[Bug rtl-optimization/91860] [10 Regression] ICE: in decompose, at rtl.h:2279 with -Og -fipa-cp -g --param=max-combine-insns=3

[wilson at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91860

--- Comment #5 from Jim Wilson <wilson at gcc dot gnu.org> ---
The new testcase is essentially the same problem, but it is i1src this time not
i2src, so just copying i2src earlier doesn't solve the problem, we also need a
fix for i1src, or a fix elsewhere.