[Bug tree-optimization/98909] Failure to optimize odd loop pattern

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98909

Andrew Pinski  changed:

   What|Removed |Added

   Severity|normal  |enhancement

[Bug tree-optimization/98909] Failure to optimize odd loop pattern

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98909

Richard Biener  changed:

   What|Removed |Added

   Last reconfirmed||2021-02-02
 Status|UNCONFIRMED |NEW
 Ever confirmed|0   |1

--- Comment #2 from Richard Biener  ---
Confirmed.  Final value replacement just uses SCEV.

[Bug tree-optimization/98909] Failure to optimize odd loop pattern

[gabravier at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98909

--- Comment #1 from Gabriel Ravier  ---
PS: The same pattern with `unsigned` replacing `int` can be optimized to
`return x & 1;` (done by LLVM, but not by GCC).