Added a fix in lowering OpCopyMemorySized.

Our issues was that we assumed that the src was an i8 type when it could be any float type as well.
Because we know the value is 0 the type does not matter so we can just set it to i8.
Also forcing the dst pointer to be a i8* so llvm.memset has compatible parameters.

This fixes #115

Change-Id: I71966ac54d1b3c706083fc2c4a49c49b97393933

IGC/AdaptorOCL/SPIRV/SPIRVReader.cpp

@@ -2649,11 +2649,16 @@ SPIRVToLLVM::transValueWithoutDecoration(SPIRVValue *BV, Function *F,
         if (Init && Init->getOpCode() == OpConstantNull) {
           SPIRVType *Ty = static_cast<SPIRVConstantNull *>(Init)->getType();
           if (Ty->isTypeArray()) {
-            SPIRVTypeArray *AT = static_cast<SPIRVTypeArray *>(Ty);
-            Type *SrcTy = transType(AT->getArrayElementType());
-            assert(SrcTy->isIntegerTy(8));
-            llvm::Value *Src = ConstantInt::get(SrcTy, 0);
-            CI = Builder.CreateMemSet(Dst, Src, Size, Align, IsVolatile);
+              Type* Int8Ty = Type::getInt8Ty(Dst->getContext());
+              llvm::Value* Src = ConstantInt::get(Int8Ty, 0);
+              llvm::Value* newDst = Dst;
+              if (!Dst->getType()->getPointerElementType()->isIntegerTy(8)) {
+                  Type* Int8PointerTy = Type::getInt8PtrTy(Dst->getContext(),
+                      Dst->getType()->getPointerAddressSpace());
+                  newDst = llvm::BitCastInst::CreatePointerCast(Dst,
+                      Int8PointerTy, "", BB);
+              }
+              CI = Builder.CreateMemSet(newDst, Src, Size, Align, IsVolatile);
           }
         }
       }