diff --git a/gcc/builtin-attrs.def b/gcc/builtin-attrs.def
index 545b6fd..d149e26 100644
--- a/gcc/builtin-attrs.def
+++ b/gcc/builtin-attrs.def
@@ -107,7 +107,6 @@ DEF_ATTR_IDENT (ATTR_STRFTIME, "strftime")
 DEF_ATTR_IDENT (ATTR_TYPEGENERIC, "type generic")
 DEF_ATTR_IDENT (ATTR_TM_REGPARM, "*tm regparm")
 DEF_ATTR_IDENT (ATTR_TM_TMPURE, "transaction_pure")
-DEF_ATTR_IDENT (ATTR_RETURNS_TWICE, "returns_twice")
 
 DEF_ATTR_TREE_LIST (ATTR_NOVOPS_LIST, ATTR_NOVOPS, ATTR_NULL, ATTR_NULL)
 
@@ -253,8 +252,6 @@ DEF_ATTR_TREE_LIST (ATTR_TM_NORETURN_NOTHROW_LIST,
 		    ATTR_TM_REGPARM, ATTR_NULL, ATTR_NORETURN_NOTHROW_LIST)
 DEF_ATTR_TREE_LIST (ATTR_TM_CONST_NOTHROW_LIST,
 		    ATTR_TM_REGPARM, ATTR_NULL, ATTR_CONST_NOTHROW_LIST)
-DEF_ATTR_TREE_LIST (ATTR_TM_NOTHROW_RT_LIST,
-		    ATTR_RETURNS_TWICE, ATTR_NULL, ATTR_TM_NOTHROW_LIST)
 
 /* Same attributes used for BUILT_IN_MALLOC except with TM_PURE thrown in.  */
 DEF_ATTR_TREE_LIST (ATTR_TMPURE_MALLOC_NOTHROW_LIST,
diff --git a/gcc/gtm-builtins.def b/gcc/gtm-builtins.def
index 171019e..7dcad03 100644
--- a/gcc/gtm-builtins.def
+++ b/gcc/gtm-builtins.def
@@ -1,5 +1,5 @@
 DEF_TM_BUILTIN (BUILT_IN_TM_START, "_ITM_beginTransaction",
-		BT_FN_UINT32_UINT32_VAR, ATTR_TM_NOTHROW_RT_LIST)
+		BT_FN_UINT32_UINT32_VAR, ATTR_TM_NOTHROW_LIST)
 
 DEF_TM_BUILTIN (BUILT_IN_TM_COMMIT, "_ITM_commitTransaction",
 		BT_FN_VOID, ATTR_TM_NOTHROW_LIST)