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[Bug tree-optimization/23835] [4.1 Regression] case where gcc 4.1.0 -O3 compile takes two times longer earlier versions
- From: "jaffe at broad dot mit dot edu" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 28 Sep 2005 09:45:57 -0000
- Subject: [Bug tree-optimization/23835] [4.1 Regression] case where gcc 4.1.0 -O3 compile takes two times longer earlier versions
- References: <20050912163013.23835.jaffe@broad.mit.edu>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From jaffe at broad dot mit dot edu 2005-09-28 09:45 -------
That's an improvement!
Still, here are the stats again, updated for 4.1.0:
Compile time in seconds for test.ii:
-O0 -O1 -O2 -O3
3.4.3 5.659 9.515 13.811 14.779
4.1.0 5.829 16.398 24.618 27.066
% gcc -v
Using built-in specs.
Target: ia64-unknown-linux-gnu
Configured with: ../configure --prefix=/wga1/gcc --enable-checking=release
Thread model: posix
gcc version 4.1.0 20050926 (experimental)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23835