[Bug tree-optimization/118805] [15 Regression] wrong code at -O1 with "-fno-tree-ccp -fno-tree-copy-prop -fno-tree-forwprop -fno-tree-fre" on x86_64-linux-gnu

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118805

--- Comment #1 from Sam James <sjames at gcc dot gnu.org> ---
-fdisable-tree-ifcombine works, but I haven't checked if it's doing something
wrong (given we're disabling a bunch of other passes, it might not be to blame;
possible it unlocks something later that the others would have).