[PATCH] D106289: [InstCombine] Fold phi ( inttoptr/ptrtoint x ) to phi (x)

[Juneyoung Lee via Phabricator via llvm-commits]

aqjune added inline comments.


================
Comment at: llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp:324
+    }
+  }
+  if (!OperandWithRoundTripCast)
----------------
aqjune wrote:
> Should we exclude cases where input pointers have different types?
> After opaque pointers are introduced everything will be fine - it is a safeguard that will work until then.
For example:
```
p = phi i64 [ ptrtoint i8* %a, BB1 ], [ ptrtoint float* %b, BB2 ]
i = inttoptr p
```


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D106289/new/

https://reviews.llvm.org/D106289