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[Bug rtl-optimization/21676] [4.0/4.1/4.2 Regression] Optimizer regression: SciMark sparse matrix benchmark
- From: "gcc at pdoerfler dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 6 Jun 2006 11:22:40 -0000
- Subject: [Bug rtl-optimization/21676] [4.0/4.1/4.2 Regression] Optimizer regression: SciMark sparse matrix benchmark
- References: <bug-21676-10607@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #3 from gcc at pdoerfler dot com 2006-06-06 11:22 -------
I get the following with -O3 -march=pentium4 -fomit-frame-pointer on a pentium4
gentoo machine:
gcc-3.4.6 gcc-4.0.2 gcc-4.1.1
2.69s 4.14s 3.26s
These are all with gentoo's patches.
Also, current mainline is the same as gcc-4.1.1
I can confirm that the difference without -fomit-frame-pointer is much smaller.
In fact, 3.4.6 and 4.1.1 are almost the same without it.
--
gcc at pdoerfler dot com changed:
What |Removed |Added
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21676