https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78633
--- Comment #14 from Kazumoto Kojima <kkojima at gcc dot gnu.org> --- No problem. I can continue nightly build&test with a minimal change diff --git a/gcc/config/sh/sh.md b/gcc/config/sh/sh.md index c6956a0..edadba7 100644 --- a/gcc/config/sh/sh.md +++ b/gcc/config/sh/sh.md @@ -858,7 +858,8 @@ operands of the tstsi_t insn, which is generally the case. */ if (dump_file) fprintf (dump_file, "cmpeqsi_t: replacing with tstsi_t\n"); - emit_insn (gen_tstsi_t (XEXP (op.set_src, 0), XEXP (op.set_src, 1))); + emit_insn (gen_tstsi_t (copy_rtx (XEXP (op.set_src, 0)), + copy_rtx (XEXP (op.set_src, 1)))); DONE; } added to my local git tree so as not to miss other breakages on trunk.