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[Bug tree-optimization/56488] [4.7 Regression] wrong code for loop at -O3
- 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, 01 Mar 2013 09:53:20 +0000
- Subject: [Bug tree-optimization/56488] [4.7 Regression] wrong code for loop at -O3
- Auto-submitted: auto-generated
- References: <bug-56488-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56488
--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> 2013-03-01 09:53:20 UTC ---
Seems to me that 'e' is signed and the testcase relies on wrapping overflow
(-fwrapv helps).