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view gen/llvmhelpers.cpp @ 468:45a67b6f1310
Removed the 'needsstorage' thing from Dsymbol. Arguments are not always given storage when applicable. This is not longer treat specially
in this regard. Code for accessing nested variables and contexts rewritten. Probably more. Fairly well tested.
author | Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> |
---|---|
date | Mon, 04 Aug 2008 02:59:34 +0200 |
parents | 60332cd85308 |
children | 672eb4893b55 |
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#include "gen/llvm.h" #include "llvm/Target/TargetMachineRegistry.h" #include "mars.h" #include "init.h" #include "id.h" #include "expression.h" #include "template.h" #include "gen/tollvm.h" #include "gen/llvmhelpers.h" #include "gen/irstate.h" #include "gen/runtime.h" #include "gen/logger.h" #include "gen/arrays.h" #include "gen/dvalue.h" #include "gen/complex.h" #include "gen/classes.h" #include "gen/functions.h" #include "gen/typeinf.h" #include "gen/todebug.h" /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // DYNAMIC MEMORY HELPERS ////////////////////////////////////////////////////////////////////////////////////////*/ LLValue* DtoNew(Type* newtype) { // get runtime function llvm::Function* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_allocmemoryT"); // get type info LLConstant* ti = DtoTypeInfoOf(newtype); assert(isaPointer(ti)); // call runtime allocator LLValue* mem = gIR->CreateCallOrInvoke(fn, ti, ".gc_mem")->get(); // cast return DtoBitCast(mem, getPtrToType(DtoType(newtype)), ".gc_mem"); } void DtoDeleteMemory(LLValue* ptr) { // get runtime function llvm::Function* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_delmemory"); // build args LLSmallVector<LLValue*,1> arg; arg.push_back(DtoBitCast(ptr, getVoidPtrType(), ".tmp")); // call gIR->CreateCallOrInvoke(fn, arg.begin(), arg.end()); } void DtoDeleteClass(LLValue* inst) { // get runtime function llvm::Function* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_delclass"); // build args LLSmallVector<LLValue*,1> arg; arg.push_back(DtoBitCast(inst, fn->getFunctionType()->getParamType(0), ".tmp")); // call gIR->CreateCallOrInvoke(fn, arg.begin(), arg.end()); } void DtoDeleteInterface(LLValue* inst) { // get runtime function llvm::Function* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_delinterface"); // build args LLSmallVector<LLValue*,1> arg; arg.push_back(DtoBitCast(inst, fn->getFunctionType()->getParamType(0), ".tmp")); // call gIR->CreateCallOrInvoke(fn, arg.begin(), arg.end()); } void DtoDeleteArray(DValue* arr) { // get runtime function llvm::Function* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_delarray"); // build args LLSmallVector<LLValue*,2> arg; arg.push_back(DtoArrayLen(arr)); arg.push_back(DtoBitCast(DtoArrayPtr(arr), getVoidPtrType(), ".tmp")); // call gIR->CreateCallOrInvoke(fn, arg.begin(), arg.end()); } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // ASSERT HELPER ////////////////////////////////////////////////////////////////////////////////////////*/ void DtoAssert(Loc* loc, DValue* msg) { std::vector<LLValue*> args; LLConstant* c; // func const char* fname = msg ? "_d_assert_msg" : "_d_assert"; llvm::Function* fn = LLVM_D_GetRuntimeFunction(gIR->module, fname); // param attrs llvm::PAListPtr palist; int idx = 1; // FIXME: every assert creates a global for the filename !!! c = DtoConstString(loc->filename); // msg param if (msg) { if (DSliceValue* s = msg->isSlice()) { llvm::AllocaInst* alloc = gIR->func()->msgArg; if (!alloc) { alloc = new llvm::AllocaInst(c->getType(), ".assertmsg", gIR->topallocapoint()); DtoSetArray(alloc, DtoArrayLen(s), DtoArrayPtr(s)); gIR->func()->msgArg = alloc; } args.push_back(alloc); } else { args.push_back(msg->getRVal()); } palist = palist.addAttr(idx++, llvm::ParamAttr::ByVal); } // file param llvm::AllocaInst* alloc = gIR->func()->srcfileArg; if (!alloc) { alloc = new llvm::AllocaInst(c->getType(), ".srcfile", gIR->topallocapoint()); gIR->func()->srcfileArg = alloc; } LLValue* ptr = DtoGEPi(alloc, 0,0, "tmp"); DtoStore(c->getOperand(0), ptr); ptr = DtoGEPi(alloc, 0,1, "tmp"); DtoStore(c->getOperand(1), ptr); args.push_back(alloc); palist = palist.addAttr(idx++, llvm::ParamAttr::ByVal); // line param c = DtoConstUint(loc->linnum); args.push_back(c); // call CallOrInvoke* call = gIR->CreateCallOrInvoke(fn, args.begin(), args.end()); call->setParamAttrs(palist); // after assert is always unreachable gIR->ir->CreateUnreachable(); } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // LABEL HELPER ////////////////////////////////////////////////////////////////////////////////////////*/ LabelStatement* DtoLabelStatement(Identifier* ident) { FuncDeclaration* fd = gIR->func()->decl; FuncDeclaration::LabelMap::iterator iter = fd->labmap.find(ident->toChars()); if (iter == fd->labmap.end()) { if (fd->returnLabel && fd->returnLabel->ident->equals(ident)) { assert(fd->returnLabel->statement); return fd->returnLabel->statement; } return NULL; } return iter->second; } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // GOTO HELPER ////////////////////////////////////////////////////////////////////////////////////////*/ void DtoGoto(Loc* loc, Identifier* target, EnclosingHandler* enclosinghandler, TryFinallyStatement* sourcetf) { assert(!gIR->scopereturned()); LabelStatement* lblstmt = DtoLabelStatement(target); if(!lblstmt) { error(*loc, "the label %s does not exist", target->toChars()); fatal(); } // if the target label is inside inline asm, error if(lblstmt->asmLabel) { error(*loc, "cannot goto to label %s inside an inline asm block", target->toChars()); fatal(); } // find target basic block std::string labelname = gIR->func()->getScopedLabelName(target->toChars()); llvm::BasicBlock*& targetBB = gIR->func()->labelToBB[labelname]; if (targetBB == NULL) targetBB = llvm::BasicBlock::Create("label", gIR->topfunc()); // find finallys between goto and label EnclosingHandler* endfinally = enclosinghandler; while(endfinally != NULL && endfinally != lblstmt->enclosinghandler) { endfinally = endfinally->getEnclosing(); } // error if didn't find tf statement of label if(endfinally != lblstmt->enclosinghandler) error(*loc, "cannot goto into try block"); // goto into finally blocks is forbidden by the spec // though it should not be problematic to implement if(lblstmt->tf != sourcetf) { error(*loc, "spec disallows goto into finally block"); fatal(); } // emit code for finallys between goto and label DtoEnclosingHandlers(enclosinghandler, endfinally); llvm::BranchInst::Create(targetBB, gIR->scopebb()); } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // TRY-FINALLY, VOLATILE AND SYNCHRONIZED HELPER ////////////////////////////////////////////////////////////////////////////////////////*/ void EnclosingSynchro::emitCode(IRState * p) { if (s->exp) DtoLeaveMonitor(s->llsync); else DtoLeaveCritical(s->llsync); } EnclosingHandler* EnclosingSynchro::getEnclosing() { return s->enclosinghandler; } //////////////////////////////////////////////////////////////////////////////////////// void EnclosingVolatile::emitCode(IRState * p) { // store-load barrier DtoMemoryBarrier(false, false, true, false); } EnclosingHandler* EnclosingVolatile::getEnclosing() { return v->enclosinghandler; } //////////////////////////////////////////////////////////////////////////////////////// void EnclosingTryFinally::emitCode(IRState * p) { assert(tf->finalbody); tf->finalbody->toIR(p); } EnclosingHandler* EnclosingTryFinally::getEnclosing() { return tf->enclosinghandler; } //////////////////////////////////////////////////////////////////////////////////////// void DtoEnclosingHandlers(EnclosingHandler* start, EnclosingHandler* end) { // verify that end encloses start EnclosingHandler* endfinally = start; while(endfinally != NULL && endfinally != end) { endfinally = endfinally->getEnclosing(); } assert(endfinally == end); // // emit code for finallys between start and end // // since the labelstatements possibly inside are private // and might already exist push a label scope gIR->func()->pushUniqueLabelScope("enclosing"); EnclosingHandler* tf = start; while(tf != end) { tf->emitCode(gIR); tf = tf->getEnclosing(); } gIR->func()->popLabelScope(); } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // SYNCHRONIZED SECTION HELPERS ////////////////////////////////////////////////////////////////////////////////////////*/ void DtoEnterCritical(LLValue* g) { LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_criticalenter"); gIR->CreateCallOrInvoke(fn, g); } void DtoLeaveCritical(LLValue* g) { LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_criticalexit"); gIR->CreateCallOrInvoke(fn, g); } void DtoEnterMonitor(LLValue* v) { LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_monitorenter"); v = DtoBitCast(v, fn->getFunctionType()->getParamType(0)); gIR->CreateCallOrInvoke(fn, v); } void DtoLeaveMonitor(LLValue* v) { LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_monitorexit"); v = DtoBitCast(v, fn->getFunctionType()->getParamType(0)); gIR->CreateCallOrInvoke(fn, v); } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // NESTED VARIABLE HELPERS ////////////////////////////////////////////////////////////////////////////////////////*/ /* got: context pointer of 'this' function declaration for target context's function want: context pointer of target function in call chain */ static LLValue* dive_into_nested(Dsymbol* from, LLValue* val) { from = from->toParent2(); // parent is a function if (FuncDeclaration* f = from->isFuncDeclaration()) { IrFunction* irfunc = f->ir.irFunc; // parent has nested var struct if (irfunc->nestedVar) { return DtoBitCast(val, irfunc->nestedVar->getType()); } // parent has this argument else if (irfunc->thisVar) { return DtoBitCast(val, irfunc->thisVar->getType()->getContainedType(0)); } // none of the above, means no context is required, dummy. else { return getNullPtr(getVoidPtrType()); } } // parent is a class else if (ClassDeclaration* c = from->isClassDeclaration()) { return DtoBitCast(DtoLoad(val), DtoType(c->type)); } // parent is not valid else { assert(0 && "!(class|function)"); } } LLValue* DtoNestedContext(FuncDeclaration* func) { Logger::println("listing context frame list for funcdecl '%s'", func->toPrettyChars()); LOG_SCOPE; int level = 0; IrFunction* irfunc = gIR->func(); Dsymbol* current = irfunc->decl; // this context ? if (current == func) { return irfunc->nestedVar; } // otherwise use the context argument LLValue* val = dive_into_nested(current, irfunc->thisVar); current = current->toParent2(); assert(val); for (;;) { Logger::cout() << "context: " << *val << '\n'; Logger::println("(%d) looking in: %s (%s)", level, current->toPrettyChars(), current->kind()); if (FuncDeclaration* f = current->isFuncDeclaration()) { if (f == func) { Logger::println("-> found <-"); Logger::cout() << "-> val: " << *val << '\n'; return val; } else { val = DtoLoad(DtoGEPi(val,0,0)); } } else if (ClassDeclaration* c = current->isClassDeclaration()) { val = DtoLoad(DtoGEPi(val, 0, 2+c->vthis->ir.irField->index)); val = dive_into_nested(current, val); } else { Logger::cout() << "val: " << *val << '\n'; assert(0 && "!(class|function)"); } current = current->toParent2(); ++level; } assert(0); return val; } DValue* DtoNestedVariable(Type* astype, VarDeclaration* vd) { IrFunction* irfunc = gIR->func(); // var parent (the scope we're looking for) Dsymbol* varParent = vd->toParent2(); // on level 0 if (varParent == irfunc->decl) { LLValue* nest = irfunc->nestedVar; LLValue* v = DtoGEPi(nest, 0, vd->ir.irLocal->nestedIndex, "tmp"); // references must be loaded to get the variable address if (vd->isParameter() && (vd->isRef() || vd->isOut() || DtoIsPassedByRef(vd->type))) v = DtoLoad(v); return new DVarValue(astype, vd, v, true); } // on level n != 0 FuncDeclaration* varFunc = varParent->isFuncDeclaration(); assert(varFunc); // get context of variable LLValue* ctx = DtoNestedContext(varFunc); // if no local var, it's the context itself (class this) if (!vd->ir.irLocal) return new DImValue(astype, ctx); // extract variable IrLocal* local = vd->ir.irLocal; assert(local); assert(local->nestedIndex >= 0); LLValue* val = DtoGEPi(ctx, 0, local->nestedIndex); // references must be loaded to get the variable address if (vd->isParameter() && (vd->isRef() || vd->isOut() || DtoIsPassedByRef(vd->type))) val = DtoLoad(val); Logger::cout() << "value: " << *val << '\n'; return new DVarValue(astype, vd, val, true); } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // ASSIGNMENT HELPER (store this in that) ////////////////////////////////////////////////////////////////////////////////////////*/ void DtoAssign(Loc& loc, DValue* lhs, DValue* rhs) { Logger::cout() << "DtoAssign(...);\n"; LOG_SCOPE; Type* t = DtoDType(lhs->getType()); Type* t2 = DtoDType(rhs->getType()); if (t->ty == Tstruct) { if (!t->equals(t2)) { // TODO: fix this, use 'rhs' for something DtoAggrZeroInit(lhs->getLVal()); } else if (!rhs->inPlace()) { DtoAggrCopy(lhs->getLVal(), rhs->getRVal()); } } else if (t->ty == Tarray) { // lhs is slice if (DSliceValue* s = lhs->isSlice()) { if (DSliceValue* s2 = rhs->isSlice()) { DtoArrayCopySlices(s, s2); } else if (t->next->toBasetype()->equals(t2)) { DtoArrayInit(loc, s, rhs); } else { DtoArrayCopyToSlice(s, rhs); } } // rhs is slice else if (DSliceValue* s = rhs->isSlice()) { assert(s->getType()->toBasetype() == lhs->getType()->toBasetype()); DtoSetArray(lhs->getLVal(),DtoArrayLen(s),DtoArrayPtr(s)); } // null else if (rhs->isNull()) { DtoSetArrayToNull(lhs->getLVal()); } // reference assignment else { DtoArrayAssign(lhs->getLVal(), rhs->getRVal()); } } else if (t->ty == Tsarray) { if (DtoType(lhs->getType()) == DtoType(rhs->getType())) { DtoStaticArrayCopy(lhs->getLVal(), rhs->getRVal()); } else { DtoArrayInit(loc, lhs, rhs); } } else if (t->ty == Tdelegate) { if (rhs->isNull()) DtoAggrZeroInit(lhs->getLVal()); else if (!rhs->inPlace()) { LLValue* l = lhs->getLVal(); LLValue* r = rhs->getRVal(); Logger::cout() << "assign\nlhs: " << *l << "rhs: " << *r << '\n'; DtoAggrCopy(l, r); } } else if (t->ty == Tclass) { assert(t2->ty == Tclass); LLValue* l = lhs->getLVal(); LLValue* r = rhs->getRVal(); Logger::cout() << "l : " << *l << '\n'; Logger::cout() << "r : " << *r << '\n'; r = DtoBitCast(r, l->getType()->getContainedType(0)); DtoStore(r, l); } else if (t->iscomplex()) { assert(!lhs->isComplex()); LLValue* dst; if (DLRValue* lr = lhs->isLRValue()) { dst = lr->getLVal(); rhs = DtoCastComplex(loc, rhs, lr->getLType()); } else { dst = lhs->getRVal(); } if (DComplexValue* cx = rhs->isComplex()) DtoComplexSet(dst, cx->re, cx->im); else DtoComplexAssign(dst, rhs->getRVal()); } else { LLValue* l = lhs->getLVal(); LLValue* r = rhs->getRVal(); Logger::cout() << "assign\nlhs: " << *l << "rhs: " << *r << '\n'; const LLType* lit = l->getType()->getContainedType(0); if (r->getType() != lit) { // handle lvalue cast assignments if (DLRValue* lr = lhs->isLRValue()) { Logger::println("lvalue cast!"); r = DtoCast(loc, rhs, lr->getLType())->getRVal(); } else { r = DtoCast(loc, rhs, lhs->getType())->getRVal(); } Logger::cout() << "really assign\nlhs: " << *l << "rhs: " << *r << '\n'; assert(r->getType() == l->getType()->getContainedType(0)); } gIR->ir->CreateStore(r, l); } } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // NULL VALUE HELPER ////////////////////////////////////////////////////////////////////////////////////////*/ DValue* DtoNullValue(Type* type) { Type* basetype = type->toBasetype(); TY basety = basetype->ty; const LLType* lltype = DtoType(basetype); // complex, needs to be first since complex are also floating if (basetype->iscomplex()) { const LLType* basefp = DtoComplexBaseType(basetype); return new DComplexValue(type, LLConstant::getNullValue(basefp), LLConstant::getNullValue(basefp)); } // integer, floating, pointer and class have no special representation else if (basetype->isintegral() || basetype->isfloating() || basety == Tpointer || basety == Tclass) { return new DConstValue(type, LLConstant::getNullValue(lltype)); } // dynamic array else if (basety == Tarray) { LLValue* len = DtoConstSize_t(0); LLValue* ptr = getNullPtr(getPtrToType(DtoType(basetype->next))); return new DSliceValue(type, len, ptr); } // delegate else if (basety == Tdelegate) { return new DNullValue(type, LLConstant::getNullValue(lltype)); } // unknown std::cout << "unsupported: null value for " << type->toChars() << '\n'; assert(0); return 0; } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // CASTING HELPERS ////////////////////////////////////////////////////////////////////////////////////////*/ DValue* DtoCastInt(Loc& loc, DValue* val, Type* _to) { const LLType* tolltype = DtoType(_to); Type* to = DtoDType(_to); Type* from = DtoDType(val->getType()); assert(from->isintegral()); size_t fromsz = from->size(); size_t tosz = to->size(); LLValue* rval = val->getRVal(); if (rval->getType() == tolltype) { return new DImValue(_to, rval); } if (to->isintegral()) { if (fromsz < tosz) { Logger::cout() << "cast to: " << *tolltype << '\n'; if (from->isunsigned() || from->ty == Tbool) { rval = new llvm::ZExtInst(rval, tolltype, "tmp", gIR->scopebb()); } else { rval = new llvm::SExtInst(rval, tolltype, "tmp", gIR->scopebb()); } } else if (fromsz > tosz) { rval = new llvm::TruncInst(rval, tolltype, "tmp", gIR->scopebb()); } else { rval = DtoBitCast(rval, tolltype); } } else if (to->iscomplex()) { return DtoComplex(loc, to, val); } else if (to->isfloating()) { if (from->isunsigned()) { rval = new llvm::UIToFPInst(rval, tolltype, "tmp", gIR->scopebb()); } else { rval = new llvm::SIToFPInst(rval, tolltype, "tmp", gIR->scopebb()); } } else if (to->ty == Tpointer) { Logger::cout() << "cast pointer: " << *tolltype << '\n'; rval = gIR->ir->CreateIntToPtr(rval, tolltype, "tmp"); } else { error(loc, "invalid cast from '%s' to '%s'", val->getType()->toChars(), _to->toChars()); fatal(); } return new DImValue(_to, rval); } DValue* DtoCastPtr(Loc& loc, DValue* val, Type* to) { const LLType* tolltype = DtoType(to); Type* totype = DtoDType(to); Type* fromtype = DtoDType(val->getType()); assert(fromtype->ty == Tpointer || fromtype->ty == Tfunction); LLValue* rval; if (totype->ty == Tpointer || totype->ty == Tclass) { LLValue* src = val->getRVal(); Logger::cout() << "src: " << *src << "to type: " << *tolltype << '\n'; rval = DtoBitCast(src, tolltype); } else if (totype->isintegral()) { rval = new llvm::PtrToIntInst(val->getRVal(), tolltype, "tmp", gIR->scopebb()); } else { error(loc, "invalid cast from '%s' to '%s'", val->getType()->toChars(), to->toChars()); fatal(); } return new DImValue(to, rval); } DValue* DtoCastFloat(Loc& loc, DValue* val, Type* to) { if (val->getType() == to) return val; const LLType* tolltype = DtoType(to); Type* totype = DtoDType(to); Type* fromtype = DtoDType(val->getType()); assert(fromtype->isfloating()); size_t fromsz = fromtype->size(); size_t tosz = totype->size(); LLValue* rval; if (totype->iscomplex()) { return DtoComplex(loc, to, val); } else if (totype->isfloating()) { if (fromsz == tosz) { rval = val->getRVal(); assert(rval->getType() == tolltype); } else if (fromsz < tosz) { rval = new llvm::FPExtInst(val->getRVal(), tolltype, "tmp", gIR->scopebb()); } else if (fromsz > tosz) { rval = new llvm::FPTruncInst(val->getRVal(), tolltype, "tmp", gIR->scopebb()); } else { error(loc, "invalid cast from '%s' to '%s'", val->getType()->toChars(), to->toChars()); fatal(); } } else if (totype->isintegral()) { if (totype->isunsigned()) { rval = new llvm::FPToUIInst(val->getRVal(), tolltype, "tmp", gIR->scopebb()); } else { rval = new llvm::FPToSIInst(val->getRVal(), tolltype, "tmp", gIR->scopebb()); } } else { error(loc, "invalid cast from '%s' to '%s'", val->getType()->toChars(), to->toChars()); fatal(); } return new DImValue(to, rval); } DValue* DtoCastDelegate(Loc& loc, DValue* val, Type* to) { LLValue* res = 0; to = to->toBasetype(); if (to->ty == Tdelegate) { const LLType* toll = getPtrToType(DtoType(to)); res = DtoBitCast(val->getRVal(), toll); } else { error(loc, "invalid cast from '%s' to '%s'", val->getType()->toChars(), to->toChars()); fatal(); } return new DImValue(to, res); } DValue* DtoCast(Loc& loc, DValue* val, Type* to) { Type* fromtype = DtoDType(val->getType()); Logger::println("Casting from '%s' to '%s'", fromtype->toChars(), to->toChars()); if (fromtype->isintegral()) { return DtoCastInt(loc, val, to); } else if (fromtype->iscomplex()) { return DtoCastComplex(loc, val, to); } else if (fromtype->isfloating()) { return DtoCastFloat(loc, val, to); } else if (fromtype->ty == Tclass) { return DtoCastClass(val, to); } else if (fromtype->ty == Tarray || fromtype->ty == Tsarray) { return DtoCastArray(loc, val, to); } else if (fromtype->ty == Tpointer || fromtype->ty == Tfunction) { return DtoCastPtr(loc, val, to); } else if (fromtype->ty == Tdelegate) { return DtoCastDelegate(loc, val, to); } else { error(loc, "invalid cast from '%s' to '%s'", val->getType()->toChars(), to->toChars()); fatal(); } } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // TEMPLATE HELPERS ////////////////////////////////////////////////////////////////////////////////////////*/ bool DtoIsTemplateInstance(Dsymbol* s) { if (!s) return false; if (s->isTemplateInstance() && !s->isTemplateMixin()) return true; else if (s->parent) return DtoIsTemplateInstance(s->parent); return false; } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // LAZY STATIC INIT HELPER ////////////////////////////////////////////////////////////////////////////////////////*/ void DtoLazyStaticInit(bool istempl, LLValue* gvar, Initializer* init, Type* t) { // create a flag to make sure initialization only happens once llvm::GlobalValue::LinkageTypes gflaglink = istempl ? llvm::GlobalValue::WeakLinkage : llvm::GlobalValue::InternalLinkage; std::string gflagname(gvar->getName()); gflagname.append("__initflag"); llvm::GlobalVariable* gflag = new llvm::GlobalVariable(LLType::Int1Ty,false,gflaglink,DtoConstBool(false),gflagname,gIR->module); // check flag and do init if not already done llvm::BasicBlock* oldend = gIR->scopeend(); llvm::BasicBlock* initbb = llvm::BasicBlock::Create("ifnotinit",gIR->topfunc(),oldend); llvm::BasicBlock* endinitbb = llvm::BasicBlock::Create("ifnotinitend",gIR->topfunc(),oldend); LLValue* cond = gIR->ir->CreateICmpEQ(gIR->ir->CreateLoad(gflag,"tmp"),DtoConstBool(false)); gIR->ir->CreateCondBr(cond, initbb, endinitbb); gIR->scope() = IRScope(initbb,endinitbb); DValue* ie = DtoInitializer(init); if (!ie->inPlace()) { DValue* dst = new DVarValue(t, gvar, true); DtoAssign(init->loc, dst, ie); } gIR->ir->CreateStore(DtoConstBool(true), gflag); gIR->ir->CreateBr(endinitbb); gIR->scope() = IRScope(endinitbb,oldend); } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // PROCESSING QUEUE HELPERS ////////////////////////////////////////////////////////////////////////////////////////*/ void DtoResolveDsymbol(Dsymbol* dsym) { if (StructDeclaration* sd = dsym->isStructDeclaration()) { DtoResolveStruct(sd); } else if (ClassDeclaration* cd = dsym->isClassDeclaration()) { DtoResolveClass(cd); } else if (FuncDeclaration* fd = dsym->isFuncDeclaration()) { DtoResolveFunction(fd); } else if (TypeInfoDeclaration* fd = dsym->isTypeInfoDeclaration()) { DtoResolveTypeInfo(fd); } else { error(dsym->loc, "unsupported dsymbol: %s", dsym->toChars()); assert(0 && "unsupported dsymbol for DtoResolveDsymbol"); } } ////////////////////////////////////////////////////////////////////////////////////////// void DtoDeclareDsymbol(Dsymbol* dsym) { if (StructDeclaration* sd = dsym->isStructDeclaration()) { DtoDeclareStruct(sd); } else if (ClassDeclaration* cd = dsym->isClassDeclaration()) { DtoDeclareClass(cd); } else if (FuncDeclaration* fd = dsym->isFuncDeclaration()) { DtoDeclareFunction(fd); } else if (TypeInfoDeclaration* fd = dsym->isTypeInfoDeclaration()) { DtoDeclareTypeInfo(fd); } else { error(dsym->loc, "unsupported dsymbol: %s", dsym->toChars()); assert(0 && "unsupported dsymbol for DtoDeclareDsymbol"); } } ////////////////////////////////////////////////////////////////////////////////////////// void DtoConstInitDsymbol(Dsymbol* dsym) { if (StructDeclaration* sd = dsym->isStructDeclaration()) { DtoConstInitStruct(sd); } else if (ClassDeclaration* cd = dsym->isClassDeclaration()) { DtoConstInitClass(cd); } else if (TypeInfoDeclaration* fd = dsym->isTypeInfoDeclaration()) { DtoConstInitTypeInfo(fd); } else if (VarDeclaration* vd = dsym->isVarDeclaration()) { DtoConstInitGlobal(vd); } else { error(dsym->loc, "unsupported dsymbol: %s", dsym->toChars()); assert(0 && "unsupported dsymbol for DtoConstInitDsymbol"); } } ////////////////////////////////////////////////////////////////////////////////////////// void DtoDefineDsymbol(Dsymbol* dsym) { if (StructDeclaration* sd = dsym->isStructDeclaration()) { DtoDefineStruct(sd); } else if (ClassDeclaration* cd = dsym->isClassDeclaration()) { DtoDefineClass(cd); } else if (FuncDeclaration* fd = dsym->isFuncDeclaration()) { DtoDefineFunc(fd); } else if (TypeInfoDeclaration* fd = dsym->isTypeInfoDeclaration()) { DtoDefineTypeInfo(fd); } else { error(dsym->loc, "unsupported dsymbol: %s", dsym->toChars()); assert(0 && "unsupported dsymbol for DtoDefineDsymbol"); } } ////////////////////////////////////////////////////////////////////////////////////////// void DtoConstInitGlobal(VarDeclaration* vd) { if (vd->ir.initialized) return; vd->ir.initialized = gIR->dmodule; Logger::println("* DtoConstInitGlobal(%s)", vd->toChars()); LOG_SCOPE; bool emitRTstaticInit = false; LLConstant* _init = 0; if (vd->parent && vd->parent->isFuncDeclaration() && vd->init && vd->init->isExpInitializer()) { _init = DtoConstInitializer(vd->type, NULL); emitRTstaticInit = true; } else { _init = DtoConstInitializer(vd->type, vd->init); } const LLType* _type = DtoType(vd->type); Type* t = DtoDType(vd->type); //Logger::cout() << "initializer: " << *_init << '\n'; if (_type != _init->getType()) { Logger::cout() << "got type '" << *_init->getType() << "' expected '" << *_type << "'\n"; // zero initalizer if (_init->isNullValue()) _init = llvm::Constant::getNullValue(_type); // pointer to global constant (struct.init) else if (llvm::isa<llvm::GlobalVariable>(_init)) { assert(_init->getType()->getContainedType(0) == _type); llvm::GlobalVariable* gv = llvm::cast<llvm::GlobalVariable>(_init); assert(t->ty == Tstruct); TypeStruct* ts = (TypeStruct*)t; assert(ts->sym->ir.irStruct->constInit); _init = ts->sym->ir.irStruct->constInit; } // array single value init else if (isaArray(_type)) { _init = DtoConstStaticArray(_type, _init); } else { Logger::cout() << "Unexpected initializer type: " << *_type << '\n'; //assert(0); } } bool istempl = false; if ((vd->storage_class & STCcomdat) || (vd->parent && DtoIsTemplateInstance(vd->parent))) { istempl = true; } if (_init && _init->getType() != _type) _type = _init->getType(); llvm::cast<LLOpaqueType>(vd->ir.irGlobal->type.get())->refineAbstractTypeTo(_type); _type = vd->ir.irGlobal->type.get(); //_type->dump(); assert(!_type->isAbstract()); llvm::GlobalVariable* gvar = llvm::cast<llvm::GlobalVariable>(vd->ir.irGlobal->value); if (!(vd->storage_class & STCextern) && (vd->getModule() == gIR->dmodule || istempl)) { gvar->setInitializer(_init); // do debug info if (global.params.symdebug) { LLGlobalVariable* gv = DtoDwarfGlobalVariable(gvar, vd); // keep a reference so GDCE doesn't delete it ! gIR->usedArray.push_back(llvm::ConstantExpr::getBitCast(gv, getVoidPtrType())); } } if (emitRTstaticInit) DtoLazyStaticInit(istempl, gvar, vd->init, t); } ////////////////////////////////////////////////////////////////////////////////////////// void DtoEmptyResolveList() { //Logger::println("DtoEmptyResolveList()"); Dsymbol* dsym; while (!gIR->resolveList.empty()) { dsym = gIR->resolveList.front(); gIR->resolveList.pop_front(); DtoResolveDsymbol(dsym); } } ////////////////////////////////////////////////////////////////////////////////////////// void DtoEmptyDeclareList() { //Logger::println("DtoEmptyDeclareList()"); Dsymbol* dsym; while (!gIR->declareList.empty()) { dsym = gIR->declareList.front(); gIR->declareList.pop_front(); DtoDeclareDsymbol(dsym); } } ////////////////////////////////////////////////////////////////////////////////////////// void DtoEmptyConstInitList() { //Logger::println("DtoEmptyConstInitList()"); Dsymbol* dsym; while (!gIR->constInitList.empty()) { dsym = gIR->constInitList.front(); gIR->constInitList.pop_front(); DtoConstInitDsymbol(dsym); } } ////////////////////////////////////////////////////////////////////////////////////////// void DtoEmptyDefineList() { //Logger::println("DtoEmptyDefineList()"); Dsymbol* dsym; while (!gIR->defineList.empty()) { dsym = gIR->defineList.front(); gIR->defineList.pop_front(); DtoDefineDsymbol(dsym); } } ////////////////////////////////////////////////////////////////////////////////////////// void DtoEmptyAllLists() { for(;;) { Dsymbol* dsym; if (!gIR->resolveList.empty()) { dsym = gIR->resolveList.front(); gIR->resolveList.pop_front(); DtoResolveDsymbol(dsym); } else if (!gIR->declareList.empty()) { dsym = gIR->declareList.front(); gIR->declareList.pop_front(); DtoDeclareDsymbol(dsym); } else if (!gIR->constInitList.empty()) { dsym = gIR->constInitList.front(); gIR->constInitList.pop_front(); DtoConstInitDsymbol(dsym); } else if (!gIR->defineList.empty()) { dsym = gIR->defineList.front(); gIR->defineList.pop_front(); DtoDefineDsymbol(dsym); } else { break; } } } ////////////////////////////////////////////////////////////////////////////////////////// void DtoForceDeclareDsymbol(Dsymbol* dsym) { if (dsym->ir.declared) return; Logger::println("DtoForceDeclareDsymbol(%s)", dsym->toPrettyChars()); LOG_SCOPE; DtoResolveDsymbol(dsym); DtoEmptyResolveList(); DtoDeclareDsymbol(dsym); } ////////////////////////////////////////////////////////////////////////////////////////// void DtoForceConstInitDsymbol(Dsymbol* dsym) { if (dsym->ir.initialized) return; Logger::println("DtoForceConstInitDsymbol(%s)", dsym->toPrettyChars()); LOG_SCOPE; DtoResolveDsymbol(dsym); DtoEmptyResolveList(); DtoEmptyDeclareList(); DtoConstInitDsymbol(dsym); } ////////////////////////////////////////////////////////////////////////////////////////// void DtoForceDefineDsymbol(Dsymbol* dsym) { if (dsym->ir.defined) return; Logger::println("DtoForceDefineDsymbol(%s)", dsym->toPrettyChars()); LOG_SCOPE; DtoResolveDsymbol(dsym); DtoEmptyResolveList(); DtoEmptyDeclareList(); DtoEmptyConstInitList(); DtoDefineDsymbol(dsym); } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // DECLARATION EXP HELPER ////////////////////////////////////////////////////////////////////////////////////////*/ DValue* DtoDeclarationExp(Dsymbol* declaration) { Logger::print("DtoDeclarationExp: %s\n", declaration->toChars()); LOG_SCOPE; // variable declaration if (VarDeclaration* vd = declaration->isVarDeclaration()) { Logger::println("VarDeclaration"); // static if (vd->isDataseg()) { vd->toObjFile(0); // TODO: multiobj } else { if (global.params.llvmAnnotate) DtoAnnotation(declaration->toChars()); Logger::println("vdtype = %s", vd->type->toChars()); // referenced by nested delegate? if (vd->nestedref) { Logger::println("has nestedref set"); assert(vd->ir.irLocal); vd->ir.irLocal->value = gIR->func()->decl->ir.irFunc->nestedVar; assert(vd->ir.irLocal->value); assert(vd->ir.irLocal->nestedIndex >= 0); } // normal stack variable, allocate storage on the stack if it has not already been done else if(!vd->ir.irLocal) { const LLType* lltype = DtoType(vd->type); llvm::Value* allocainst; if(gTargetData->getTypeSizeInBits(lltype) == 0) allocainst = llvm::ConstantPointerNull::get(getPtrToType(lltype)); else allocainst = new llvm::AllocaInst(lltype, vd->toChars(), gIR->topallocapoint()); //allocainst->setAlignment(vd->type->alignsize()); // TODO vd->ir.irLocal = new IrLocal(vd); vd->ir.irLocal->value = allocainst; if (global.params.symdebug) { DtoDwarfLocalVariable(allocainst, vd); } } Logger::cout() << "llvm value for decl: " << *vd->ir.irLocal->value << '\n'; DValue* ie = DtoInitializer(vd->init); } return new DVarValue(vd->type, vd, vd->ir.getIrValue(), true); } // struct declaration else if (StructDeclaration* s = declaration->isStructDeclaration()) { Logger::println("StructDeclaration"); DtoForceConstInitDsymbol(s); } // function declaration else if (FuncDeclaration* f = declaration->isFuncDeclaration()) { Logger::println("FuncDeclaration"); DtoForceDeclareDsymbol(f); } // alias declaration else if (AliasDeclaration* a = declaration->isAliasDeclaration()) { Logger::println("AliasDeclaration - no work"); // do nothing } // enum else if (EnumDeclaration* e = declaration->isEnumDeclaration()) { Logger::println("EnumDeclaration - no work"); // do nothing } // class else if (ClassDeclaration* e = declaration->isClassDeclaration()) { Logger::println("ClassDeclaration"); DtoForceConstInitDsymbol(e); } // typedef else if (TypedefDeclaration* tdef = declaration->isTypedefDeclaration()) { Logger::println("TypedefDeclaration"); DtoTypeInfoOf(tdef->type, false); } // attribute declaration else if (AttribDeclaration* a = declaration->isAttribDeclaration()) { Logger::println("AttribDeclaration"); for (int i=0; i < a->decl->dim; ++i) { DtoForceDeclareDsymbol((Dsymbol*)a->decl->data[i]); } } // mixin declaration else if (TemplateMixin* m = declaration->isTemplateMixin()) { Logger::println("TemplateMixin"); for (int i=0; i < m->members->dim; ++i) { Dsymbol* mdsym = (Dsymbol*)m->members->data[i]; DtoDeclarationExp(mdsym); } } // unsupported declaration else { error(declaration->loc, "Unimplemented Declaration type for DeclarationExp. kind: %s", declaration->kind()); assert(0); } return NULL; } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // INITIALIZER HELPERS ////////////////////////////////////////////////////////////////////////////////////////*/ LLConstant* DtoConstInitializer(Type* type, Initializer* init) { LLConstant* _init = 0; // may return zero if (!init) { Logger::println("const default initializer for %s", type->toChars()); if(type->ty == Tsarray) { Logger::println("type is a static array, building constant array initializer"); TypeSArray* arrtype = (TypeSArray*)type; Type* elemtype = type->next; integer_t arraydim; arraydim = arrtype->dim->toInteger(); std::vector<LLConstant*> inits(arraydim, elemtype->defaultInit()->toConstElem(gIR)); const LLArrayType* arrty = LLArrayType::get(DtoType(elemtype),arraydim); _init = LLConstantArray::get(arrty, inits); } else _init = type->defaultInit()->toConstElem(gIR); } else if (ExpInitializer* ex = init->isExpInitializer()) { Logger::println("const expression initializer"); _init = ex->exp->toConstElem(gIR); } else if (StructInitializer* si = init->isStructInitializer()) { Logger::println("const struct initializer"); _init = DtoConstStructInitializer(si); } else if (ArrayInitializer* ai = init->isArrayInitializer()) { Logger::println("const array initializer"); _init = DtoConstArrayInitializer(ai); } else if (init->isVoidInitializer()) { Logger::println("const void initializer"); const LLType* ty = DtoType(type); _init = llvm::Constant::getNullValue(ty); } else { Logger::println("unsupported const initializer: %s", init->toChars()); } return _init; } ////////////////////////////////////////////////////////////////////////////////////////// LLConstant* DtoConstFieldInitializer(Type* t, Initializer* init) { Logger::println("DtoConstFieldInitializer"); LOG_SCOPE; const LLType* _type = DtoType(t); LLConstant* _init = DtoConstInitializer(t, init); assert(_init); if (_type != _init->getType()) { Logger::cout() << "field init is: " << *_init << " type should be " << *_type << '\n'; if (t->ty == Tsarray) { const LLArrayType* arrty = isaArray(_type); uint64_t n = arrty->getNumElements(); std::vector<LLConstant*> vals(n,_init); _init = llvm::ConstantArray::get(arrty, vals); } else if (t->ty == Tarray) { assert(isaStruct(_type)); _init = llvm::ConstantAggregateZero::get(_type); } else if (t->ty == Tstruct) { const LLStructType* structty = isaStruct(_type); TypeStruct* ts = (TypeStruct*)t; assert(ts); assert(ts->sym); assert(ts->sym->ir.irStruct->constInit); _init = ts->sym->ir.irStruct->constInit; } else if (t->ty == Tclass) { _init = llvm::Constant::getNullValue(_type); } else { Logger::println("failed for type %s", t->toChars()); assert(0); } } return _init; } ////////////////////////////////////////////////////////////////////////////////////////// DValue* DtoInitializer(Initializer* init) { if (!init) return 0; else if (ExpInitializer* ex = init->isExpInitializer()) { Logger::println("expression initializer"); assert(ex->exp); return ex->exp->toElem(gIR); } else if (init->isVoidInitializer()) { // do nothing } else { Logger::println("unsupported initializer: %s", init->toChars()); assert(0); } return 0; } ////////////////////////////////////////////////////////////////////////////////////////// void DtoAnnotation(const char* str) { std::string s("CODE: "); s.append(str); char* p = &s[0]; while (*p) { if (*p == '"') *p = '\''; ++p; } // create a noop with the code as the result name! gIR->ir->CreateAnd(DtoConstSize_t(0),DtoConstSize_t(0),s.c_str()); } ////////////////////////////////////////////////////////////////////////////////////////// LLConstant* DtoTypeInfoOf(Type* type, bool base) { type = type->merge(); // needed.. getTypeInfo does the same type->getTypeInfo(NULL); TypeInfoDeclaration* tidecl = type->vtinfo; assert(tidecl); DtoForceDeclareDsymbol(tidecl); assert(tidecl->ir.irGlobal != NULL); LLConstant* c = isaConstant(tidecl->ir.irGlobal->value); assert(c != NULL); if (base) return llvm::ConstantExpr::getBitCast(c, DtoType(Type::typeinfo->type)); return c; } ////////////////////////////////////////////////////////////////////////////////////////// void findDefaultTarget() { std::string err_str; const llvm::TargetMachineRegistry::entry* e = llvm::TargetMachineRegistry::getClosestTargetForJIT(err_str); if (e == 0) { error("Failed to find a default target machine: %s", err_str.c_str()); fatal(); } else { global.params.llvmArch = const_cast<char*>(e->Name); } } ////////////////////////////////////////////////////////////////////////////////////////// LLValue* DtoBoolean(Loc& loc, DValue* dval) { Type* dtype = dval->getType()->toBasetype(); TY ty = dtype->ty; // integer if (dtype->isintegral()) { LLValue* val = dval->getRVal(); if (val->getType() == LLType::Int1Ty) return val; else { LLValue* zero = LLConstantInt::get(val->getType(), 0, false); return gIR->ir->CreateICmpNE(val, zero, "tmp"); } } // complex else if (dtype->iscomplex()) { return DtoComplexEquals(loc, TOKnotequal, dval, DtoNullValue(dtype)); } // floating point else if (dtype->isfloating()) { LLValue* val = dval->getRVal(); LLValue* zero = LLConstant::getNullValue(val->getType()); return gIR->ir->CreateFCmpONE(val, zero, "tmp"); } // pointer/class else if (ty == Tpointer || ty == Tclass) { LLValue* val = dval->getRVal(); LLValue* zero = LLConstant::getNullValue(val->getType()); Logger::cout() << "val: " << *val << '\n'; Logger::cout() << "zero: " << *zero << '\n'; return gIR->ir->CreateICmpNE(val, zero, "tmp"); } // dynamic array else if (ty == Tarray) { // return (arr.length != 0) return gIR->ir->CreateICmpNE(DtoArrayLen(dval), DtoConstSize_t(0), "tmp"); } // delegate else if (ty == Tdelegate) { // return (dg !is null) return DtoDelegateEquals(TOKnotequal, dval->getRVal(), NULL); } // unknown std::cout << "unsupported -> bool : " << dtype->toChars() << '\n'; assert(0); return 0; }