constify the Function parameter to the TTI creation callback and

[oota-llvm.git] / lib / Analysis / PHITransAddr.cpp

diff --git a/lib/Analysis/PHITransAddr.cpp b/lib/Analysis/PHITransAddr.cpp
index 8d80c6028ba3d93f6365a41118189aac30e551f5..f7545ea05a39ce5eb528e946cc119f3b4208b088 100644 (file)
--- a/lib/Analysis/PHITransAddr.cpp
+++ b/lib/Analysis/PHITransAddr.cpp
@@ -374,9 +374,10 @@ InsertPHITranslatedSubExpr(Value *InVal, BasicBlock *CurBB,
   if (!Tmp.PHITranslateValue(CurBB, PredBB, &DT, /*MustDominate=*/true))
     return Tmp.getAddr();
 
-  // If we don't have an available version of this value, it must be an
-  // instruction.
-  Instruction *Inst = cast<Instruction>(InVal);
+  // We don't need to PHI translate values which aren't instructions.
+  auto *Inst = dyn_cast<Instruction>(InVal);
+  if (!Inst)
+    return nullptr;
 
   // Handle cast of PHI translatable value.
   if (CastInst *Cast = dyn_cast<CastInst>(Inst)) {