Mercurial > projects > ldc
view gen/rttibuilder.cpp @ 1508:e1e93343fc11
Move function codegen data from IrFunction to new FuncGen.
This change reduces memory consumption significantly by releasing the
memory held by the STL containers that are now inside FuncGen.
author | Christian Kamm <kamm incasoftware de> |
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date | Sat, 20 Jun 2009 19:11:44 +0200 |
parents | b6aa03164436 |
children | ad7f2f1862d6 |
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#include "gen/llvm.h" #include "aggregate.h" #include "mtype.h" #include "gen/arrays.h" #include "gen/irstate.h" #include "gen/linkage.h" #include "gen/llvmhelpers.h" #include "gen/rttibuilder.h" #include "gen/tollvm.h" #include "ir/irstruct.h" RTTIBuilder::RTTIBuilder(ClassDeclaration* base_class) { // make sure the base typeinfo class has been processed base_class->codegen(Type::sir); base = base_class; basetype = (TypeClass*)base->type; baseir = base->ir.irStruct; assert(baseir && "no IrStruct for TypeInfo base class"); // just start with adding the vtbl inits.push_back(baseir->getVtblSymbol()); // and monitor push_null_vp(); } void RTTIBuilder::push(llvm::Constant* C) { inits.push_back(C); } void RTTIBuilder::push_null(Type* T) { inits.push_back(getNullValue(DtoType(T))); } void RTTIBuilder::push_null_vp() { inits.push_back(getNullValue(getVoidPtrType())); } void RTTIBuilder::push_typeinfo(Type* t) { inits.push_back(DtoTypeInfoOf(t, true)); } void RTTIBuilder::push_classinfo(ClassDeclaration* cd) { inits.push_back(cd->ir.irStruct->getClassInfoSymbol()); } void RTTIBuilder::push_string(const char* str) { inits.push_back(DtoConstString(str)); } void RTTIBuilder::push_null_void_array() { const llvm::Type* T = DtoType(Type::tvoid->arrayOf()); inits.push_back(getNullValue(T)); } void RTTIBuilder::push_void_array(uint64_t dim, llvm::Constant* ptr) { inits.push_back(DtoConstSlice( DtoConstSize_t(dim), DtoBitCast(ptr, getVoidPtrType()) )); } void RTTIBuilder::push_void_array(llvm::Constant* CI, Type* valtype, Dsymbol* mangle_sym) { std::string initname(mangle_sym->mangle()); initname.append(".rtti.voidarr.data"); LLGlobalVariable* G = new llvm::GlobalVariable( CI->getType(), true, TYPEINFO_LINKAGE_TYPE, CI, initname, gIR->module); G->setAlignment(valtype->alignsize()); push_void_array(getTypePaddedSize(CI->getType()), G); } void RTTIBuilder::push_array(llvm::Constant * CI, uint64_t dim, Type* valtype, Dsymbol * mangle_sym) { std::string tmpStr(valtype->arrayOf()->toChars()); tmpStr.erase( remove( tmpStr.begin(), tmpStr.end(), '[' ), tmpStr.end() ); tmpStr.erase( remove( tmpStr.begin(), tmpStr.end(), ']' ), tmpStr.end() ); tmpStr.append("arr"); std::string initname(mangle_sym?mangle_sym->mangle():".ldc"); initname.append(".rtti."); initname.append(tmpStr); initname.append(".data"); LLGlobalVariable* G = new llvm::GlobalVariable( CI->getType(), true, TYPEINFO_LINKAGE_TYPE, CI, initname, gIR->module); G->setAlignment(valtype->alignsize()); push_array(dim, DtoBitCast(G, DtoType(valtype->pointerTo()))); } void RTTIBuilder::push_array(uint64_t dim, llvm::Constant * ptr) { inits.push_back(DtoConstSlice(DtoConstSize_t(dim), ptr)); } void RTTIBuilder::push_uint(unsigned u) { inits.push_back(DtoConstUint(u)); } void RTTIBuilder::push_size(uint64_t s) { inits.push_back(DtoConstSize_t(s)); } void RTTIBuilder::push_funcptr(FuncDeclaration* fd, Type* castto) { if (fd) { fd->codegen(Type::sir); LLConstant* F = fd->ir.irFunc->func; if (castto) F = DtoBitCast(F, DtoType(castto)); inits.push_back(F); } else if (castto) { push_null(castto); } else { push_null_vp(); } } void RTTIBuilder::finalize(IrGlobal* tid) { // create the inititalizer LLConstant* tiInit = llvm::ConstantStruct::get(&inits[0], inits.size(), false); // refine global type llvm::cast<llvm::OpaqueType>(tid->type.get())->refineAbstractTypeTo(tiInit->getType()); // set the initializer isaGlobalVar(tid->value)->setInitializer(tiInit); } LLConstant* RTTIBuilder::get_constant() { // just return the inititalizer return llvm::ConstantStruct::get(&inits[0], inits.size(), false); }