[PATCH] D48676: [Local] replaceAllDbgUsesWith: Update debug values before RAUW
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Wed Jul 4 05:55:36 PDT 2018
gramanas added inline comments.
================
Comment at: lib/Transforms/Utils/Local.cpp:1844
+ // access the low `FromBits` bits when inspecting the source variable.
+ if (FromBits < ToBits)
+ return rewriteDebugUsers(From, To, DomPoint, DT, Identity);
----------------
Could FromBits be equal to ToBits? In that case neither zext nor sext is needed. Could this be `if (FromBits <= ToBits)`?
https://reviews.llvm.org/D48676
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