Revert r93504 because older uses of llvm.dbg.declare intrinsics need to be auto-upgraded

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93515 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp
index 09fd657..8bc95d3 100644
--- a/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -332,6 +332,8 @@
       return true;
 
     Value *Address = DI->getAddress();
+    if (BitCastInst *BCI = dyn_cast<BitCastInst>(Address))
+      Address = BCI->getOperand(0);
     AllocaInst *AI = dyn_cast<AllocaInst>(Address);
     // Don't handle byval struct arguments or VLAs, for example.
     if (!AI) break;