- REG_NOTES (p) = gen_rtx_EXPR_LIST (REG_EH_REGION, XEXP (note, 0),
- REG_NOTES (p));
- }
-}
-
-/* If there is a REG_LIBCALL note on OLD_START, move it to NEW_START,
- and link the corresponding REG_RETVAL note to NEW_START. */
-
-static void
-move_libcall_note (rtx old_start, rtx new_start)
-{
- rtx note0, note1, end;
-
- note0 = find_reg_note (old_start, REG_LIBCALL, NULL);
- if (note0 == NULL_RTX)
- return;
-
- remove_note (old_start, note0);
- end = XEXP (note0, 0);
- note1 = find_reg_note (end, REG_RETVAL, NULL);
-
- XEXP (note0, 1) = REG_NOTES (new_start);
- REG_NOTES (new_start) = note0;
- XEXP (note1, 0) = new_start;
-}
-
-/* Remove any REG_RETVAL note, the corresponding REG_LIBCALL note, and
- any markers for a no-conflict block. We have decomposed the
- registers so the non-conflict is now obvious. */
-
-static void
-remove_retval_note (rtx insn1)
-{
- rtx note0, insn0, note1, insn;
-
- note1 = find_reg_note (insn1, REG_RETVAL, NULL);
- if (note1 == NULL_RTX)
- return;
-
- insn0 = XEXP (note1, 0);
- note0 = find_reg_note (insn0, REG_LIBCALL, NULL);
-
- remove_note (insn0, note0);
- remove_note (insn1, note1);
-
- for (insn = insn0; insn != insn1; insn = NEXT_INSN (insn))
- {
- while (1)
- {
- rtx note;
-
- note = find_reg_note (insn, REG_NO_CONFLICT, NULL);
- if (note == NULL_RTX)
- break;
- remove_note (insn, note);
- }