-/* Initialize for scheduling a group of instructions. */
-
-static void
-m32r_sched_init (stream, verbose, max_ready)
- FILE * stream ATTRIBUTE_UNUSED;
- int verbose ATTRIBUTE_UNUSED;
- int max_ready ATTRIBUTE_UNUSED;
-{
- m32r_sched_odd_word_p = FALSE;
-}
-
-\f
-/* Reorder the schedulers priority list if needed */
-
-static int
-m32r_sched_reorder (stream, verbose, ready, n_readyp, clock)
- FILE * stream;
- int verbose;
- rtx * ready;
- int *n_readyp;
- int clock ATTRIBUTE_UNUSED;
-{
- int n_ready = *n_readyp;
-
- if (TARGET_DEBUG)
- return m32r_issue_rate ();
-
- if (verbose <= 7)
- stream = (FILE *)0;
-
- if (stream)
- fprintf (stream,
- ";;\t\t::: Looking at %d insn(s) on ready list, boundary is %s word\n",
- n_ready,
- (m32r_sched_odd_word_p) ? "odd" : "even");
-
- if (n_ready > 1)
- {
- rtx * long_head = (rtx *) alloca (sizeof (rtx) * n_ready);
- rtx * long_tail = long_head;
- rtx * short_head = (rtx *) alloca (sizeof (rtx) * n_ready);
- rtx * short_tail = short_head;
- rtx * new_head = (rtx *) alloca (sizeof (rtx) * n_ready);
- rtx * new_tail = new_head + (n_ready - 1);
- int i;
-
- /* Loop through the instructions, classifing them as short/long. Try
- to keep 2 short together and/or 1 long. Note, the ready list is
- actually ordered backwards, so keep it in that manner. */
- for (i = n_ready-1; i >= 0; i--)
- {
- rtx insn = ready[i];
-
- if (! m32r_is_insn (insn))
- {
- /* Dump all current short/long insns just in case. */
- while (long_head != long_tail)
- *new_tail-- = *long_head++;
-
- while (short_head != short_tail)
- *new_tail-- = *short_head++;
-
- *new_tail-- = insn;
- if (stream)
- fprintf (stream,
- ";;\t\t::: Skipping non instruction %d\n",
- INSN_UID (insn));
-
- }
-
- else
- {
- if (get_attr_insn_size (insn) != INSN_SIZE_SHORT)
- *long_tail++ = insn;
-
- else
- *short_tail++ = insn;
- }
- }
-
- /* If we are on an odd word, emit a single short instruction if
- we can */
- if (m32r_sched_odd_word_p && short_head != short_tail)
- *new_tail-- = *short_head++;
-
- /* Now dump out all of the long instructions */
- while (long_head != long_tail)
- *new_tail-- = *long_head++;
-
- /* Now dump out all of the short instructions */
- while (short_head != short_tail)
- *new_tail-- = *short_head++;
-
- if (new_tail+1 != new_head)
- abort ();
-
- memcpy (ready, new_head, sizeof (rtx) * n_ready);
- if (stream)
- {
- int i;
- fprintf (stream, ";;\t\t::: New ready list: ");
- for (i = 0; i < n_ready; i++)
- {
- rtx insn = ready[i];
-
- fprintf (stream, " %d", INSN_UID (ready[i]));
-
- if (! m32r_is_insn (insn))
- fputs ("(?)", stream);
-
- else if (get_attr_insn_size (insn) != INSN_SIZE_SHORT)
- fputs ("(l)", stream);
-
- else
- fputs ("(s)", stream);
- }
-
- fprintf (stream, "\n");
- }
- }
- return m32r_issue_rate ();
-}
-
projects / msp430-gcc.git / blobdiff