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view gen/functions.cpp @ 1650:40bd4a0d4870
Update to work with LLVM 2.7.
Removed use of dyn_cast, llvm no compiles
without exceptions and rtti by
default. We do need exceptions for the libconfig stuff, but rtti isn't
necessary (anymore).
Debug info needs to be rewritten, as in LLVM 2.7 the format has
completely changed. To have something to look at while rewriting, the
old code has been wrapped inside #ifndef DISABLE_DEBUG_INFO , this means
that you have to define this to compile at the moment.
Updated tango 0.99.9 patch to include updated EH runtime code, which is
needed for LLVM 2.7 as well.
author | Tomas Lindquist Olsen |
---|---|
date | Wed, 19 May 2010 12:42:32 +0200 |
parents | 207a8a438dea |
children |
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" #include "gen/abi.h" #include "gen/nested.h" using namespace llvm::Attribute; const llvm::FunctionType* DtoFunctionType(Type* type, Type* thistype, Type* nesttype, bool ismain) { if (Logger::enabled()) Logger::println("DtoFunctionType(%s)", type->toChars()); LOG_SCOPE // sanity check assert(type->ty == Tfunction); TypeFunction* f = (TypeFunction*)type; TargetABI* abi = (f->linkage == LINKintrinsic ? TargetABI::getIntrinsic() : gABI); // Tell the ABI we're resolving a new function type abi->newFunctionType(f); // Do not modify f->fty yet; this function may be called recursively if any // of the argument types refer to this type. IrFuncTy fty; // llvm idx counter size_t lidx = 0; // main needs a little special handling if (ismain) { fty.ret = new IrFuncTyArg(Type::tint32, false); } // sane return value else { Type* rt = f->next; unsigned a = 0; // sret return if (abi->returnInArg(f)) { fty.arg_sret = new IrFuncTyArg(rt, true, StructRet | NoAlias | NoCapture); rt = Type::tvoid; lidx++; } // sext/zext return else if (unsigned se = DtoShouldExtend(rt)) { a = se; } fty.ret = new IrFuncTyArg(rt, false, a); } lidx++; // member functions if (thistype) { bool toref = (thistype->toBasetype()->ty == Tstruct); fty.arg_this = new IrFuncTyArg(thistype, toref); lidx++; } // and nested functions else if (nesttype) { fty.arg_nest = new IrFuncTyArg(nesttype, false); lidx++; } // vararg functions are special too if (f->varargs) { if (f->linkage == LINKd) { // d style with hidden args // 2 (array) is handled by the frontend if (f->varargs == 1) { // _arguments fty.arg_arguments = new IrFuncTyArg(Type::typeinfo->type->arrayOf(), false); lidx++; // _argptr fty.arg_argptr = new IrFuncTyArg(Type::tvoid->pointerTo(), false, NoAlias | NoCapture); lidx++; } } else if (f->linkage == LINKc) { fty.c_vararg = true; } else { type->error(0, "invalid linkage for variadic function"); fatal(); } } // if this _Dmain() doesn't have an argument, we force it to have one int nargs = Parameter::dim(f->parameters); if (ismain && nargs == 0) { Type* mainargs = Type::tchar->arrayOf()->arrayOf(); fty.args.push_back(new IrFuncTyArg(mainargs, false)); lidx++; } // add explicit parameters else for (int i = 0; i < nargs; i++) { // get argument Parameter* arg = Parameter::getNth(f->parameters, i); // reference semantics? ref, out and static arrays are bool byref = (arg->storageClass & (STCref|STCout)) || (arg->type->toBasetype()->ty == Tsarray); Type* argtype = arg->type; unsigned a = 0; // handle lazy args if (arg->storageClass & STClazy) { Logger::println("lazy param"); TypeFunction *ltf = new TypeFunction(NULL, arg->type, 0, LINKd); TypeDelegate *ltd = new TypeDelegate(ltf); argtype = ltd; } // byval else if (abi->passByVal(byref ? argtype->pointerTo() : argtype)) { if (!byref) a |= llvm::Attribute::ByVal; byref = true; } // sext/zext else if (!byref) { a |= DtoShouldExtend(argtype); } fty.args.push_back(new IrFuncTyArg(argtype, byref, a)); lidx++; } // Now we can modify f->fty safely. f->fty = fty; // let the abi rewrite the types as necesary abi->rewriteFunctionType(f); // Tell the ABI we're done with this function type abi->doneWithFunctionType(); // build the function type std::vector<const LLType*> argtypes; argtypes.reserve(lidx); if (f->fty.arg_sret) argtypes.push_back(f->fty.arg_sret->ltype); if (f->fty.arg_this) argtypes.push_back(f->fty.arg_this->ltype); if (f->fty.arg_nest) argtypes.push_back(f->fty.arg_nest->ltype); if (f->fty.arg_arguments) argtypes.push_back(f->fty.arg_arguments->ltype); if (f->fty.arg_argptr) argtypes.push_back(f->fty.arg_argptr->ltype); size_t beg = argtypes.size(); size_t nargs2 = f->fty.args.size(); for (size_t i = 0; i < nargs2; i++) { argtypes.push_back(f->fty.args[i]->ltype); } // reverse params? if (f->fty.reverseParams && nargs2 > 1) { std::reverse(argtypes.begin() + beg, argtypes.end()); } llvm::FunctionType* functype = llvm::FunctionType::get(f->fty.ret->ltype, argtypes, f->fty.c_vararg); Logger::cout() << "Final function type: " << *functype << "\n"; return functype; } ////////////////////////////////////////////////////////////////////////////////////////// static const llvm::FunctionType* DtoVaFunctionType(FuncDeclaration* fdecl) { TypeFunction* f = (TypeFunction*)fdecl->type; const llvm::FunctionType* fty = 0; // create new ir funcTy f->fty.reset(); f->fty.ret = new IrFuncTyArg(Type::tvoid, false); f->fty.args.push_back(new IrFuncTyArg(Type::tvoid->pointerTo(), false)); if (fdecl->llvmInternal == LLVMva_start) fty = GET_INTRINSIC_DECL(vastart)->getFunctionType(); else if (fdecl->llvmInternal == LLVMva_copy) { fty = GET_INTRINSIC_DECL(vacopy)->getFunctionType(); f->fty.args.push_back(new IrFuncTyArg(Type::tvoid->pointerTo(), false)); } else if (fdecl->llvmInternal == LLVMva_end) fty = GET_INTRINSIC_DECL(vaend)->getFunctionType(); assert(fty); return fty; } ////////////////////////////////////////////////////////////////////////////////////////// const llvm::FunctionType* DtoFunctionType(FuncDeclaration* fdecl) { // handle for C vararg intrinsics if (fdecl->isVaIntrinsic()) return DtoVaFunctionType(fdecl); Type *dthis=0, *dnest=0; if (fdecl->needThis()) { if (AggregateDeclaration* ad = fdecl->isMember2()) { Logger::println("isMember = this is: %s", ad->type->toChars()); dthis = ad->type; const LLType* thisty = DtoType(dthis); //Logger::cout() << "this llvm type: " << *thisty << '\n'; if (ad->isStructDeclaration()) 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()) { dnest = Type::tvoid->pointerTo(); } const llvm::FunctionType* functype = DtoFunctionType(fdecl->type, dthis, dnest, fdecl->isMain()); return functype; } ////////////////////////////////////////////////////////////////////////////////////////// static llvm::Function* DtoDeclareVaFunction(FuncDeclaration* fdecl) { TypeFunction* f = (TypeFunction*)fdecl->type->toBasetype(); 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()) { Logger::println("Ignoring unittest %s", fdecl->toPrettyChars()); return; // ignore declaration completely } if (fdecl->ir.resolved) return; fdecl->ir.resolved = true; //printf("resolve function: %s\n", fdecl->toPrettyChars()); 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.resolved = true; 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; } else if (tempdecl->llvmInternal == LLVMintrinsic) { Logger::println("overloaded intrinsic found"); fdecl->llvmInternal = LLVMintrinsic; DtoOverloadedIntrinsicName(tinst, tempdecl, fdecl->intrinsicName); fdecl->linkage = LINKintrinsic; ((TypeFunction*)fdecl->type)->linkage = LINKintrinsic; } else if (tempdecl->llvmInternal == LLVMinline_asm) { Logger::println("magic inline asm found"); TypeFunction* tf = (TypeFunction*)fdecl->type; if (tf->varargs != 1 || (fdecl->parameters && fdecl->parameters->dim != 0)) { error("invalid __asm declaration, must be a D style variadic with no explicit parameters"); fatal(); } fdecl->llvmInternal = LLVMinline_asm; fdecl->ir.resolved = true; fdecl->ir.declared = true; fdecl->ir.initialized = true; fdecl->ir.defined = true; return; // this gets mapped to a special inline asm call, no point in going on. } } DtoType(fdecl->type); Logger::println("DtoResolveFunction(%s): %s", fdecl->toPrettyChars(), fdecl->loc.toChars()); LOG_SCOPE; // queue declaration unless the function is abstract without body if (!fdecl->isAbstract() || fdecl->fbody) { DtoDeclareFunction(fdecl); } } ////////////////////////////////////////////////////////////////////////////////////////// static void set_param_attrs(TypeFunction* f, llvm::Function* func, FuncDeclaration* fdecl) { int funcNumArgs = func->getArgumentList().size(); LLSmallVector<llvm::AttributeWithIndex, 9> attrs; llvm::AttributeWithIndex PAWI; int idx = 0; // handle implicit args #define ADD_PA(X) \ if (f->fty.X) { \ if (f->fty.X->attrs) { \ PAWI.Index = idx; \ PAWI.Attrs = f->fty.X->attrs; \ attrs.push_back(PAWI); \ } \ idx++; \ } ADD_PA(ret) ADD_PA(arg_sret) ADD_PA(arg_this) ADD_PA(arg_nest) ADD_PA(arg_arguments) ADD_PA(arg_argptr) #undef ADD_PA // set attrs on the rest of the arguments size_t n = Parameter::dim(f->parameters); LLSmallVector<unsigned,8> attrptr(n, 0); for (size_t k = 0; k < n; ++k) { Parameter* fnarg = Parameter::getNth(f->parameters, k); assert(fnarg); attrptr[k] = f->fty.args[k]->attrs; } // reverse params? if (f->fty.reverseParams) { std::reverse(attrptr.begin(), attrptr.end()); } // build rest of attrs list for (int i = 0; i < n; i++) { if (attrptr[i]) { PAWI.Index = idx+i; PAWI.Attrs = attrptr[i]; attrs.push_back(PAWI); } } llvm::AttrListPtr attrlist = llvm::AttrListPtr::get(attrs.begin(), attrs.end()); func->setAttributes(attrlist); } ////////////////////////////////////////////////////////////////////////////////////////// void DtoDeclareFunction(FuncDeclaration* fdecl) { DtoResolveFunction(fdecl); if (fdecl->ir.declared) return; fdecl->ir.declared = true; Logger::println("DtoDeclareFunction(%s): %s", fdecl->toPrettyChars(), fdecl->loc.toChars()); LOG_SCOPE; //printf("declare function: %s\n", fdecl->toPrettyChars()); // intrinsic sanity check if (fdecl->llvmInternal == LLVMintrinsic && fdecl->fbody) { error(fdecl->loc, "intrinsics cannot have function bodies"); fatal(); } // get TypeFunction* Type* t = fdecl->type->toBasetype(); TypeFunction* f = (TypeFunction*)t; bool declareOnly = !mustDefineSymbol(fdecl); 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); if (Logger::enabled()) Logger::cout() << "func = " << *func << std::endl; // add func to IRFunc fdecl->ir.irFunc->func = func; // calling convention if (!vafunc && fdecl->llvmInternal != LLVMintrinsic) func->setCallingConv(DtoCallingConv(fdecl->loc, 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; // parameter attributes if (!fdecl->isIntrinsic()) { set_param_attrs(f, func, fdecl); } // main if (fdecl->isMain()) { gIR->mainFunc = func; } // static ctor if (fdecl->isStaticCtorDeclaration()) { if (mustDefineSymbol(fdecl)) { gIR->ctors.push_back(fdecl); } } // static dtor else if (fdecl->isStaticDtorDeclaration()) { if (mustDefineSymbol(fdecl)) { gIR->dtors.push_back(fdecl); } } // we never reference parameters of function prototypes std::string str; if (!declareOnly) { // name parameters llvm::Function::arg_iterator iarg = func->arg_begin(); if (f->fty.arg_sret) { iarg->setName(".sret_arg"); fdecl->ir.irFunc->retArg = iarg; ++iarg; } if (f->fty.arg_this) { iarg->setName(".this_arg"); fdecl->ir.irFunc->thisArg = iarg; assert(fdecl->ir.irFunc->thisArg); ++iarg; } else if (f->fty.arg_nest) { iarg->setName(".nest_arg"); fdecl->ir.irFunc->nestArg = iarg; assert(fdecl->ir.irFunc->nestArg); ++iarg; } if (f->fty.arg_argptr) { iarg->setName("._arguments"); fdecl->ir.irFunc->_arguments = iarg; ++iarg; iarg->setName("._argptr"); fdecl->ir.irFunc->_argptr = iarg; ++iarg; } int k = 0; for (; iarg != func->arg_end(); ++iarg) { if (fdecl->parameters && fdecl->parameters->dim > k) { Dsymbol* argsym; if (f->fty.reverseParams) argsym = (Dsymbol*)fdecl->parameters->data[fdecl->parameters->dim-k-1]; else 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; str = argvd->ident->toChars(); str.append("_arg"); iarg->setName(str); k++; } else { iarg->setName("unnamed"); } } } if (fdecl->isUnitTestDeclaration() && !declareOnly) gIR->unitTests.push_back(fdecl); if (!declareOnly) Type::sir->addFunctionBody(fdecl->ir.irFunc); else assert(func->getLinkage() != llvm::GlobalValue::InternalLinkage); } ////////////////////////////////////////////////////////////////////////////////////////// // FIXME: this isn't too pretty! void DtoDefineFunction(FuncDeclaration* fd) { DtoDeclareFunction(fd); if (fd->ir.defined) return; fd->ir.defined = true; assert(fd->ir.declared); if (Logger::enabled()) Logger::println("DtoDefineFunc(%s): %s", fd->toPrettyChars(), fd->loc.toChars()); LOG_SCOPE; // if this function is naked, we take over right away! no standard processing! if (fd->naked) { DtoDefineNakedFunction(fd); return; } #ifndef DISABLE_DEBUG_INFO // debug info if (global.params.symdebug) fd->ir.irFunc->diSubprogram = DtoDwarfSubProgram(fd); #endif Type* t = fd->type->toBasetype(); TypeFunction* f = (TypeFunction*)t; assert(f->irtype); llvm::Function* func = fd->ir.irFunc->func; const llvm::FunctionType* functype = func->getFunctionType(); // sanity check assert(mustDefineSymbol(fd)); // 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); IrFunction* irfunction = fd->ir.irFunc; gIR->functions.push_back(irfunction); if (fd->isMain()) gIR->emitMain = true; std::string entryname("entry"); llvm::BasicBlock* beginbb = llvm::BasicBlock::Create(gIR->context(), entryname,func); llvm::BasicBlock* endbb = llvm::BasicBlock::Create(gIR->context(), "endentry",func); //assert(gIR->scopes.empty()); gIR->scopes.push_back(IRScope(beginbb, endbb)); // create alloca point // this gets erased when the function is complete, so alignment etc does not matter at all llvm::Instruction* allocaPoint = new llvm::AllocaInst(LLType::getInt32Ty(gIR->context()), "alloca point", beginbb); irfunction->allocapoint = allocaPoint; #ifndef DISABLE_DEBUG_INFO // debug info - after all allocas, but before any llvm.dbg.declare etc if (global.params.symdebug) DtoDwarfFuncStart(fd); #endif // this hack makes sure the frame pointer elimination optimization is disabled. // this this eliminates a bunch of inline asm related issues. if (fd->inlineAsm) { // emit a call to llvm_eh_unwind_init LLFunction* hack = GET_INTRINSIC_DECL(eh_unwind_init); gIR->ir->CreateCall(hack, ""); } // give the 'this' argument storage and debug info if (f->fty.arg_this) { LLValue* thisvar = irfunction->thisArg; assert(thisvar); LLValue* thismem = DtoRawAlloca(thisvar->getType(), 0, "this"); // FIXME: align? DtoStore(thisvar, thismem); irfunction->thisArg = thismem; assert(!fd->vthis->ir.irLocal); fd->vthis->ir.irLocal = new IrLocal(fd->vthis); fd->vthis->ir.irLocal->value = thismem; #ifndef DISABLE_DEBUG_INFO if (global.params.symdebug) DtoDwarfLocalVariable(thismem, fd->vthis); #endif #if DMDV1 if (fd->vthis->nestedref) { fd->nestedVars.insert(fd->vthis); } #endif } // give arguments storage // and debug info if (fd->parameters) { size_t n = f->fty.args.size(); assert(n == fd->parameters->dim); for (int i=0; i < n; ++i) { Dsymbol* argsym = (Dsymbol*)fd->parameters->data[i]; VarDeclaration* vd = argsym->isVarDeclaration(); assert(vd); IrLocal* irloc = vd->ir.irLocal; assert(irloc); #if DMDV1 if (vd->nestedref) { fd->nestedVars.insert(vd); } #endif bool refout = vd->storage_class & (STCref | STCout); bool lazy = vd->storage_class & STClazy; if (!refout && (!f->fty.args[i]->byref || lazy)) { // alloca a stack slot for this first class value arg const LLType* argt; if (lazy) argt = irloc->value->getType(); else argt = DtoType(vd->type); LLValue* mem = DtoRawAlloca(argt, 0, vd->ident->toChars()); // let the abi transform the argument back first DImValue arg_dval(vd->type, irloc->value); f->fty.getParam(vd->type, i, &arg_dval, mem); // set the arg var value to the alloca irloc->value = mem; } #ifndef DISABLE_DEBUG_INFO if (global.params.symdebug && !(isaArgument(irloc->value) && !isaArgument(irloc->value)->hasByValAttr()) && !refout) DtoDwarfLocalVariable(irloc->value, vd); #endif } } // need result variable? (nested) #if DMDV1 if (fd->vresult && fd->vresult->nestedref) { Logger::println("nested vresult value: %s", fd->vresult->toChars()); fd->nestedVars.insert(fd->vresult); } #endif #if DMDV2 // fill nestedVars size_t nnest = fd->closureVars.dim; for (size_t i = 0; i < nnest; ++i) { VarDeclaration* vd = (VarDeclaration*)fd->closureVars.data[i]; fd->nestedVars.insert(vd); } #endif DtoCreateNestedContext(fd); #if DMDV2 if (fd->vresult && fd->vresult->nestedrefs.dim) // FIXME: not sure here :/ #else if (fd->vresult && fd->vresult->nestedref) #endif { DtoNestedInit(fd->vresult); } else if (fd->vresult) { fd->vresult->ir.irLocal = new IrLocal(fd->vresult); fd->vresult->ir.irLocal->value = DtoAlloca(fd->vresult->type, fd->vresult->toChars()); } // copy _argptr and _arguments to a memory location if (f->linkage == LINKd && f->varargs == 1) { // _argptr LLValue* argptrmem = DtoRawAlloca(fd->ir.irFunc->_argptr->getType(), 0, "_argptr_mem"); new llvm::StoreInst(fd->ir.irFunc->_argptr, argptrmem, gIR->scopebb()); fd->ir.irFunc->_argptr = argptrmem; // _arguments LLValue* argumentsmem = DtoRawAlloca(fd->ir.irFunc->_arguments->getType(), 0, "_arguments_mem"); new llvm::StoreInst(fd->ir.irFunc->_arguments, argumentsmem, gIR->scopebb()); fd->ir.irFunc->_arguments = argumentsmem; } // output function body { FuncGen fg; irfunction->gen = &fg; fd->fbody->toIR(gIR); irfunction->gen = 0; } // TODO: clean up this mess // std::cout << *func << std::endl; llvm::BasicBlock* bb = gIR->scopebb(); if (pred_begin(bb) == pred_end(bb) && bb != &bb->getParent()->getEntryBlock()) { // This block is trivially unreachable, so just delete it. // (This is a common case because it happens when 'return' // is the last statement in a function) bb->eraseFromParent(); } else if (!gIR->scopereturned()) { // 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. // pass the previous block into this block #ifndef DISABLE_DEBUG_INFO if (global.params.symdebug) DtoDwarfFuncEnd(fd); #endif if (func->getReturnType() == LLType::getVoidTy(gIR->context())) { llvm::ReturnInst::Create(gIR->context(), gIR->scopebb()); } else if (!fd->isMain()) { AsmBlockStatement* asmb = fd->fbody->endsWithAsm(); if (asmb) { assert(asmb->abiret); llvm::ReturnInst::Create(gIR->context(), asmb->abiret, bb); } else { llvm::ReturnInst::Create(gIR->context(), llvm::UndefValue::get(func->getReturnType()), bb); } } else llvm::ReturnInst::Create(gIR->context(), LLConstant::getNullValue(func->getReturnType()), bb); } // std::cout << *func << std::endl; // 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(); gIR->functions.pop_back(); // std::cout << *func << std::endl; } ////////////////////////////////////////////////////////////////////////////////////////// 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(Parameter* fnarg, Expression* argexp) { Logger::println("DtoArgument"); LOG_SCOPE; DValue* arg = argexp->toElem(gIR); // ref/out arg if (fnarg && (fnarg->storageClass & (STCref | STCout))) { if (arg->isVar()) arg = new DImValue(argexp->type, arg->getLVal()); else arg = new DImValue(argexp->type, arg->getRVal()); } // lazy arg else if (fnarg && (fnarg->storageClass & STClazy)) { assert(argexp->type->toBasetype()->ty == Tdelegate); assert(!arg->isLVal()); return arg; } // byval arg, but expr has no storage yet else if (DtoIsPassedByRef(argexp->type) && (arg->isSlice() || arg->isNull())) { LLValue* alloc = DtoAlloca(argexp->type, ".tmp_arg"); DVarValue* vv = new DVarValue(argexp->type, alloc); 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); 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); }