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IndVarSimplify - silence static analyzer dyn_cast<> null dereference warning. NFCI. 

The static analyzer is warning about a potential null dereference, but we should be able to use cast<> directly and if not assert will fire for us.

llvm-svn: 375426
This commit is contained in:
Simon Pilgrim 2019-10-21 17:15:05 +00:00
parent 814548ec8e
commit 0c5df8dbe5
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/Transforms/Scalar/IndVarSimplify.cpp
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@ -2268,8 +2268,8 @@ static PHINode *FindLoopCounter(Loop *L, BasicBlock *ExitingBB,
if (BECount->getType()->isPointerTy() && !Phi->getType()->isPointerTy())
continue;
const auto *AR = dyn_cast<SCEVAddRecExpr>(SE->getSCEV(Phi));
const auto *AR = cast<SCEVAddRecExpr>(SE->getSCEV(Phi));
// AR may be a pointer type, while BECount is an integer type.
// AR may be wider than BECount. With eq/ne tests overflow is immaterial.
// AR may not be a narrower type, or we may never exit.