[Bug tree-optimization/15991] New: phi nodes with identical arguments still remain at t50.tailc
kazu at cs dot umass dot edu
gcc-bugzilla@gcc.gnu.org
Mon Jun 14 23:58:00 GMT 2004
# grep "PHI <0B([0-9]*), 0B([0-9]*)>" *.i.t50*
bb-reorder.i.t50.tailc: # best_edge.1682_439 = PHI <0B(64), 0B(85)>;
cfgrtl.i.t50.tailc: # x_36 = PHI <0B(4), 0B(8)>;
expmed.i.t50.tailc: # tem_214 = PHI <0B(84), 0B(85)>;
optabs.i.t50.tailc: # temp_393 = PHI <0B(30), 0B(29)>;
optabs.i.t50.tailc: # temp_106 = PHI <0B(92), 0B(91)>;
recog.i.t50.tailc: # eh_edge_50 = PHI <0B(34), 0B(31)>;
recog.i.t50.tailc: # out_set_5 = PHI <0B(6), 0B(8)>;
tree-ssa-ccp.i.t50.tailc: # uses_4 = PHI <0B(5), 0B(6)>;
tree-ssa-forwprop.i.t50.tailc: # df_786 = PHI <0B(8), 0B(9)>;
I have yet to find a small testcase for the above.
It may be just a matter of running redphi one more time.
--
Summary: phi nodes with identical arguments still remain at
t50.tailc
Product: gcc
Version: 3.5.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: enhancement
Priority: P2
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: kazu at cs dot umass dot edu
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15991
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