[Bug tree-optimization/34683] [4.3 Regression] Fortran FE generated IL pessimizes middle-end IL and analysis

["rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #26 from rguenth at gcc dot gnu dot org  2008-01-08 11:06 -------
We do a _lot_ of calls to var_ann during the compilation:

Each sample counts as 0.01 seconds.
  %   cumulative   self              self     total           
 time   seconds   seconds    calls   s/call   s/call  name    
 39.79     30.12    30.12  1311048     0.00     0.00  ggc_alloc_stat
 12.62     39.67     9.55 34186814     0.00     0.00  add_vars_for_offset
  5.77     44.04     4.37 331206978     0.00     0.00  var_ann

so var_ann is not inlined despite of it being declared as such.

                0.00    0.00   35522/331206978     add_to_addressable_set [318]
                1.58    0.00 119702754/331206978     add_virtual_operand [12]
                2.79    0.00 211468702/331206978     add_vars_for_offset [17]
[39]     5.8    4.37    0.00 331206978         var_ann [39]
                0.00    0.00  119615/96446282     htab_find_with_hash <cycle
34> [46]

So, the add_vars_for_offset loop is resposible for most of the calls
(unsurprisingly), and most of the calls are not for global vars.

Making sure this call gets inlined brings another 5s of compile-time.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34683