[Bug tree-optimization/77479] [7 Regression] Compile time hog w/ -O2 (-Os)

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77479

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |memory-hog
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-09-05
                 CC|                            |trippels at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
-   92.17%     0.58%  cc1  cc1  [.] ssa_propagate
   - 91.58% ssa_propagate
      - 90.80% simulate_stmt
         - 44.20% vrp_visit_phi_node
            + 15.77% update_value_range
            + 11.13% vrp_meet
            + 5.42% instantiate_scev
            + 2.92% compare_values
            + 1.63% set_value_range
            + 1.56% analyze_scalar_evolution
            + 0.72% vrp_val_is_min
         - 43.74% vrp_visit_stmt
            + 28.91% extract_range_from_assignment
            + 8.18% update_value_range
            + 4.31% gimple_fold_stmt_to_constant_1