Mercurial > projects > ldc
annotate gen/functions.cpp @ 445:cc40db549aea
Changed the handling of variadic intrinsics a bit.
Removed the -fp80 option and made real be 80bit floats on X86, this is what the D spec really says it should be and fixes a bunch of issues.
Changed the handling of parameter attributes to a bit more generalized approach.
Added sext/zext attributes for byte/short/ubyte/ushort parameters, fixes #60 .
Parameter attribs now properly set for intrinsic calls if necessary.
Made the tango.math.Math patch less intrusive.
Fixed/added some mini tests.
author | Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> |
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date | Fri, 01 Aug 2008 17:59:58 +0200 |
parents | 44f08170f4ef |
children | 7a67dedbf933 |
rev | line source |
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100 | 1 #include "gen/llvm.h" |
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2 #include "llvm/Support/CFG.h" |
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3 #include "llvm/Intrinsics.h" |
100 | 4 |
5 #include "mtype.h" | |
6 #include "aggregate.h" | |
7 #include "init.h" | |
8 #include "declaration.h" | |
9 #include "template.h" | |
10 #include "module.h" | |
11 #include "statement.h" | |
12 | |
13 #include "gen/irstate.h" | |
14 #include "gen/tollvm.h" | |
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15 #include "gen/llvmhelpers.h" |
100 | 16 #include "gen/runtime.h" |
17 #include "gen/arrays.h" | |
18 #include "gen/logger.h" | |
19 #include "gen/functions.h" | |
20 #include "gen/todebug.h" | |
21 #include "gen/classes.h" | |
131 | 22 #include "gen/dvalue.h" |
100 | 23 |
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24 const llvm::FunctionType* DtoFunctionType(Type* type, const LLType* thistype, bool ismain) |
100 | 25 { |
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26 assert(type->ty == Tfunction); |
100 | 27 TypeFunction* f = (TypeFunction*)type; |
28 | |
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29 if (type->ir.type != NULL) { |
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30 return llvm::cast<llvm::FunctionType>(type->ir.type->get()); |
100 | 31 } |
32 | |
33 bool typesafeVararg = false; | |
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34 bool arrayVararg = false; |
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35 if (f->linkage == LINKd) |
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36 { |
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37 if (f->varargs == 1) |
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38 typesafeVararg = true; |
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39 else if (f->varargs == 2) |
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40 arrayVararg = true; |
100 | 41 } |
42 | |
43 // return value type | |
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44 const LLType* rettype; |
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45 const LLType* actualRettype; |
100 | 46 Type* rt = f->next; |
47 bool retinptr = false; | |
48 bool usesthis = false; | |
49 | |
234
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50 // parameter types |
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51 std::vector<const LLType*> paramvec; |
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52 |
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53 if (ismain) |
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54 { |
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55 rettype = LLType::Int32Ty; |
100 | 56 actualRettype = rettype; |
234
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57 if (Argument::dim(f->parameters) == 0) |
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58 { |
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59 const LLType* arrTy = DtoArrayType(LLType::Int8Ty); |
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60 const LLType* arrArrTy = DtoArrayType(arrTy); |
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61 paramvec.push_back(getPtrToType(arrArrTy)); |
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62 } |
100 | 63 } |
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64 else{ |
100 | 65 assert(rt); |
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66 if (DtoIsReturnedInArg(rt)) { |
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67 rettype = getPtrToType(DtoType(rt)); |
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68 actualRettype = LLType::VoidTy; |
100 | 69 f->llvmRetInPtr = retinptr = true; |
70 } | |
71 else { | |
72 rettype = DtoType(rt); | |
73 actualRettype = rettype; | |
74 } | |
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75 |
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76 if (unsigned ea = DtoShouldExtend(rt)) |
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77 { |
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78 f->llvmRetAttrs |= ea; |
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79 } |
100 | 80 } |
81 | |
82 if (retinptr) { | |
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83 //Logger::cout() << "returning through pointer parameter: " << *rettype << '\n'; |
100 | 84 paramvec.push_back(rettype); |
85 } | |
86 | |
87 if (thistype) { | |
88 paramvec.push_back(thistype); | |
89 usesthis = true; | |
90 } | |
91 | |
92 if (typesafeVararg) { | |
93 ClassDeclaration* ti = Type::typeinfo; | |
336 | 94 ti->toObjFile(0); // TODO: multiobj |
102
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95 DtoForceConstInitDsymbol(ti); |
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96 assert(ti->ir.irStruct->constInit); |
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97 std::vector<const LLType*> types; |
100 | 98 types.push_back(DtoSize_t()); |
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99 types.push_back(getPtrToType(getPtrToType(ti->ir.irStruct->constInit->getType()))); |
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100 const LLType* t1 = llvm::StructType::get(types); |
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101 paramvec.push_back(getPtrToType(t1)); |
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102 paramvec.push_back(getPtrToType(LLType::Int8Ty)); |
100 | 103 } |
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104 else if (arrayVararg) |
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105 { |
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106 // do nothing? |
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107 } |
100 | 108 |
109 size_t n = Argument::dim(f->parameters); | |
110 | |
111 for (int i=0; i < n; ++i) { | |
112 Argument* arg = Argument::getNth(f->parameters, i); | |
113 // ensure scalar | |
114 Type* argT = DtoDType(arg->type); | |
115 assert(argT); | |
116 | |
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117 bool refOrOut = ((arg->storageClass & STCref) || (arg->storageClass & STCout)); |
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118 |
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119 const LLType* at = DtoType(argT); |
100 | 120 if (isaStruct(at)) { |
121 Logger::println("struct param"); | |
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122 paramvec.push_back(getPtrToType(at)); |
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123 if (!refOrOut) |
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124 arg->llvmAttrs |= llvm::ParamAttr::ByVal; |
100 | 125 } |
126 else if (isaArray(at)) { | |
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127 // static array are passed by reference |
100 | 128 Logger::println("sarray param"); |
129 assert(argT->ty == Tsarray); | |
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130 paramvec.push_back(getPtrToType(at)); |
100 | 131 } |
132 else if (llvm::isa<llvm::OpaqueType>(at)) { | |
133 Logger::println("opaque param"); | |
134 assert(argT->ty == Tstruct || argT->ty == Tclass); | |
133
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135 paramvec.push_back(getPtrToType(at)); |
100 | 136 } |
137 else { | |
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138 if (refOrOut) { |
131 | 139 Logger::println("by ref param"); |
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140 at = getPtrToType(at); |
100 | 141 } |
142 else { | |
143 Logger::println("in param"); | |
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144 if (unsigned ea = DtoShouldExtend(argT)) |
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145 { |
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146 arg->llvmAttrs |= ea; |
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147 } |
100 | 148 } |
149 paramvec.push_back(at); | |
150 } | |
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151 |
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152 // handle lazy args |
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153 if (arg->storageClass & STClazy) |
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154 { |
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155 Logger::cout() << "for lazy got: " << *paramvec.back() << '\n'; |
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156 TypeFunction *ltf = new TypeFunction(NULL, arg->type, 0, LINKd); |
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157 TypeDelegate *ltd = new TypeDelegate(ltf); |
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158 at = getPtrToType(DtoType(ltd)); |
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159 Logger::cout() << "lazy updated to: " << *at << '\n'; |
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160 paramvec.back() = at; |
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161 } |
100 | 162 } |
163 | |
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164 //warning("set %d byval args for type: %s", nbyval, f->toChars()); |
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165 |
100 | 166 // construct function type |
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167 bool isvararg = !(typesafeVararg || arrayVararg) && f->varargs; |
100 | 168 llvm::FunctionType* functype = llvm::FunctionType::get(actualRettype, paramvec, isvararg); |
169 | |
170 f->llvmRetInPtr = retinptr; | |
171 f->llvmUsesThis = usesthis; | |
172 | |
217
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173 f->ir.type = new llvm::PATypeHolder(functype); |
100 | 174 |
175 return functype; | |
176 } | |
177 | |
178 ////////////////////////////////////////////////////////////////////////////////////////// | |
179 | |
180 static const llvm::FunctionType* DtoVaFunctionType(FuncDeclaration* fdecl) | |
181 { | |
102
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182 // type has already been resolved |
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183 if (fdecl->type->ir.type != 0) { |
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184 return llvm::cast<llvm::FunctionType>(fdecl->type->ir.type->get()); |
102
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185 } |
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186 |
100 | 187 TypeFunction* f = (TypeFunction*)fdecl->type; |
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188 const llvm::FunctionType* fty = 0; |
100 | 189 |
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190 if (fdecl->llvmInternal == LLVMva_start) |
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191 fty = GET_INTRINSIC_DECL(vastart)->getFunctionType(); |
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192 else if (fdecl->llvmInternal == LLVMva_copy) |
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193 fty = GET_INTRINSIC_DECL(vacopy)->getFunctionType(); |
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194 else if (fdecl->llvmInternal == LLVMva_end) |
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195 fty = GET_INTRINSIC_DECL(vaend)->getFunctionType(); |
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196 assert(fty); |
100 | 197 |
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198 f->ir.type = new llvm::PATypeHolder(fty); |
100 | 199 return fty; |
200 } | |
201 | |
202 ////////////////////////////////////////////////////////////////////////////////////////// | |
203 | |
204 const llvm::FunctionType* DtoFunctionType(FuncDeclaration* fdecl) | |
205 { | |
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206 // handle for C vararg intrinsics |
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207 if (fdecl->isVaIntrinsic()) |
100 | 208 return DtoVaFunctionType(fdecl); |
209 | |
210 // type has already been resolved | |
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211 if (fdecl->type->ir.type != 0) |
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212 return llvm::cast<llvm::FunctionType>(fdecl->type->ir.type->get()); |
100 | 213 |
213
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214 const LLType* thisty = NULL; |
100 | 215 if (fdecl->needThis()) { |
132 | 216 if (AggregateDeclaration* ad = fdecl->isMember2()) { |
217 Logger::println("isMember = this is: %s", ad->type->toChars()); | |
100 | 218 thisty = DtoType(ad->type); |
113
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219 //Logger::cout() << "this llvm type: " << *thisty << '\n'; |
102
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220 if (isaStruct(thisty) || (!gIR->structs.empty() && thisty == gIR->topstruct()->recty.get())) |
133
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221 thisty = getPtrToType(thisty); |
100 | 222 } |
132 | 223 else { |
224 Logger::println("chars: %s type: %s kind: %s", fdecl->toChars(), fdecl->type->toChars(), fdecl->kind()); | |
225 assert(0); | |
226 } | |
100 | 227 } |
228 else if (fdecl->isNested()) { | |
244
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229 thisty = getPtrToType(LLType::Int8Ty); |
100 | 230 } |
231 | |
232 const llvm::FunctionType* functype = DtoFunctionType(fdecl->type, thisty, fdecl->isMain()); | |
233 | |
234 return functype; | |
235 } | |
236 | |
237 ////////////////////////////////////////////////////////////////////////////////////////// | |
238 | |
239 static llvm::Function* DtoDeclareVaFunction(FuncDeclaration* fdecl) | |
240 { | |
241 TypeFunction* f = (TypeFunction*)DtoDType(fdecl->type); | |
242 const llvm::FunctionType* fty = DtoVaFunctionType(fdecl); | |
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243 llvm::Function* func = 0; |
100 | 244 |
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245 if (fdecl->llvmInternal == LLVMva_start) |
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246 func = GET_INTRINSIC_DECL(vastart); |
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247 else if (fdecl->llvmInternal == LLVMva_copy) |
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248 func = GET_INTRINSIC_DECL(vacopy); |
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249 else if (fdecl->llvmInternal == LLVMva_end) |
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250 func = GET_INTRINSIC_DECL(vaend); |
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251 assert(func); |
100 | 252 |
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253 fdecl->ir.irFunc->func = func; |
100 | 254 return func; |
255 } | |
256 | |
257 ////////////////////////////////////////////////////////////////////////////////////////// | |
258 | |
102
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259 void DtoResolveFunction(FuncDeclaration* fdecl) |
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260 { |
121
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261 if (!global.params.useUnitTests && fdecl->isUnitTestDeclaration()) { |
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262 return; // ignore declaration completely |
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263 } |
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264 |
133
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265 // is imported and we don't have access? |
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266 if (fdecl->getModule() != gIR->dmodule) |
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267 { |
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268 if (fdecl->prot() == PROTprivate) |
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269 return; |
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270 } |
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271 |
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272 if (fdecl->ir.resolved) return; |
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273 fdecl->ir.resolved = true; |
102
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274 |
132 | 275 Logger::println("DtoResolveFunction(%s): %s", fdecl->toPrettyChars(), fdecl->loc.toChars()); |
102
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276 LOG_SCOPE; |
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277 |
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278 if (fdecl->parent) |
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279 if (TemplateInstance* tinst = fdecl->parent->isTemplateInstance()) |
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280 { |
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281 TemplateDeclaration* tempdecl = tinst->tempdecl; |
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282 if (tempdecl->llvmInternal == LLVMva_arg) |
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283 { |
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284 Logger::println("magic va_arg found"); |
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285 fdecl->llvmInternal = LLVMva_arg; |
173
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286 fdecl->ir.declared = true; |
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287 fdecl->ir.initialized = true; |
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288 fdecl->ir.defined = true; |
102
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289 return; // this gets mapped to an instruction so a declaration makes no sence |
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290 } |
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291 else if (tempdecl->llvmInternal == LLVMva_start) |
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292 { |
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293 Logger::println("magic va_start found"); |
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294 fdecl->llvmInternal = LLVMva_start; |
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295 } |
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296 } |
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297 |
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298 DtoFunctionType(fdecl); |
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299 |
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300 // queue declaration |
113
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301 if (!fdecl->isAbstract()) |
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302 gIR->declareList.push_back(fdecl); |
102
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303 } |
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304 |
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305 ////////////////////////////////////////////////////////////////////////////////////////// |
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306 |
240
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307 static void set_param_attrs(TypeFunction* f, llvm::Function* func, FuncDeclaration* fdecl) |
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308 { |
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309 assert(f->parameters); |
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310 |
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311 int llidx = 1; |
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312 if (f->llvmRetInPtr) ++llidx; |
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313 if (f->llvmUsesThis) ++llidx; |
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314 if (f->linkage == LINKd && f->varargs == 1) |
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315 llidx += 2; |
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316 |
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317 int funcNumArgs = func->getArgumentList().size(); |
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318 std::vector<llvm::ParamAttrsWithIndex> attrs; |
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319 int k = 0; |
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320 |
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321 llvm::ParamAttrsWithIndex PAWI; |
240
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322 |
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323 // set zext/sext attr on return value if necessary |
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324 if (f->next->isintegral() && f->next->size() < PTRSIZE) |
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325 { |
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326 PAWI.Index = 0; |
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327 if (f->next->isunsigned()) |
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328 PAWI.Attrs = llvm::ParamAttr::ZExt; |
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329 else |
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330 PAWI.Attrs = llvm::ParamAttr::SExt; |
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331 attrs.push_back(PAWI); |
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332 } |
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333 |
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334 // set byval attrs on implicit main arg |
240
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335 if (fdecl->isMain() && Argument::dim(f->parameters) == 0) |
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336 { |
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337 PAWI.Index = llidx; |
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338 PAWI.Attrs = llvm::ParamAttr::ByVal; |
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339 attrs.push_back(PAWI); |
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340 llidx++; |
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341 } |
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342 |
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343 // set attrs on the rest of the arguments |
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344 for (; llidx <= funcNumArgs && f->parameters->dim > k; ++llidx,++k) |
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345 { |
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346 Argument* fnarg = (Argument*)f->parameters->data[k]; |
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347 assert(fnarg); |
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348 |
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349 PAWI.Index = llidx; |
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350 PAWI.Attrs = fnarg->llvmAttrs; |
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351 |
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352 if (PAWI.Attrs) |
240
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353 attrs.push_back(PAWI); |
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354 } |
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355 |
445
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356 llvm::PAListPtr palist = llvm::PAListPtr::get(attrs.begin(), attrs.end()); |
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357 func->setParamAttrs(palist); |
240
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358 } |
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359 |
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360 ////////////////////////////////////////////////////////////////////////////////////////// |
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361 |
100 | 362 void DtoDeclareFunction(FuncDeclaration* fdecl) |
363 { | |
173
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364 if (fdecl->ir.declared) return; |
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365 fdecl->ir.declared = true; |
102
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366 |
132 | 367 Logger::println("DtoDeclareFunction(%s): %s", fdecl->toPrettyChars(), fdecl->loc.toChars()); |
100 | 368 LOG_SCOPE; |
369 | |
113
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370 assert(!fdecl->isAbstract()); |
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371 |
121
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372 // intrinsic sanity check |
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373 if (fdecl->llvmInternal == LLVMintrinsic && fdecl->fbody) { |
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374 error(fdecl->loc, "intrinsics cannot have function bodies"); |
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375 fatal(); |
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376 } |
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377 |
240
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378 // get TypeFunction* |
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379 Type* t = DtoDType(fdecl->type); |
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380 TypeFunction* f = (TypeFunction*)t; |
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381 |
100 | 382 bool declareOnly = false; |
102
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383 bool templInst = fdecl->parent && DtoIsTemplateInstance(fdecl->parent); |
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384 if (!templInst && fdecl->getModule() != gIR->dmodule) |
144
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385 { |
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386 Logger::println("not template instance, and not in this module. declare only!"); |
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387 Logger::println("current module: %s", gIR->dmodule->ident->toChars()); |
378
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388 if(fdecl->getModule()) |
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389 Logger::println("func module: %s", fdecl->getModule()->ident->toChars()); |
379
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390 else { |
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391 Logger::println("func not in a module, is runtime"); |
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392 } |
102
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393 declareOnly = true; |
144
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394 } |
102
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395 else if (fdecl->llvmInternal == LLVMva_start) |
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396 declareOnly = true; |
100 | 397 |
173
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398 if (!fdecl->ir.irFunc) { |
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399 fdecl->ir.irFunc = new IrFunction(fdecl); |
100 | 400 } |
401 | |
402 // mangled name | |
443
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403 const char* mangled_name; |
100 | 404 if (fdecl->llvmInternal == LLVMintrinsic) |
443
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405 mangled_name = fdecl->intrinsicName.c_str(); |
100 | 406 else |
407 mangled_name = fdecl->mangle(); | |
408 | |
409 llvm::Function* vafunc = 0; | |
445
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410 if (fdecl->isVaIntrinsic()) |
100 | 411 vafunc = DtoDeclareVaFunction(fdecl); |
412 | |
413 // construct function | |
414 const llvm::FunctionType* functype = DtoFunctionType(fdecl); | |
415 llvm::Function* func = vafunc ? vafunc : gIR->module->getFunction(mangled_name); | |
416 if (!func) | |
205
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417 func = llvm::Function::Create(functype, DtoLinkage(fdecl), mangled_name, gIR->module); |
100 | 418 else |
419 assert(func->getFunctionType() == functype); | |
420 | |
421 // add func to IRFunc | |
173
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422 fdecl->ir.irFunc->func = func; |
100 | 423 |
424 // calling convention | |
425 if (!vafunc && fdecl->llvmInternal != LLVMintrinsic) | |
426 func->setCallingConv(DtoCallingConv(f->linkage)); | |
149
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427 else // fall back to C, it should be the right thing to do |
132 | 428 func->setCallingConv(llvm::CallingConv::C); |
429 | |
173
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430 fdecl->ir.irFunc->func = func; |
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431 assert(llvm::isa<llvm::FunctionType>(f->ir.type->get())); |
100 | 432 |
217
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433 // parameter attributes |
445
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434 if (f->parameters && !fdecl->isIntrinsic()) { |
240
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435 set_param_attrs(f, func, fdecl); |
217
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436 } |
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437 |
116
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438 // main |
100 | 439 if (fdecl->isMain()) { |
440 gIR->mainFunc = func; | |
441 } | |
442 | |
116
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443 // static ctor |
163
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444 if (fdecl->isStaticCtorDeclaration() && fdecl->getModule() == gIR->dmodule) { |
116
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445 gIR->ctors.push_back(fdecl); |
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446 } |
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447 // static dtor |
163
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448 else if (fdecl->isStaticDtorDeclaration() && fdecl->getModule() == gIR->dmodule) { |
116
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449 gIR->dtors.push_back(fdecl); |
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450 } |
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451 |
162
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452 // we never reference parameters of function prototypes |
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453 if (!declareOnly) |
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454 { |
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455 // name parameters |
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456 llvm::Function::arg_iterator iarg = func->arg_begin(); |
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457 int k = 0; |
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458 if (f->llvmRetInPtr) { |
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459 iarg->setName("retval"); |
173
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460 fdecl->ir.irFunc->retArg = iarg; |
162
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461 ++iarg; |
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462 } |
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463 if (f->llvmUsesThis) { |
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464 iarg->setName("this"); |
173
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465 fdecl->ir.irFunc->thisVar = iarg; |
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466 assert(fdecl->ir.irFunc->thisVar); |
162
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467 ++iarg; |
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468 } |
119
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469 |
162
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470 if (f->linkage == LINKd && f->varargs == 1) { |
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471 iarg->setName("_arguments"); |
173
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472 fdecl->ir.irFunc->_arguments = iarg; |
162
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473 ++iarg; |
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474 iarg->setName("_argptr"); |
173
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475 fdecl->ir.irFunc->_argptr = iarg; |
162
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476 ++iarg; |
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477 } |
119
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478 |
162
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479 for (; iarg != func->arg_end(); ++iarg) |
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480 { |
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481 if (fdecl->parameters && fdecl->parameters->dim > k) |
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482 { |
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483 Dsymbol* argsym = (Dsymbol*)fdecl->parameters->data[k++]; |
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484 VarDeclaration* argvd = argsym->isVarDeclaration(); |
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485 assert(argvd); |
173
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486 assert(!argvd->ir.irLocal); |
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487 argvd->ir.irLocal = new IrLocal(argvd); |
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488 argvd->ir.irLocal->value = iarg; |
162
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489 iarg->setName(argvd->ident->toChars()); |
100 | 490 } |
162
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491 else |
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492 { |
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493 iarg->setName("unnamed"); |
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494 } |
100 | 495 } |
496 } | |
497 | |
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498 if (fdecl->isUnitTestDeclaration()) |
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499 gIR->unitTests.push_back(fdecl); |
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500 |
100 | 501 if (!declareOnly) |
102
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502 gIR->defineList.push_back(fdecl); |
133
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503 else |
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504 assert(func->getLinkage() != llvm::GlobalValue::InternalLinkage); |
100 | 505 |
506 Logger::cout() << "func decl: " << *func << '\n'; | |
507 } | |
508 | |
509 ////////////////////////////////////////////////////////////////////////////////////////// | |
510 | |
511 void DtoDefineFunc(FuncDeclaration* fd) | |
512 { | |
173
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513 if (fd->ir.defined) return; |
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514 fd->ir.defined = true; |
102
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515 |
173
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516 assert(fd->ir.declared); |
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517 |
132 | 518 Logger::println("DtoDefineFunc(%s): %s", fd->toPrettyChars(), fd->loc.toChars()); |
102
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519 LOG_SCOPE; |
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520 |
100 | 521 // debug info |
522 if (global.params.symdebug) { | |
523 Module* mo = fd->getModule(); | |
250
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524 fd->ir.irFunc->dwarfSubProg = DtoDwarfSubProgram(fd); |
100 | 525 } |
526 | |
527 Type* t = DtoDType(fd->type); | |
528 TypeFunction* f = (TypeFunction*)t; | |
173
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529 assert(f->ir.type); |
100 | 530 |
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531 llvm::Function* func = fd->ir.irFunc->func; |
100 | 532 const llvm::FunctionType* functype = func->getFunctionType(); |
533 | |
534 // only members of the current module or template instances maybe be defined | |
244
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535 if (!(fd->getModule() == gIR->dmodule || DtoIsTemplateInstance(fd->parent))) |
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536 return; |
100 | 537 |
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538 // set module owner |
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539 fd->ir.DModule = gIR->dmodule; |
205
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540 |
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541 // is there a body? |
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542 if (fd->fbody == NULL) |
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543 return; |
100 | 544 |
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545 Logger::println("Doing function body for: %s", fd->toChars()); |
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546 assert(fd->ir.irFunc); |
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547 gIR->functions.push_back(fd->ir.irFunc); |
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548 |
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549 if (fd->isMain()) |
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550 gIR->emitMain = true; |
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551 |
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552 std::string entryname("entry_"); |
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553 entryname.append(fd->toPrettyChars()); |
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554 |
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555 llvm::BasicBlock* beginbb = llvm::BasicBlock::Create(entryname,func); |
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556 llvm::BasicBlock* endbb = llvm::BasicBlock::Create("endentry",func); |
100 | 557 |
244
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558 //assert(gIR->scopes.empty()); |
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559 gIR->scopes.push_back(IRScope(beginbb, endbb)); |
108
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560 |
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561 // create alloca point |
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562 llvm::Instruction* allocaPoint = new llvm::AllocaInst(LLType::Int32Ty, "alloca point", beginbb); |
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563 gIR->func()->allocapoint = allocaPoint; |
100 | 564 |
244
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565 // need result variable? (not nested) |
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566 if (fd->vresult && !fd->vresult->nestedref) { |
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567 Logger::println("non-nested vresult value"); |
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568 fd->vresult->ir.irLocal = new IrLocal(fd->vresult); |
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569 fd->vresult->ir.irLocal->value = new llvm::AllocaInst(DtoType(fd->vresult->type),"function_vresult",allocaPoint); |
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570 } |
100 | 571 |
254
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572 // give 'this' argument debug info (and storage) |
258
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573 if (fd->needThis() && global.params.symdebug) |
254
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574 { |
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575 LLValue** thisvar = &fd->ir.irFunc->thisVar; |
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576 assert(*thisvar); |
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577 LLValue* thismem = new llvm::AllocaInst((*thisvar)->getType(), "newthis", allocaPoint); |
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578 DtoDwarfLocalVariable(thismem, fd->vthis); |
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579 gIR->ir->CreateStore(*thisvar, thismem); |
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580 *thisvar = thismem; |
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581 } |
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582 |
244
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583 // give arguments storage |
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584 if (fd->parameters) |
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585 { |
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586 size_t n = fd->parameters->dim; |
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587 for (int i=0; i < n; ++i) |
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588 { |
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589 Dsymbol* argsym = (Dsymbol*)fd->parameters->data[i]; |
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590 VarDeclaration* vd = argsym->isVarDeclaration(); |
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591 assert(vd); |
100 | 592 |
258
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593 // FIXME: llvm seems to want an alloca/byval for debug info |
254
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594 if (!vd->needsStorage || vd->nestedref || vd->isRef() || vd->isOut()) |
244
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595 continue; |
254
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596 // debug info for normal aggr params seem to work fine |
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597 else if (DtoIsPassedByRef(vd->type)) |
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598 { |
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599 if (global.params.symdebug) |
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600 DtoDwarfLocalVariable(vd->ir.getIrValue(), vd); |
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601 continue; |
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602 } |
100 | 603 |
244
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604 LLValue* a = vd->ir.irLocal->value; |
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605 assert(a); |
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606 std::string s(a->getName()); |
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607 Logger::println("giving argument '%s' storage", s.c_str()); |
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608 s.append("_storage"); |
225
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609 |
244
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610 LLValue* v = new llvm::AllocaInst(a->getType(),s,allocaPoint); |
245
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611 |
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612 if (global.params.symdebug) |
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613 DtoDwarfLocalVariable(v, vd); |
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614 |
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615 gIR->ir->CreateStore(a,v); |
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616 vd->ir.irLocal->value = v; |
100 | 617 } |
618 } | |
244
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619 |
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620 // debug info |
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621 if (global.params.symdebug) DtoDwarfFuncStart(fd); |
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622 |
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623 LLValue* parentNested = NULL; |
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624 if (FuncDeclaration* fd2 = fd->toParent2()->isFuncDeclaration()) { |
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625 if (!fd->isStatic()) // huh? |
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626 parentNested = fd2->ir.irFunc->nestedVar; |
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627 } |
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628 |
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629 // need result variable? (nested) |
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630 if (fd->vresult && fd->vresult->nestedref) { |
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631 Logger::println("nested vresult value: %s", fd->vresult->toChars()); |
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632 fd->nestedVars.insert(fd->vresult); |
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633 } |
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634 |
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635 // construct nested variables struct |
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636 if (!fd->nestedVars.empty() || parentNested) { |
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637 std::vector<const LLType*> nestTypes; |
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638 int j = 0; |
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639 if (parentNested) { |
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640 nestTypes.push_back(parentNested->getType()); |
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641 j++; |
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642 } |
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643 for (std::set<VarDeclaration*>::iterator i=fd->nestedVars.begin(); i!=fd->nestedVars.end(); ++i) { |
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644 VarDeclaration* vd = *i; |
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645 Logger::println("referenced nested variable %s", vd->toChars()); |
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646 if (!vd->ir.irLocal) |
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647 vd->ir.irLocal = new IrLocal(vd); |
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648 vd->ir.irLocal->nestedIndex = j++; |
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649 if (vd->isParameter()) { |
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650 if (!vd->ir.irLocal->value) { |
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651 assert(vd == fd->vthis); |
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652 vd->ir.irLocal->value = fd->ir.irFunc->thisVar; |
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653 } |
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654 assert(vd->ir.irLocal->value); |
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655 nestTypes.push_back(vd->ir.irLocal->value->getType()); |
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656 } |
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657 else { |
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658 nestTypes.push_back(DtoType(vd->type)); |
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659 } |
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660 } |
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661 const llvm::StructType* nestSType = llvm::StructType::get(nestTypes); |
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662 Logger::cout() << "nested var struct has type:" << *nestSType << '\n'; |
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663 fd->ir.irFunc->nestedVar = new llvm::AllocaInst(nestSType,"nestedvars",allocaPoint); |
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664 if (parentNested) { |
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665 assert(fd->ir.irFunc->thisVar); |
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666 LLValue* ptr = gIR->ir->CreateBitCast(fd->ir.irFunc->thisVar, parentNested->getType(), "tmp"); |
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667 gIR->ir->CreateStore(ptr, DtoGEPi(fd->ir.irFunc->nestedVar, 0,0, "tmp")); |
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668 } |
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669 for (std::set<VarDeclaration*>::iterator i=fd->nestedVars.begin(); i!=fd->nestedVars.end(); ++i) { |
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670 VarDeclaration* vd = *i; |
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671 if (vd->isParameter()) { |
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672 assert(vd->ir.irLocal); |
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673 gIR->ir->CreateStore(vd->ir.irLocal->value, DtoGEPi(fd->ir.irFunc->nestedVar, 0, vd->ir.irLocal->nestedIndex, "tmp")); |
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674 vd->ir.irLocal->value = fd->ir.irFunc->nestedVar; |
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675 } |
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676 } |
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677 } |
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678 |
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679 // copy _argptr to a memory location |
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680 if (f->linkage == LINKd && f->varargs == 1) |
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681 { |
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682 LLValue* argptrmem = new llvm::AllocaInst(fd->ir.irFunc->_argptr->getType(), "_argptrmem", gIR->topallocapoint()); |
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683 new llvm::StoreInst(fd->ir.irFunc->_argptr, argptrmem, gIR->scopebb()); |
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684 fd->ir.irFunc->_argptr = argptrmem; |
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685 } |
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686 |
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687 // output function body |
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688 fd->fbody->toIR(gIR); |
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689 |
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690 // llvm requires all basic blocks to end with a TerminatorInst but DMD does not put a return statement |
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691 // in automatically, so we do it here. |
428
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692 if (!gIR->scopereturned()) { |
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693 // pass the previous block into this block |
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694 if (global.params.symdebug) DtoDwarfFuncEnd(fd); |
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695 if (func->getReturnType() == LLType::VoidTy) { |
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696 llvm::ReturnInst::Create(gIR->scopebb()); |
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697 } |
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698 else { |
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699 if (!fd->isMain()) |
244
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700 llvm::ReturnInst::Create(llvm::UndefValue::get(func->getReturnType()), gIR->scopebb()); |
428
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701 else |
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702 llvm::ReturnInst::Create(llvm::Constant::getNullValue(func->getReturnType()), gIR->scopebb()); |
244
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703 } |
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704 } |
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705 |
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706 // erase alloca point |
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707 allocaPoint->eraseFromParent(); |
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708 allocaPoint = 0; |
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709 gIR->func()->allocapoint = 0; |
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710 |
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711 gIR->scopes.pop_back(); |
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712 |
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713 // get rid of the endentry block, it's never used |
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714 assert(!func->getBasicBlockList().empty()); |
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715 func->getBasicBlockList().pop_back(); |
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716 |
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717 // if the last block is empty now, it must be unreachable or it's a bug somewhere else |
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718 // would be nice to figure out how to assert that this is correct |
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719 llvm::BasicBlock* lastbb = &func->getBasicBlockList().back(); |
328
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720 if (lastbb->empty()) |
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721 { |
262
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722 new llvm::UnreachableInst(lastbb); |
244
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723 } |
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724 |
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725 // if the last block is not terminated we return a null value or void |
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726 // for some unknown reason this is needed when a void main() has a inline asm block ... |
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727 // this should be harmless for well formed code! |
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728 lastbb = &func->getBasicBlockList().back(); |
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729 if (!lastbb->getTerminator()) |
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730 { |
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731 Logger::println("adding missing return statement"); |
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732 if (func->getReturnType() == LLType::VoidTy) |
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733 llvm::ReturnInst::Create(lastbb); |
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734 else |
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735 llvm::ReturnInst::Create(llvm::Constant::getNullValue(func->getReturnType()), lastbb); |
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736 } |
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737 |
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738 gIR->functions.pop_back(); |
100 | 739 } |
740 | |
741 ////////////////////////////////////////////////////////////////////////////////////////// | |
742 | |
117 | 743 const llvm::FunctionType* DtoBaseFunctionType(FuncDeclaration* fdecl) |
744 { | |
745 Dsymbol* parent = fdecl->toParent(); | |
746 ClassDeclaration* cd = parent->isClassDeclaration(); | |
747 assert(cd); | |
748 | |
749 FuncDeclaration* f = fdecl; | |
750 | |
751 while (cd) | |
752 { | |
753 ClassDeclaration* base = cd->baseClass; | |
754 if (!base) | |
755 break; | |
756 FuncDeclaration* f2 = base->findFunc(fdecl->ident, (TypeFunction*)fdecl->type); | |
757 if (f2) { | |
758 f = f2; | |
759 cd = base; | |
760 } | |
761 else | |
762 break; | |
763 } | |
764 | |
765 DtoResolveDsymbol(f); | |
766 return llvm::cast<llvm::FunctionType>(DtoType(f->type)); | |
767 } | |
768 | |
769 ////////////////////////////////////////////////////////////////////////////////////////// | |
131 | 770 |
771 DValue* DtoArgument(Argument* fnarg, Expression* argexp) | |
772 { | |
773 Logger::println("DtoArgument"); | |
774 LOG_SCOPE; | |
775 | |
776 DValue* arg = argexp->toElem(gIR); | |
777 | |
778 // ref/out arg | |
779 if (fnarg && ((fnarg->storageClass & STCref) || (fnarg->storageClass & STCout))) | |
780 { | |
781 if (arg->isVar() || arg->isLRValue()) | |
782 arg = new DImValue(argexp->type, arg->getLVal(), false); | |
783 else | |
784 arg = new DImValue(argexp->type, arg->getRVal(), false); | |
785 } | |
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786 // byval arg, but expr has no storage yet |
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787 else if (DtoIsPassedByRef(argexp->type) && (arg->isSlice() || arg->isComplex() || arg->isNull())) |
131 | 788 { |
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789 LLValue* alloc = new llvm::AllocaInst(DtoType(argexp->type), "tmpparam", gIR->topallocapoint()); |
131 | 790 DVarValue* vv = new DVarValue(argexp->type, alloc, true); |
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791 DtoAssign(argexp->loc, vv, arg); |
131 | 792 arg = vv; |
793 } | |
794 | |
795 return arg; | |
796 } | |
797 | |
798 ////////////////////////////////////////////////////////////////////////////////////////// | |
799 | |
213
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800 void DtoVariadicArgument(Expression* argexp, LLValue* dst) |
131 | 801 { |
802 Logger::println("DtoVariadicArgument"); | |
803 LOG_SCOPE; | |
347
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804 DVarValue vv(argexp->type, dst, true); |
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805 DtoAssign(argexp->loc, &vv, argexp->toElem(gIR)); |
131 | 806 } |
807 | |
808 ////////////////////////////////////////////////////////////////////////////////////////// | |
445
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809 |
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|
810 bool FuncDeclaration::isIntrinsic() |
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811 { |
cc40db549aea
Changed the handling of variadic intrinsics a bit.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
443
diff
changeset
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812 return (llvmInternal == LLVMintrinsic || isVaIntrinsic()); |
cc40db549aea
Changed the handling of variadic intrinsics a bit.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
443
diff
changeset
|
813 } |
cc40db549aea
Changed the handling of variadic intrinsics a bit.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
443
diff
changeset
|
814 |
cc40db549aea
Changed the handling of variadic intrinsics a bit.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
443
diff
changeset
|
815 bool FuncDeclaration::isVaIntrinsic() |
cc40db549aea
Changed the handling of variadic intrinsics a bit.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
443
diff
changeset
|
816 { |
cc40db549aea
Changed the handling of variadic intrinsics a bit.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
443
diff
changeset
|
817 return (llvmInternal == LLVMva_start || |
cc40db549aea
Changed the handling of variadic intrinsics a bit.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
443
diff
changeset
|
818 llvmInternal == LLVMva_copy || |
cc40db549aea
Changed the handling of variadic intrinsics a bit.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
443
diff
changeset
|
819 llvmInternal == LLVMva_end); |
cc40db549aea
Changed the handling of variadic intrinsics a bit.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
443
diff
changeset
|
820 } |