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[Bug target/27827] gcc 4 produces worse x87 code on all platforms than gcc 3
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 25 Jun 2006 20:05:42 -0000
- Subject: [Bug target/27827] gcc 4 produces worse x87 code on all platforms than gcc 3
- References: <bug-27827-12761@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #18 from rguenth at gcc dot gnu dot org 2006-06-25 20:05 -------
Unfortunately we don't have infrastructure for performance regression tests.
Btw. did you check what happens if you do not unroll the innermost loop
manually but let -funroll-loops do it? For me the performance is the same (but
I may have screwed up removing the unrolling).
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27827