[llvm-dev] Regarding a TODO in InstructionCombining

Mayur P via llvm-dev llvm-dev at lists.llvm.org
Thu Jun 23 21:07:31 PDT 2016


On Sun, Jun 12, 2016 at 9:39 PM, Mayur P <mayur170988 at gmail.com> wrote:

> Hi,
> 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.
> Thanks,
> Mayur
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