[Bug tree-optimization/100162] missed optimization for dead code elimination at -O3 (vs. -O2)

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100162

Sam James <sjames at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |sjames at gcc dot gnu.org

--- Comment #4 from Sam James <sjames at gcc dot gnu.org> ---
at -O1:
* 10/11 has the call to foo
* 12 optimises it out

at -O2:
* 10/11 optimises it out
* 12/13/14/15 doesn't

which one am I bisecting here?