| Issue |
90487
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| Summary |
Why does stripPointerCasts on CallBase do getReturnedArgOperand
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| Labels |
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| Assignees |
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| Reporter |
fkil
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I've been tracking down a bug in my `opt` pass and was able to track it down to a weird behavior in LLVM that I'm not sure is a bug or intended. Specifically, when `stripPointerCasts` is called on a `CallBase` the result of `getReturnedArgOperand` is returned (if the return value would not be NULL).
After inspecting the source code of `llvm/lib/IR/Value.cpp`, the cause for it is in `stripPointerCastAndOffsets` and was initially introduced in the following commit: https://github.com/llvm/llvm-project/commit/5c12d8fe8f7ac9a3ec13ddad1561d63477e014f6
It seems to happen for every such CallBase.
While I can understand the usefulness for Alias Analysis, the behavior in general confuses me and is not documented. Is this behavior intended?
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