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[Bug tree-optimization/58223] [4.8/4.9 Regression] wrong code at -O3 on x86_64-linux-gnu
- From: "glisse at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 23 Aug 2013 07:14:34 +0000
- Subject: [Bug tree-optimization/58223] [4.8/4.9 Regression] wrong code at -O3 on x86_64-linux-gnu
- Auto-submitted: auto-generated
- References: <bug-58223-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58223
Marc Glisse <glisse at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-08-23
Summary|wrong code at -O3 on |[4.8/4.9 Regression] wrong
|x86_64-linux-gnu |code at -O3 on
| |x86_64-linux-gnu
Ever confirmed|0 |1
--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
ldist pass replaces the a[b]=0 statements with a call to memset after the loop,
apparently missing the aliasing with a[0]=1.