[Bug tree-optimization/49140] [4.6 regression] wrong code with -O2 and -O3, not with -O3 -no-inline

[grokbrsm at free dot fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49140

--- Comment #17 from Sébastien 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.