[Bug tree-optimization/57719] [4.8/4.9 Regression] wrong code at -O3 on x86_64-linux-gnu

[mikpelinux at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57719

--- Comment #7 from Mikael Pettersson <mikpelinux at gmail dot com> ---
The wrong-code for tests #1 and #2 (both 4.8/4.9 regressions) was also fixed
for 4.9 by Richard's PR58223 patch in r202096.  That patch has been backported
to 4.8 branch, and the tests do work with current 4.8.