Revert 156658.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156662 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp
index cb8ee27..0c1ac69 100644
--- a/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -570,10 +570,9 @@
   // Handle selected intrinsic function calls.
   switch (F->getIntrinsicID()) {
   default: break;
-    // At -O0 we don't care about the lifetime or expect intrinsics.
+    // At -O0 we don't care about the lifetime intrinsics.
   case Intrinsic::lifetime_start:
   case Intrinsic::lifetime_end:
-  case Intrinsic::expect:
     return true;
   case Intrinsic::dbg_declare: {
     const DbgDeclareInst *DI = cast<DbgDeclareInst>(Call);