void HeterotbbTransform::copy_function (Function* NF, Function* F) {
DenseMap<const Value*, Value *> ValueMap;
// Get the names of the parameters for old function
for(Function::arg_iterator FI = F->arg_begin(), FE=F->arg_end(), DI=NF->arg_begin(); FE!=FI; ++FI,++DI) {
DI->setName(FI->getName());
ValueMap[FI]=DI;
}
for (Function::const_iterator BI=F->begin(),BE = F->end(); BI != BE; ++BI) {
const BasicBlock &FBB = *BI;
BasicBlock *NFBB = BasicBlock::Create(FBB.getContext(), "", NF);
ValueMap[&FBB] = NFBB;
if (FBB.hasName()) {
NFBB->setName(FBB.getName());
//DEBUG(dbgs()<<NFBB->getName()<<"\n");
}
for (BasicBlock::const_iterator II = FBB.begin(), IE = FBB.end(); II != IE; ++II) {
Instruction *NFInst = II->clone(/*F->getContext()*/);
if (II->hasName()) NFInst->setName(II->getName());
const Instruction *FInst = &(*II);
rewrite_instruction((Instruction *)FInst, NFInst, ValueMap);
NFBB->getInstList().push_back(NFInst);
ValueMap[II] = NFInst;
}
}
// Remap the instructions again to take care of forward jumps
for (Function::iterator BB = NF->begin(), BE=NF->end(); BB != BE; ++ BB) {
for (BasicBlock::iterator II = BB->begin(); II != BB->end(); ++II) {
int opIdx = 0;
//DEBUG(dbgs()<<*II<<"\n");
for (User::op_iterator i = II->op_begin(), e = II->op_end(); i != e; ++i, opIdx++) {
Value *V = *i;
if (ValueMap[V] != NULL) {
II->setOperand(opIdx, ValueMap[V]);
}
}
}
}
//NF->dump();
}
/// eliminateUnconditionalBranch - Clone the instructions from the destination
/// block into the source block, eliminating the specified unconditional branch.
/// If the destination block defines values used by successors of the dest
/// block, we may need to insert PHI nodes.
///
void TailDup::eliminateUnconditionalBranch(BranchInst *Branch) {
BasicBlock *SourceBlock = Branch->getParent();
BasicBlock *DestBlock = Branch->getSuccessor(0);
assert(SourceBlock != DestBlock && "Our predicate is broken!");
DEBUG(errs() << "TailDuplication[" << SourceBlock->getParent()->getName()
<< "]: Eliminating branch: " << *Branch);
// See if we can avoid duplicating code by moving it up to a dominator of both
// blocks.
if (BasicBlock *DomBlock = FindObviousSharedDomOf(SourceBlock, DestBlock)) {
DEBUG(errs() << "Found shared dominator: " << DomBlock->getName() << "\n");
// If there are non-phi instructions in DestBlock that have no operands
// defined in DestBlock, and if the instruction has no side effects, we can
// move the instruction to DomBlock instead of duplicating it.
BasicBlock::iterator BBI = DestBlock->getFirstNonPHI();
while (!isa<TerminatorInst>(BBI)) {
Instruction *I = BBI++;
bool CanHoist = I->isSafeToSpeculativelyExecute() &&
!I->mayReadFromMemory();
if (CanHoist) {
for (unsigned op = 0, e = I->getNumOperands(); op != e; ++op)
if (Instruction *OpI = dyn_cast<Instruction>(I->getOperand(op)))
if (OpI->getParent() == DestBlock ||
(isa<InvokeInst>(OpI) && OpI->getParent() == DomBlock)) {
CanHoist = false;
break;
}
if (CanHoist) {
// Remove from DestBlock, move right before the term in DomBlock.
DestBlock->getInstList().remove(I);
DomBlock->getInstList().insert(DomBlock->getTerminator(), I);
DEBUG(errs() << "Hoisted: " << *I);
}
}
}
}
// Tail duplication can not update SSA properties correctly if the values
// defined in the duplicated tail are used outside of the tail itself. For
// this reason, we spill all values that are used outside of the tail to the
// stack.
for (BasicBlock::iterator I = DestBlock->begin(); I != DestBlock->end(); ++I)
if (I->isUsedOutsideOfBlock(DestBlock)) {
// We found a use outside of the tail. Create a new stack slot to
// break this inter-block usage pattern.
DemoteRegToStack(*I);
}
// We are going to have to map operands from the original block B to the new
// copy of the block B'. If there are PHI nodes in the DestBlock, these PHI
// nodes also define part of this mapping. Loop over these PHI nodes, adding
// them to our mapping.
//
std::map<Value*, Value*> ValueMapping;
BasicBlock::iterator BI = DestBlock->begin();
bool HadPHINodes = isa<PHINode>(BI);
for (; PHINode *PN = dyn_cast<PHINode>(BI); ++BI)
ValueMapping[PN] = PN->getIncomingValueForBlock(SourceBlock);
// Clone the non-phi instructions of the dest block into the source block,
// keeping track of the mapping...
//
for (; BI != DestBlock->end(); ++BI) {
Instruction *New = BI->clone();
New->setName(BI->getName());
SourceBlock->getInstList().push_back(New);
ValueMapping[BI] = New;
}
// Now that we have built the mapping information and cloned all of the
// instructions (giving us a new terminator, among other things), walk the new
// instructions, rewriting references of old instructions to use new
// instructions.
//
BI = Branch; ++BI; // Get an iterator to the first new instruction
for (; BI != SourceBlock->end(); ++BI)
for (unsigned i = 0, e = BI->getNumOperands(); i != e; ++i) {
std::map<Value*, Value*>::const_iterator I =
ValueMapping.find(BI->getOperand(i));
if (I != ValueMapping.end())
BI->setOperand(i, I->second);
}
// Next we check to see if any of the successors of DestBlock had PHI nodes.
// If so, we need to add entries to the PHI nodes for SourceBlock now.
for (succ_iterator SI = succ_begin(DestBlock), SE = succ_end(DestBlock);
SI != SE; ++SI) {
BasicBlock *Succ = *SI;
for (BasicBlock::iterator PNI = Succ->begin(); isa<PHINode>(PNI); ++PNI) {
PHINode *PN = cast<PHINode>(PNI);
// Ok, we have a PHI node. Figure out what the incoming value was for the
// DestBlock.
Value *IV = PN->getIncomingValueForBlock(DestBlock);
// Remap the value if necessary...
std::map<Value*, Value*>::const_iterator I = ValueMapping.find(IV);
if (I != ValueMapping.end())
IV = I->second;
PN->addIncoming(IV, SourceBlock);
}
}
// Next, remove the old branch instruction, and any PHI node entries that we
// had.
BI = Branch; ++BI; // Get an iterator to the first new instruction
DestBlock->removePredecessor(SourceBlock); // Remove entries in PHI nodes...
SourceBlock->getInstList().erase(Branch); // Destroy the uncond branch...
// Final step: now that we have finished everything up, walk the cloned
// instructions one last time, constant propagating and DCE'ing them, because
// they may not be needed anymore.
//
if (HadPHINodes) {
while (BI != SourceBlock->end()) {
Instruction *Inst = BI++;
if (isInstructionTriviallyDead(Inst))
Inst->eraseFromParent();
else if (Constant *C = ConstantFoldInstruction(Inst)) {
Inst->replaceAllUsesWith(C);
Inst->eraseFromParent();
}
}
}
++NumEliminated; // We just killed a branch!
}
void HeterotbbTransform::gen_opt_code_per_f (Function* NF, Function* F) {
// Get the names of the parameters for old function
Function::arg_iterator FI = F->arg_begin();
Argument *classname = &*FI;
FI++;
Argument *numiters = &*FI;
// Set the names of the parameters for new function
Function::arg_iterator DestI = NF->arg_begin();
DestI->setName(classname->getName());
Argument *class_name = &(*DestI);
//second argument
DestI++;
DestI->setName(numiters->getName());
Argument *num_iters = &(*DestI);
#ifdef EXPLICIT_REWRITE
DenseMap<const Value*, Value *> ValueMap;
#else
ValueToValueMapTy ValueMap;
#endif
#if EXPLICIT_REWRITE
//get the old basic block and create a new one
Function::const_iterator BI = F->begin();
const BasicBlock &FB = *BI;
BasicBlock *NFBB = BasicBlock::Create(FB.getContext(), "", NF);
if (FB.hasName()) {
NFBB->setName(FB.getName());
//DEBUG(dbgs()<<FB.getName()<<"\n");
}
ValueMap[&FB] = NFBB;
ValueMap[numiters] = num_iters;
//must create a new instruction which casts i32* back to the class name
CastInst *StrucRevCast = CastInst::Create(Instruction::BitCast, class_name,
classname->getType(), classname->getName(), NFBB);
ValueMap[classname] = StrucRevCast;
for (BasicBlock::const_iterator II = FB.begin(), IE = FB.end(); II != IE; ++II) {
Instruction *NFInst = II->clone(/*F->getContext()*/);
// DEBUG(dbgs()<<*II<<"\n");
if (II->hasName()) NFInst->setName(II->getName());
const Instruction *FInst = &(*II);
rewrite_instruction((Instruction *)FInst, NFInst, ValueMap);
NFBB->getInstList().push_back(NFInst);
ValueMap[II] = NFInst;
}
BI++;
for (Function::const_iterator /*BI=F->begin(),*/BE = F->end(); BI != BE; ++BI) {
const BasicBlock &FBB = *BI;
BasicBlock *NFBB = BasicBlock::Create(FBB.getContext(), "", NF);
ValueMap[&FBB] = NFBB;
if (FBB.hasName()) {
NFBB->setName(FBB.getName());
//DEBUG(dbgs()<<NFBB->getName()<<"\n");
}
for (BasicBlock::const_iterator II = FBB.begin(), IE = FBB.end(); II != IE; ++II) {
Instruction *NFInst = II->clone(/*F->getContext()*/);
if (II->hasName()) NFInst->setName(II->getName());
const Instruction *FInst = &(*II);
rewrite_instruction((Instruction *)FInst, NFInst, ValueMap);
NFBB->getInstList().push_back(NFInst);
ValueMap[II] = NFInst;
}
}
// Remap the instructions again to take care of forward jumps
for (Function::iterator BB = NF->begin(), BE=NF->end(); BB != BE; ++ BB) {
for (BasicBlock::iterator II = BB->begin(); II != BB->end(); ++II) {
int opIdx = 0;
//DEBUG(dbgs()<<*II<<"\n");
for (User::op_iterator i = II->op_begin(), e = II->op_end(); i != e; ++i, opIdx++) {
Value *V = *i;
if (ValueMap[V] != NULL) {
II->setOperand(opIdx, ValueMap[V]);
}
}
}
}
#else
Function::const_iterator BI = F->begin();
const BasicBlock &FB = *BI;
BasicBlock *NFBB = BasicBlock::Create(FB.getContext(), "", NF);
if (FB.hasName()) {
NFBB->setName(FB.getName());
}
ValueMap[&FB] = NFBB;
CastInst *StrucRevCast = CastInst::Create(Instruction::BitCast, class_name,
classname->getType(), classname->getName(), NFBB);
ValueMap[classname] = StrucRevCast;
ValueMap[numiters] = num_iters;
CloneFunctionWithExistingBBInto(NF, NFBB, F, ValueMap, "");
#endif
}
bool GenericToNVVM::runOnModule(Module &M) {
// Create a clone of each global variable that has the default address space.
// The clone is created with the global address space specifier, and the pair
// of original global variable and its clone is placed in the GVMap for later
// use.
for (Module::global_iterator I = M.global_begin(), E = M.global_end();
I != E;) {
GlobalVariable *GV = &*I++;
if (GV->getType()->getAddressSpace() == llvm::ADDRESS_SPACE_GENERIC &&
!llvm::isTexture(*GV) && !llvm::isSurface(*GV) &&
!llvm::isSampler(*GV) && !GV->getName().startswith("llvm.")) {
GlobalVariable *NewGV = new GlobalVariable(
M, GV->getValueType(), GV->isConstant(),
GV->getLinkage(),
GV->hasInitializer() ? GV->getInitializer() : nullptr,
"", GV, GV->getThreadLocalMode(), llvm::ADDRESS_SPACE_GLOBAL);
NewGV->copyAttributesFrom(GV);
GVMap[GV] = NewGV;
}
}
// Return immediately, if every global variable has a specific address space
// specifier.
if (GVMap.empty()) {
return false;
}
// Walk through the instructions in function defitinions, and replace any use
// of original global variables in GVMap with a use of the corresponding
// copies in GVMap. If necessary, promote constants to instructions.
for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I) {
if (I->isDeclaration()) {
continue;
}
IRBuilder<> Builder(I->getEntryBlock().getFirstNonPHIOrDbg());
for (Function::iterator BBI = I->begin(), BBE = I->end(); BBI != BBE;
++BBI) {
for (BasicBlock::iterator II = BBI->begin(), IE = BBI->end(); II != IE;
++II) {
for (unsigned i = 0, e = II->getNumOperands(); i < e; ++i) {
Value *Operand = II->getOperand(i);
if (isa<Constant>(Operand)) {
II->setOperand(
i, remapConstant(&M, &*I, cast<Constant>(Operand), Builder));
}
}
}
}
ConstantToValueMap.clear();
}
// Copy GVMap over to a standard value map.
ValueToValueMapTy VM;
for (auto I = GVMap.begin(), E = GVMap.end(); I != E; ++I)
VM[I->first] = I->second;
// Walk through the metadata section and update the debug information
// associated with the global variables in the default address space.
for (NamedMDNode &I : M.named_metadata()) {
remapNamedMDNode(VM, &I);
}
// Walk through the global variable initializers, and replace any use of
// original global variables in GVMap with a use of the corresponding copies
// in GVMap. The copies need to be bitcast to the original global variable
// types, as we cannot use cvta in global variable initializers.
for (GVMapTy::iterator I = GVMap.begin(), E = GVMap.end(); I != E;) {
GlobalVariable *GV = I->first;
GlobalVariable *NewGV = I->second;
// Remove GV from the map so that it can be RAUWed. Note that
// DenseMap::erase() won't invalidate any iterators but this one.
auto Next = std::next(I);
GVMap.erase(I);
I = Next;
Constant *BitCastNewGV = ConstantExpr::getPointerCast(NewGV, GV->getType());
// At this point, the remaining uses of GV should be found only in global
// variable initializers, as other uses have been already been removed
// while walking through the instructions in function definitions.
GV->replaceAllUsesWith(BitCastNewGV);
std::string Name = GV->getName();
GV->eraseFromParent();
NewGV->setName(Name);
}
assert(GVMap.empty() && "Expected it to be empty by now");
return true;
}
void SuperBlock::fixSideEntrances() {
// due to merging of BBs, some superblocks may have 1 BB remaining
list<map<BasicBlock*, list<BasicBlock*> >::iterator > delSuperBlocks;
for (map<BasicBlock*, list<BasicBlock*> >::iterator sp = superBlocks.begin(),
sp_e = superBlocks.end(); sp != sp_e; ++sp) {
// we need to keep track of the predecessor of the current basic block
// being checked
BasicBlock* prev = sp->first;
// don't clone basic blocks if the code size threshold is achieved
if (currCodeSize/originalCodeSize > CODE_EXPANSION_THRESHOLD) {
break;
}
// the first basic block for a superblock need not be duplicated
for (list<BasicBlock*>::iterator bb = sp->second.begin(),
bb_e = sp->second.end(); bb != bb_e; ++bb) {
// first, collect all predecessors for this BB
// (note: we could not just iterate through as the predecessor set may
// change
list<BasicBlock*> predBBs;
for (pred_iterator pred = pred_begin(*bb), pred_e = pred_end(*bb);
pred != pred_e; ++pred) {
predBBs.push_back(*pred);
}
// now, walk through all predecessors of this current basic block
BasicBlock* clonedBB = NULL;
for (list<BasicBlock*>::iterator pred = predBBs.begin(),
pred_e = predBBs.end(); pred != pred_e; ++pred) {
// if it is not the predecessor of this current basic block present in
// the superblock, duplicate!
if (*pred != prev) {
// there is no need to clone this BB multiple times
if (clonedBB == NULL) {
ValueToValueMapTy vmap;
// clone this basic block, and place the corresponding code after
// the last BB of this superblock
clonedBB = CloneBasicBlock(*bb, vmap, ".cloned",
(*bb)->getParent());
vmap[*bb] = clonedBB;
/*
errs() << "@@ BEFORE: " << *clonedBB << "\n";
// fix phi nodes in the cloned BB
for (BasicBlock::iterator I = clonedBB->begin(); isa<PHINode>(I); ++I) {
PHINode* PN = dyn_cast<PHINode>(I);
int bbIdx = PN->getBasicBlockIndex(prev);
if (bbIdx != -1) {
PN->removeIncomingValue(bbIdx, false);
}
}
*/
// add size of duplicated BBs to total code size count
currCodeSize += clonedBB->size();
// modify operands in this basic block
for (BasicBlock::iterator instr = clonedBB->begin(),
instr_e = clonedBB->end(); instr != instr_e; ++instr) {
for (unsigned idx = 0, num_ops = instr->getNumOperands();
idx < num_ops; ++idx) {
Value* op = instr->getOperand(idx);
ValueToValueMapTy::iterator op_it = vmap.find(op);
if (op_it != vmap.end()) {
instr->setOperand(idx, op_it->second);
}
}
}
}
// remove phi nodes into this BB in the trace
/*
for (BasicBlock::iterator I = (*bb)->begin(); isa<PHINode>(I); ++I) {
PHINode* PN = dyn_cast<PHINode>(I);
int bbIdx = PN->getBasicBlockIndex(*pred);
if (bbIdx != -1) {
PN->removeIncomingValue(bbIdx, false);
}
}
*/
// modify the branch instruction of the predecessor not in the superblock to
// branch to the cloned basic block
Instruction* br_instr = (*pred)->getTerminator();
br_instr->replaceUsesOfWith((Value*)*bb, (Value*)clonedBB);
}
}
// determine if we can merge the BB (definitely can be merged), and its clone
// with theirpredecessors
if (clonedBB != NULL) {
if (MergeBlockIntoPredecessor(*bb, this)) {
// since we have merged this BB, delete from our superblock mappings
partOfSuperBlock.erase(*bb);
bb = sp->second.erase(bb);
--bb;
if (sp->second.empty()) {
delSuperBlocks.push_back(sp);
}
}
MergeBlockIntoPredecessor(clonedBB, this);
}
prev = *bb;
}
}
// erase some superblocks (which only have 1 BB remaining)
for (list<map<BasicBlock*, list<BasicBlock*> >::iterator >::iterator del =
delSuperBlocks.begin(), del_e = delSuperBlocks.end(); del != del_e;
++del) {
superBlocks.erase(*del);
}
}
/**
* Generate code for
*/
void HeteroOMPTransform::gen_code_per_f (Function* NF, Function* F, Instruction *max_threads){
Function::arg_iterator FI = F->arg_begin();
Argument *ctxname = &*FI;
Function::arg_iterator DestI = NF->arg_begin();
DestI->setName(ctxname->getName());
Argument *ctx_name = &(*DestI);
DestI++;
DestI->setName("tid");
Argument *num_iters = &(*DestI);
#ifdef EXPLICIT_REWRITE
DenseMap<const Value*, Value *> ValueMap;
#else
ValueToValueMapTy ValueMap;
#endif
//get the old basic block and create a new one
Function::const_iterator BI = F->begin();
const BasicBlock &FB = *BI;
BasicBlock *NFBB = BasicBlock::Create(FB.getContext(), "", NF);
if (FB.hasName()){
NFBB->setName(FB.getName());
}
ValueMap[&FB] = NFBB;
//ValueMap[numiters] = num_iters;
ValueMap[ctxname] = ctx_name;
#if EXPLICIT_REWRITE
for (BasicBlock::const_iterator II = FB.begin(), IE = FB.end(); II != IE; ++II) {
Instruction *NFInst = II->clone(/*F->getContext()*/);
// DEBUG(dbgs()<<*II<<"\n");
if (II->hasName()) NFInst->setName(II->getName());
const Instruction *FInst = &(*II);
rewrite_instruction((Instruction *)FInst, NFInst, ValueMap);
NFBB->getInstList().push_back(NFInst);
ValueMap[II] = NFInst;
}
BI++;
for (Function::const_iterator /*BI=F->begin(),*/BE = F->end();BI != BE; ++BI) {
const BasicBlock &FBB = *BI;
BasicBlock *NFBB = BasicBlock::Create(FBB.getContext(), "", NF);
ValueMap[&FBB] = NFBB;
if (FBB.hasName()){
NFBB->setName(FBB.getName());
//DEBUG(dbgs()<<NFBB->getName()<<"\n");
}
for (BasicBlock::const_iterator II = FBB.begin(), IE = FBB.end(); II != IE; ++II) {
Instruction *NFInst = II->clone(/*F->getContext()*/);
if (II->hasName()) NFInst->setName(II->getName());
const Instruction *FInst = &(*II);
rewrite_instruction((Instruction *)FInst, NFInst, ValueMap);
NFBB->getInstList().push_back(NFInst);
ValueMap[II] = NFInst;
}
}
// Remap the instructions again to take care of forward jumps
for (Function::iterator BB = NF->begin(), BE=NF->end(); BB != BE; ++ BB) {
for (BasicBlock::iterator II = BB->begin(); II != BB->end(); ++II){
int opIdx = 0;
//DEBUG(dbgs()<<*II<<"\n");
for (User::op_iterator i = II->op_begin(), e = II->op_end(); i != e; ++i, opIdx++) {
Value *V = *i;
if (ValueMap[V] != NULL) {
II->setOperand(opIdx, ValueMap[V]);
}
}
}
}
#else
SmallVector<ReturnInst*, 8> Returns; // Ignore returns cloned.
CloneFunctionInto(NF, F, ValueMap, false, Returns, "");
#endif
//max_threads->dump();
/* Remap openmp omp_num_threads() and omp_thread_num() */
/*
* define internal void @_Z20initialize_variablesiPfS_.omp_fn.4(i8* nocapture %.omp_data_i) nounwind ssp {
* entry:
* %0 = bitcast i8* %.omp_data_i to i32* ; <i32*> [#uses=1]
* %1 = load i32* %0, align 8 ; <i32> [#uses=2]
* %2 = tail call i32 @omp_get_num_threads() nounwind readnone ; <i32> [#uses=2]
* %3 = tail call i32 @omp_get_thread_num() nounwind readnone ; <i32> [#uses=2]
%4 = sdiv i32 %1, %2
%5 = mul nsw i32 %4, %2
%6 = icmp ne i32 %5, %1
%7 = zext i1 %6 to i32
*/
vector<Instruction *> toDelete;
for (Function::iterator BB = NF->begin(), BE=NF->end(); BB != BE; ++ BB) {
for (BasicBlock::iterator II = BB->begin(); II != BB->end(); ++II){
if (isa<CallInst>(II)) {
CallSite CI(cast<Instruction>(II));
if (CI.getCalledFunction() != NULL){
string called_func_name = CI.getCalledFunction()->getName();
if (called_func_name == OMP_GET_NUM_THREADS_NAME && CI.arg_size() == 0) {
II->replaceAllUsesWith(ValueMap[max_threads]);
toDelete.push_back(II);
}
else if (called_func_name == OMP_GET_THREAD_NUM_NAME && CI.arg_size() == 0) {
II->replaceAllUsesWith(num_iters);
toDelete.push_back(II);
}
}
}
}
}
/* Delete the last branch instruction of the first basic block -- Assuming it is safe */
Function::iterator nfBB = NF->begin();
TerminatorInst *lastI = nfBB->getTerminator();
BranchInst *bI;
BasicBlock *returnBlock;
if ((bI = dyn_cast<BranchInst>(lastI)) && bI->isConditional() &&
(returnBlock = bI->getSuccessor(1)) &&
(returnBlock->getName() == "return")) {
/* modify to a unconditional branch to next basic block and not return */
Instruction *bbI = BranchInst::Create(bI->getSuccessor(0),lastI);
bbI->dump();
toDelete.push_back(lastI);
}
//NF->dump();
while(!toDelete.empty()) {
Instruction *g = toDelete.back();
//g->replaceAllUsesWith(UndefValue::get(g->getType()));
toDelete.pop_back();
g->eraseFromParent();
}
//NF->dump();
}
bool ReplaceNopCastsAndByteSwaps::processBasicBlock(BasicBlock& BB)
{
bool Changed = false;
/**
* First pass: replace nopCasts with bitcasts and bswap intrinsics with logic operations
*/
for ( BasicBlock::iterator it = BB.begin(); it != BB.end(); )
{
Instruction * Inst = it++;
if (isNopCast(Inst) )
{
assert( isa<CallInst>(Inst) );
CallInst * call = cast<CallInst>(Inst);
if ( TypeSupport::isClientType( call->getType()) )
{
llvm::errs() << "Cast of client type: " << *call << "\n";
continue;
}
if ( TypeSupport::isClientType( call->getArgOperand(0)->getType()) )
{
llvm::errs() << "Cast of client type: " << *call->getArgOperand(0) << "\n";
continue;
}
ReplaceInstWithInst( call, BitCastInst::Create( Instruction::CastOps::BitCast, call->getArgOperand(0), call->getType() ) );
Changed = true;
}
else if( IntrinsicInst* II = dyn_cast<IntrinsicInst>(Inst) )
{
if(II->getIntrinsicID() == Intrinsic::bswap)
{
IL->LowerIntrinsicCall(II);
Changed = true;
}
else if(II->getIntrinsicID() == Intrinsic::cheerp_deallocate)
{
II->eraseFromParent();
Changed = true;
}
}
}
/**
* Second pass: collapse bitcasts of bitcasts.
*
* Note: this might leave some dead instruction around, but we don't care since bitcasts are inlined anyway
*/
for ( BasicBlock::iterator it = BB.begin(); it != BB.end(); ++it )
{
if ( isa<BitCastInst>(it) )
{
while ( BitCastInst * src = dyn_cast<BitCastInst>(it->getOperand(0) ) )
{
it->setOperand(0, src->getOperand(0) );
Changed = true;
}
}
}
return Changed;
}
