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[Bug tree-optimization/49140] [4.6 regression] wrong code with -O2 and -O3, not with -O3 -no-inline
- From: "grokbrsm at free dot fr" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 20 Jul 2011 10:09:57 +0000
- Subject: [Bug tree-optimization/49140] [4.6 regression] wrong code with -O2 and -O3, not with -O3 -no-inline
- Auto-submitted: auto-generated
- References: <bug-49140-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49140
--- Comment #17 from SÃbastien Kunz-Jacques <grokbrsm at free dot fr> 2011-07-20 10:09:54 UTC ---
(In reply to comment #16)
> Confirmed. Works with -O0, fails with -O[12] at least. Still fails on the
> 4.6 branch.
>
> Compiling salsa.cpp with -O1 is enough to trigger the error, compiling
> salsa.cpp with -O0 is enough to mitigate it.
yes, the wrong code is most probably generated in method
Salsa20_Policy::OperateKeystream of salsa.cpp.