Fix "pointer is null" static analyzer warning. NFCI.

Use cast<> instead of dyn_cast<> since the pointer is always dereferenced and cast<> will perform the null assertion for us.

diff --git a/llvm/lib/Target/NVPTX/NVPTXLowerAlloca.cpp b/llvm/lib/Target/NVPTX/NVPTXLowerAlloca.cpp
index 945b728..cf488b0 100644 (file)
--- a/llvm/lib/Target/NVPTX/NVPTXLowerAlloca.cpp
+++ b/llvm/lib/Target/NVPTX/NVPTXLowerAlloca.cpp
@@ -70,8 +70,7 @@ bool NVPTXLowerAlloca::runOnFunction(Function &F) {
     for (auto &I : BB) {
       if (auto allocaInst = dyn_cast<AllocaInst>(&I)) {
         Changed = true;
-        auto PTy = dyn_cast<PointerType>(allocaInst->getType());
-        auto ETy = PTy->getElementType();
+        auto ETy = cast<PointerType>(allocaInst->getType())->getElementType();
         auto LocalAddrTy = PointerType::get(ETy, ADDRESS_SPACE_LOCAL);
         auto NewASCToLocal = new AddrSpaceCastInst(allocaInst, LocalAddrTy, "");
         auto GenericAddrTy = PointerType::get(ETy, ADDRESS_SPACE_GENERIC);