Regarding a TODO in InstructionCombining


This is regarding a TODO mentioned in getIdentityValue function in InstructionCombining.cpp file.

//TODO: We can handle other cases e.g. Instruction::And, Instruction::Or etc.

I wanted to know what could be the use cases of implementing these. When I tried implementing these and wrote test cases for the same, the test cases would be optimized in InstructionSimplify before hitting the code in Instruction Combining. Can anyone suggest me where I might be going wrong.



CC David.