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[Bug tree-optimization/35639] [4.3/4.4 Regression] -fprofile-generate = huge SCCs for PRE
- From: "bonzini at gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 5 Feb 2009 09:01:44 -0000
- Subject: [Bug tree-optimization/35639] [4.3/4.4 Regression] -fprofile-generate = huge SCCs for PRE
- References: <bug-35639-7849@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #10 from bonzini at gnu dot org 2009-02-05 09:01 -------
I get some SCCs that have 1500+ values in them. That is quite expensive to
maintain.
345,334,000 iterative_hash_hashval_t
199,259,509 ???:???
151,133,289 iterative_hash_expr
111,911,577 bitmap_bit_p
96,901,657 htab_find_slot_with_hash
93,662,766 get_expr_value_id
64,328,952 bitmap_set_bit
--
bonzini at gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.3/4.4 Regression] - |[4.3/4.4 Regression] -
|fprofile-generate + PRE = |fprofile-generate = huge
|big compile-time |SCCs for PRE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35639