[CodeGen] Disable default copy assignment operator for struct VectorInfo

struct VectorInfo manages resources such as dynamically allocated memory, it's generally a good practice to either implement a custom copy constructor or disable the default one

Reviewed By: kazu

Differential Revision: https://reviews.llvm.org/D152230

diff --git a/llvm/lib/CodeGen/InterleavedLoadCombinePass.cpp b/llvm/lib/CodeGen/InterleavedLoadCombinePass.cpp
index 4154cd8..d0ad6e4 100644 (file)
--- a/llvm/lib/CodeGen/InterleavedLoadCombinePass.cpp
+++ b/llvm/lib/CodeGen/InterleavedLoadCombinePass.cpp
@@ -678,6 +678,8 @@ public:
     EI = new ElementInfo[VTy->getNumElements()];
   }
 
+  VectorInfo &operator=(const VectorInfo &other) = delete;
+
   virtual ~VectorInfo() { delete[] EI; }
 
   unsigned getDimension() const { return VTy->getNumElements(); }