[ubsan] Add flag to enable recovery from checks when possible.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169114 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp
index e8c05d3..6067408 100644
--- a/lib/CodeGen/CGBuiltin.cpp
+++ b/lib/CodeGen/CGBuiltin.cpp
@@ -409,7 +409,7 @@
     if (getLangOpts().SanitizeUnreachable)
       EmitCheck(Builder.getFalse(), "builtin_unreachable",
                 EmitCheckSourceLocation(E->getExprLoc()),
-                llvm::ArrayRef<llvm::Value *>());
+                llvm::ArrayRef<llvm::Value *>(), CRK_Unrecoverable);
     else
       Builder.CreateUnreachable();