Add in the first iteration of support for llvm/clang/lldb to allow variable per address space pointer sizes to be optimized correctly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165726 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/InstCombine/InstCombineCasts.cpp

@@ -1293,15 +1293,16 @@ Instruction *InstCombiner::visitIntToPtr(IntToPtrInst &CI) {
   // If the source integer type is not the intptr_t type for this target, do a
   // trunc or zext to the intptr_t type, then inttoptr of it.  This allows the
   // cast to be exposed to other transforms.
+  unsigned AS = CI.getAddressSpace();
   if (TD) {
     if (CI.getOperand(0)->getType()->getScalarSizeInBits() >
-        TD->getPointerSizeInBits()) {
+        TD->getPointerSizeInBits(AS)) {
       Value *P = Builder->CreateTrunc(CI.getOperand(0),
                                       TD->getIntPtrType(CI.getContext()));
       return new IntToPtrInst(P, CI.getType());
     }
     if (CI.getOperand(0)->getType()->getScalarSizeInBits() <
-        TD->getPointerSizeInBits()) {
+        TD->getPointerSizeInBits(AS)) {
       Value *P = Builder->CreateZExt(CI.getOperand(0),
                                      TD->getIntPtrType(CI.getContext()));
       return new IntToPtrInst(P, CI.getType());
@@ -1368,13 +1369,14 @@ Instruction *InstCombiner::visitPtrToInt(PtrToIntInst &CI) {
   // If the destination integer type is not the intptr_t type for this target,
   // do a ptrtoint to intptr_t then do a trunc or zext.  This allows the cast
   // to be exposed to other transforms.
+  unsigned AS = CI.getPointerAddressSpace();
   if (TD) {
-    if (CI.getType()->getScalarSizeInBits() < TD->getPointerSizeInBits()) {
+    if (CI.getType()->getScalarSizeInBits() < TD->getPointerSizeInBits(AS)) {
       Value *P = Builder->CreatePtrToInt(CI.getOperand(0),
                                          TD->getIntPtrType(CI.getContext()));
       return new TruncInst(P, CI.getType());
     }
-    if (CI.getType()->getScalarSizeInBits() > TD->getPointerSizeInBits()) {
+    if (CI.getType()->getScalarSizeInBits() > TD->getPointerSizeInBits(AS)) {
       Value *P = Builder->CreatePtrToInt(CI.getOperand(0),
                                          TD->getIntPtrType(CI.getContext()));
       return new ZExtInst(P, CI.getType());

lib/Transforms/InstCombine/InstCombineCompares.cpp

@@ -365,11 +365,12 @@ FoldCmpLoadFromIndexedGlobal(GetElementPtrInst *GEP, GlobalVariable *GV,
   // order the state machines in complexity of the generated code.
   Value *Idx = GEP->getOperand(2);
 
+  unsigned AS = GEP->getPointerAddressSpace();
   // If the index is larger than the pointer size of the target, truncate the
   // index down like the GEP would do implicitly.  We don't have to do this for
   // an inbounds GEP because the index can't be out of range.
   if (!GEP->isInBounds() &&
-      Idx->getType()->getPrimitiveSizeInBits() > TD->getPointerSizeInBits())
+      Idx->getType()->getPrimitiveSizeInBits() > TD->getPointerSizeInBits(AS))
     Idx = Builder->CreateTrunc(Idx, TD->getIntPtrType(Idx->getContext()));
 
   // If the comparison is only true for one or two elements, emit direct
@@ -528,10 +529,11 @@ static Value *EvaluateGEPOffsetExpression(User *GEP, InstCombiner &IC) {
     }
   }
 
+  unsigned AS = cast<GetElementPtrInst>(GEP)->getPointerAddressSpace();
   // Okay, we know we have a single variable index, which must be a
   // pointer/array/vector index.  If there is no offset, life is simple, return
   // the index.
-  unsigned IntPtrWidth = TD.getPointerSizeInBits();
+  unsigned IntPtrWidth = TD.getPointerSizeInBits(AS);
   if (Offset == 0) {
     // Cast to intptrty in case a truncation occurs.  If an extension is needed,
     // we don't need to bother extending: the extension won't affect where the
@@ -1552,7 +1554,8 @@ Instruction *InstCombiner::visitICmpInstWithCastAndCast(ICmpInst &ICI) {
   // Turn icmp (ptrtoint x), (ptrtoint/c) into a compare of the input if the
   // integer type is the same size as the pointer type.
   if (TD && LHSCI->getOpcode() == Instruction::PtrToInt &&
-      TD->getPointerSizeInBits() ==
+      TD->getPointerSizeInBits(
+        cast<PtrToIntInst>(LHSCI)->getPointerAddressSpace()) ==
          cast<IntegerType>(DestTy)->getBitWidth()) {
     Value *RHSOp = 0;
     if (Constant *RHSC = dyn_cast<Constant>(ICI.getOperand(1))) {

lib/Transforms/Instrumentation/AddressSanitizer.cpp

@@ -742,7 +742,7 @@ bool AddressSanitizer::runOnModule(Module &M) {
   BL.reset(new BlackList(ClBlackListFile));
 
   C = &(M.getContext());
-  LongSize = TD->getPointerSizeInBits();
+  LongSize = TD->getPointerSizeInBits(0);
   IntptrTy = Type::getIntNTy(*C, LongSize);
   IntptrPtrTy = PointerType::get(IntptrTy, 0);
 

lib/Transforms/Scalar/MemCpyOptimizer.cpp

@@ -174,10 +174,11 @@ bool MemsetRange::isProfitableToUseMemset(const DataLayout &TD) const {
   // this width can be stored.  If so, check to see whether we will end up
   // actually reducing the number of stores used.
   unsigned Bytes = unsigned(End-Start);
-  unsigned NumPointerStores = Bytes/TD.getPointerSize();
+  unsigned AS = cast<StoreInst>(TheStores[0])->getPointerAddressSpace();
+  unsigned NumPointerStores = Bytes/TD.getPointerSize(AS);
 
   // Assume the remaining bytes if any are done a byte at a time.
-  unsigned NumByteStores = Bytes - NumPointerStores*TD.getPointerSize();
+  unsigned NumByteStores = Bytes - NumPointerStores*TD.getPointerSize(AS);
 
   // If we will reduce the # stores (according to this heuristic), do the
   // transformation.  This encourages merging 4 x i8 -> i32 and 2 x i16 -> i32

lib/Transforms/Scalar/SROA.cpp

@@ -447,6 +447,7 @@ protected:
 
   bool computeConstantGEPOffset(GetElementPtrInst &GEPI, int64_t &GEPOffset) {
     GEPOffset = Offset;
+    unsigned int AS = GEPI.getPointerAddressSpace();
     for (gep_type_iterator GTI = gep_type_begin(GEPI), GTE = gep_type_end(GEPI);
          GTI != GTE; ++GTI) {
       ConstantInt *OpC = dyn_cast<ConstantInt>(GTI.getOperand());
@@ -476,7 +477,7 @@ protected:
         continue;
       }
 
-      APInt Index = OpC->getValue().sextOrTrunc(TD.getPointerSizeInBits());
+      APInt Index = OpC->getValue().sextOrTrunc(TD.getPointerSizeInBits(AS));
       Index *= APInt(Index.getBitWidth(),
                      TD.getTypeAllocSize(GTI.getIndexedType()));
       Index += APInt(Index.getBitWidth(), (uint64_t)GEPOffset,
@@ -1784,7 +1785,9 @@ static Value *getNaturalGEPWithType(IRBuilder<> &IRB, const DataLayout &TD,
       break;
     if (SequentialType *SeqTy = dyn_cast<SequentialType>(ElementTy)) {
       ElementTy = SeqTy->getElementType();
-      Indices.push_back(IRB.getInt(APInt(TD.getPointerSizeInBits(), 0)));
+      Indices.push_back(IRB.getInt(APInt(TD.getPointerSizeInBits(
+                ElementTy->isPointerTy() ? 
+                cast<PointerType>(ElementTy)->getAddressSpace(): 0), 0)));
     } else if (StructType *STy = dyn_cast<StructType>(ElementTy)) {
       if (STy->element_begin() == STy->element_end())
         break; // Nothing left to descend into.
@@ -2239,7 +2242,8 @@ private:
 
   Value *getAdjustedAllocaPtr(IRBuilder<> &IRB, Type *PointerTy) {
     assert(BeginOffset >= NewAllocaBeginOffset);
-    APInt Offset(TD.getPointerSizeInBits(), BeginOffset - NewAllocaBeginOffset);
+    unsigned AS = cast<PointerType>(PointerTy)->getAddressSpace();
+    APInt Offset(TD.getPointerSizeInBits(AS), BeginOffset - NewAllocaBeginOffset);
     return getAdjustedPtr(IRB, TD, &NewAI, Offset, PointerTy, getName(""));
   }
 
@@ -2578,8 +2582,10 @@ private:
     const AllocaPartitioning::MemTransferOffsets &MTO
       = P.getMemTransferOffsets(II);
 
+    assert(OldPtr->getType()->isPointerTy() && "Must be a pointer type!");
+    unsigned AS = cast<PointerType>(OldPtr->getType())->getAddressSpace();
     // Compute the relative offset within the transfer.
-    unsigned IntPtrWidth = TD.getPointerSizeInBits();
+    unsigned IntPtrWidth = TD.getPointerSizeInBits(AS);
     APInt RelOffset(IntPtrWidth, BeginOffset - (IsDest ? MTO.DestBegin
                                                        : MTO.SourceBegin));
 

lib/Transforms/Utils/Local.cpp

@@ -806,7 +806,8 @@ unsigned llvm::getOrEnforceKnownAlignment(Value *V, unsigned PrefAlign,
                                           const DataLayout *TD) {
   assert(V->getType()->isPointerTy() &&
          "getOrEnforceKnownAlignment expects a pointer!");
-  unsigned BitWidth = TD ? TD->getPointerSizeInBits() : 64;
+  unsigned AS = cast<PointerType>(V->getType())->getAddressSpace();
+  unsigned BitWidth = TD ? TD->getPointerSizeInBits(AS) : 64;
   APInt KnownZero(BitWidth, 0), KnownOne(BitWidth, 0);
   ComputeMaskedBits(V, KnownZero, KnownOne, TD);
   unsigned TrailZ = KnownZero.countTrailingOnes();