gcc/gcc/simplify-rtx.c

2198 		&& GET_MODE_CLASS (GET_MODE (xop00)) == MODE_CC
2199 		&& GET_MODE_CLASS (GET_MODE (xop10)) == MODE_CC)
2656 	  && GET_MODE_CLASS (mode) != MODE_CC)
2874 	  && GET_MODE_CLASS (mode) != MODE_CC)
2880 	  && GET_MODE_CLASS (mode) != MODE_CC)
4479   if (GET_MODE_CLASS (cmp_mode) == MODE_CC
4490    is not in class MODE_CC (i.e. it is a real comparison).
4825   /* We can't simplify MODE_CC values since we don't know what the
4827   if (GET_MODE_CLASS (GET_MODE (op0)) == MODE_CC || CC0_P (op0))
5439   if (GET_MODE_CLASS (outermode) == MODE_CC && CONST_INT_P (op))