Mercurial > projects > ldc
view gen/functions.cpp @ 454:283d113d4753
Added generation of the llvm 'sret' parameter attribute where applicable.
Fixed some wrong argument handling code when setting parameter attributes.
Updated the tango unittest script in the tango patch, does not work yet, all modules don't compile...
author | Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> |
---|---|
date | Sat, 02 Aug 2008 02:54:57 +0200 |
parents | 30ef3c7bddca |
children | d3d3519b72e8 |
line wrap: on
line source
#include "gen/llvm.h" #include "llvm/Support/CFG.h" #include "llvm/Intrinsics.h" #include "mtype.h" #include "aggregate.h" #include "init.h" #include "declaration.h" #include "template.h" #include "module.h" #include "statement.h" #include "gen/irstate.h" #include "gen/tollvm.h" #include "gen/llvmhelpers.h" #include "gen/runtime.h" #include "gen/arrays.h" #include "gen/logger.h" #include "gen/functions.h" #include "gen/todebug.h" #include "gen/classes.h" #include "gen/dvalue.h" const llvm::FunctionType* DtoFunctionType(Type* type, const LLType* thistype, bool ismain) { assert(type->ty == Tfunction); TypeFunction* f = (TypeFunction*)type; if (type->ir.type != NULL) { return llvm::cast<llvm::FunctionType>(type->ir.type->get()); } bool typesafeVararg = false; bool arrayVararg = false; if (f->linkage == LINKd) { if (f->varargs == 1) typesafeVararg = true; else if (f->varargs == 2) arrayVararg = true; } // return value type const LLType* rettype; const LLType* actualRettype; Type* rt = f->next; bool retinptr = false; bool usesthis = false; // parameter types std::vector<const LLType*> paramvec; if (ismain) { rettype = LLType::Int32Ty; actualRettype = rettype; if (Argument::dim(f->parameters) == 0) { const LLType* arrTy = DtoArrayType(LLType::Int8Ty); const LLType* arrArrTy = DtoArrayType(arrTy); paramvec.push_back(getPtrToType(arrArrTy)); } } else{ assert(rt); if (DtoIsReturnedInArg(rt)) { rettype = getPtrToType(DtoType(rt)); actualRettype = LLType::VoidTy; f->llvmRetInPtr = retinptr = true; } else { rettype = DtoType(rt); actualRettype = rettype; } if (unsigned ea = DtoShouldExtend(rt)) { f->llvmRetAttrs |= ea; } } if (retinptr) { //Logger::cout() << "returning through pointer parameter: " << *rettype << '\n'; paramvec.push_back(rettype); } if (thistype) { paramvec.push_back(thistype); usesthis = true; } if (typesafeVararg) { ClassDeclaration* ti = Type::typeinfo; ti->toObjFile(0); // TODO: multiobj DtoForceConstInitDsymbol(ti); assert(ti->ir.irStruct->constInit); std::vector<const LLType*> types; types.push_back(DtoSize_t()); types.push_back(getPtrToType(getPtrToType(ti->ir.irStruct->constInit->getType()))); const LLType* t1 = llvm::StructType::get(types); paramvec.push_back(getPtrToType(t1)); paramvec.push_back(getPtrToType(LLType::Int8Ty)); } else if (arrayVararg) { // do nothing? } size_t n = Argument::dim(f->parameters); for (int i=0; i < n; ++i) { Argument* arg = Argument::getNth(f->parameters, i); // ensure scalar Type* argT = DtoDType(arg->type); assert(argT); bool refOrOut = ((arg->storageClass & STCref) || (arg->storageClass & STCout)); const LLType* at = DtoType(argT); if (isaStruct(at)) { Logger::println("struct param"); paramvec.push_back(getPtrToType(at)); if (!refOrOut) arg->llvmAttrs |= llvm::ParamAttr::ByVal; } else if (isaArray(at)) { // static array are passed by reference Logger::println("sarray param"); assert(argT->ty == Tsarray); paramvec.push_back(getPtrToType(at)); } else if (llvm::isa<llvm::OpaqueType>(at)) { Logger::println("opaque param"); assert(argT->ty == Tstruct || argT->ty == Tclass); paramvec.push_back(getPtrToType(at)); } else { if (refOrOut) { Logger::println("by ref param"); at = getPtrToType(at); } else { Logger::println("in param"); if (unsigned ea = DtoShouldExtend(argT)) { arg->llvmAttrs |= ea; } } paramvec.push_back(at); } // handle lazy args if (arg->storageClass & STClazy) { Logger::cout() << "for lazy got: " << *paramvec.back() << '\n'; TypeFunction *ltf = new TypeFunction(NULL, arg->type, 0, LINKd); TypeDelegate *ltd = new TypeDelegate(ltf); at = getPtrToType(DtoType(ltd)); Logger::cout() << "lazy updated to: " << *at << '\n'; paramvec.back() = at; // lazy doesn't need byval as the delegate is not visible to the user } } // construct function type bool isvararg = !(typesafeVararg || arrayVararg) && f->varargs; llvm::FunctionType* functype = llvm::FunctionType::get(actualRettype, paramvec, isvararg); f->llvmRetInPtr = retinptr; f->llvmUsesThis = usesthis; f->ir.type = new llvm::PATypeHolder(functype); return functype; } ////////////////////////////////////////////////////////////////////////////////////////// static const llvm::FunctionType* DtoVaFunctionType(FuncDeclaration* fdecl) { // type has already been resolved if (fdecl->type->ir.type != 0) { return llvm::cast<llvm::FunctionType>(fdecl->type->ir.type->get()); } TypeFunction* f = (TypeFunction*)fdecl->type; const llvm::FunctionType* fty = 0; if (fdecl->llvmInternal == LLVMva_start) fty = GET_INTRINSIC_DECL(vastart)->getFunctionType(); else if (fdecl->llvmInternal == LLVMva_copy) fty = GET_INTRINSIC_DECL(vacopy)->getFunctionType(); else if (fdecl->llvmInternal == LLVMva_end) fty = GET_INTRINSIC_DECL(vaend)->getFunctionType(); assert(fty); f->ir.type = new llvm::PATypeHolder(fty); return fty; } ////////////////////////////////////////////////////////////////////////////////////////// const llvm::FunctionType* DtoFunctionType(FuncDeclaration* fdecl) { // handle for C vararg intrinsics if (fdecl->isVaIntrinsic()) return DtoVaFunctionType(fdecl); // type has already been resolved if (fdecl->type->ir.type != 0) return llvm::cast<llvm::FunctionType>(fdecl->type->ir.type->get()); const LLType* thisty = NULL; if (fdecl->needThis()) { if (AggregateDeclaration* ad = fdecl->isMember2()) { Logger::println("isMember = this is: %s", ad->type->toChars()); thisty = DtoType(ad->type); //Logger::cout() << "this llvm type: " << *thisty << '\n'; if (isaStruct(thisty) || (!gIR->structs.empty() && thisty == gIR->topstruct()->recty.get())) thisty = getPtrToType(thisty); } else { Logger::println("chars: %s type: %s kind: %s", fdecl->toChars(), fdecl->type->toChars(), fdecl->kind()); assert(0); } } else if (fdecl->isNested()) { thisty = getPtrToType(LLType::Int8Ty); } const llvm::FunctionType* functype = DtoFunctionType(fdecl->type, thisty, fdecl->isMain()); return functype; } ////////////////////////////////////////////////////////////////////////////////////////// static llvm::Function* DtoDeclareVaFunction(FuncDeclaration* fdecl) { TypeFunction* f = (TypeFunction*)DtoDType(fdecl->type); const llvm::FunctionType* fty = DtoVaFunctionType(fdecl); llvm::Function* func = 0; if (fdecl->llvmInternal == LLVMva_start) func = GET_INTRINSIC_DECL(vastart); else if (fdecl->llvmInternal == LLVMva_copy) func = GET_INTRINSIC_DECL(vacopy); else if (fdecl->llvmInternal == LLVMva_end) func = GET_INTRINSIC_DECL(vaend); assert(func); fdecl->ir.irFunc->func = func; return func; } ////////////////////////////////////////////////////////////////////////////////////////// void DtoResolveFunction(FuncDeclaration* fdecl) { if (!global.params.useUnitTests && fdecl->isUnitTestDeclaration()) { return; // ignore declaration completely } // is imported and we don't have access? if (fdecl->getModule() != gIR->dmodule) { if (fdecl->prot() == PROTprivate) return; } if (fdecl->ir.resolved) return; fdecl->ir.resolved = true; Logger::println("DtoResolveFunction(%s): %s", fdecl->toPrettyChars(), fdecl->loc.toChars()); LOG_SCOPE; if (fdecl->parent) if (TemplateInstance* tinst = fdecl->parent->isTemplateInstance()) { TemplateDeclaration* tempdecl = tinst->tempdecl; if (tempdecl->llvmInternal == LLVMva_arg) { Logger::println("magic va_arg found"); fdecl->llvmInternal = LLVMva_arg; fdecl->ir.declared = true; fdecl->ir.initialized = true; fdecl->ir.defined = true; return; // this gets mapped to an instruction so a declaration makes no sence } else if (tempdecl->llvmInternal == LLVMva_start) { Logger::println("magic va_start found"); fdecl->llvmInternal = LLVMva_start; } } DtoFunctionType(fdecl); // queue declaration if (!fdecl->isAbstract()) gIR->declareList.push_back(fdecl); } ////////////////////////////////////////////////////////////////////////////////////////// static void set_param_attrs(TypeFunction* f, llvm::Function* func, FuncDeclaration* fdecl) { int llidx = 1; if (f->llvmRetInPtr) ++llidx; if (f->llvmUsesThis) ++llidx; if (f->linkage == LINKd && f->varargs == 1) llidx += 2; int funcNumArgs = func->getArgumentList().size(); std::vector<llvm::ParamAttrsWithIndex> attrs; int k = 0; llvm::ParamAttrsWithIndex PAWI; // set return value attrs if any if (f->llvmRetAttrs) { PAWI.Index = 0; PAWI.Attrs = f->llvmRetAttrs; attrs.push_back(PAWI); } // set sret param if (f->llvmRetInPtr) { PAWI.Index = 1; PAWI.Attrs = llvm::ParamAttr::StructRet; attrs.push_back(PAWI); } // set byval attrs on implicit main arg if (fdecl->isMain() && Argument::dim(f->parameters) == 0) { PAWI.Index = llidx; PAWI.Attrs = llvm::ParamAttr::ByVal; attrs.push_back(PAWI); llidx++; } // set attrs on the rest of the arguments for (; llidx <= funcNumArgs && Argument::dim(f->parameters) > k; ++llidx,++k) { Argument* fnarg = Argument::getNth(f->parameters, k); assert(fnarg); PAWI.Index = llidx; PAWI.Attrs = fnarg->llvmAttrs; if (PAWI.Attrs) attrs.push_back(PAWI); } llvm::PAListPtr palist = llvm::PAListPtr::get(attrs.begin(), attrs.end()); func->setParamAttrs(palist); } ////////////////////////////////////////////////////////////////////////////////////////// void DtoDeclareFunction(FuncDeclaration* fdecl) { if (fdecl->ir.declared) return; fdecl->ir.declared = true; Logger::println("DtoDeclareFunction(%s): %s", fdecl->toPrettyChars(), fdecl->loc.toChars()); LOG_SCOPE; assert(!fdecl->isAbstract()); // intrinsic sanity check if (fdecl->llvmInternal == LLVMintrinsic && fdecl->fbody) { error(fdecl->loc, "intrinsics cannot have function bodies"); fatal(); } // get TypeFunction* Type* t = DtoDType(fdecl->type); TypeFunction* f = (TypeFunction*)t; bool declareOnly = false; bool templInst = fdecl->parent && DtoIsTemplateInstance(fdecl->parent); if (!templInst && fdecl->getModule() != gIR->dmodule) { Logger::println("not template instance, and not in this module. declare only!"); Logger::println("current module: %s", gIR->dmodule->ident->toChars()); if(fdecl->getModule()) Logger::println("func module: %s", fdecl->getModule()->ident->toChars()); else { Logger::println("func not in a module, is runtime"); } declareOnly = true; } else if (fdecl->llvmInternal == LLVMva_start) declareOnly = true; if (!fdecl->ir.irFunc) { fdecl->ir.irFunc = new IrFunction(fdecl); } // mangled name const char* mangled_name; if (fdecl->llvmInternal == LLVMintrinsic) mangled_name = fdecl->intrinsicName.c_str(); else mangled_name = fdecl->mangle(); llvm::Function* vafunc = 0; if (fdecl->isVaIntrinsic()) vafunc = DtoDeclareVaFunction(fdecl); // construct function const llvm::FunctionType* functype = DtoFunctionType(fdecl); llvm::Function* func = vafunc ? vafunc : gIR->module->getFunction(mangled_name); if (!func) func = llvm::Function::Create(functype, DtoLinkage(fdecl), mangled_name, gIR->module); else assert(func->getFunctionType() == functype); // add func to IRFunc fdecl->ir.irFunc->func = func; // calling convention if (!vafunc && fdecl->llvmInternal != LLVMintrinsic) func->setCallingConv(DtoCallingConv(f->linkage)); else // fall back to C, it should be the right thing to do func->setCallingConv(llvm::CallingConv::C); fdecl->ir.irFunc->func = func; assert(llvm::isa<llvm::FunctionType>(f->ir.type->get())); // parameter attributes if (!fdecl->isIntrinsic()) { set_param_attrs(f, func, fdecl); } // main if (fdecl->isMain()) { gIR->mainFunc = func; } // static ctor if (fdecl->isStaticCtorDeclaration() && fdecl->getModule() == gIR->dmodule) { gIR->ctors.push_back(fdecl); } // static dtor else if (fdecl->isStaticDtorDeclaration() && fdecl->getModule() == gIR->dmodule) { gIR->dtors.push_back(fdecl); } // we never reference parameters of function prototypes if (!declareOnly) { // name parameters llvm::Function::arg_iterator iarg = func->arg_begin(); int k = 0; if (f->llvmRetInPtr) { iarg->setName("retval"); fdecl->ir.irFunc->retArg = iarg; ++iarg; } if (f->llvmUsesThis) { iarg->setName(fdecl->isNested()?".context":"this"); fdecl->ir.irFunc->thisVar = iarg; assert(fdecl->ir.irFunc->thisVar); ++iarg; } if (f->linkage == LINKd && f->varargs == 1) { iarg->setName("_arguments"); fdecl->ir.irFunc->_arguments = iarg; ++iarg; iarg->setName("_argptr"); fdecl->ir.irFunc->_argptr = iarg; ++iarg; } for (; iarg != func->arg_end(); ++iarg) { if (fdecl->parameters && fdecl->parameters->dim > k) { Dsymbol* argsym = (Dsymbol*)fdecl->parameters->data[k++]; VarDeclaration* argvd = argsym->isVarDeclaration(); assert(argvd); assert(!argvd->ir.irLocal); argvd->ir.irLocal = new IrLocal(argvd); argvd->ir.irLocal->value = iarg; iarg->setName(argvd->ident->toChars()); } else { iarg->setName("unnamed"); } } } if (fdecl->isUnitTestDeclaration()) gIR->unitTests.push_back(fdecl); if (!declareOnly) gIR->defineList.push_back(fdecl); else assert(func->getLinkage() != llvm::GlobalValue::InternalLinkage); Logger::cout() << "func decl: " << *func << '\n'; } ////////////////////////////////////////////////////////////////////////////////////////// void DtoDefineFunc(FuncDeclaration* fd) { if (fd->ir.defined) return; fd->ir.defined = true; assert(fd->ir.declared); Logger::println("DtoDefineFunc(%s): %s", fd->toPrettyChars(), fd->loc.toChars()); LOG_SCOPE; // debug info if (global.params.symdebug) { Module* mo = fd->getModule(); fd->ir.irFunc->dwarfSubProg = DtoDwarfSubProgram(fd); } Type* t = DtoDType(fd->type); TypeFunction* f = (TypeFunction*)t; assert(f->ir.type); llvm::Function* func = fd->ir.irFunc->func; const llvm::FunctionType* functype = func->getFunctionType(); // only members of the current module or template instances maybe be defined if (!(fd->getModule() == gIR->dmodule || DtoIsTemplateInstance(fd->parent))) return; // set module owner fd->ir.DModule = gIR->dmodule; // is there a body? if (fd->fbody == NULL) return; Logger::println("Doing function body for: %s", fd->toChars()); assert(fd->ir.irFunc); gIR->functions.push_back(fd->ir.irFunc); if (fd->isMain()) gIR->emitMain = true; std::string entryname("entry_"); entryname.append(fd->toPrettyChars()); llvm::BasicBlock* beginbb = llvm::BasicBlock::Create(entryname,func); llvm::BasicBlock* endbb = llvm::BasicBlock::Create("endentry",func); //assert(gIR->scopes.empty()); gIR->scopes.push_back(IRScope(beginbb, endbb)); // create alloca point llvm::Instruction* allocaPoint = new llvm::AllocaInst(LLType::Int32Ty, "alloca point", beginbb); gIR->func()->allocapoint = allocaPoint; // debug info - after all allocas, but before any llvm.dbg.declare etc if (global.params.symdebug) DtoDwarfFuncStart(fd); // need result variable? (not nested) if (fd->vresult && !fd->vresult->nestedref) { Logger::println("non-nested vresult value"); fd->vresult->ir.irLocal = new IrLocal(fd->vresult); fd->vresult->ir.irLocal->value = new llvm::AllocaInst(DtoType(fd->vresult->type),"function_vresult",allocaPoint); } // give 'this' argument debug info (and storage) if (fd->needThis() && global.params.symdebug) { LLValue** thisvar = &fd->ir.irFunc->thisVar; assert(*thisvar); LLValue* thismem = new llvm::AllocaInst((*thisvar)->getType(), "newthis", allocaPoint); DtoDwarfLocalVariable(thismem, fd->vthis); gIR->ir->CreateStore(*thisvar, thismem); *thisvar = thismem; } // give arguments storage if (fd->parameters) { size_t n = fd->parameters->dim; for (int i=0; i < n; ++i) { Dsymbol* argsym = (Dsymbol*)fd->parameters->data[i]; VarDeclaration* vd = argsym->isVarDeclaration(); assert(vd); // FIXME: llvm seems to want an alloca/byval for debug info if (!vd->needsStorage || vd->nestedref || vd->isRef() || vd->isOut()) { Logger::println("skipping arg storage for (%s) %s ", vd->loc.toChars(), vd->toChars()); continue; } // static array params don't support debug info it seems // probably because they're not passed byval else if (vd->type->toBasetype()->ty == Tsarray) { Logger::println("skipping arg storage for static array (%s) %s ", vd->loc.toChars(), vd->toChars()); continue; } // debug info for normal aggr params seem to work fine else if (DtoIsPassedByRef(vd->type)) { Logger::println("skipping arg storage for aggregate (%s) %s ", vd->loc.toChars(), vd->toChars()); if (global.params.symdebug) DtoDwarfLocalVariable(vd->ir.getIrValue(), vd); continue; } LLValue* a = vd->ir.irLocal->value; assert(a); std::string s(a->getName()); Logger::println("giving argument '%s' storage", s.c_str()); s.append("_storage"); LLValue* v = new llvm::AllocaInst(a->getType(),s,allocaPoint); if (global.params.symdebug) DtoDwarfLocalVariable(v, vd); gIR->ir->CreateStore(a,v); vd->ir.irLocal->value = v; } } LLValue* parentNested = NULL; if (FuncDeclaration* fd2 = fd->toParent2()->isFuncDeclaration()) { if (!fd->isStatic()) // huh? parentNested = fd2->ir.irFunc->nestedVar; } // need result variable? (nested) if (fd->vresult && fd->vresult->nestedref) { Logger::println("nested vresult value: %s", fd->vresult->toChars()); fd->nestedVars.insert(fd->vresult); } // construct nested variables struct if (!fd->nestedVars.empty() || parentNested) { std::vector<const LLType*> nestTypes; int j = 0; if (parentNested) { nestTypes.push_back(parentNested->getType()); j++; } for (std::set<VarDeclaration*>::iterator i=fd->nestedVars.begin(); i!=fd->nestedVars.end(); ++i) { VarDeclaration* vd = *i; Logger::println("referenced nested variable %s", vd->toChars()); if (!vd->ir.irLocal) vd->ir.irLocal = new IrLocal(vd); vd->ir.irLocal->nestedIndex = j++; if (vd->isParameter()) { if (!vd->ir.irLocal->value) { assert(vd == fd->vthis); vd->ir.irLocal->value = fd->ir.irFunc->thisVar; } assert(vd->ir.irLocal->value); nestTypes.push_back(vd->ir.irLocal->value->getType()); } else { nestTypes.push_back(DtoType(vd->type)); } } const llvm::StructType* nestSType = llvm::StructType::get(nestTypes); Logger::cout() << "nested var struct has type:" << *nestSType << '\n'; fd->ir.irFunc->nestedVar = new llvm::AllocaInst(nestSType,"nestedvars",allocaPoint); if (parentNested) { assert(fd->ir.irFunc->thisVar); LLValue* ptr = gIR->ir->CreateBitCast(fd->ir.irFunc->thisVar, parentNested->getType(), "tmp"); gIR->ir->CreateStore(ptr, DtoGEPi(fd->ir.irFunc->nestedVar, 0,0, "tmp")); } for (std::set<VarDeclaration*>::iterator i=fd->nestedVars.begin(); i!=fd->nestedVars.end(); ++i) { VarDeclaration* vd = *i; if (vd->isParameter()) { assert(vd->ir.irLocal); gIR->ir->CreateStore(vd->ir.irLocal->value, DtoGEPi(fd->ir.irFunc->nestedVar, 0, vd->ir.irLocal->nestedIndex, "tmp")); vd->ir.irLocal->value = fd->ir.irFunc->nestedVar; } } } // copy _argptr to a memory location if (f->linkage == LINKd && f->varargs == 1) { LLValue* argptrmem = new llvm::AllocaInst(fd->ir.irFunc->_argptr->getType(), "_argptrmem", gIR->topallocapoint()); new llvm::StoreInst(fd->ir.irFunc->_argptr, argptrmem, gIR->scopebb()); fd->ir.irFunc->_argptr = argptrmem; } // output function body fd->fbody->toIR(gIR); // llvm requires all basic blocks to end with a TerminatorInst but DMD does not put a return statement // in automatically, so we do it here. if (!gIR->scopereturned()) { // pass the previous block into this block if (global.params.symdebug) DtoDwarfFuncEnd(fd); if (func->getReturnType() == LLType::VoidTy) { llvm::ReturnInst::Create(gIR->scopebb()); } else { if (!fd->isMain()) llvm::ReturnInst::Create(llvm::UndefValue::get(func->getReturnType()), gIR->scopebb()); else llvm::ReturnInst::Create(llvm::Constant::getNullValue(func->getReturnType()), gIR->scopebb()); } } // erase alloca point allocaPoint->eraseFromParent(); allocaPoint = 0; gIR->func()->allocapoint = 0; gIR->scopes.pop_back(); // get rid of the endentry block, it's never used assert(!func->getBasicBlockList().empty()); func->getBasicBlockList().pop_back(); // if the last block is empty now, it must be unreachable or it's a bug somewhere else // would be nice to figure out how to assert that this is correct llvm::BasicBlock* lastbb = &func->getBasicBlockList().back(); if (lastbb->empty()) { new llvm::UnreachableInst(lastbb); } // if the last block is not terminated we return a null value or void // for some unknown reason this is needed when a void main() has a inline asm block ... // this should be harmless for well formed code! lastbb = &func->getBasicBlockList().back(); if (!lastbb->getTerminator()) { Logger::println("adding missing return statement"); if (func->getReturnType() == LLType::VoidTy) llvm::ReturnInst::Create(lastbb); else llvm::ReturnInst::Create(llvm::Constant::getNullValue(func->getReturnType()), lastbb); } gIR->functions.pop_back(); } ////////////////////////////////////////////////////////////////////////////////////////// const llvm::FunctionType* DtoBaseFunctionType(FuncDeclaration* fdecl) { Dsymbol* parent = fdecl->toParent(); ClassDeclaration* cd = parent->isClassDeclaration(); assert(cd); FuncDeclaration* f = fdecl; while (cd) { ClassDeclaration* base = cd->baseClass; if (!base) break; FuncDeclaration* f2 = base->findFunc(fdecl->ident, (TypeFunction*)fdecl->type); if (f2) { f = f2; cd = base; } else break; } DtoResolveDsymbol(f); return llvm::cast<llvm::FunctionType>(DtoType(f->type)); } ////////////////////////////////////////////////////////////////////////////////////////// DValue* DtoArgument(Argument* fnarg, Expression* argexp) { Logger::println("DtoArgument"); LOG_SCOPE; DValue* arg = argexp->toElem(gIR); // ref/out arg if (fnarg && ((fnarg->storageClass & STCref) || (fnarg->storageClass & STCout))) { if (arg->isVar() || arg->isLRValue()) arg = new DImValue(argexp->type, arg->getLVal(), false); else arg = new DImValue(argexp->type, arg->getRVal(), false); } // byval arg, but expr has no storage yet else if (DtoIsPassedByRef(argexp->type) && (arg->isSlice() || arg->isComplex() || arg->isNull())) { LLValue* alloc = new llvm::AllocaInst(DtoType(argexp->type), "tmpparam", gIR->topallocapoint()); DVarValue* vv = new DVarValue(argexp->type, alloc, true); DtoAssign(argexp->loc, vv, arg); arg = vv; } return arg; } ////////////////////////////////////////////////////////////////////////////////////////// void DtoVariadicArgument(Expression* argexp, LLValue* dst) { Logger::println("DtoVariadicArgument"); LOG_SCOPE; DVarValue vv(argexp->type, dst, true); DtoAssign(argexp->loc, &vv, argexp->toElem(gIR)); } ////////////////////////////////////////////////////////////////////////////////////////// bool FuncDeclaration::isIntrinsic() { return (llvmInternal == LLVMintrinsic || isVaIntrinsic()); } bool FuncDeclaration::isVaIntrinsic() { return (llvmInternal == LLVMva_start || llvmInternal == LLVMva_copy || llvmInternal == LLVMva_end); }