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[Bug fortran/20923] Compile time is high for the following code
- From: "tobi at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 19 May 2005 22:09:36 -0000
- Subject: [Bug fortran/20923] Compile time is high for the following code
- References: <20050409221505.20923.pinskia@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From tobi at gcc dot gnu dot org 2005-05-19 22:09 -------
The time behavior is strictly linear BTW:
n = 100:
real 0m0.604s
user 0m0.485s
sys 0m0.021s
n = 1000:
real 1m0.860s
user 0m49.055s
sys 0m0.078s
(the array grows quadratically with n)
One thing that's interesting is that in the -fdump-parse-tree output the array
constructor is only expanded in the first case but not in the second, so it
looks like in the latter case we explicitly calculate the array and then throw
it away.
--
What |Removed |Added
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CC| |tobi at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20923