[Bug tree-optimization/61306] [4.10 Regression] wrong code at -Os and above on x86_64-linux-gnu

[thomas.preudhomme at arm dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61306

--- Comment #3 from Thomas Preud'homme <thomas.preudhomme at arm dot com> ---
Indeed. I also noticed that the original bswap code would happily accept signed
ssa value and signed cast which can lead to disaster. I worked out a patch for
this issue that check the sign of the lhs of the bitwise or expression and use
the (unsigned_)?int.I_type_node accordingly but I now get bootstrap failure.
I'll provide a patch asap.