return false;
Name = Name.substr(5); // Strip off "llvm."
- FunctionType *FTy = F->getFunctionType();
- Module *M = F->getParent();
-
switch (Name[0]) {
default: break;
- case 'i':
- // This upgrades the old llvm.init.trampoline to the new
- // llvm.init.trampoline and llvm.adjust.trampoline pair.
- if (Name == "init.trampoline") {
- // The new llvm.init.trampoline returns nothing.
- if (FTy->getReturnType()->isVoidTy())
- break;
-
- assert(FTy->getNumParams() == 3 && "old init.trampoline takes 3 args!");
-
- // Change the name of the old intrinsic so that we can play with its type.
- std::string NameTmp = F->getName();
- F->setName("");
- NewFn = cast<Function>(M->getOrInsertFunction(
- NameTmp,
- Type::getVoidTy(M->getContext()),
- FTy->getParamType(0), FTy->getParamType(1),
- FTy->getParamType(2), (Type *)0));
+ case 'c': {
+ if (Name.startswith("ctlz.") && F->arg_size() == 1) {
+ F->setName(Name + ".old");
+ NewFn = Intrinsic::getDeclaration(F->getParent(), Intrinsic::ctlz,
+ F->arg_begin()->getType());
return true;
}
- case 'p':
- // This upgrades the llvm.prefetch intrinsic to accept one more parameter,
- // which is a instruction / data cache identifier. The old version only
- // implicitly accepted the data version.
- if (Name == "prefetch") {
- // Don't do anything if it has the correct number of arguments already
- if (FTy->getNumParams() == 4)
- break;
-
- assert(FTy->getNumParams() == 3 && "old prefetch takes 3 args!");
- // We first need to change the name of the old (bad) intrinsic, because
- // its type is incorrect, but we cannot overload that name. We
- // arbitrarily unique it here allowing us to construct a correctly named
- // and typed function below.
- std::string NameTmp = F->getName();
- F->setName("");
- NewFn = cast<Function>(M->getOrInsertFunction(NameTmp,
- FTy->getReturnType(),
- FTy->getParamType(0),
- FTy->getParamType(1),
- FTy->getParamType(2),
- FTy->getParamType(2),
- (Type*)0));
- return true;
- }
-
- break;
- case 'x': {
- const char *NewFnName = NULL;
- // This fixes the poorly named crc32 intrinsics.
- if (Name == "x86.sse42.crc32.8")
- NewFnName = "llvm.x86.sse42.crc32.32.8";
- else if (Name == "x86.sse42.crc32.16")
- NewFnName = "llvm.x86.sse42.crc32.32.16";
- else if (Name == "x86.sse42.crc32.32")
- NewFnName = "llvm.x86.sse42.crc32.32.32";
- else if (Name == "x86.sse42.crc64.8")
- NewFnName = "llvm.x86.sse42.crc32.64.8";
- else if (Name == "x86.sse42.crc64.64")
- NewFnName = "llvm.x86.sse42.crc32.64.64";
-
- if (NewFnName) {
- F->setName(NewFnName);
- NewFn = F;
+ if (Name.startswith("cttz.") && F->arg_size() == 1) {
+ F->setName(Name + ".old");
+ NewFn = Intrinsic::getDeclaration(F->getParent(), Intrinsic::cttz,
+ F->arg_begin()->getType());
return true;
}
-
- // Calls to these instructions are transformed into unaligned loads.
- if (Name == "x86.sse.loadu.ps" || Name == "x86.sse2.loadu.dq" ||
- Name == "x86.sse2.loadu.pd")
- return true;
-
- // Calls to these instructions are transformed into nontemporal stores.
- if (Name == "x86.sse.movnt.ps" || Name == "x86.sse2.movnt.dq" ||
- Name == "x86.sse2.movnt.pd" || Name == "x86.sse2.movnt.i")
- return true;
-
break;
}
}
// upgraded intrinsic. All argument and return casting must be provided in
// order to seamlessly integrate with existing context.
void llvm::UpgradeIntrinsicCall(CallInst *CI, Function *NewFn) {
- Function *F = CI->getCalledFunction();
- LLVMContext &C = CI->getContext();
- ImmutableCallSite CS(CI);
-
- assert(F && "CallInst has no function associated with it.");
-
- if (!NewFn) {
- if (F->getName() == "llvm.x86.sse.loadu.ps" ||
- F->getName() == "llvm.x86.sse2.loadu.dq" ||
- F->getName() == "llvm.x86.sse2.loadu.pd") {
- // Convert to a native, unaligned load.
- Type *VecTy = CI->getType();
- Type *IntTy = IntegerType::get(C, 128);
- IRBuilder<> Builder(C);
- Builder.SetInsertPoint(CI->getParent(), CI);
+ assert(CI->getCalledFunction() && "Intrinsic call is not direct?");
+ if (!NewFn) return;
- Value *BC = Builder.CreateBitCast(CI->getArgOperand(0),
- PointerType::getUnqual(IntTy),
- "cast");
- LoadInst *LI = Builder.CreateLoad(BC, CI->getName());
- LI->setAlignment(1); // Unaligned load.
- BC = Builder.CreateBitCast(LI, VecTy, "new.cast");
-
- // Fix up all the uses with our new load.
- if (!CI->use_empty())
- CI->replaceAllUsesWith(BC);
-
- // Remove intrinsic.
- CI->eraseFromParent();
- } else if (F->getName() == "llvm.x86.sse.movnt.ps" ||
- F->getName() == "llvm.x86.sse2.movnt.dq" ||
- F->getName() == "llvm.x86.sse2.movnt.pd" ||
- F->getName() == "llvm.x86.sse2.movnt.i") {
- IRBuilder<> Builder(C);
- Builder.SetInsertPoint(CI->getParent(), CI);
-
- Module *M = F->getParent();
- SmallVector<Value *, 1> Elts;
- Elts.push_back(ConstantInt::get(Type::getInt32Ty(C), 1));
- MDNode *Node = MDNode::get(C, Elts);
-
- Value *Arg0 = CI->getArgOperand(0);
- Value *Arg1 = CI->getArgOperand(1);
-
- // Convert the type of the pointer to a pointer to the stored type.
- Value *BC = Builder.CreateBitCast(Arg0,
- PointerType::getUnqual(Arg1->getType()),
- "cast");
- StoreInst *SI = Builder.CreateStore(Arg1, BC);
- SI->setMetadata(M->getMDKindID("nontemporal"), Node);
- SI->setAlignment(16);
-
- // Remove intrinsic.
- CI->eraseFromParent();
- } else {
- llvm_unreachable("Unknown function for CallInst upgrade.");
- }
- return;
- }
+ LLVMContext &C = CI->getContext();
+ IRBuilder<> Builder(C);
+ Builder.SetInsertPoint(CI->getParent(), CI);
switch (NewFn->getIntrinsicID()) {
- case Intrinsic::prefetch: {
- IRBuilder<> Builder(C);
- Builder.SetInsertPoint(CI->getParent(), CI);
- llvm::Type *I32Ty = llvm::Type::getInt32Ty(CI->getContext());
-
- // Add the extra "data cache" argument
- Value *Operands[4] = { CI->getArgOperand(0), CI->getArgOperand(1),
- CI->getArgOperand(2),
- llvm::ConstantInt::get(I32Ty, 1) };
- CallInst *NewCI = CallInst::Create(NewFn, Operands,
- CI->getName(), CI);
- NewCI->setTailCall(CI->isTailCall());
- NewCI->setCallingConv(CI->getCallingConv());
- // Handle any uses of the old CallInst.
- if (!CI->use_empty())
- // Replace all uses of the old call with the new cast which has the
- // correct type.
- CI->replaceAllUsesWith(NewCI);
-
- // Clean up the old call now that it has been completely upgraded.
+ default:
+ llvm_unreachable("Unknown function for CallInst upgrade.");
+
+ case Intrinsic::ctlz:
+ case Intrinsic::cttz:
+ assert(CI->getNumArgOperands() == 1 &&
+ "Mismatch between function args and call args");
+ StringRef Name = CI->getName();
+ CI->setName(Name + ".old");
+ CI->replaceAllUsesWith(Builder.CreateCall2(NewFn, CI->getArgOperand(0),
+ Builder.getFalse(), Name));
CI->eraseFromParent();
- break;
- }
- case Intrinsic::init_trampoline: {
-
- // Transform
- // %tramp = call i8* llvm.init.trampoline (i8* x, i8* y, i8* z)
- // to
- // call void llvm.init.trampoline (i8* %x, i8* %y, i8* %z)
- // %tramp = call i8* llvm.adjust.trampoline (i8* %x)
-
- Function *AdjustTrampolineFn =
- cast<Function>(Intrinsic::getDeclaration(F->getParent(),
- Intrinsic::adjust_trampoline));
-
- IRBuilder<> Builder(C);
- Builder.SetInsertPoint(CI);
-
- Builder.CreateCall3(NewFn, CI->getArgOperand(0), CI->getArgOperand(1),
- CI->getArgOperand(2));
-
- CallInst *AdjustCall = Builder.CreateCall(AdjustTrampolineFn,
- CI->getArgOperand(0),
- CI->getName());
- if (!CI->use_empty())
- CI->replaceAllUsesWith(AdjustCall);
- CI->eraseFromParent();
- break;
- }
+ return;
}
}
}
}
-/// This function strips all debug info intrinsics, except for llvm.dbg.declare.
-/// If an llvm.dbg.declare intrinsic is invalid, then this function simply
-/// strips that use.
-void llvm::CheckDebugInfoIntrinsics(Module *M) {
- if (Function *FuncStart = M->getFunction("llvm.dbg.func.start")) {
- while (!FuncStart->use_empty())
- cast<CallInst>(FuncStart->use_back())->eraseFromParent();
- FuncStart->eraseFromParent();
- }
-
- if (Function *StopPoint = M->getFunction("llvm.dbg.stoppoint")) {
- while (!StopPoint->use_empty())
- cast<CallInst>(StopPoint->use_back())->eraseFromParent();
- StopPoint->eraseFromParent();
- }
-
- if (Function *RegionStart = M->getFunction("llvm.dbg.region.start")) {
- while (!RegionStart->use_empty())
- cast<CallInst>(RegionStart->use_back())->eraseFromParent();
- RegionStart->eraseFromParent();
- }
-
- if (Function *RegionEnd = M->getFunction("llvm.dbg.region.end")) {
- while (!RegionEnd->use_empty())
- cast<CallInst>(RegionEnd->use_back())->eraseFromParent();
- RegionEnd->eraseFromParent();
- }
-
- if (Function *Declare = M->getFunction("llvm.dbg.declare")) {
- if (!Declare->use_empty()) {
- DbgDeclareInst *DDI = cast<DbgDeclareInst>(Declare->use_back());
- if (!isa<MDNode>(DDI->getArgOperand(0)) ||
- !isa<MDNode>(DDI->getArgOperand(1))) {
- while (!Declare->use_empty()) {
- CallInst *CI = cast<CallInst>(Declare->use_back());
- CI->eraseFromParent();
- }
- Declare->eraseFromParent();
- }
- }
- }
-}
-
-/// FindExnAndSelIntrinsics - Find the eh_exception and eh_selector intrinsic
-/// calls reachable from the unwind basic block.
-static void FindExnAndSelIntrinsics(BasicBlock *BB, CallInst *&Exn,
- CallInst *&Sel,
- SmallPtrSet<BasicBlock*, 8> &Visited) {
- if (!Visited.insert(BB)) return;
-
- for (BasicBlock::iterator
- I = BB->begin(), E = BB->end(); I != E; ++I) {
- if (CallInst *CI = dyn_cast<CallInst>(I)) {
- switch (CI->getCalledFunction()->getIntrinsicID()) {
- default: break;
- case Intrinsic::eh_exception:
- assert(!Exn && "Found more than one eh.exception call!");
- Exn = CI;
- break;
- case Intrinsic::eh_selector:
- assert(!Sel && "Found more than one eh.selector call!");
- Sel = CI;
- break;
- }
-
- if (Exn && Sel) return;
- }
- }
-
- if (Exn && Sel) return;
-
- for (succ_iterator I = succ_begin(BB), E = succ_end(BB); I != E; ++I) {
- FindExnAndSelIntrinsics(*I, Exn, Sel, Visited);
- if (Exn && Sel) return;
- }
-}
-
-/// TransferClausesToLandingPadInst - Transfer the exception handling clauses
-/// from the eh_selector call to the new landingpad instruction.
-static void TransferClausesToLandingPadInst(LandingPadInst *LPI,
- CallInst *EHSel) {
- LLVMContext &Context = LPI->getContext();
- unsigned N = EHSel->getNumArgOperands();
-
- for (unsigned i = N - 1; i > 1; --i) {
- if (const ConstantInt *CI = dyn_cast<ConstantInt>(EHSel->getArgOperand(i))){
- unsigned FilterLength = CI->getZExtValue();
- unsigned FirstCatch = i + FilterLength + !FilterLength;
- assert(FirstCatch <= N && "Invalid filter length");
-
- if (FirstCatch < N)
- for (unsigned j = FirstCatch; j < N; ++j) {
- Value *Val = EHSel->getArgOperand(j);
- if (!Val->hasName() || Val->getName() != "llvm.eh.catch.all.value") {
- LPI->addClause(EHSel->getArgOperand(j));
- } else {
- GlobalVariable *GV = cast<GlobalVariable>(Val);
- LPI->addClause(GV->getInitializer());
- }
- }
-
- if (!FilterLength) {
- // Cleanup.
- LPI->setCleanup(true);
- } else {
- // Filter.
- SmallVector<Constant *, 4> TyInfo;
- TyInfo.reserve(FilterLength - 1);
- for (unsigned j = i + 1; j < FirstCatch; ++j)
- TyInfo.push_back(cast<Constant>(EHSel->getArgOperand(j)));
- ArrayType *AType =
- ArrayType::get(!TyInfo.empty() ? TyInfo[0]->getType() :
- PointerType::getUnqual(Type::getInt8Ty(Context)),
- TyInfo.size());
- LPI->addClause(ConstantArray::get(AType, TyInfo));
- }
-
- N = i;
- }
- }
-
- if (N > 2)
- for (unsigned j = 2; j < N; ++j) {
- Value *Val = EHSel->getArgOperand(j);
- if (!Val->hasName() || Val->getName() != "llvm.eh.catch.all.value") {
- LPI->addClause(EHSel->getArgOperand(j));
- } else {
- GlobalVariable *GV = cast<GlobalVariable>(Val);
- LPI->addClause(GV->getInitializer());
- }
- }
-}
-
-/// This function upgrades the old pre-3.0 exception handling system to the new
-/// one. N.B. This will be removed in 3.1.
-void llvm::UpgradeExceptionHandling(Module *M) {
- Function *EHException = M->getFunction("llvm.eh.exception");
- Function *EHSelector = M->getFunction("llvm.eh.selector");
- if (!EHException || !EHSelector)
- return;
-
- LLVMContext &Context = M->getContext();
- Type *ExnTy = PointerType::getUnqual(Type::getInt8Ty(Context));
- Type *SelTy = Type::getInt32Ty(Context);
- Type *LPadSlotTy = StructType::get(ExnTy, SelTy, NULL);
-
- // This map links the invoke instruction with the eh.exception and eh.selector
- // calls associated with it.
- DenseMap<InvokeInst*, std::pair<Value*, Value*> > InvokeToIntrinsicsMap;
- for (Module::iterator
- I = M->begin(), E = M->end(); I != E; ++I) {
- Function &F = *I;
-
- for (Function::iterator
- II = F.begin(), IE = F.end(); II != IE; ++II) {
- BasicBlock *BB = &*II;
- InvokeInst *Inst = dyn_cast<InvokeInst>(BB->getTerminator());
- if (!Inst) continue;
- BasicBlock *UnwindDest = Inst->getUnwindDest();
- if (UnwindDest->isLandingPad()) continue; // Already converted.
-
- SmallPtrSet<BasicBlock*, 8> Visited;
- CallInst *Exn = 0;
- CallInst *Sel = 0;
- FindExnAndSelIntrinsics(UnwindDest, Exn, Sel, Visited);
- assert(Exn && Sel && "Cannot find eh.exception and eh.selector calls!");
- InvokeToIntrinsicsMap[Inst] = std::make_pair(Exn, Sel);
- }
- }
-
- // This map stores the slots where the exception object and selector value are
- // stored within a function.
- DenseMap<Function*, std::pair<Value*, Value*> > FnToLPadSlotMap;
- SmallPtrSet<Instruction*, 32> DeadInsts;
- for (DenseMap<InvokeInst*, std::pair<Value*, Value*> >::iterator
- I = InvokeToIntrinsicsMap.begin(), E = InvokeToIntrinsicsMap.end();
- I != E; ++I) {
- InvokeInst *Invoke = I->first;
- BasicBlock *UnwindDest = Invoke->getUnwindDest();
- Function *F = UnwindDest->getParent();
- std::pair<Value*, Value*> EHIntrinsics = I->second;
- CallInst *Exn = cast<CallInst>(EHIntrinsics.first);
- CallInst *Sel = cast<CallInst>(EHIntrinsics.second);
-
- // Store the exception object and selector value in the entry block.
- Value *ExnSlot = 0;
- Value *SelSlot = 0;
- if (!FnToLPadSlotMap[F].first) {
- BasicBlock *Entry = &F->front();
- ExnSlot = new AllocaInst(ExnTy, "exn", Entry->getTerminator());
- SelSlot = new AllocaInst(SelTy, "sel", Entry->getTerminator());
- FnToLPadSlotMap[F] = std::make_pair(ExnSlot, SelSlot);
- } else {
- ExnSlot = FnToLPadSlotMap[F].first;
- SelSlot = FnToLPadSlotMap[F].second;
- }
-
- if (!UnwindDest->getSinglePredecessor()) {
- // The unwind destination doesn't have a single predecessor. Create an
- // unwind destination which has only one predecessor.
- BasicBlock *NewBB = BasicBlock::Create(Context, "new.lpad",
- UnwindDest->getParent());
- BranchInst::Create(UnwindDest, NewBB);
- Invoke->setUnwindDest(NewBB);
-
- // Fix up any PHIs in the original unwind destination block.
- for (BasicBlock::iterator
- II = UnwindDest->begin(); isa<PHINode>(II); ++II) {
- PHINode *PN = cast<PHINode>(II);
- int Idx = PN->getBasicBlockIndex(Invoke->getParent());
- if (Idx == -1) continue;
- PN->setIncomingBlock(Idx, NewBB);
- }
-
- UnwindDest = NewBB;
- }
-
- IRBuilder<> Builder(Context);
- Builder.SetInsertPoint(UnwindDest, UnwindDest->getFirstInsertionPt());
-
- Value *PersFn = Sel->getArgOperand(1);
- LandingPadInst *LPI = Builder.CreateLandingPad(LPadSlotTy, PersFn, 0);
- Value *LPExn = Builder.CreateExtractValue(LPI, 0);
- Value *LPSel = Builder.CreateExtractValue(LPI, 1);
- Builder.CreateStore(LPExn, ExnSlot);
- Builder.CreateStore(LPSel, SelSlot);
-
- TransferClausesToLandingPadInst(LPI, Sel);
-
- DeadInsts.insert(Exn);
- DeadInsts.insert(Sel);
- }
-
- // Replace the old intrinsic calls with the values from the landingpad
- // instruction(s). These values were stored in allocas for us to use here.
- for (DenseMap<InvokeInst*, std::pair<Value*, Value*> >::iterator
- I = InvokeToIntrinsicsMap.begin(), E = InvokeToIntrinsicsMap.end();
- I != E; ++I) {
- std::pair<Value*, Value*> EHIntrinsics = I->second;
- CallInst *Exn = cast<CallInst>(EHIntrinsics.first);
- CallInst *Sel = cast<CallInst>(EHIntrinsics.second);
- BasicBlock *Parent = Exn->getParent();
-
- std::pair<Value*,Value*> ExnSelSlots = FnToLPadSlotMap[Parent->getParent()];
-
- IRBuilder<> Builder(Context);
- Builder.SetInsertPoint(Parent, Exn);
- LoadInst *LPExn = Builder.CreateLoad(ExnSelSlots.first, "exn.load");
- LoadInst *LPSel = Builder.CreateLoad(ExnSelSlots.second, "sel.load");
-
- Exn->replaceAllUsesWith(LPExn);
- Sel->replaceAllUsesWith(LPSel);
- }
-
- // Remove the dead instructions.
- for (SmallPtrSet<Instruction*, 32>::iterator
- I = DeadInsts.begin(), E = DeadInsts.end(); I != E; ++I) {
- Instruction *Inst = *I;
- Inst->eraseFromParent();
- }
-
- // Replace calls to "llvm.eh.resume" with the 'resume' instruction. Load the
- // exception and selector values from the stored place.
- Function *EHResume = M->getFunction("llvm.eh.resume");
- if (!EHResume) return;
-
- while (!EHResume->use_empty()) {
- CallInst *Resume = cast<CallInst>(EHResume->use_back());
- BasicBlock *BB = Resume->getParent();
-
- IRBuilder<> Builder(Context);
- Builder.SetInsertPoint(BB, Resume);
-
- Value *LPadVal =
- Builder.CreateInsertValue(UndefValue::get(LPadSlotTy),
- Resume->getArgOperand(0), 0, "lpad.val");
- LPadVal = Builder.CreateInsertValue(LPadVal, Resume->getArgOperand(1),
- 1, "lpad.val");
- Builder.CreateResume(LPadVal);
-
- // Remove all instructions after the 'resume.'
- BasicBlock::iterator I = Resume;
- while (I != BB->end()) {
- Instruction *Inst = &*I++;
- Inst->eraseFromParent();
- }
- }
-}
projects / oota-llvm.git / blobdiff