[Bug target/115631] [15 Regression] GCN: [-PASS:-]{+FAIL:+} c-c++-common/torture/builtin-arith-overflow-6.c -O2 execution test

[rsandifo at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115631

--- Comment #4 from Richard Sandiford <rsandifo at gcc dot gnu.org> ---
Created attachment 58513
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58513&action=edit
A patch for a bug seen on arm*-*-*

Also, could you check whether the attached patch makes any difference?  It
fixes a problem seen on arm*-*-*, and I notice GCN also defines
cannot_copy_insn_p.