1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/tree.h b/gcc/tree.h
index 41f75d8..a369827 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -304,6 +304,9 @@ struct tree_common GTY(())
        TYPE_ALIGN_OK in
 	   ..._TYPE
 
+       TREE_THIS_NOTRAP in
+          INDIRECT_REF
+
    deprecated_flag:
 
 	TREE_DEPRECATED in
@@ -760,6 +763,12 @@ extern void tree_operand_check_failed (int, enum tree_code,
    If this bit is set in an expression, so is TREE_SIDE_EFFECTS.  */
 #define TREE_THIS_VOLATILE(NODE) ((NODE)->common.volatile_flag)
 
+/* Nonzero means this node will not trap.  In an INDIRECT_REF, means
+   accessing the memory pointed to won't generate a trap.  However,
+   this only applies to an object when used appropriately: it doesn't
+   mean that writing a READONLY mem won't trap.  */
+#define TREE_THIS_NOTRAP(NODE) ((NODE)->common.nothrow_flag)
+
 /* In a VAR_DECL, PARM_DECL or FIELD_DECL, or any kind of ..._REF node,
    nonzero means it may not be the lhs of an assignment.  */
 #define TREE_READONLY(NODE) (NON_TYPE_CHECK (NODE)->common.readonly_flag)