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2011-08-09 Revital Eres <revital.eres@linaro.org>
gcc/
Backport from trunk -r176970:
* modulo-sched.c: Change comment.
(reset_sched_times): Fix print message.
(print_partial_schedule): Add print
info.
=== modified file 'gcc/modulo-sched.c'
--- old/gcc/modulo-sched.c 2011-08-03 12:20:38 +0000
+++ new/gcc/modulo-sched.c 2011-08-09 04:31:10 +0000
@@ -84,13 +84,14 @@
II cycles (i.e. use register copies to prevent a def from overwriting
itself before reaching the use).
- SMS works with countable loops whose loop count can be easily
- adjusted. This is because we peel a constant number of iterations
- into a prologue and epilogue for which we want to avoid emitting
- the control part, and a kernel which is to iterate that constant
- number of iterations less than the original loop. So the control
- part should be a set of insns clearly identified and having its
- own iv, not otherwise used in the loop (at-least for now), which
+ SMS works with countable loops (1) whose control part can be easily
+ decoupled from the rest of the loop and (2) whose loop count can
+ be easily adjusted. This is because we peel a constant number of
+ iterations into a prologue and epilogue for which we want to avoid
+ emitting the control part, and a kernel which is to iterate that
+ constant number of iterations less than the original loop. So the
+ control part should be a set of insns clearly identified and having
+ its own iv, not otherwise used in the loop (at-least for now), which
initializes a register before the loop to the number of iterations.
Currently SMS relies on the do-loop pattern to recognize such loops,
where (1) the control part comprises of all insns defining and/or
@@ -636,8 +637,8 @@
/* Print the scheduling times after the rotation. */
fprintf (dump_file, "crr_insn->node=%d (insn id %d), "
"crr_insn->cycle=%d, min_cycle=%d", crr_insn->node->cuid,
- INSN_UID (crr_insn->node->insn), SCHED_TIME (u),
- normalized_time);
+ INSN_UID (crr_insn->node->insn), normalized_time,
+ new_min_cycle);
if (JUMP_P (crr_insn->node->insn))
fprintf (dump_file, " (branch)");
fprintf (dump_file, "\n");
@@ -2782,8 +2783,13 @@
fprintf (dump, "\n[ROW %d ]: ", i);
while (ps_i)
{
- fprintf (dump, "%d, ",
- INSN_UID (ps_i->node->insn));
+ if (JUMP_P (ps_i->node->insn))
+ fprintf (dump, "%d (branch), ",
+ INSN_UID (ps_i->node->insn));
+ else
+ fprintf (dump, "%d, ",
+ INSN_UID (ps_i->node->insn));
+
ps_i = ps_i->next_in_row;
}
}
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