[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 #2 from Jim Wilson <wilson at gcc dot gnu.org> ---
Created attachment 46919
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46919&action=edit
untested fix to copy i2src earlier

works for testcase but otherwise untested