This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug tree-optimization/15678] [3.5 Regression] Compilation time increased by 10-20%
- From: "belyshev at lubercy dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 27 May 2004 18:18:57 -0000
- Subject: [Bug tree-optimization/15678] [3.5 Regression] Compilation time increased by 10-20%
- References: <20040527100445.15678.gertom@inf.u-szeged.hu>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From belyshev at lubercy dot com 2004-05-27 18:18 -------
benchmark:
compiler time (s) mem (MB)
gcc-2.7 3.7 63
gcc-2.7 -O2 5.1 63
gcc-2.95 5.4 80
gcc-2.95 -O2 15.6 81
gcc-3.3.4 14.8 59
gcc-3.3.4 -O2 37.3 60
gcc-3.4.1 16.1 56
gcc-3.4.1 -O2 31.8 76
gcc-3.5.0 19.9 169
gcc-3.5.0 -O2 53.3 200
icc-8 -O0 28.2 41
icc-8 -O2 63.6 41
notes:
* 'time' is 'user' compilation time (not sys or real), avg from 3 runs
* 'mem' is maximum data size
* all compilers invoked with 'f.c -fomit-frame-pointer -S -o /dev/null'
* my machine is x86 1107 MHz CPU with 64/64 KB L1 64 KB L2 and 256 MB of 143
MHz SDRAM
* gcc-2.7 is 2.7.2.3 from debian
* gcc-2.95 is 2.95.4 20030502 (prerelease)
* gcc-3.3.4 is 3.3.4 20040328 (prerelease)
* gcc-3.4.1 is 3.4.1 20040516 (prerelease)
* gcc-3.5.0 is 3.5.0 20040526 (experimental)
* icc-8 is 8.0.055
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15678