[Bug tree-optimization/32575] [4.2/4.3 regression] With -ftree-vrp miscompiles a single line of code in SQLite

[rguenth at gcc dot gnu dot org]

------- Comment #15 from rguenth at gcc dot gnu dot org  2007-11-01 15:05 
-------
Indeed it does.  But while this is a workaround that works, the problem is in
excessive phi translation which we could stop here (untested! just a wild
guess!):

static bool
compute_partial_antic_aux (basic_block block,
                           bool block_has_abnormal_pred_edge)
{
...
              if (phi_nodes (bprime))
                {

and limit the # of PHI args seen here instead?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32575