[LLVMdev] What is getTombstoneKey? (original) (raw)
Lawrence lawrence at codeaurora.org
Wed Jul 29 10:51:51 PDT 2015
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Hi, All:
I am trying to extend EarlyCSE.cpp to do more commoning of GEP instruction, it requires a hashtable with two keys, I defined
typedef ScopedHashTable<DoubleKey, std::pair<Value *, unsigned>,
DenseMapInfo<Value *>, LoadMapAllocator>LoadHTType;
I declared a DoubleKey struct similar to CallValue but with two Value * member, However I have problem to implement getTombstoneKey() because I don't know what it is, could anyone tell me what it is about?
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