Mercurial > projects > ldc
view gen/llvmhelpers.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 | 8f121883bce8 |
children |
line wrap: on
line source
#include "gen/llvmhelpers.h" #include "gen/llvm.h" #include "mars.h" #include "init.h" #include "id.h" #include "expression.h" #include "template.h" #include "module.h" #include "gen/tollvm.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" #include "gen/cl_options.h" #include "gen/nested.h" #include "ir/irmodule.h" #include <stack> /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // 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").getInstruction(); // 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()); } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // ALLOCA HELPERS ////////////////////////////////////////////////////////////////////////////////////////*/ llvm::AllocaInst* DtoAlloca(Type* type, const char* name) { const llvm::Type* lltype = DtoType(type); llvm::AllocaInst* ai = new llvm::AllocaInst(lltype, name, gIR->topallocapoint()); ai->setAlignment(type->alignsize()); return ai; } llvm::AllocaInst* DtoArrayAlloca(Type* type, unsigned arraysize, const char* name) { const llvm::Type* lltype = DtoType(type); llvm::AllocaInst* ai = new llvm::AllocaInst( lltype, DtoConstUint(arraysize), name, gIR->topallocapoint()); ai->setAlignment(type->alignsize()); return ai; } llvm::AllocaInst* DtoRawAlloca(const llvm::Type* lltype, size_t alignment, const char* name) { llvm::AllocaInst* ai = new llvm::AllocaInst(lltype, name, gIR->topallocapoint()); if (alignment) ai->setAlignment(alignment); return ai; } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // ASSERT HELPER ////////////////////////////////////////////////////////////////////////////////////////*/ void DtoAssert(Module* M, Loc loc, DValue* msg) { std::vector<LLValue*> args; // func const char* fname = msg ? "_d_assert_msg" : "_d_assert"; llvm::Function* fn = LLVM_D_GetRuntimeFunction(gIR->module, fname); // msg param if (msg) { args.push_back(msg->getRVal()); } // file param // we might be generating for an imported template function const char* cur_file = M->srcfile->name->toChars(); if (loc.filename && strcmp(loc.filename, cur_file) != 0) { args.push_back(DtoConstString(loc.filename)); } else { IrModule* irmod = getIrModule(M); args.push_back(DtoLoad(irmod->fileName)); } // line param LLConstant* c = DtoConstUint(loc.linnum); args.push_back(c); // call gIR->CreateCallOrInvoke(fn, args.begin(), args.end()); #ifndef DISABLE_DEBUG_INFO // end debug info if (global.params.symdebug) DtoDwarfFuncEnd(gIR->func()->decl); #endif // 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, TryFinallyStatement* sourceFinally) { 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()->gen->getScopedLabelName(target->toChars()); llvm::BasicBlock*& targetBB = gIR->func()->gen->labelToBB[labelname]; if (targetBB == NULL) targetBB = llvm::BasicBlock::Create(gIR->context(), "label_" + labelname, gIR->topfunc()); // emit code for finallys between goto and label DtoEnclosingHandlers(loc, lblstmt); // goto into finally blocks is forbidden by the spec // but should work fine if(lblstmt->enclosingFinally != sourceFinally) { error(loc, "spec disallows goto into or out of finally block"); fatal(); } llvm::BranchInst::Create(targetBB, gIR->scopebb()); } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // TRY-FINALLY, VOLATILE AND SYNCHRONIZED HELPER ////////////////////////////////////////////////////////////////////////////////////////*/ void EnclosingSynchro::emitCode(IRState * p) { if (s->exp) DtoLeaveMonitor(s->exp->toElem(p)->getRVal()); else DtoLeaveCritical(s->llsync); } //////////////////////////////////////////////////////////////////////////////////////// void EnclosingVolatile::emitCode(IRState * p) { // store-load barrier DtoMemoryBarrier(false, false, true, false); } //////////////////////////////////////////////////////////////////////////////////////// void EnclosingTryFinally::emitCode(IRState * p) { if (tf->finalbody) { llvm::BasicBlock* oldpad = p->func()->gen->landingPad; p->func()->gen->landingPad = landingPad; tf->finalbody->toIR(p); p->func()->gen->landingPad = oldpad; } } //////////////////////////////////////////////////////////////////////////////////////// void DtoEnclosingHandlers(Loc loc, Statement* target) { // labels are a special case: they are not required to enclose the current scope // for them we use the enclosing scope handler as a reference point LabelStatement* lblstmt = target ? target->isLabelStatement() : 0; if (lblstmt) target = lblstmt->enclosingScopeExit; // figure out up until what handler we need to emit FuncGen::TargetScopeVec::reverse_iterator targetit = gIR->func()->gen->targetScopes.rbegin(); FuncGen::TargetScopeVec::reverse_iterator it_end = gIR->func()->gen->targetScopes.rend(); while(targetit != it_end) { if (targetit->s == target) { break; } ++targetit; } if (target && targetit == it_end) { if (lblstmt) error(loc, "cannot goto into try, volatile or synchronized statement at %s", target->loc.toChars()); else error(loc, "internal error, cannot find jump path to statement at %s", target->loc.toChars()); return; } // // emit code for enclosing handlers // // since the labelstatements possibly inside are private // and might already exist push a label scope gIR->func()->gen->pushUniqueLabelScope("enclosing"); FuncGen::TargetScopeVec::reverse_iterator it = gIR->func()->gen->targetScopes.rbegin(); while (it != targetit) { if (it->enclosinghandler) it->enclosinghandler->emitCode(gIR); ++it; } gIR->func()->gen->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); } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // ASSIGNMENT HELPER (store this in that) ////////////////////////////////////////////////////////////////////////////////////////*/ // is this a good approach at all ? void DtoAssign(Loc& loc, DValue* lhs, DValue* rhs) { Logger::println("DtoAssign(...);\n"); LOG_SCOPE; Type* t = lhs->getType()->toBasetype(); Type* t2 = rhs->getType()->toBasetype(); if (t->ty == Tstruct) { if (!t->equals(t2)) { // FIXME: use 'rhs' for something !?! DtoAggrZeroInit(lhs->getLVal()); } else { 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->nextOf()->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 if (t2->ty == Tarray) { DtoStore(rhs->getRVal(), lhs->getLVal()); } // some implicitly converting ref assignment else { DtoSetArray(lhs->getLVal(), DtoArrayLen(rhs), DtoArrayPtr(rhs)); } } else if (t->ty == Tsarray) { // T[n] = T[n] if (DtoType(lhs->getType()) == DtoType(rhs->getType())) { DtoStaticArrayCopy(lhs->getLVal(), rhs->getRVal()); } // T[n] = T else if (t->nextOf()->toBasetype()->equals(t2)) { DtoArrayInit(loc, lhs, rhs); } // T[n] = T[] - generally only generated by frontend in rare cases else if (t2->ty == Tarray && t->nextOf()->toBasetype()->equals(t2->nextOf()->toBasetype())) { DtoMemCpy(lhs->getLVal(), DtoArrayPtr(rhs), DtoArrayLen(rhs)); } else { assert(0 && "Unimplemented static array assign!"); } } else if (t->ty == Tdelegate) { LLValue* l = lhs->getLVal(); LLValue* r = rhs->getRVal(); if (Logger::enabled()) Logger::cout() << "assign\nlhs: " << *l << "rhs: " << *r << '\n'; DtoStore(r, l); } else if (t->ty == Tclass) { assert(t2->ty == Tclass); LLValue* l = lhs->getLVal(); LLValue* r = rhs->getRVal(); if (Logger::enabled()) { Logger::cout() << "l : " << *l << '\n'; Logger::cout() << "r : " << *r << '\n'; } r = DtoBitCast(r, l->getType()->getContainedType(0)); DtoStore(r, l); } else if (t->iscomplex()) { LLValue* dst = lhs->getLVal(); LLValue* src = DtoCast(loc, rhs, lhs->getType())->getRVal(); DtoStore(src, dst); } else { LLValue* l = lhs->getLVal(); LLValue* r = rhs->getRVal(); if (Logger::enabled()) Logger::cout() << "assign\nlhs: " << *l << "rhs: " << *r << '\n'; const LLType* lit = l->getType()->getContainedType(0); if (r->getType() != lit) { r = DtoCast(loc, rhs, lhs->getType())->getRVal(); if (Logger::enabled()) 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); LLValue* res = DtoAggrPair(DtoType(type), LLConstant::getNullValue(basefp), LLConstant::getNullValue(basefp)); return new DImValue(type, res); } // 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->nextOf()))); return new DSliceValue(type, len, ptr); } // delegate else if (basety == Tdelegate) { return new DNullValue(type, LLConstant::getNullValue(lltype)); } // unknown error("unsupported: null value for %s", type->toChars()); assert(0); return 0; } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // CASTING HELPERS ////////////////////////////////////////////////////////////////////////////////////////*/ DValue* DtoCastInt(Loc& loc, DValue* val, Type* _to) { const LLType* tolltype = DtoType(_to); Type* to = _to->toBasetype(); Type* from = val->getType()->toBasetype(); 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->ty == Tbool) { LLValue* zero = LLConstantInt::get(rval->getType(), 0, false); rval = gIR->ir->CreateICmpNE(rval, zero, "tmp"); } else if (to->isintegral()) { if (fromsz < tosz || from->ty == Tbool) { if (Logger::enabled()) 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) { if (Logger::enabled()) 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 = to->toBasetype(); Type* fromtype = val->getType()->toBasetype(); assert(fromtype->ty == Tpointer || fromtype->ty == Tfunction); LLValue* rval; if (totype->ty == Tpointer || totype->ty == Tclass) { LLValue* src = val->getRVal(); if (Logger::enabled()) Logger::cout() << "src: " << *src << "to type: " << *tolltype << '\n'; rval = DtoBitCast(src, tolltype); } else if (totype->ty == Tbool) { LLValue* src = val->getRVal(); LLValue* zero = LLConstant::getNullValue(src->getType()); rval = gIR->ir->CreateICmpNE(src, zero, "tmp"); } 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 = to->toBasetype(); Type* fromtype = val->getType()->toBasetype(); assert(fromtype->isfloating()); size_t fromsz = fromtype->size(); size_t tosz = totype->size(); LLValue* rval; if (totype->ty == Tbool) { rval = val->getRVal(); LLValue* zero = LLConstant::getNullValue(rval->getType()); rval = gIR->ir->CreateFCmpUNE(rval, zero, "tmp"); } else 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) { if (to->toBasetype()->ty == Tdelegate) { return DtoPaintType(loc, val, to); } else if (to->toBasetype()->ty == Tbool) { return new DImValue(to, DtoDelegateEquals(TOKnotequal, val->getRVal(), NULL)); } else { error(loc, "invalid cast from '%s' to '%s'", val->getType()->toChars(), to->toChars()); fatal(); } } DValue* DtoCast(Loc& loc, DValue* val, Type* to) { Type* fromtype = val->getType()->toBasetype(); Type* totype = to->toBasetype(); if (fromtype->equals(totype)) return val; Logger::println("Casting from '%s' to '%s'", fromtype->toChars(), to->toChars()); LOG_SCOPE; 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(); } } ////////////////////////////////////////////////////////////////////////////////////////// DValue* DtoPaintType(Loc& loc, DValue* val, Type* to) { Type* from = val->getType()->toBasetype(); Logger::println("repainting from '%s' to '%s'", from->toChars(), to->toChars()); if (from->ty == Tarray) { Type* at = to->toBasetype(); assert(at->ty == Tarray); Type* elem = at->nextOf()->pointerTo(); if (DSliceValue* slice = val->isSlice()) { return new DSliceValue(to, slice->len, DtoBitCast(slice->ptr, DtoType(elem))); } else if (val->isLVal()) { LLValue* ptr = val->getLVal(); ptr = DtoBitCast(ptr, DtoType(at->pointerTo())); return new DVarValue(to, ptr); } else { LLValue *len, *ptr; len = DtoArrayLen(val); ptr = DtoArrayPtr(val); ptr = DtoBitCast(ptr, DtoType(elem)); return new DImValue(to, DtoAggrPair(len, ptr, "tmp")); } } else if (from->ty == Tdelegate) { Type* dgty = to->toBasetype(); assert(dgty->ty == Tdelegate); if (val->isLVal()) { LLValue* ptr = val->getLVal(); assert(isaPointer(ptr)); ptr = DtoBitCast(ptr, getPtrToType(DtoType(dgty))); if (Logger::enabled()) Logger::cout() << "dg ptr: " << *ptr << '\n'; return new DVarValue(to, ptr); } else { LLValue* dg = val->getRVal(); LLValue* context = gIR->ir->CreateExtractValue(dg, 0, ".context"); LLValue* funcptr = gIR->ir->CreateExtractValue(dg, 1, ".funcptr"); funcptr = DtoBitCast(funcptr, DtoType(dgty)->getContainedType(1)); LLValue* aggr = DtoAggrPair(context, funcptr, "tmp"); if (Logger::enabled()) Logger::cout() << "dg: " << *aggr << '\n'; return new DImValue(to, aggr); } } else if (from->ty == Tpointer || from->ty == Tclass || from->ty == Taarray) { Type* b = to->toBasetype(); assert(b->ty == Tpointer || b->ty == Tclass || b->ty == Taarray); LLValue* ptr = DtoBitCast(val->getRVal(), DtoType(b)); return new DImValue(to, ptr); } else { assert(!val->isLVal()); assert(DtoType(to) == DtoType(to)); return new DImValue(to, val->getRVal()); } } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // TEMPLATE HELPERS ////////////////////////////////////////////////////////////////////////////////////////*/ TemplateInstance* DtoIsTemplateInstance(Dsymbol* s) { if (!s) return NULL; if (s->isTemplateInstance() && !s->isTemplateMixin()) return s->isTemplateInstance(); else if (s->parent) return DtoIsTemplateInstance(s->parent); return NULL; } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // 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 DtoConstInitGlobal(VarDeclaration* vd) { vd->codegen(Type::sir); if (vd->ir.initialized) return; vd->ir.initialized = gIR->dmodule; Logger::println("DtoConstInitGlobal(%s) @ %s", vd->toChars(), vd->loc.toChars()); LOG_SCOPE; Dsymbol* par = vd->toParent(); // build the initializer LLConstant* initVal = DtoConstInitializer(vd->loc, vd->type, vd->init); // set the initializer if appropriate IrGlobal* glob = vd->ir.irGlobal; llvm::GlobalVariable* gvar = llvm::cast<llvm::GlobalVariable>(glob->value); // refine the global's opaque type to the type of the initializer llvm::cast<LLOpaqueType>(glob->type.get())->refineAbstractTypeTo(initVal->getType()); assert(!glob->constInit); glob->constInit = initVal; // assign the initializer llvm::GlobalVariable* globalvar = llvm::cast<llvm::GlobalVariable>(glob->value); if (!(vd->storage_class & STCextern) && mustDefineSymbol(vd)) { if (Logger::enabled()) { Logger::println("setting initializer"); Logger::cout() << "global: " << *gvar << '\n'; #if 0 Logger::cout() << "init: " << *initVal << '\n'; #endif } gvar->setInitializer(initVal); #ifndef DISABLE_DEBUG_INFO // do debug info if (global.params.symdebug) { LLGlobalVariable* gv = DtoDwarfGlobalVariable(gvar, vd).getGV(); // keep a reference so GDCE doesn't delete it ! gIR->usedArray.push_back(llvm::ConstantExpr::getBitCast(gv, getVoidPtrType())); } #endif } } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // 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"); // if aliassym is set, this VarDecl is redone as an alias to another symbol // this seems to be done to rewrite Tuple!(...) v; // as a TupleDecl that contains a bunch of individual VarDecls if (vd->aliassym) return DtoDeclarationExp(vd->aliassym); // static if (vd->isDataseg()) { vd->codegen(Type::sir); } else { if (global.params.llvmAnnotate) DtoAnnotation(declaration->toChars()); Logger::println("vdtype = %s", vd->type->toChars()); // ref vardecls are generated when DMD lowers foreach to a for statement, // and this is a hack to support them for this case only if(vd->isRef()) { if (!vd->ir.irLocal) vd->ir.irLocal = new IrLocal(vd); ExpInitializer* ex = vd->init->isExpInitializer(); assert(ex && "ref vars must have expression initializer"); assert(ex->exp); AssignExp* as = ex->exp->isAssignExp(); assert(as && "ref vars must be initialized by an assign exp"); vd->ir.irLocal->value = as->e2->toElem(gIR)->getLVal(); } // referenced by nested delegate? #if DMDV2 if (vd->nestedrefs.dim) { #else if (vd->nestedref) { #endif Logger::println("has nestedref set"); assert(vd->ir.irLocal); DtoNestedInit(vd); } // normal stack variable, allocate storage on the stack if it has not already been done else if(!vd->ir.irLocal && !vd->isRef()) { vd->ir.irLocal = new IrLocal(vd); const LLType* lltype = DtoType(vd->type); llvm::Value* allocainst; if(gTargetData->getTypeSizeInBits(lltype) == 0) allocainst = llvm::ConstantPointerNull::get(getPtrToType(lltype)); else allocainst = DtoAlloca(vd->type, vd->toChars()); //allocainst->setAlignment(vd->type->alignsize()); // TODO vd->ir.irLocal->value = allocainst; #ifndef DISABLE_DEBUG_INFO if (global.params.symdebug) DtoDwarfLocalVariable(allocainst, vd); #endif } else { assert(vd->ir.irLocal->value); } if (Logger::enabled()) Logger::cout() << "llvm value for decl: " << *vd->ir.irLocal->value << '\n'; if (!vd->isRef()) DValue* ie = DtoInitializer(vd->ir.irLocal->value, vd->init); } return new DVarValue(vd->type, vd, vd->ir.getIrValue()); } // struct declaration else if (StructDeclaration* s = declaration->isStructDeclaration()) { Logger::println("StructDeclaration"); s->codegen(Type::sir); } // function declaration else if (FuncDeclaration* f = declaration->isFuncDeclaration()) { Logger::println("FuncDeclaration"); f->codegen(Type::sir); } // 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"); e->codegen(Type::sir); } // 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"); // choose the right set in case this is a conditional declaration Array *d = a->include(NULL, NULL); if (d) for (int i=0; i < d->dim; ++i) { DtoDeclarationExp((Dsymbol*)d->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); } } // tuple declaration else if (TupleDeclaration* tupled = declaration->isTupleDeclaration()) { Logger::println("TupleDeclaration"); if(!tupled->isexp) { error(declaration->loc, "don't know how to handle non-expression tuple decls yet"); assert(0); } assert(tupled->objects); for (int i=0; i < tupled->objects->dim; ++i) { DsymbolExp* exp = (DsymbolExp*)tupled->objects->data[i]; DtoDeclarationExp(exp->s); } } // unsupported declaration else { error(declaration->loc, "Unimplemented Declaration type for DeclarationExp. kind: %s", declaration->kind()); assert(0); } return NULL; } // does pretty much the same as DtoDeclarationExp, except it doesn't initialize, and only handles var declarations LLValue* DtoRawVarDeclaration(VarDeclaration* var, LLValue* addr) { // we don't handle globals with this one assert(!var->isDataseg()); // we don't handle aliases either assert(!var->aliassym); // alloca if necessary LLValue* allocaval = NULL; if (!addr && (!var->ir.irLocal || !var->ir.irLocal->value)) { addr = DtoAlloca(var->type, var->toChars()); #ifndef DISABLE_DEBUG_INFO // add debug info if (global.params.symdebug) DtoDwarfLocalVariable(addr, var); #endif } // referenced by nested function? #if DMDV2 if (var->nestedrefs.dim) #else if (var->nestedref) #endif { assert(var->ir.irLocal); if(!var->ir.irLocal->value) { assert(addr); var->ir.irLocal->value = addr; } else assert(!addr || addr == var->ir.irLocal->value); DtoNestedInit(var); } // normal local variable else { // if this already has storage, it must've been handled already if (var->ir.irLocal && var->ir.irLocal->value) { if (addr && addr != var->ir.irLocal->value) { // This can happen, for example, in scope(exit) blocks which // are translated to IR multiple times. // That *should* only happen after the first one is completely done // though, so just set the address. IF_LOG { Logger::println("Replacing LLVM address of %s", var->toChars()); LOG_SCOPE; Logger::cout() << "Old val: " << *var->ir.irLocal->value << '\n'; Logger::cout() << "New val: " << *addr << '\n'; } var->ir.irLocal->value = addr; } return addr; } assert(!var->ir.isSet()); assert(addr); var->ir.irLocal = new IrLocal(var); var->ir.irLocal->value = addr; } // return the alloca return var->ir.irLocal->value; } /****************************************************************************************/ /*//////////////////////////////////////////////////////////////////////////////////////// // INITIALIZER HELPERS ////////////////////////////////////////////////////////////////////////////////////////*/ LLConstant* DtoConstInitializer(Loc loc, Type* type, Initializer* init) { LLConstant* _init = 0; // may return zero if (!init) { Logger::println("const default initializer for %s", type->toChars()); _init = DtoConstExpInit(loc, type, type->defaultInit()); } else if (ExpInitializer* ex = init->isExpInitializer()) { Logger::println("const expression initializer"); _init = DtoConstExpInit(loc, type, ex->exp);; } else if (StructInitializer* si = init->isStructInitializer()) { Logger::println("const struct initializer"); si->ad->codegen(Type::sir); return si->ad->ir.irStruct->createStructInitializer(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 = LLConstant::getNullValue(ty); } else { Logger::println("unsupported const initializer: %s", init->toChars()); } return _init; } ////////////////////////////////////////////////////////////////////////////////////////// DValue* DtoInitializer(LLValue* target, 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; } ////////////////////////////////////////////////////////////////////////////////////////// static LLConstant* expand_to_sarray(Type *base, Expression* exp) { Logger::println("building type %s from expression (%s) of type %s", base->toChars(), exp->toChars(), exp->type->toChars()); const LLType* dstTy = DtoType(base); if (Logger::enabled()) Logger::cout() << "final llvm type requested: " << *dstTy << '\n'; LLConstant* val = exp->toConstElem(gIR); Type* expbase = exp->type->toBasetype(); Logger::println("expbase: %s", expbase->toChars()); Type* t = base->toBasetype(); LLSmallVector<size_t, 4> dims; while(1) { Logger::println("t: %s", t->toChars()); if (t->equals(expbase)) break; assert(t->ty == Tsarray); TypeSArray* tsa = (TypeSArray*)t; dims.push_back(tsa->dim->toInteger()); assert(t->nextOf()); t = t->nextOf()->toBasetype(); } size_t i = dims.size(); assert(i); std::vector<LLConstant*> inits; while (i--) { const LLArrayType* arrty = LLArrayType::get(val->getType(), dims[i]); inits.clear(); inits.insert(inits.end(), dims[i], val); val = LLConstantArray::get(arrty, inits); } return val; } LLConstant* DtoConstExpInit(Loc loc, Type* type, Expression* exp) { Type* expbase = exp->type->toBasetype(); Type* base = type->toBasetype(); // if not the same basetypes, we won't get the same llvm types either if (!expbase->equals(base)) { if (base->ty == Tsarray) { if (base->nextOf()->toBasetype()->ty == Tvoid) { error(loc, "static arrays of voids have no default initializer"); fatal(); } Logger::println("type is a static array, building constant array initializer to single value"); return expand_to_sarray(base, exp); } else { error("cannot yet convert default initializer %s to type %s to %s", exp->toChars(), exp->type->toChars(), type->toChars()); fatal(); } assert(0); } return exp->toConstElem(gIR); } ////////////////////////////////////////////////////////////////////////////////////////// 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! // FIXME: this is const folded and eliminated immediately ... :/ gIR->ir->CreateAnd(DtoConstSize_t(0),DtoConstSize_t(0),s.c_str()); } ////////////////////////////////////////////////////////////////////////////////////////// LLConstant* DtoTypeInfoOf(Type* type, bool base) { #if DMDV2 // FIXME: this is probably wrong, but it makes druntime's genobj.d compile! type = type->mutableOf()->merge(); // needed.. getTypeInfo does the same #else type = type->merge(); // needed.. getTypeInfo does the same #endif type->getTypeInfo(NULL); TypeInfoDeclaration* tidecl = type->vtinfo; assert(tidecl); tidecl->codegen(Type::sir); assert(tidecl->ir.irGlobal != NULL); assert(tidecl->ir.irGlobal->value != 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 DtoOverloadedIntrinsicName(TemplateInstance* ti, TemplateDeclaration* td, std::string& name) { Logger::println("DtoOverloadedIntrinsicName"); LOG_SCOPE; Logger::println("template instance: %s", ti->toChars()); Logger::println("template declaration: %s", td->toChars()); Logger::println("intrinsic name: %s", td->intrinsicName.c_str()); // for now use the size in bits of the first template param in the instance assert(ti->tdtypes.dim == 1); Type* T = (Type*)ti->tdtypes.data[0]; char prefix = T->isreal() ? 'f' : T->isintegral() ? 'i' : 0; if (!prefix) { ti->error("has invalid template parameter for intrinsic: %s", T->toChars()); fatal(); // or LLVM asserts } char tmp[21]; // probably excessive, but covers a uint64_t sprintf(tmp, "%lu", (unsigned long) gTargetData->getTypeSizeInBits(DtoType(T))); // replace # in name with bitsize name = td->intrinsicName; std::string needle("#"); size_t pos; while(std::string::npos != (pos = name.find(needle))) { if (pos > 0 && name[pos-1] == prefix) { // Properly prefixed, insert bitwidth. name.replace(pos, 1, tmp); } else { if (pos && (name[pos-1] == 'i' || name[pos-1] == 'f')) { // Wrong type character. ti->error("has invalid parameter type for intrinsic %s: %s is not a%s type", name.c_str(), T->toChars(), (name[pos-1] == 'i' ? "n integral" : " floating-point")); } else { // Just plain wrong. (Error in declaration, not instantiation) td->error("has an invalid intrinsic name: %s", name.c_str()); } fatal(); // or LLVM asserts } } Logger::println("final intrinsic name: %s", name.c_str()); } ////////////////////////////////////////////////////////////////////////////////////////// bool mustDefineSymbol(Dsymbol* s) { if (FuncDeclaration* fd = s->isFuncDeclaration()) { // we can't (and probably shouldn't?) define functions // that weren't semantic3'ed if (fd->semanticRun < 4) return false; if (fd->isArrayOp) return true; if (global.params.useAvailableExternally && fd->availableExternally) { // Emit extra functions if we're inlining. // These will get available_externally linkage, // so they shouldn't end up in object code. assert(fd->type->ty == Tfunction); TypeFunction* tf = (TypeFunction*) fd->type; // * If we define extra static constructors, static destructors // and unittests they'll get registered to run, and we won't // be calling them directly anyway. // * If it's a large function, don't emit it unnecessarily. // Use DMD's canInline() to determine whether it's large. // inlineCost() members have been changed to pay less attention // to DMDs limitations, but still have some issues. The most glaring // offenders are any kind of control flow statements other than // 'if' and 'return'. if ( !fd->isStaticCtorDeclaration() && !fd->isStaticDtorDeclaration() && !fd->isUnitTestDeclaration() && fd->canInline(true)) { return true; } // This was only semantic'ed for inlining checks. // We won't be inlining this, so we only need to emit a declaration. return false; } } // Inlining checks may create some variable and class declarations // we don't need to emit. if (global.params.useAvailableExternally) { if (VarDeclaration* vd = s->isVarDeclaration()) if (vd->availableExternally) return false; if (ClassDeclaration* cd = s->isClassDeclaration()) if (cd->availableExternally) return false; } TemplateInstance* tinst = DtoIsTemplateInstance(s); if (tinst) { if (!opts::singleObj) return true; if (!tinst->emittedInModule) { gIR->seenTemplateInstances.insert(tinst); tinst->emittedInModule = gIR->dmodule; } return tinst->emittedInModule == gIR->dmodule; } return s->getModule() == gIR->dmodule; } ////////////////////////////////////////////////////////////////////////////////////////// bool needsTemplateLinkage(Dsymbol* s) { return DtoIsTemplateInstance(s) && mustDefineSymbol(s); } ////////////////////////////////////////////////////////////////////////////////////////// bool hasUnalignedFields(Type* t) { t = t->toBasetype(); if (t->ty == Tsarray) { assert(t->nextOf()->size() % t->nextOf()->alignsize() == 0); return hasUnalignedFields(t->nextOf()); } else if (t->ty != Tstruct) return false; TypeStruct* ts = (TypeStruct*)t; if (ts->unaligned) return (ts->unaligned == 2); StructDeclaration* sym = ts->sym; // go through all the fields and try to find something unaligned ts->unaligned = 2; for (int i = 0; i < sym->fields.dim; i++) { VarDeclaration* f = (VarDeclaration*)sym->fields.data[i]; unsigned a = f->type->alignsize() - 1; if (((f->offset + a) & ~a) != f->offset) return true; else if (f->type->toBasetype()->ty == Tstruct && hasUnalignedFields(f->type)) return true; } ts->unaligned = 1; return false; } ////////////////////////////////////////////////////////////////////////////////////////// IrModule * getIrModule(Module * M) { if (M == NULL) M = gIR->func()->decl->getModule(); assert(M && "null module"); if (!M->ir.irModule) M->ir.irModule = new IrModule(M, M->srcfile->toChars()); return M->ir.irModule; } ////////////////////////////////////////////////////////////////////////////////////////// size_t realignOffset(size_t offset, Type* type) { size_t alignsize = type->alignsize(); size_t alignedoffset = (offset + alignsize - 1) & ~(alignsize - 1); // if the aligned offset already matches the input offset // don't waste time checking things are ok! if (alignedoffset == offset) return alignedoffset; // we cannot get the llvm alignment if the type is still opaque, this can happen in some // forward reference situations, so when this happens we fall back to manual padding. // also handle arbitrary "by-value" opaques nested inside aggregates. const llvm::Type* T = DtoType(type); if (!T->isSized()) { return offset; } // then we check against the llvm alignment size_t alignsize2 = gTargetData->getABITypeAlignment(T); // if it differs we need to insert manual padding as well if (alignsize != alignsize2) { assert(alignsize > alignsize2 && "this is not good, the D and LLVM " "type alignments differ, but LLVM's is bigger! This will break " "aggregate type mapping"); // don't try and align the offset, and let the mappers pad 100% manually return offset; } // ok, we're good, llvm will align properly! return alignedoffset; } ////////////////////////////////////////////////////////////////////////////////////////// Type * stripModifiers( Type * type ) { #if DMDV2 Type *t = type; while (t->mod) { switch (t->mod) { case MODconst: t = type->cto; break; case MODshared: t = type->sto; break; case MODinvariant: t = type->ito; break; case MODshared | MODconst: t = type->scto; break; default: assert(0 && "Unhandled type modifier"); } if (!t) { unsigned sz = type->sizeTy[type->ty]; t = (Type *)malloc(sz); memcpy(t, type, sz); t->mod = 0; t->deco = NULL; t->arrayof = NULL; t->pto = NULL; t->rto = NULL; t->cto = NULL; t->ito = NULL; t->sto = NULL; t->scto = NULL; t->vtinfo = NULL; t = t->merge(); t->fixTo(type); switch (type->mod) { case MODconst: t->cto = type; break; case MODinvariant: t->ito = type; break; case MODshared: t->sto = type; break; case MODshared | MODconst: t->scto = type; break; default: assert(0); } } } return t; #else return type; #endif } ////////////////////////////////////////////////////////////////////////////////////////// LLValue* makeLValue(Loc& loc, DValue* value) { Type* valueType = value->getType(); bool needsMemory; LLValue* valuePointer; if (value->isIm()) { valuePointer = value->getRVal(); needsMemory = !DtoIsPassedByRef(valueType); } else if (DVarValue* var = value->isVar()) { valuePointer = value->getLVal(); needsMemory = false; } else if (value->isConst()) { valuePointer = value->getRVal(); needsMemory = true; } else { valuePointer = DtoAlloca(valueType, ".makelvaluetmp"); DVarValue var(valueType, valuePointer); DtoAssign(loc, &var, value); needsMemory = false; } if (needsMemory) { LLValue* tmp = DtoAlloca(valueType, ".makelvaluetmp"); DtoStore(valuePointer, tmp); valuePointer = tmp; } return valuePointer; }