[Bug tree-optimization/115344] Missing loop counter reversal

[andi-gcc at firstfloor dot org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115344

--- Comment #5 from Andi Kleen <andi-gcc at firstfloor dot org> ---
Also the other problem is that doloop optimization is only for known bounds,
while generic reversal works for unknown too