{
rtx end_label;
rtx start_label;
+ rtx new_start_label;
rtx count_reg;
/* If the count register has not been allocated to RC, say if
/* Extract the start label from the jump pattern (rptb_end). */
start_label = XEXP (XEXP (SET_SRC (XVECEXP (PATTERN (insn), 0, 0)), 1), 0);
- /* We'll have to update the basic blocks. */
end_label = gen_label_rtx ();
+ LABEL_NUSES (end_label)++;
emit_label_after (end_label, insn);
+ new_start_label = gen_label_rtx ();
+ LABEL_NUSES (new_start_label)++;
+
for (; insn; insn = PREV_INSN (insn))
- if (insn == start_label)
- break;
+ {
+ if (insn == start_label)
+ break;
+ if (GET_CODE (insn) == JUMP_INSN &&
+ JUMP_LABEL (insn) == start_label)
+ redirect_jump (insn, new_start_label, 0);
+ }
if (! insn)
fatal_insn ("c4x_rptb_insert: Cannot find start label", start_label);
- /* We'll have to update the basic blocks. */
+ emit_label_after (new_start_label, insn);
+
if (TARGET_RPTS && c4x_rptb_rpts_p (PREV_INSN (insn), 0))
- emit_insn_before (gen_rpts_top (start_label, end_label), insn);
+ emit_insn_after (gen_rpts_top (new_start_label, end_label), insn);
else
- emit_insn_before (gen_rptb_top (start_label, end_label), insn);
+ emit_insn_after (gen_rptb_top (new_start_label, end_label), insn);
+ if (LABEL_NUSES (start_label) == 0)
+ delete_insn (start_label);
}