[Bug middle-end/17895] [4.0 Regression] tree CFG cleanup is slow

2004-11-18 Thread pinskia at gcc dot gnu dot org
--- Additional Comments From pinskia at gcc dot gnu dot org 2004-11-18 12:59 --- *** This bug has been marked as a duplicate of 15524 *** -- What|Removed |Added

[Bug middle-end/17895] [4.0 Regression] tree CFG cleanup is slow

2004-10-28 Thread steven at gcc dot gnu dot org
--- Additional Comments From steven at gcc dot gnu dot org 2004-10-28 15:24 --- I am tempted to call this critical. This is *the* major quadratic bottleneck in GCC at the moment, for reasonably normal code. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17895

[Bug middle-end/17895] [4.0 Regression] tree CFG cleanup is slow

2004-10-12 Thread kazu at cs dot umass dot edu
--- Additional Comments From kazu at cs dot umass dot edu 2004-10-13 03:20 --- tree_redirect_edge_and_branch needs O(n) time to redirect an edge of a SWITCH_EXPR in the worst case, where n is the number of case labels in a SWITHC_EXPR. Therefore, redirecting O(n) edges costs O(n^2) in ti