
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467 fd->ir.irFunc->dwarfSubProg = DtoDwarfSubProgram(fd, DtoDwarfCompileUnit(mo)); |
| 100 | 468 } |
| 469 | |
| 470 Type* t = DtoDType(fd->type); | |
| 471 TypeFunction* f = (TypeFunction*)t; | |
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472 assert(f->ir.type); |
| 100 | 473 |
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474 llvm::Function* func = fd->ir.irFunc->func; |
| 100 | 475 const llvm::FunctionType* functype = func->getFunctionType(); |
| 476 | |
| 477 // only members of the current module or template instances maybe be defined | |
| 478 if (fd->getModule() == gIR->dmodule || DtoIsTemplateInstance(fd->parent)) | |
| 479 { | |
|
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480 fd->ir.DModule = gIR->dmodule; |
| 100 | 481 |
| 482 // function definition | |
| 483 if (fd->fbody != 0) | |
| 484 { | |
| 485 Logger::println("Doing function body for: %s", fd->toChars()); | |
|
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486 assert(fd->ir.irFunc); |
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487 gIR->functions.push_back(fd->ir.irFunc); |
| 100 | 488 |
| 489 if (fd->isMain()) | |
| 490 gIR->emitMain = true; | |
| 491 | |
|
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492 std::string entryname("entry_"); |
|
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493 entryname.append(fd->toPrettyChars()); |
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494 |
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495 llvm::BasicBlock* beginbb = llvm::BasicBlock::Create(entryname,func); |
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496 llvm::BasicBlock* endbb = llvm::BasicBlock::Create("endentry",func); |
| 100 | 497 |
| 498 //assert(gIR->scopes.empty()); | |
| 499 gIR->scopes.push_back(IRScope(beginbb, endbb)); | |
| 500 | |
| 501 // create alloca point | |
|
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502 llvm::Instruction* allocaPoint = new llvm::AllocaInst(llvm::Type::Int32Ty, "alloca point", beginbb); |
|
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503 gIR->func()->allocapoint = allocaPoint; |
| 100 | 504 |
|
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505 // need result variable? (not nested) |
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506 if (fd->vresult && !fd->vresult->nestedref) { |
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507 Logger::println("non-nested vresult value"); |
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508 fd->vresult->ir.irLocal = new IrLocal(fd->vresult); |
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509 fd->vresult->ir.irLocal->value = new llvm::AllocaInst(DtoType(fd->vresult->type),"function_vresult",allocaPoint); |
|
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510 } |
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511 |
| 100 | 512 // give arguments storage |
|
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513 if (fd->parameters) |
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514 { |
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515 size_t n = fd->parameters->dim; |
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516 for (int i=0; i < n; ++i) |
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517 { |
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518 Dsymbol* argsym = (Dsymbol*)fd->parameters->data[i]; |
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519 VarDeclaration* vd = argsym->isVarDeclaration(); |
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520 assert(vd); |
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521 |
|
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522 if (!vd->needsStorage || vd->nestedref || vd->isRef() || vd->isOut() || DtoIsPassedByRef(vd->type)) |
| 100 | 523 continue; |
|
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524 |
|
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525 LLValue* a = vd->ir.irLocal->value; |
| 100 | 526 assert(a); |
| 527 std::string s(a->getName()); | |
| 528 Logger::println("giving argument '%s' storage", s.c_str()); | |
| 529 s.append("_storage"); | |
|
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530 |
|
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531 LLValue* v = new llvm::AllocaInst(a->getType(),s,allocaPoint); |
| 100 | 532 gIR->ir->CreateStore(a,v); |
|
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533 vd->ir.irLocal->value = v; |
| 100 | 534 } |
| 535 } | |
| 536 | |
| 537 // debug info | |
| 538 if (global.params.symdebug) DtoDwarfFuncStart(fd); | |
| 539 | |
|
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540 LLValue* parentNested = NULL; |
| 131 | 541 if (FuncDeclaration* fd2 = fd->toParent2()->isFuncDeclaration()) { |
| 542 if (!fd->isStatic()) // huh? | |
|
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543 parentNested = fd2->ir.irFunc->nestedVar; |
|
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544 } |
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545 |
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546 // need result variable? (nested) |
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547 if (fd->vresult && fd->vresult->nestedref) { |
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548 Logger::println("nested vresult value: %s", fd->vresult->toChars()); |
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549 fd->nestedVars.insert(fd->vresult); |
| 100 | 550 } |
| 551 | |
| 552 // construct nested variables struct | |
|
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553 if (!fd->nestedVars.empty() || parentNested) { |
|
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554 std::vector<const LLType*> nestTypes; |
| 100 | 555 int j = 0; |
| 556 if (parentNested) { | |
| 557 nestTypes.push_back(parentNested->getType()); | |
| 558 j++; | |
| 559 } | |
|
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560 for (std::set<VarDeclaration*>::iterator i=fd->nestedVars.begin(); i!=fd->nestedVars.end(); ++i) { |
| 100 | 561 VarDeclaration* vd = *i; |
|
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562 Logger::println("referenced nested variable %s", vd->toChars()); |
|
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563 if (!vd->ir.irLocal) |
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564 vd->ir.irLocal = new IrLocal(vd); |
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565 vd->ir.irLocal->nestedIndex = j++; |
| 100 | 566 if (vd->isParameter()) { |
|
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567 if (!vd->ir.irLocal->value) { |
|
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568 assert(vd == fd->vthis); |
|
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569 vd->ir.irLocal->value = fd->ir.irFunc->thisVar; |
|
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570 } |
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571 assert(vd->ir.irLocal->value); |
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572 nestTypes.push_back(vd->ir.irLocal->value->getType()); |
| 100 | 573 } |
| 574 else { | |
| 575 nestTypes.push_back(DtoType(vd->type)); | |
| 576 } | |
| 577 } | |
| 578 const llvm::StructType* nestSType = llvm::StructType::get(nestTypes); | |
|
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579 Logger::cout() << "nested var struct has type:" << *nestSType << '\n'; |
|
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580 fd->ir.irFunc->nestedVar = new llvm::AllocaInst(nestSType,"nestedvars",allocaPoint); |
| 100 | 581 if (parentNested) { |
|
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582 assert(fd->ir.irFunc->thisVar); |
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583 LLValue* ptr = gIR->ir->CreateBitCast(fd->ir.irFunc->thisVar, parentNested->getType(), "tmp"); |
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584 gIR->ir->CreateStore(ptr, DtoGEPi(fd->ir.irFunc->nestedVar, 0,0, "tmp")); |
| 100 | 585 } |
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586 for (std::set<VarDeclaration*>::iterator i=fd->nestedVars.begin(); i!=fd->nestedVars.end(); ++i) { |
| 100 | 587 VarDeclaration* vd = *i; |
| 588 if (vd->isParameter()) { | |
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589 assert(vd->ir.irLocal); |
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590 gIR->ir->CreateStore(vd->ir.irLocal->value, DtoGEPi(fd->ir.irFunc->nestedVar, 0, vd->ir.irLocal->nestedIndex, "tmp")); |
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591 vd->ir.irLocal->value = fd->ir.irFunc->nestedVar; |
| 100 | 592 } |
| 593 } | |
| 594 } | |
| 595 | |
| 596 // copy _argptr to a memory location | |
| 597 if (f->linkage == LINKd && f->varargs == 1) | |
| 598 { | |
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599 LLValue* argptrmem = new llvm::AllocaInst(fd->ir.irFunc->_argptr->getType(), "_argptrmem", gIR->topallocapoint()); |
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600 new llvm::StoreInst(fd->ir.irFunc->_argptr, argptrmem, gIR->scopebb()); |
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601 fd->ir.irFunc->_argptr = argptrmem; |
| 100 | 602 } |
| 603 | |
| 604 // output function body | |
| 605 fd->fbody->toIR(gIR); | |
| 606 | |
| 607 // llvm requires all basic blocks to end with a TerminatorInst but DMD does not put a return statement | |
| 608 // in automatically, so we do it here. | |
| 609 if (!fd->isMain()) { | |
| 610 if (!gIR->scopereturned()) { | |
| 611 // pass the previous block into this block | |
| 612 if (global.params.symdebug) DtoDwarfFuncEnd(fd); | |
| 613 if (func->getReturnType() == llvm::Type::VoidTy) { | |
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614 llvm::ReturnInst::Create(gIR->scopebb()); |
| 100 | 615 } |
| 616 else { | |
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617 llvm::ReturnInst::Create(llvm::UndefValue::get(func->getReturnType()), gIR->scopebb()); |
| 100 | 618 } |
| 619 } | |
| 620 } | |
| 621 | |
| 622 // erase alloca point | |
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623 allocaPoint->eraseFromParent(); |
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624 allocaPoint = 0; |
| 100 | 625 gIR->func()->allocapoint = 0; |
| 626 | |
| 627 gIR->scopes.pop_back(); | |
| 628 | |
| 629 // get rid of the endentry block, it's never used | |
| 630 assert(!func->getBasicBlockList().empty()); | |
| 631 func->getBasicBlockList().pop_back(); | |
| 632 | |
| 633 // if the last block is empty now, it must be unreachable or it's a bug somewhere else | |
| 634 // would be nice to figure out how to assert that this is correct | |
| 635 llvm::BasicBlock* lastbb = &func->getBasicBlockList().back(); | |
| 636 if (lastbb->empty()) { | |
| 637 if (lastbb->getNumUses() == 0) | |
| 638 lastbb->eraseFromParent(); | |
| 639 else { | |
| 640 new llvm::UnreachableInst(lastbb); | |
| 641 /*if (func->getReturnType() == llvm::Type::VoidTy) { | |
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642 llvm::ReturnInst::Create(lastbb); |
| 100 | 643 } |
| 644 else { | |
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645 llvm::ReturnInst::Create(llvm::UndefValue::get(func->getReturnType()), lastbb); |
| 100 | 646 }*/ |
| 647 } | |
| 648 } | |
| 649 | |
| 650 gIR->functions.pop_back(); | |
| 651 } | |
| 652 } | |
| 653 } | |
| 654 | |
| 655 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 656 | |
| 657 void DtoMain() | |
| 658 { | |
| 659 // emit main function llvm style | |
| 660 // int main(int argc, char**argv, char**env); | |
| 661 | |
| 662 assert(gIR != 0); | |
| 663 IRState& ir = *gIR; | |
| 664 | |
| 665 assert(ir.emitMain && ir.mainFunc); | |
| 666 | |
| 667 // parameter types | |
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668 std::vector<const LLType*> pvec; |
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669 pvec.push_back((const LLType*)llvm::Type::Int32Ty); |
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670 const LLType* chPtrType = (const LLType*)getPtrToType(llvm::Type::Int8Ty); |
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671 pvec.push_back((const LLType*)getPtrToType(chPtrType)); |
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672 pvec.push_back((const LLType*)getPtrToType(chPtrType)); |
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673 const LLType* rettype = (const LLType*)llvm::Type::Int32Ty; |
| 100 | 674 |
| 675 llvm::FunctionType* functype = llvm::FunctionType::get(rettype, pvec, false); | |
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676 llvm::Function* func = llvm::Function::Create(functype,llvm::GlobalValue::ExternalLinkage,"main",ir.module); |
| 100 | 677 |
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678 llvm::BasicBlock* bb = llvm::BasicBlock::Create("entry",func); |
| 100 | 679 |
| 680 // call static ctors | |
| 117 | 681 llvm::Function* fn = LLVM_D_GetRuntimeFunction(ir.module,"_moduleCtor"); |
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682 llvm::Instruction* apt = llvm::CallInst::Create(fn,"",bb); |
| 100 | 683 |
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684 // run unit tests if -unittest is provided |
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685 if (global.params.useUnitTests) { |
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686 fn = LLVM_D_GetRuntimeFunction(ir.module,"_moduleUnitTests"); |
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687 llvm::Instruction* apt = llvm::CallInst::Create(fn,"",bb); |
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688 } |
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689 |
| 100 | 690 // call user main function |
| 691 const llvm::FunctionType* mainty = ir.mainFunc->getFunctionType(); | |
| 692 llvm::CallInst* call; | |
| 693 if (mainty->getNumParams() > 0) | |
| 694 { | |
| 695 // main with arguments | |
| 696 assert(mainty->getNumParams() == 1); | |
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697 std::vector<LLValue*> args; |
| 100 | 698 llvm::Function* mfn = LLVM_D_GetRuntimeFunction(ir.module,"_d_main_args"); |
| 699 | |
| 700 llvm::Function::arg_iterator argi = func->arg_begin(); | |
| 701 args.push_back(argi++); | |
| 702 args.push_back(argi++); | |
| 703 | |
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704 const LLType* at = mainty->getParamType(0)->getContainedType(0); |
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705 LLValue* arr = new llvm::AllocaInst(at->getContainedType(1)->getContainedType(0), func->arg_begin(), "argstorage", apt); |
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706 LLValue* a = new llvm::AllocaInst(at, "argarray", apt); |
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707 LLValue* ptr = DtoGEPi(a,0,0,"tmp",bb); |
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708 LLValue* v = args[0]; |
| 100 | 709 if (v->getType() != DtoSize_t()) |
| 710 v = new llvm::ZExtInst(v, DtoSize_t(), "tmp", bb); | |
| 711 new llvm::StoreInst(v,ptr,bb); | |
| 712 ptr = DtoGEPi(a,0,1,"tmp",bb); | |
| 713 new llvm::StoreInst(arr,ptr,bb); | |
| 714 args.push_back(a); | |
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715 llvm::CallInst::Create(mfn, args.begin(), args.end(), "", bb); |
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716 call = llvm::CallInst::Create(ir.mainFunc,a,"ret",bb); |
| 100 | 717 } |
| 718 else | |
| 719 { | |
| 720 // main with no arguments | |
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721 call = llvm::CallInst::Create(ir.mainFunc,"ret",bb); |
| 100 | 722 } |
| 723 call->setCallingConv(ir.mainFunc->getCallingConv()); | |
| 724 | |
| 725 // call static dtors | |
| 117 | 726 fn = LLVM_D_GetRuntimeFunction(ir.module,"_moduleDtor"); |
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727 llvm::CallInst::Create(fn,"",bb); |
| 100 | 728 |
| 729 // return | |
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730 llvm::ReturnInst::Create(call,bb); |
| 100 | 731 } |
| 732 | |
| 733 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 117 | 734 |
| 735 const llvm::FunctionType* DtoBaseFunctionType(FuncDeclaration* fdecl) | |
| 736 { | |
| 737 Dsymbol* parent = fdecl->toParent(); | |
| 738 ClassDeclaration* cd = parent->isClassDeclaration(); | |
| 739 assert(cd); | |
| 740 | |
| 741 FuncDeclaration* f = fdecl; | |
| 742 | |
| 743 while (cd) | |
| 744 { | |
| 745 ClassDeclaration* base = cd->baseClass; | |
| 746 if (!base) | |
| 747 break; | |
| 748 FuncDeclaration* f2 = base->findFunc(fdecl->ident, (TypeFunction*)fdecl->type); | |
| 749 if (f2) { | |
| 750 f = f2; | |
| 751 cd = base; | |
| 752 } | |
| 753 else | |
| 754 break; | |
| 755 } | |
| 756 | |
| 757 DtoResolveDsymbol(f); | |
| 758 return llvm::cast<llvm::FunctionType>(DtoType(f->type)); | |
| 759 } | |
| 760 | |
| 761 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 131 | 762 |
| 763 DValue* DtoArgument(Argument* fnarg, Expression* argexp) | |
| 764 { | |
| 765 Logger::println("DtoArgument"); | |
| 766 LOG_SCOPE; | |
| 767 | |
| 768 DValue* arg = argexp->toElem(gIR); | |
| 769 | |
| 770 // ref/out arg | |
| 771 if (fnarg && ((fnarg->storageClass & STCref) || (fnarg->storageClass & STCout))) | |
| 772 { | |
| 773 if (arg->isVar() || arg->isLRValue()) | |
| 774 arg = new DImValue(argexp->type, arg->getLVal(), false); | |
| 775 else | |
| 776 arg = new DImValue(argexp->type, arg->getRVal(), false); | |
| 777 } | |
| 778 // aggregate arg | |
| 779 else if (DtoIsPassedByRef(argexp->type)) | |
| 780 { | |
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781 LLValue* alloc = new llvm::AllocaInst(DtoType(argexp->type), "tmpparam", gIR->topallocapoint()); |
| 131 | 782 DVarValue* vv = new DVarValue(argexp->type, alloc, true); |
| 783 DtoAssign(vv, arg); | |
| 784 arg = vv; | |
| 785 } | |
| 786 // normal arg (basic/value type) | |
| 787 else | |
| 788 { | |
| 789 // nothing to do | |
| 790 } | |
| 791 | |
| 792 return arg; | |
| 793 } | |
| 794 | |
| 795 ////////////////////////////////////////////////////////////////////////////////////////// | |
| 796 | |
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797 void DtoVariadicArgument(Expression* argexp, LLValue* dst) |
| 131 | 798 { |
| 799 Logger::println("DtoVariadicArgument"); | |
| 800 LOG_SCOPE; | |
| 801 DVarValue* vv = new DVarValue(argexp->type, dst, true); | |
| 802 DtoAssign(vv, argexp->toElem(gIR)); | |
| 803 } | |
| 804 | |
| 805 ////////////////////////////////////////////////////////////////////////////////////////// |