[Bug tree-optimization/118456] [15 Regression] wrong code due to ifcombine since r15-6773

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118456

--- Comment #1 from Sam James <sjames at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #0)
> [...]
> is miscompiled at -O2 starting with
> r15-6773-gc96a6c2c264776d8138c6b303d005e74f047cfa0
> r15-6865 doesn't fix that.

off by one, I assume? r15-6866-g52e4ede030979d is one after.