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[Bug tree-optimization/18594] PHI insertion is slow
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 25 Jan 2008 20:48:55 -0000
- Subject: [Bug tree-optimization/18594] PHI insertion is slow
- References: <bug-18594-6528@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #6 from rguenth at gcc dot gnu dot org 2008-01-25 20:48 -------
I need 10000 to produce interesting numbers on the trunk:
integration : 13.01 (13%) usr 0.07 ( 6%) sys 13.14 (13%) wall
22701 kB (13%) ggc
tree CFG cleanup : 3.71 ( 4%) usr 0.00 ( 0%) sys 3.71 ( 4%) wall
312 kB ( 0%) ggc
tree memory partitioning: 14.12 (14%) usr 0.00 ( 0%) sys 14.14 (14%) wall
0 kB ( 0%) ggc
tree operand scan : 59.74 (59%) usr 0.10 ( 9%) sys 60.00 (59%) wall
4716 kB ( 3%) ggc
TOTAL : 101.06 1.14 102.39
170149 kB
but PHI insertion is definitely not a problem:
tree PHI insertion : 0.06 ( 0%) usr 0.00 ( 0%) sys 0.07 ( 0%) wall
3458 kB ( 2%) ggc
with lower values (like 5000) our usual problem maker is:
tree operand scan : 12.01 (55%) usr 0.03 ( 5%) sys 12.12 (54%) wall
2390 kB ( 3%) ggc
TOTAL : 21.77 0.64 22.62
89513 kB
memory usage isn't bad either.
I declare PHI insertion fixed.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18594