[PATCH] D110461: Add salvageDebugInfo support for ptrtoint / inttoptr with trunc/ext behavior

[Adrian Prantl via Phabricator via llvm-commits]

aprantl added inline comments.


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Comment at: llvm/lib/Transforms/Utils/Local.cpp:1924
+    unsigned FromTypeBitSize = FromType->getScalarSizeInBits();
     unsigned ToTypeBitSize = Type->getScalarSizeInBits();
 
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myhsu wrote:
> (nit) Should we bail out if FromTypeBitSize and ToTypeBitSize are the same? Usually these two values are different for sext/zext/trunc but for inttoptr/ptrtoint it's pretty common that they have the same value.
Interestingly, no! If the size is the same `CI->isNoopCast(DL)` will return true, even for ptrtoint/inttoptr.


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  https://reviews.llvm.org/D110461/new/

https://reviews.llvm.org/D110461