------- Comment #13 from ebotcazou at gcc dot gnu dot org 2007-07-13 19:09
-------
> What about doing the same for them?
That doesn't work as easily as I expected. :-)
Now I get the same assertion failure for non-degenerate PHI nodes whose result
is not SSA_NAME_OCCURS_IN_ABNORMAL_PHI but whose operands are, so something
like
--- tree-ssa-sccvn.c (revision 126547)
+++ tree-ssa-sccvn.c (working copy)
@@ -1502,7 +1502,11 @@ visit_use (tree use)
{
if (TREE_CODE (stmt) == PHI_NODE)
{
- changed = visit_phi (stmt);
+ tree result = PHI_RESULT (stmt);
+ if (SSA_NAME_OCCURS_IN_ABNORMAL_PHI (result))
+ changed = set_ssa_val_to (result, result);
+ else
+ changed = visit_phi (stmt);
}
else if (TREE_CODE (stmt) != GIMPLE_MODIFY_STMT
|| (ann && ann->has_volatile_ops))
is not sufficient. So I'm going to test your solution.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32705
