Add the returns_twice attribute to LLVM.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141001 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp
index 4d233ca..cafaab0 100644
--- a/lib/AsmParser/LLParser.cpp
+++ b/lib/AsmParser/LLParser.cpp
@@ -911,6 +911,7 @@
     case lltok::kw_noreturn:        Attrs |= Attribute::NoReturn; break;
     case lltok::kw_nounwind:        Attrs |= Attribute::NoUnwind; break;
     case lltok::kw_uwtable:         Attrs |= Attribute::UWTable; break;
+    case lltok::kw_returns_twice:   Attrs |= Attribute::ReturnsTwice; break;
     case lltok::kw_noinline:        Attrs |= Attribute::NoInline; break;
     case lltok::kw_readnone:        Attrs |= Attribute::ReadNone; break;
     case lltok::kw_readonly:        Attrs |= Attribute::ReadOnly; break;
@@ -922,7 +923,6 @@
     case lltok::kw_noredzone:       Attrs |= Attribute::NoRedZone; break;
     case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
     case lltok::kw_naked:           Attrs |= Attribute::Naked; break;
-    case lltok::kw_hotpatch:        Attrs |= Attribute::Hotpatch; break;
     case lltok::kw_nonlazybind:     Attrs |= Attribute::NonLazyBind; break;
 
     case lltok::kw_alignstack: {