Avoid crashing if instruction is not part of a loop.
If it is not part of a loop it is obviously invariant wrt to all loops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58240 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/LoopVR.cpp b/lib/Analysis/LoopVR.cpp
index 7f5de25..d0b77b89 100644
--- a/lib/Analysis/LoopVR.cpp
+++ b/lib/Analysis/LoopVR.cpp
@@ -247,12 +247,13 @@
return ConstantRange(cast<IntegerType>(V->getType())->getBitWidth(), false);
LoopInfo &LI = getAnalysis<LoopInfo>();
- ScalarEvolution &SE = getAnalysis<ScalarEvolution>();
Loop *L = LI.getLoopFor(I->getParent());
- if (L->isLoopInvariant(I))
+ if (!L || L->isLoopInvariant(I))
return ConstantRange(cast<IntegerType>(V->getType())->getBitWidth(), false);
+ ScalarEvolution &SE = getAnalysis<ScalarEvolution>();
+
SCEVHandle S = SE.getSCEV(I);
if (isa<SCEVUnknown>(S) || isa<SCEVCouldNotCompute>(S))
return ConstantRange(cast<IntegerType>(V->getType())->getBitWidth(), false);