[Bug tree-optimization/31191] New: [4.3 Regression] 1000% Runtime regression for FreeFEM navier-stokes example

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

The regression was introduced between r120825 (10s runtime) and r120846 (110s
runtime).  The obvious candidate is:

+2007-01-16  Jan Hubicka  <jh@suse.cz>
+
+       * cgraph.h (cgraph_decide_inlining_incrementally): Kill.
+       * tree-pass.h: Reorder to make IPA passes appear toegher.
+       (pass_early_inline, pass_inline_parameters, pass_apply_inline):
Declare.+       * cgraphunit.c (cgraph_finalize_function): Do not compute
inling
+       parameters, do not call early inliner.
+       * ipa-inline.c: Update comments.  Include tree-flow.h
+       (cgraph_decide_inlining): Do not compute inlining parameters.
+       (cgraph_decide_inlining_incrementally): Return TODOs; assume to
+       be called with function context set up.
+       (pass_ipa_inline): Remove unreachable functions before pass.
+       (cgraph_early_inlining): Simplify assuming to be called from the
+       PM as local pass.
+       (pass_early_inline): New pass.
+       (cgraph_gate_ipa_early_inlining): New gate.
+       (pass_ipa_early_inline): Turn into simple wrapper.
+       (compute_inline_parameters): New function.
+       (gate_inline_passes): New gate.
+       (pass_inline_parameters): New pass.
+       (apply_inline): Move here from tree-optimize.c
+       (pass_apply_inline): New pass.
+       * ipa.c (cgraph_remove_unreachable_nodes): Verify cgraph after
+       transforming.
+       * tree-inline.c (optimize_inline_calls): Return TODOs rather than
+       doing them by hand.
+       (tree_function_versioning): Do not allocate dummy struct function.
+       * tree-inline.h (optimize_inline_calls): Update prototype.
+       * tree-optimize.c (execute_fixup_cfg): Export.
+       (pass_fixup_cfg): Remove
+       (tree_rest_of_compilation): Do not apply inlines.
+       * tree-flow.h (execute_fixup_cfg): Declare.
+       * Makefile.in (gt-passes.c): New.
+       * passes.c: Include gt-passes.h
+       (init_optimization_passes): New passes.
+       (nnodes, order): New static vars.
+       (do_per_function_toporder): New function.
+       (execute_one_pass): Dump current pass here.
+       (execute_ipa_pass_list): Don't dump current pass here.


-- 
           Summary: [4.3 Regression] 1000% Runtime regression for FreeFEM
                    navier-stokes example
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rguenth at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31191