[OpaquePtr] Remove uses of CreateInBoundsGEP() without element type

Remove uses of to-be-deprecated API.

Unfortunately this one mostly just makes the use of
getPointerElementType() explicit, as the correct type to use
wasn't immediately available (deriving it from QualType is left
as an excercise to the reader).

clang/lib/CodeGen/CGDecl.cpp

@@ -2246,8 +2246,9 @@ void CodeGenFunction::emitArrayDestroy(llvm::Value *begin,
 
   // Shift the address back by one element.
   llvm::Value *negativeOne = llvm::ConstantInt::get(SizeTy, -1, true);
-  llvm::Value *element = Builder.CreateInBoundsGEP(elementPast, negativeOne,
-                                                   "arraydestroy.element");
+  llvm::Value *element = Builder.CreateInBoundsGEP(
+      elementPast->getType()->getPointerElementType(), elementPast, negativeOne,
+      "arraydestroy.element");
 
   if (useEHCleanup)
     pushRegularPartialArrayCleanup(begin, element, elementType, elementAlign,
@@ -2287,8 +2288,11 @@ static void emitPartialArrayDestroy(CodeGenFunction &CGF,
     llvm::Value *zero = llvm::ConstantInt::get(CGF.SizeTy, 0);
 
     SmallVector<llvm::Value*,4> gepIndices(arrayDepth+1, zero);
-    begin = CGF.Builder.CreateInBoundsGEP(begin, gepIndices, "pad.arraybegin");
-    end = CGF.Builder.CreateInBoundsGEP(end, gepIndices, "pad.arrayend");
+    llvm::Type *elemTy = begin->getType()->getPointerElementType();
+    begin = CGF.Builder.CreateInBoundsGEP(
+        elemTy, begin, gepIndices, "pad.arraybegin");
+    end = CGF.Builder.CreateInBoundsGEP(
+        elemTy, end, gepIndices, "pad.arrayend");
   }
 
   // Destroy the array.  We don't ever need an EH cleanup because we

clang/lib/CodeGen/CGExprAgg.cpp

@@ -417,8 +417,8 @@ AggExprEmitter::VisitCXXStdInitializerListExpr(CXXStdInitializerListExpr *E) {
   LValue Start = CGF.EmitLValueForFieldInitialization(DestLV, *Field);
   llvm::Value *Zero = llvm::ConstantInt::get(CGF.PtrDiffTy, 0);
   llvm::Value *IdxStart[] = { Zero, Zero };
-  llvm::Value *ArrayStart =
-      Builder.CreateInBoundsGEP(ArrayPtr.getPointer(), IdxStart, "arraystart");
+  llvm::Value *ArrayStart = Builder.CreateInBoundsGEP(
+      ArrayPtr.getElementType(), ArrayPtr.getPointer(), IdxStart, "arraystart");
   CGF.EmitStoreThroughLValue(RValue::get(ArrayStart), Start);
   ++Field;
 
@@ -434,8 +434,8 @@ AggExprEmitter::VisitCXXStdInitializerListExpr(CXXStdInitializerListExpr *E) {
                       ArrayType->getElementType())) {
     // End pointer.
     llvm::Value *IdxEnd[] = { Zero, Size };
-    llvm::Value *ArrayEnd =
-        Builder.CreateInBoundsGEP(ArrayPtr.getPointer(), IdxEnd, "arrayend");
+    llvm::Value *ArrayEnd = Builder.CreateInBoundsGEP(
+        ArrayPtr.getElementType(), ArrayPtr.getPointer(), IdxEnd, "arrayend");
     CGF.EmitStoreThroughLValue(RValue::get(ArrayEnd), EndOrLength);
   } else if (Ctx.hasSameType(Field->getType(), Ctx.getSizeType())) {
     // Length.
@@ -484,12 +484,14 @@ void AggExprEmitter::EmitArrayInit(Address DestPtr, llvm::ArrayType *AType,
   // down a level.
   llvm::Value *zero = llvm::ConstantInt::get(CGF.SizeTy, 0);
   llvm::Value *indices[] = { zero, zero };
-  llvm::Value *begin =
-    Builder.CreateInBoundsGEP(DestPtr.getPointer(), indices, "arrayinit.begin");
+  llvm::Value *begin = Builder.CreateInBoundsGEP(
+      DestPtr.getElementType(), DestPtr.getPointer(), indices,
+      "arrayinit.begin");
 
   CharUnits elementSize = CGF.getContext().getTypeSizeInChars(elementType);
   CharUnits elementAlign =
     DestPtr.getAlignment().alignmentOfArrayElement(elementSize);
+  llvm::Type *llvmElementType = begin->getType()->getPointerElementType();
 
   // Consider initializing the array by copying from a global. For this to be
   // more efficient than per-element initialization, the size of the elements
@@ -552,7 +554,8 @@ void AggExprEmitter::EmitArrayInit(Address DestPtr, llvm::ArrayType *AType,
   for (uint64_t i = 0; i != NumInitElements; ++i) {
     // Advance to the next element.
     if (i > 0) {
-      element = Builder.CreateInBoundsGEP(element, one, "arrayinit.element");
+      element = Builder.CreateInBoundsGEP(
+          llvmElementType, element, one, "arrayinit.element");
 
       // Tell the cleanup that it needs to destroy up to this
       // element.  TODO: some of these stores can be trivially
@@ -581,14 +584,15 @@ void AggExprEmitter::EmitArrayInit(Address DestPtr, llvm::ArrayType *AType,
 
     // Advance to the start of the rest of the array.
     if (NumInitElements) {
-      element = Builder.CreateInBoundsGEP(element, one, "arrayinit.start");
+      element = Builder.CreateInBoundsGEP(
+          llvmElementType, element, one, "arrayinit.start");
       if (endOfInit.isValid()) Builder.CreateStore(element, endOfInit);
     }
 
     // Compute the end of the array.
-    llvm::Value *end = Builder.CreateInBoundsGEP(begin,
-                      llvm::ConstantInt::get(CGF.SizeTy, NumArrayElements),
-                                                 "arrayinit.end");
+    llvm::Value *end = Builder.CreateInBoundsGEP(
+        llvmElementType, begin,
+        llvm::ConstantInt::get(CGF.SizeTy, NumArrayElements), "arrayinit.end");
 
     llvm::BasicBlock *entryBB = Builder.GetInsertBlock();
     llvm::BasicBlock *bodyBB = CGF.createBasicBlock("arrayinit.body");
@@ -616,8 +620,8 @@ void AggExprEmitter::EmitArrayInit(Address DestPtr, llvm::ArrayType *AType,
     }
 
     // Move on to the next element.
-    llvm::Value *nextElement =
-      Builder.CreateInBoundsGEP(currentElement, one, "arrayinit.next");
+    llvm::Value *nextElement = Builder.CreateInBoundsGEP(
+        llvmElementType, currentElement, one, "arrayinit.next");
 
     // Tell the EH cleanup that we finished with the last element.
     if (endOfInit.isValid()) Builder.CreateStore(nextElement, endOfInit);
@@ -1779,8 +1783,9 @@ void AggExprEmitter::VisitArrayInitLoopExpr(const ArrayInitLoopExpr *E,
   // destPtr is an array*. Construct an elementType* by drilling down a level.
   llvm::Value *zero = llvm::ConstantInt::get(CGF.SizeTy, 0);
   llvm::Value *indices[] = {zero, zero};
-  llvm::Value *begin = Builder.CreateInBoundsGEP(destPtr.getPointer(), indices,
-                                                 "arrayinit.begin");
+  llvm::Value *begin = Builder.CreateInBoundsGEP(
+      destPtr.getElementType(), destPtr.getPointer(), indices,
+      "arrayinit.begin");
 
   // Prepare to special-case multidimensional array initialization: we avoid
   // emitting multiple destructor loops in that case.
@@ -1802,7 +1807,8 @@ void AggExprEmitter::VisitArrayInitLoopExpr(const ArrayInitLoopExpr *E,
   llvm::PHINode *index =
       Builder.CreatePHI(zero->getType(), 2, "arrayinit.index");
   index->addIncoming(zero, entryBB);
-  llvm::Value *element = Builder.CreateInBoundsGEP(begin, index);
+  llvm::Value *element = Builder.CreateInBoundsGEP(
+      begin->getType()->getPointerElementType(), begin, index);
 
   // Prepare for a cleanup.
   QualType::DestructionKind dtorKind = elementType.isDestructedType();

clang/lib/CodeGen/CGExprScalar.cpp

@@ -5013,14 +5013,14 @@ Value *
 CodeGenFunction::EmitCheckedInBoundsGEP(Value *Ptr, ArrayRef<Value *> IdxList,
                                         bool SignedIndices, bool IsSubtraction,
                                         SourceLocation Loc, const Twine &Name) {
-  Value *GEPVal = Builder.CreateInBoundsGEP(Ptr, IdxList, Name);
+  llvm::Type *PtrTy = Ptr->getType();
+  Value *GEPVal = Builder.CreateInBoundsGEP(
+      PtrTy->getPointerElementType(), Ptr, IdxList, Name);
 
   // If the pointer overflow sanitizer isn't enabled, do nothing.
   if (!SanOpts.has(SanitizerKind::PointerOverflow))
     return GEPVal;
 
-  llvm::Type *PtrTy = Ptr->getType();
-
   // Perform nullptr-and-offset check unless the nullptr is defined.
   bool PerformNullCheck = !NullPointerIsDefined(
       Builder.GetInsertBlock()->getParent(), PtrTy->getPointerAddressSpace());

polly/lib/CodeGen/IslNodeBuilder.cpp

@@ -1146,10 +1146,11 @@ static Value *buildFADOutermostDimensionLoad(Value *GlobalDescriptor,
                                              PollyIRBuilder &Builder,
                                              std::string ArrayName) {
   assert(GlobalDescriptor && "invalid global descriptor given");
+  Type *Ty = GlobalDescriptor->getType()->getPointerElementType();
 
   Value *endIdx[4] = {Builder.getInt64(0), Builder.getInt32(3),
                       Builder.getInt64(0), Builder.getInt32(2)};
-  Value *endPtr = Builder.CreateInBoundsGEP(GlobalDescriptor, endIdx,
+  Value *endPtr = Builder.CreateInBoundsGEP(Ty, GlobalDescriptor, endIdx,
                                             ArrayName + "_end_ptr");
   Type *type = cast<GEPOperator>(endPtr)->getResultElementType();
   assert(isa<IntegerType>(type) && "expected type of end to be integral");
@@ -1158,7 +1159,7 @@ static Value *buildFADOutermostDimensionLoad(Value *GlobalDescriptor,
 
   Value *beginIdx[4] = {Builder.getInt64(0), Builder.getInt32(3),
                         Builder.getInt64(0), Builder.getInt32(1)};
-  Value *beginPtr = Builder.CreateInBoundsGEP(GlobalDescriptor, beginIdx,
+  Value *beginPtr = Builder.CreateInBoundsGEP(Ty, GlobalDescriptor, beginIdx,
                                               ArrayName + "_begin_ptr");
   Value *begin = Builder.CreateLoad(type, beginPtr, ArrayName + "_begin");