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[Bug target/50164] [IRA, 4.7 Regression] Performance degradation due to increased memory instructions count
- From: "hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 26 Aug 2011 21:10:07 +0000
- Subject: [Bug target/50164] [IRA, 4.7 Regression] Performance degradation due to increased memory instructions count
- Auto-submitted: auto-generated
- References: <bug-50164-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50164
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2011-08-26
Ever Confirmed|0 |1
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> 2011-08-26 21:10:07 UTC ---
On Atom with -m32 -O2 -march=atom,
1. GCC 4.6.1:
./4.6 64.16s user 0.01s system 99% cpu 1:04.18 total
2. GCC 4.7.0 20110819:
./0819 69.73s user 0.01s system 99% cpu 1:09.76 total
3. GCC 4.7.0 20110826:
./0826 64.30s user 0.02s system 99% cpu 1:04.33 total
Has this problem been fixed?