[llvm] 41c22ac - [NFC][SCEV] Assert that we don't try to create SCEVPtrToIntExpr of a non-integral pointer

[Roman Lebedev via llvm-commits]

Author: Roman Lebedev
Date: 2021-04-19T18:38:38+03:00
New Revision: 41c22acc22a54ceb78dc863470b8819052d31d77

URL: https://github.com/llvm/llvm-project/commit/41c22acc22a54ceb78dc863470b8819052d31d77
DIFF: https://github.com/llvm/llvm-project/commit/41c22acc22a54ceb78dc863470b8819052d31d77.diff

LOG: [NFC][SCEV] Assert that we don't try to create SCEVPtrToIntExpr of a non-integral pointer

ptr<->int casts are only valid for integral pointes,
defensively assert that we don't try to break that here.

Added: 
    

Modified: 
    llvm/lib/Analysis/ScalarEvolution.cpp

Removed: 
    


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diff  --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp
index f92cccd44816..cb820dfde632 100644
--- a/llvm/lib/Analysis/ScalarEvolution.cpp
+++ b/llvm/lib/Analysis/ScalarEvolution.cpp
@@ -1053,6 +1053,9 @@ const SCEV *ScalarEvolution::getPtrToIntExpr(const SCEV *Op, Type *Ty,
   if (!Op->getType()->isPointerTy())
     return getTruncateOrZeroExtend(Op, Ty);
 
+  assert(!getDataLayout().isNonIntegralPointerType(Op->getType()) &&
+         "Source pointer type must be integral for ptrtoint!");
+
   // What would be an ID for such a SCEV cast expression?
   FoldingSetNodeID ID;
   ID.AddInteger(scPtrToInt);