[llvm] [StackSafetyAnalysis] Don't call getTruncateOrZeroExtend for pointers of different sizes (PR #79804)

[Pierre van Houtryve via llvm-commits]

================
@@ -273,6 +273,17 @@ ConstantRange StackSafetyLocalAnalysis::offsetFrom(Value *Addr, Value *Base) {
     return UnknownRange;
 
   auto *PtrTy = PointerType::getUnqual(SE.getContext());
----------------
Pierre-vh wrote:

I also found another use of `getUnqual` in this pass that still causes the assert to trip, so indeed seems like we should get rid of those instead. I'll try it

https://github.com/llvm/llvm-project/pull/79804