VN now inserts all sorts of calls into the references hashtable,
not only those which produce a value. This results in missing
initializations of ->value_id which eventually PRE ends up
accessing.
The following fixes that.
Bootstrap and regtest pending on x86_64-unknown-linux-gnu.
Richard.
2013-03-05 Richard Biener <rguent...@suse.de>
* tree-ssa-sccvn.c (set_value_id_for_result): For a NULL
result set a new value-id.
Index: gcc/tree-ssa-sccvn.c
===================================================================
--- gcc/tree-ssa-sccvn.c (revision 196451)
+++ gcc/tree-ssa-sccvn.c (working copy)
@@ -3954,7 +3962,7 @@ free_scc_vn (void)
XDELETE (optimistic_info);
}
-/* Set *ID if we computed something useful in RESULT. */
+/* Set *ID according to RESULT. */
static void
set_value_id_for_result (tree result, unsigned int *id)
@@ -3966,6 +3974,8 @@ set_value_id_for_result (tree result, un
else if (is_gimple_min_invariant (result))
*id = get_or_alloc_constant_value_id (result);
}
+ else
+ *id = get_next_value_id ();
}
/* Set the value ids in the valid hash tables. */
