[PATCH] D48599: SCEVExpander::expandAddRecExprLiterally(): check before casting as Instruction

[Evgeny Stupachenko via Phabricator via llvm-commits]

evstupac added inline comments.


================
Comment at: lib/Analysis/ScalarEvolutionExpander.cpp:1172-1175
+      Value *IncomingValue = PN.getIncomingValueForBlock(LatchBlock);
+      if (!isa<Instruction>(IncomingValue))
+        continue;
+      Instruction *TempIncV = cast<Instruction>(IncomingValue);
----------------
It looks very similar to dyn_cast:


```
Instruction *TempIncV =
    dyn_cast<Instruction>(PN.getIncomingValueForBlock(LatchBlock));
if (!TempIncV)
  continue;
```



Repository:
  rL LLVM

https://reviews.llvm.org/D48599