Mercurial > projects > ldc
view gen/statements.cpp @ 314:8d98e42ece93 trunk
[svn r335] The basics of exception handling are in place.
Still need to make sure calls are turned into invokes everywhere. (NewExpression for instance)
Still some rough edges and corner cases to figure out.
Needs testing!
author | ChristianK |
---|---|
date | Wed, 02 Jul 2008 22:20:18 +0200 |
parents | 9967a3270837 |
children | a9697749e898 |
line wrap: on
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// Statements: D -> LLVM glue #include <stdio.h> #include <math.h> #include <sstream> #include <fstream> #include <iostream> #include "gen/llvm.h" #include "llvm/InlineAsm.h" #include "llvm/Support/CFG.h" #include "mars.h" #include "total.h" #include "init.h" #include "mtype.h" #include "hdrgen.h" #include "port.h" #include "gen/irstate.h" #include "gen/logger.h" #include "gen/tollvm.h" #include "gen/llvmhelpers.h" #include "gen/runtime.h" #include "gen/arrays.h" #include "gen/todebug.h" #include "gen/dvalue.h" #include "ir/irfunction.h" ////////////////////////////////////////////////////////////////////////////// void CompoundStatement::toIR(IRState* p) { Logger::println("CompoundStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; for (int i=0; i<statements->dim; i++) { Statement* s = (Statement*)statements->data[i]; if (s) { s->toIR(p); } } } ////////////////////////////////////////////////////////////////////////////// void ReturnStatement::toIR(IRState* p) { Logger::println("ReturnStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (exp) { if (p->topfunc()->getReturnType() == LLType::VoidTy) { IrFunction* f = p->func(); assert(f->type->llvmRetInPtr); assert(f->decl->ir.irFunc->retArg); if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); DValue* rvar = new DVarValue(f->type->next, f->decl->ir.irFunc->retArg, true); p->exps.push_back(IRExp(NULL,exp,rvar)); DValue* e = exp->toElem(p); p->exps.pop_back(); if (!e->inPlace()) DtoAssign(rvar, e); DtoEnclosingHandlers(enclosinghandler, NULL); if (global.params.symdebug) DtoDwarfFuncEnd(f->decl); llvm::ReturnInst::Create(p->scopebb()); } else { if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); DValue* e = exp->toElem(p); LLValue* v = e->getRVal(); delete e; Logger::cout() << "return value is '" <<*v << "'\n"; // can happen for classes if (v->getType() != p->topfunc()->getReturnType()) { v = gIR->ir->CreateBitCast(v, p->topfunc()->getReturnType(), "tmp"); Logger::cout() << "return value after cast: " << *v << '\n'; } DtoEnclosingHandlers(enclosinghandler, NULL); if (global.params.symdebug) DtoDwarfFuncEnd(p->func()->decl); llvm::ReturnInst::Create(v, p->scopebb()); } } else { assert(p->topfunc()->getReturnType() == LLType::VoidTy); DtoEnclosingHandlers(enclosinghandler, NULL); if (global.params.symdebug) DtoDwarfFuncEnd(p->func()->decl); llvm::ReturnInst::Create(p->scopebb()); } // the return terminated this basicblock, start a new one llvm::BasicBlock* oldend = gIR->scopeend(); llvm::BasicBlock* bb = llvm::BasicBlock::Create("afterreturn", p->topfunc(), oldend); p->scope() = IRScope(bb,oldend); } ////////////////////////////////////////////////////////////////////////////// void ExpStatement::toIR(IRState* p) { Logger::println("ExpStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); if (exp) { if (global.params.llvmAnnotate) DtoAnnotation(exp->toChars()); elem* e = exp->toElem(p); delete e; } /*elem* e = exp->toElem(p); p->buf.printf("%s", e->toChars()); delete e; p->buf.writenl();*/ } ////////////////////////////////////////////////////////////////////////////// void IfStatement::toIR(IRState* p) { Logger::println("IfStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); if (match) { LLValue* allocainst = new llvm::AllocaInst(DtoType(match->type), "._tmp_if_var", p->topallocapoint()); match->ir.irLocal = new IrLocal(match); match->ir.irLocal->value = allocainst; } DValue* cond_e = condition->toElem(p); LLValue* cond_val = cond_e->getRVal(); delete cond_e; llvm::BasicBlock* oldend = gIR->scopeend(); llvm::BasicBlock* ifbb = llvm::BasicBlock::Create("if", gIR->topfunc(), oldend); llvm::BasicBlock* endbb = llvm::BasicBlock::Create("endif", gIR->topfunc(), oldend); llvm::BasicBlock* elsebb = elsebody ? llvm::BasicBlock::Create("else", gIR->topfunc(), endbb) : endbb; if (cond_val->getType() != LLType::Int1Ty) { Logger::cout() << "if conditional: " << *cond_val << '\n'; cond_val = DtoBoolean(cond_val); } LLValue* ifgoback = llvm::BranchInst::Create(ifbb, elsebb, cond_val, gIR->scopebb()); // replace current scope gIR->scope() = IRScope(ifbb,elsebb); // do scoped statements if (ifbody) ifbody->toIR(p); if (!gIR->scopereturned()) { llvm::BranchInst::Create(endbb,gIR->scopebb()); } if (elsebody) { //assert(0); gIR->scope() = IRScope(elsebb,endbb); elsebody->toIR(p); if (!gIR->scopereturned()) { llvm::BranchInst::Create(endbb,gIR->scopebb()); } } // rewrite the scope gIR->scope() = IRScope(endbb,oldend); } ////////////////////////////////////////////////////////////////////////////// void ScopeStatement::toIR(IRState* p) { Logger::println("ScopeStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; /*llvm::BasicBlock* oldend = p->scopeend(); llvm::BasicBlock* beginbb = 0; // remove useless branches by clearing and reusing the current basicblock llvm::BasicBlock* bb = p->scopebb(); if (bb->empty()) { beginbb = bb; } else { beginbb = llvm::BasicBlock::Create("scope", p->topfunc(), oldend); if (!p->scopereturned()) llvm::BranchInst::Create(beginbb, bb); } llvm::BasicBlock* endbb = llvm::BasicBlock::Create("endscope", p->topfunc(), oldend); if (beginbb != bb) p->scope() = IRScope(beginbb, endbb); else p->scope().end = endbb;*/ if (statement) statement->toIR(p); /*p->scope().end = oldend; Logger::println("Erasing scope endbb"); endbb->eraseFromParent();*/ } ////////////////////////////////////////////////////////////////////////////// void WhileStatement::toIR(IRState* p) { Logger::println("WhileStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); // create while blocks llvm::BasicBlock* oldend = gIR->scopeend(); llvm::BasicBlock* whilebb = llvm::BasicBlock::Create("whilecond", gIR->topfunc(), oldend); llvm::BasicBlock* whilebodybb = llvm::BasicBlock::Create("whilebody", gIR->topfunc(), oldend); llvm::BasicBlock* endbb = llvm::BasicBlock::Create("endwhile", gIR->topfunc(), oldend); // move into the while block p->ir->CreateBr(whilebb); //llvm::BranchInst::Create(whilebb, gIR->scopebb()); // replace current scope gIR->scope() = IRScope(whilebb,endbb); // create the condition DValue* cond_e = condition->toElem(p); LLValue* cond_val = DtoBoolean(cond_e->getRVal()); delete cond_e; // conditional branch LLValue* ifbreak = llvm::BranchInst::Create(whilebodybb, endbb, cond_val, p->scopebb()); // rewrite scope gIR->scope() = IRScope(whilebodybb,endbb); // while body code p->loopbbs.push_back(IRLoopScope(this,enclosinghandler,whilebb,endbb)); body->toIR(p); p->loopbbs.pop_back(); // loop if (!gIR->scopereturned()) llvm::BranchInst::Create(whilebb, gIR->scopebb()); // rewrite the scope gIR->scope() = IRScope(endbb,oldend); } ////////////////////////////////////////////////////////////////////////////// void DoStatement::toIR(IRState* p) { Logger::println("DoStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); // create while blocks llvm::BasicBlock* oldend = gIR->scopeend(); llvm::BasicBlock* dowhilebb = llvm::BasicBlock::Create("dowhile", gIR->topfunc(), oldend); llvm::BasicBlock* endbb = llvm::BasicBlock::Create("enddowhile", gIR->topfunc(), oldend); // move into the while block assert(!gIR->scopereturned()); llvm::BranchInst::Create(dowhilebb, gIR->scopebb()); // replace current scope gIR->scope() = IRScope(dowhilebb,endbb); // do-while body code p->loopbbs.push_back(IRLoopScope(this,enclosinghandler,dowhilebb,endbb)); body->toIR(p); p->loopbbs.pop_back(); // create the condition DValue* cond_e = condition->toElem(p); LLValue* cond_val = DtoBoolean(cond_e->getRVal()); delete cond_e; // conditional branch LLValue* ifbreak = llvm::BranchInst::Create(dowhilebb, endbb, cond_val, gIR->scopebb()); // rewrite the scope gIR->scope() = IRScope(endbb,oldend); } ////////////////////////////////////////////////////////////////////////////// void ForStatement::toIR(IRState* p) { Logger::println("ForStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); // create for blocks llvm::BasicBlock* oldend = gIR->scopeend(); llvm::BasicBlock* forbb = llvm::BasicBlock::Create("forcond", gIR->topfunc(), oldend); llvm::BasicBlock* forbodybb = llvm::BasicBlock::Create("forbody", gIR->topfunc(), oldend); llvm::BasicBlock* forincbb = llvm::BasicBlock::Create("forinc", gIR->topfunc(), oldend); llvm::BasicBlock* endbb = llvm::BasicBlock::Create("endfor", gIR->topfunc(), oldend); // init if (init != 0) init->toIR(p); // move into the for condition block, ie. start the loop assert(!gIR->scopereturned()); llvm::BranchInst::Create(forbb, gIR->scopebb()); p->loopbbs.push_back(IRLoopScope(this,enclosinghandler,forincbb,endbb)); // replace current scope gIR->scope() = IRScope(forbb,forbodybb); // create the condition DValue* cond_e = condition->toElem(p); LLValue* cond_val = DtoBoolean(cond_e->getRVal()); delete cond_e; // conditional branch assert(!gIR->scopereturned()); llvm::BranchInst::Create(forbodybb, endbb, cond_val, gIR->scopebb()); // rewrite scope gIR->scope() = IRScope(forbodybb,forincbb); // do for body code body->toIR(p); // move into the for increment block if (!gIR->scopereturned()) llvm::BranchInst::Create(forincbb, gIR->scopebb()); gIR->scope() = IRScope(forincbb, endbb); // increment if (increment) { DValue* inc = increment->toElem(p); delete inc; } // loop if (!gIR->scopereturned()) llvm::BranchInst::Create(forbb, gIR->scopebb()); p->loopbbs.pop_back(); // rewrite the scope gIR->scope() = IRScope(endbb,oldend); } ////////////////////////////////////////////////////////////////////////////// void BreakStatement::toIR(IRState* p) { Logger::println("BreakStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; // don't emit two terminators in a row // happens just before DMD generated default statements if the last case terminates if (p->scopereturned()) return; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); if (ident != 0) { Logger::println("ident = %s", ident->toChars()); DtoEnclosingHandlers(enclosinghandler, target->enclosinghandler); // get the loop statement the label refers to Statement* targetLoopStatement = target->statement; ScopeStatement* tmp; while(tmp = targetLoopStatement->isScopeStatement()) targetLoopStatement = tmp->statement; // find the right break block and jump there bool found = false; IRState::LoopScopeVec::reverse_iterator it; for(it = p->loopbbs.rbegin(); it != p->loopbbs.rend(); ++it) { if(it->s == targetLoopStatement) { llvm::BranchInst::Create(it->end, p->scopebb()); found = true; break; } } assert(found); } else { DtoEnclosingHandlers(enclosinghandler, p->loopbbs.back().enclosinghandler); llvm::BranchInst::Create(p->loopbbs.back().end, p->scopebb()); } // the break terminated this basicblock, start a new one llvm::BasicBlock* oldend = gIR->scopeend(); llvm::BasicBlock* bb = llvm::BasicBlock::Create("afterbreak", p->topfunc(), oldend); p->scope() = IRScope(bb,oldend); } ////////////////////////////////////////////////////////////////////////////// void ContinueStatement::toIR(IRState* p) { Logger::println("ContinueStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); if (ident != 0) { Logger::println("ident = %s", ident->toChars()); DtoEnclosingHandlers(enclosinghandler, target->enclosinghandler); // get the loop statement the label refers to Statement* targetLoopStatement = target->statement; ScopeStatement* tmp; while(tmp = targetLoopStatement->isScopeStatement()) targetLoopStatement = tmp->statement; // find the right continue block and jump there IRState::LoopScopeVec::reverse_iterator it; for(it = gIR->loopbbs.rbegin(); it != gIR->loopbbs.rend(); ++it) { if(it->s == targetLoopStatement) { llvm::BranchInst::Create(it->begin, gIR->scopebb()); return; } } assert(0); } else { // can't 'continue' within switch, so omit them IRState::LoopScopeVec::reverse_iterator it; for(it = gIR->loopbbs.rbegin(); it != gIR->loopbbs.rend(); ++it) { if(!it->isSwitch) { break; } } DtoEnclosingHandlers(enclosinghandler, it->enclosinghandler); llvm::BranchInst::Create(it->begin, gIR->scopebb()); } } ////////////////////////////////////////////////////////////////////////////// void OnScopeStatement::toIR(IRState* p) { Logger::println("OnScopeStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; assert(statement); //statement->toIR(p); // this seems to be redundant } ////////////////////////////////////////////////////////////////////////////// void TryFinallyStatement::toIR(IRState* p) { Logger::println("TryFinallyStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); // create basic blocks llvm::BasicBlock* oldend = p->scopeend(); llvm::BasicBlock* trybb = llvm::BasicBlock::Create("try", p->topfunc(), oldend); llvm::BasicBlock* finallybb = llvm::BasicBlock::Create("finally", p->topfunc(), oldend); // the landing pad for statements in the try block // only reached via eh-unwinding, a call to resume unwinding is appended llvm::BasicBlock* unwindfinallybb = llvm::BasicBlock::Create("unwindfinally", p->topfunc(), oldend); llvm::BasicBlock* endbb = llvm::BasicBlock::Create("endtryfinally", p->topfunc(), oldend); // pass the previous BB into this assert(!gIR->scopereturned()); llvm::BranchInst::Create(trybb, p->scopebb()); // // do the try block // p->scope() = IRScope(trybb,finallybb); p->landingPads.push_back(unwindfinallybb); assert(body); body->toIR(p); // terminate try BB if (!p->scopereturned()) llvm::BranchInst::Create(finallybb, p->scopebb()); p->landingPads.pop_back(); // // do finally block // p->scope() = IRScope(finallybb,unwindfinallybb); assert(finalbody); finalbody->toIR(p); // terminate finally //TODO: isn't it an error to have a 'returned' finally block? if (!gIR->scopereturned()) { llvm::BranchInst::Create(endbb, p->scopebb()); } // // do landing pad // p->scope() = IRScope(unwindfinallybb,endbb); // eh_ptr = llvm.eh.exception(); llvm::Function* eh_exception_fn = GET_INTRINSIC_DECL(eh_exception); LLValue* eh_ptr = gIR->ir->CreateCall(eh_exception_fn); // eh_sel = llvm.eh.selector(eh_ptr, cast(byte*)&_d_eh_personality, 0); llvm::Function* eh_selector_fn; if (global.params.is64bit) eh_selector_fn = GET_INTRINSIC_DECL(eh_selector_i64); else eh_selector_fn = GET_INTRINSIC_DECL(eh_selector_i32); llvm::Function* personality_fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_eh_personality"); LLValue* personality_fn_arg = gIR->ir->CreateBitCast(personality_fn, getPtrToType(LLType::Int8Ty)); LLValue* eh_sel = gIR->ir->CreateCall3(eh_selector_fn, eh_ptr, personality_fn_arg, llvm::ConstantInt::get(LLType::Int32Ty, 0)); // emit finally code finalbody->toIR(p); // finally code may not be terminated! if (gIR->scopereturned()) { error("finally blocks may not be terminated", loc.toChars()); fatal(); } llvm::Function* unwind_resume_fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_eh_resume_unwind"); gIR->ir->CreateCall(unwind_resume_fn, eh_ptr); gIR->ir->CreateUnreachable(); // rewrite the scope p->scope() = IRScope(endbb,oldend); } ////////////////////////////////////////////////////////////////////////////// void TryCatchStatement::toIR(IRState* p) { Logger::println("TryCatchStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); // create basic blocks llvm::BasicBlock* oldend = p->scopeend(); llvm::BasicBlock* trybb = llvm::BasicBlock::Create("try", p->topfunc(), oldend); // the landing pad will be responsible for branching to the correct catch block llvm::BasicBlock* landingpadbb = llvm::BasicBlock::Create("landingpad", p->topfunc(), oldend); llvm::BasicBlock* endbb = llvm::BasicBlock::Create("endtrycatch", p->topfunc(), oldend); // pass the previous BB into this assert(!gIR->scopereturned()); llvm::BranchInst::Create(trybb, p->scopebb()); // // do the try block // p->scope() = IRScope(trybb,landingpadbb); p->landingPads.push_back(landingpadbb); assert(body); body->toIR(p); if (!gIR->scopereturned()) llvm::BranchInst::Create(endbb, p->scopebb()); p->landingPads.pop_back(); // // do catches // assert(catches); // get storage for exception var const LLType* objectTy = DtoType(ClassDeclaration::object->type); llvm::AllocaInst* catch_var = new llvm::AllocaInst(objectTy,"catchvar",p->topallocapoint()); // for further reference in landing pad LLSmallVector<llvm::BasicBlock*,4> catch_bbs; for (int i = 0; i < catches->dim; i++) { Catch *c = (Catch *)catches->data[i]; llvm::BasicBlock* catchbb = llvm::BasicBlock::Create("catch", p->topfunc(), oldend); catch_bbs.push_back(catchbb); p->scope() = IRScope(catchbb,oldend); // assign storage to catch var if(c->var) { assert(!c->var->ir.irLocal); c->var->ir.irLocal = new IrLocal(c->var); c->var->ir.irLocal->value = gIR->ir->CreateBitCast(catch_var, getPtrToType(DtoType(c->var->type))); } // emit handler assert(c->handler); c->handler->toIR(p); if (!gIR->scopereturned()) llvm::BranchInst::Create(endbb, p->scopebb()); } // // do landing pad // p->scope() = IRScope(landingpadbb,endbb); // eh_ptr = llvm.eh.exception(); llvm::Function* eh_exception_fn = GET_INTRINSIC_DECL(eh_exception); LLValue* eh_ptr = gIR->ir->CreateCall(eh_exception_fn); // store eh_ptr in catch_var gIR->ir->CreateStore(gIR->ir->CreateBitCast(eh_ptr, objectTy), catch_var); // eh_sel = llvm.eh.selector(eh_ptr, cast(byte*)&_d_eh_personality, <classinfos>); llvm::Function* eh_selector_fn; if (global.params.is64bit) eh_selector_fn = GET_INTRINSIC_DECL(eh_selector_i64); else eh_selector_fn = GET_INTRINSIC_DECL(eh_selector_i32); LLSmallVector<LLValue*,4> args; args.push_back(eh_ptr); llvm::Function* personality_fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_eh_personality"); args.push_back(gIR->ir->CreateBitCast(personality_fn, getPtrToType(LLType::Int8Ty))); for (int i = 0; i < catches->dim; i++) { Catch *c = (Catch *)catches->data[i]; assert(c->type); ClassDeclaration* cdecl = c->type->isClassHandle(); assert(cdecl); assert(cdecl->ir.irStruct); args.push_back(cdecl->ir.irStruct->classInfo); } LLValue* eh_sel = gIR->ir->CreateCall(eh_selector_fn, args.begin(), args.end()); // switch on eh_sel and branch to correct case // setup default target llvm::BasicBlock* defaulttarget = llvm::BasicBlock::Create("default", p->topfunc(), oldend); //TODO: Error handling? new llvm::UnreachableInst(defaulttarget); llvm::SwitchInst* sw = p->ir->CreateSwitch(eh_sel, defaulttarget, catch_bbs.size()); // add all catches as cases for(unsigned int c = 0; c < catch_bbs.size(); ++c) { llvm::BasicBlock* casebb = llvm::BasicBlock::Create("case", p->topfunc(), oldend); llvm::BranchInst::Create(catch_bbs[c], casebb); sw->addCase(llvm::ConstantInt::get(LLType::Int32Ty, c+1), casebb); } // rewrite the scope p->scope() = IRScope(endbb,oldend); } ////////////////////////////////////////////////////////////////////////////// void ThrowStatement::toIR(IRState* p) { Logger::println("ThrowStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); assert(exp); DValue* e = exp->toElem(p); llvm::Function* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_throw_exception"); //Logger::cout() << "calling: " << *fn << '\n'; LLValue* arg = DtoBitCast(e->getRVal(), fn->getFunctionType()->getParamType(0)); //Logger::cout() << "arg: " << *arg << '\n'; gIR->ir->CreateCall(fn, arg, ""); gIR->ir->CreateUnreachable(); // need a block after the throw for now llvm::BasicBlock* oldend = gIR->scopeend(); llvm::BasicBlock* bb = llvm::BasicBlock::Create("afterthrow", p->topfunc(), oldend); p->scope() = IRScope(bb,oldend); } ////////////////////////////////////////////////////////////////////////////// // used to build the sorted list of cases struct Case : Object { StringExp* str; size_t index; Case(StringExp* s, size_t i) { str = s; index = i; } int compare(Object *obj) { Case* c2 = (Case*)obj; return str->compare(c2->str); } }; static LLValue* call_string_switch_runtime(llvm::GlobalVariable* table, Expression* e) { Type* dt = DtoDType(e->type); Type* dtnext = DtoDType(dt->next); TY ty = dtnext->ty; const char* fname; if (ty == Tchar) { fname = "_d_switch_string"; } else if (ty == Twchar) { fname = "_d_switch_ustring"; } else if (ty == Tdchar) { fname = "_d_switch_dstring"; } else { assert(0 && "not char/wchar/dchar"); } llvm::Function* fn = LLVM_D_GetRuntimeFunction(gIR->module, fname); Logger::cout() << *table->getType() << '\n'; Logger::cout() << *fn->getFunctionType()->getParamType(0) << '\n'; assert(table->getType() == fn->getFunctionType()->getParamType(0)); DValue* val = e->toElem(gIR); LLValue* llval; if (DSliceValue* sval = val->isSlice()) { // give storage llval = new llvm::AllocaInst(DtoType(e->type), "tmp", gIR->topallocapoint()); DVarValue* vv = new DVarValue(e->type, llval, true); DtoAssign(vv, val); } else { llval = val->getRVal(); } assert(llval->getType() == fn->getFunctionType()->getParamType(1)); llvm::CallInst* call = gIR->ir->CreateCall2(fn, table, llval, "tmp"); llvm::PAListPtr palist; palist = palist.addAttr(1, llvm::ParamAttr::ByVal); palist = palist.addAttr(2, llvm::ParamAttr::ByVal); call->setParamAttrs(palist); return call; } void SwitchStatement::toIR(IRState* p) { Logger::println("SwitchStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); llvm::BasicBlock* oldend = gIR->scopeend(); // clear data from previous passes... :/ for (int i=0; i<cases->dim; ++i) { CaseStatement* cs = (CaseStatement*)cases->data[i]; cs->bodyBB = NULL; cs->llvmIdx = NULL; } // string switch? llvm::GlobalVariable* switchTable = 0; Array caseArray; if (!condition->type->isintegral()) { Logger::println("is string switch"); // build array of the stringexpS caseArray.reserve(cases->dim); for (int i=0; i<cases->dim; ++i) { CaseStatement* cs = (CaseStatement*)cases->data[i]; assert(cs->exp->op == TOKstring); caseArray.push(new Case((StringExp*)cs->exp, i)); } // first sort it caseArray.sort(); // iterate and add indices to cases std::vector<LLConstant*> inits(caseArray.dim); for (size_t i=0; i<caseArray.dim; ++i) { Case* c = (Case*)caseArray.data[i]; CaseStatement* cs = (CaseStatement*)cases->data[c->index]; cs->llvmIdx = DtoConstUint(i); inits[i] = c->str->toConstElem(p); } // build static array for ptr or final array const LLType* elemTy = DtoType(condition->type); const llvm::ArrayType* arrTy = llvm::ArrayType::get(elemTy, inits.size()); LLConstant* arrInit = llvm::ConstantArray::get(arrTy, inits); llvm::GlobalVariable* arr = new llvm::GlobalVariable(arrTy, true, llvm::GlobalValue::InternalLinkage, arrInit, ".string_switch_table_data", gIR->module); const LLType* elemPtrTy = getPtrToType(elemTy); LLConstant* arrPtr = llvm::ConstantExpr::getBitCast(arr, elemPtrTy); // build the static table std::vector<const LLType*> types; types.push_back(DtoSize_t()); types.push_back(elemPtrTy); const llvm::StructType* sTy = llvm::StructType::get(types); std::vector<LLConstant*> sinits; sinits.push_back(DtoConstSize_t(inits.size())); sinits.push_back(arrPtr); LLConstant* sInit = llvm::ConstantStruct::get(sTy, sinits); switchTable = new llvm::GlobalVariable(sTy, true, llvm::GlobalValue::InternalLinkage, sInit, ".string_switch_table", gIR->module); } // body block llvm::BasicBlock* bodybb = llvm::BasicBlock::Create("switchbody", p->topfunc(), oldend); // default llvm::BasicBlock* defbb = 0; if (sdefault) { Logger::println("has default"); defbb = llvm::BasicBlock::Create("default", p->topfunc(), oldend); sdefault->bodyBB = defbb; } // end (break point) llvm::BasicBlock* endbb = llvm::BasicBlock::Create("switchend", p->topfunc(), oldend); // condition var LLValue* condVal; // integral switch if (condition->type->isintegral()) { DValue* cond = condition->toElem(p); condVal = cond->getRVal(); } // string switch else { condVal = call_string_switch_runtime(switchTable, condition); } llvm::SwitchInst* si = llvm::SwitchInst::Create(condVal, defbb ? defbb : endbb, cases->dim, p->scopebb()); // do switch body assert(body); p->scope() = IRScope(bodybb, endbb); p->loopbbs.push_back(IRLoopScope(this,enclosinghandler,p->scopebb(),endbb,true)); body->toIR(p); p->loopbbs.pop_back(); if (!p->scopereturned()) llvm::BranchInst::Create(endbb, p->scopebb()); // add the cases for (int i=0; i<cases->dim; ++i) { CaseStatement* cs = (CaseStatement*)cases->data[i]; si->addCase(cs->llvmIdx, cs->bodyBB); } gIR->scope() = IRScope(endbb,oldend); } ////////////////////////////////////////////////////////////////////////////// void CaseStatement::toIR(IRState* p) { Logger::println("CaseStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; llvm::BasicBlock* nbb = llvm::BasicBlock::Create("case", p->topfunc(), p->scopeend()); if (bodyBB && !bodyBB->getTerminator()) { llvm::BranchInst::Create(nbb, bodyBB); } bodyBB = nbb; if (llvmIdx == NULL) { LLConstant* c = exp->toConstElem(p); llvmIdx = isaConstantInt(c); } if (!p->scopereturned()) llvm::BranchInst::Create(bodyBB, p->scopebb()); p->scope() = IRScope(bodyBB, p->scopeend()); assert(statement); statement->toIR(p); } ////////////////////////////////////////////////////////////////////////////// void DefaultStatement::toIR(IRState* p) { Logger::println("DefaultStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; assert(bodyBB); llvm::BasicBlock* nbb = llvm::BasicBlock::Create("default", p->topfunc(), p->scopeend()); if (!bodyBB->getTerminator()) { llvm::BranchInst::Create(nbb, bodyBB); } bodyBB = nbb; if (!p->scopereturned()) llvm::BranchInst::Create(bodyBB, p->scopebb()); p->scope() = IRScope(bodyBB, p->scopeend()); assert(statement); statement->toIR(p); } ////////////////////////////////////////////////////////////////////////////// void UnrolledLoopStatement::toIR(IRState* p) { Logger::println("UnrolledLoopStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); llvm::BasicBlock* oldend = gIR->scopeend(); llvm::BasicBlock* endbb = llvm::BasicBlock::Create("unrolledend", p->topfunc(), oldend); p->scope() = IRScope(p->scopebb(),endbb); p->loopbbs.push_back(IRLoopScope(this,enclosinghandler,p->scopebb(),endbb)); for (int i=0; i<statements->dim; ++i) { Statement* s = (Statement*)statements->data[i]; s->toIR(p); } p->loopbbs.pop_back(); llvm::BranchInst::Create(endbb, p->scopebb()); p->scope() = IRScope(endbb,oldend); } ////////////////////////////////////////////////////////////////////////////// void ForeachStatement::toIR(IRState* p) { Logger::println("ForeachStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); //assert(arguments->dim == 1); assert(value != 0); assert(body != 0); assert(aggr != 0); assert(func != 0); //Argument* arg = (Argument*)arguments->data[0]; //Logger::println("Argument is %s", arg->toChars()); Logger::println("aggr = %s", aggr->toChars()); // key const LLType* keytype = key ? DtoType(key->type) : DtoSize_t(); LLValue* keyvar = new llvm::AllocaInst(keytype, "foreachkey", p->topallocapoint()); if (key) { //key->llvmValue = keyvar; assert(!key->ir.irLocal); key->ir.irLocal = new IrLocal(key); key->ir.irLocal->value = keyvar; } LLValue* zerokey = llvm::ConstantInt::get(keytype,0,false); // value Logger::println("value = %s", value->toPrettyChars()); const LLType* valtype = DtoType(value->type); LLValue* valvar = NULL; if (!value->isRef() && !value->isOut()) valvar = new llvm::AllocaInst(valtype, "foreachval", p->topallocapoint()); if (!value->ir.irLocal) value->ir.irLocal = new IrLocal(value); // what to iterate DValue* aggrval = aggr->toElem(p); Type* aggrtype = DtoDType(aggr->type); // get length and pointer LLValue* niters = DtoArrayLen(aggrval); LLValue* val = DtoArrayPtr(aggrval); if (niters->getType() != keytype) { size_t sz1 = getTypeBitSize(niters->getType()); size_t sz2 = getTypeBitSize(keytype); if (sz1 < sz2) niters = gIR->ir->CreateZExt(niters, keytype, "foreachtrunckey"); else if (sz1 > sz2) niters = gIR->ir->CreateTrunc(niters, keytype, "foreachtrunckey"); else niters = gIR->ir->CreateBitCast(niters, keytype, "foreachtrunckey"); } LLConstant* delta = 0; if (op == TOKforeach) { new llvm::StoreInst(zerokey, keyvar, p->scopebb()); } else { new llvm::StoreInst(niters, keyvar, p->scopebb()); } llvm::BasicBlock* oldend = gIR->scopeend(); llvm::BasicBlock* condbb = llvm::BasicBlock::Create("foreachcond", p->topfunc(), oldend); llvm::BasicBlock* bodybb = llvm::BasicBlock::Create("foreachbody", p->topfunc(), oldend); llvm::BasicBlock* nextbb = llvm::BasicBlock::Create("foreachnext", p->topfunc(), oldend); llvm::BasicBlock* endbb = llvm::BasicBlock::Create("foreachend", p->topfunc(), oldend); llvm::BranchInst::Create(condbb, p->scopebb()); // condition p->scope() = IRScope(condbb,bodybb); LLValue* done = 0; LLValue* load = DtoLoad(keyvar); if (op == TOKforeach) { done = new llvm::ICmpInst(llvm::ICmpInst::ICMP_ULT, load, niters, "tmp", p->scopebb()); } else if (op == TOKforeach_reverse) { done = new llvm::ICmpInst(llvm::ICmpInst::ICMP_UGT, load, zerokey, "tmp", p->scopebb()); load = llvm::BinaryOperator::createSub(load,llvm::ConstantInt::get(keytype, 1, false),"tmp",p->scopebb()); new llvm::StoreInst(load, keyvar, p->scopebb()); } llvm::BranchInst::Create(bodybb, endbb, done, p->scopebb()); // init body p->scope() = IRScope(bodybb,nextbb); // get value for this iteration LLConstant* zero = llvm::ConstantInt::get(keytype,0,false); LLValue* loadedKey = p->ir->CreateLoad(keyvar,"tmp"); value->ir.irLocal->value = DtoGEP1(val,loadedKey); if (!value->isRef() && !value->isOut()) { DValue* dst = new DVarValue(value->type, valvar, true); DValue* src = new DVarValue(value->type, value->ir.irLocal->value, true); DtoAssign(dst, src); value->ir.irLocal->value = valvar; } // emit body p->loopbbs.push_back(IRLoopScope(this,enclosinghandler,nextbb,endbb)); body->toIR(p); p->loopbbs.pop_back(); if (!p->scopereturned()) llvm::BranchInst::Create(nextbb, p->scopebb()); // next p->scope() = IRScope(nextbb,endbb); if (op == TOKforeach) { LLValue* load = DtoLoad(keyvar); load = p->ir->CreateAdd(load, llvm::ConstantInt::get(keytype, 1, false), "tmp"); DtoStore(load, keyvar); } llvm::BranchInst::Create(condbb, p->scopebb()); // end p->scope() = IRScope(endbb,oldend); } ////////////////////////////////////////////////////////////////////////////// void LabelStatement::toIR(IRState* p) { Logger::println("LabelStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; // if it's an inline asm label, we don't create a basicblock, just emit it in the asm if (p->asmBlock) { IRAsmStmt* a = new IRAsmStmt; a->code += p->func()->decl->mangle(); a->code += "_"; a->code += ident->toChars(); a->code += ":"; p->asmBlock->s.push_back(a); p->asmBlock->internalLabels.push_back(ident); } else { assert(tf == NULL); llvm::BasicBlock* oldend = gIR->scopeend(); if (llvmBB) llvmBB->moveBefore(oldend); else llvmBB = llvm::BasicBlock::Create("label", p->topfunc(), oldend); if (!p->scopereturned()) llvm::BranchInst::Create(llvmBB, p->scopebb()); p->scope() = IRScope(llvmBB,oldend); } if (statement) statement->toIR(p); } ////////////////////////////////////////////////////////////////////////////// void GotoStatement::toIR(IRState* p) { Logger::println("GotoStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); assert(tf == NULL); llvm::BasicBlock* oldend = gIR->scopeend(); llvm::BasicBlock* bb = llvm::BasicBlock::Create("aftergoto", p->topfunc(), oldend); DtoGoto(&loc, label->ident, enclosinghandler); p->scope() = IRScope(bb,oldend); } ////////////////////////////////////////////////////////////////////////////// void GotoDefaultStatement::toIR(IRState* p) { Logger::println("GotoDefaultStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); llvm::BasicBlock* oldend = gIR->scopeend(); llvm::BasicBlock* bb = llvm::BasicBlock::Create("aftergotodefault", p->topfunc(), oldend); assert(!p->scopereturned()); assert(sw->sdefault->bodyBB); DtoEnclosingHandlers(enclosinghandler, sw->enclosinghandler); llvm::BranchInst::Create(sw->sdefault->bodyBB, p->scopebb()); p->scope() = IRScope(bb,oldend); } ////////////////////////////////////////////////////////////////////////////// void GotoCaseStatement::toIR(IRState* p) { Logger::println("GotoCaseStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); llvm::BasicBlock* oldend = gIR->scopeend(); llvm::BasicBlock* bb = llvm::BasicBlock::Create("aftergotocase", p->topfunc(), oldend); assert(!p->scopereturned()); if (!cs->bodyBB) { cs->bodyBB = llvm::BasicBlock::Create("goto_case", p->topfunc(), p->scopeend()); } DtoEnclosingHandlers(enclosinghandler, sw->enclosinghandler); llvm::BranchInst::Create(cs->bodyBB, p->scopebb()); p->scope() = IRScope(bb,oldend); } ////////////////////////////////////////////////////////////////////////////// void WithStatement::toIR(IRState* p) { Logger::println("WithStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); assert(exp); assert(body); DValue* e = exp->toElem(p); assert(!wthis->ir.isSet()); wthis->ir.irLocal = new IrLocal(wthis); wthis->ir.irLocal->value = e->getRVal(); body->toIR(p); } ////////////////////////////////////////////////////////////////////////////// static LLConstant* generate_unique_critical_section() { const LLType* Mty = DtoMutexType(); return new llvm::GlobalVariable(Mty, false, llvm::GlobalValue::InternalLinkage, LLConstant::getNullValue(Mty), ".uniqueCS", gIR->module); } void SynchronizedStatement::toIR(IRState* p) { Logger::println("SynchronizedStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); // enter lock if (exp) { llsync = exp->toElem(p)->getRVal(); DtoEnterMonitor(llsync); } else { llsync = generate_unique_critical_section(); DtoEnterCritical(llsync); } // emit body body->toIR(p); // exit lock // no point in a unreachable unlock, terminating statements must insert this themselves. if (p->scopereturned()) return; else if (exp) DtoLeaveMonitor(llsync); else DtoLeaveCritical(llsync); } ////////////////////////////////////////////////////////////////////////////// void VolatileStatement::toIR(IRState* p) { Logger::println("VolatileStatement::toIR(): %s", loc.toChars()); LOG_SCOPE; if (global.params.symdebug) DtoDwarfStopPoint(loc.linnum); // mark in-volatile // FIXME // has statement if (statement != NULL) { // load-store DtoMemoryBarrier(false, true, false, false); // do statement statement->toIR(p); // no point in a unreachable barrier, terminating statements must insert this themselves. if (statement->fallOffEnd()) { // store-load DtoMemoryBarrier(false, false, true, false); } } // barrier only else { // load-store & store-load DtoMemoryBarrier(false, true, true, false); } // restore volatile state // FIXME } ////////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////////// #define STUBST(x) void x::toIR(IRState * p) {error("Statement type "#x" not implemented: %s", toChars());fatal();} //STUBST(BreakStatement); //STUBST(ForStatement); //STUBST(WithStatement); //STUBST(SynchronizedStatement); //STUBST(ReturnStatement); //STUBST(ContinueStatement); //STUBST(DefaultStatement); //STUBST(CaseStatement); //STUBST(SwitchStatement); STUBST(SwitchErrorStatement); STUBST(Statement); //STUBST(IfStatement); //STUBST(ForeachStatement); //STUBST(DoStatement); //STUBST(WhileStatement); //STUBST(ExpStatement); //STUBST(CompoundStatement); //STUBST(ScopeStatement); //STUBST(AsmStatement); //STUBST(TryCatchStatement); //STUBST(TryFinallyStatement); //STUBST(VolatileStatement); //STUBST(LabelStatement); //STUBST(ThrowStatement); //STUBST(GotoCaseStatement); //STUBST(GotoDefaultStatement); //STUBST(GotoStatement); //STUBST(UnrolledLoopStatement); //STUBST(OnScopeStatement);