[Bug target/86771] [9 Regression] gfortran.dg/actual_array_constructor_1.f90 fails on arm after combine 2 insns to 2 insns patch

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86771

--- Comment #15 from Segher Boessenkool <segher at gcc dot gnu.org> ---
(In reply to Wilco from comment #13)
> It seems the safest way
> to split an instruction is to place the new instructions next to each other.

combine can only place new insns at i2 and i3, in either order.  There is
code to figure out which way (if any) works; apparently it doesn't work here.