/* Perform instruction reorganizations for delay slot filling.
- Copyright (C) 1992-2015 Free Software Foundation, Inc.
+ Copyright (C) 1992-2017 Free Software Foundation, Inc.
Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu).
Hacked by Michael Tiemann (tiemann@cygnus.com).
#include "system.h"
#include "coretypes.h"
#include "backend.h"
-#include "tree.h"
+#include "target.h"
#include "rtl.h"
-#include "df.h"
-#include "diagnostic-core.h"
+#include "tree.h"
+#include "predict.h"
+#include "memmodel.h"
#include "tm_p.h"
-#include "flags.h"
-#include "alias.h"
-#include "insn-config.h"
#include "expmed.h"
-#include "dojump.h"
-#include "explow.h"
-#include "calls.h"
+#include "insn-config.h"
#include "emit-rtl.h"
-#include "varasm.h"
-#include "stmt.h"
-#include "expr.h"
-#include "conditions.h"
-#include "regs.h"
#include "recog.h"
-#include "obstack.h"
#include "insn-attr.h"
#include "resource.h"
-#include "except.h"
#include "params.h"
-#include "target.h"
#include "tree-pass.h"
-#ifdef DELAY_SLOTS
-
-#ifndef ANNUL_IFTRUE_SLOTS
-#define eligible_for_annul_true(INSN, SLOTS, TRIAL, FLAGS) 0
-#endif
-#ifndef ANNUL_IFFALSE_SLOTS
-#define eligible_for_annul_false(INSN, SLOTS, TRIAL, FLAGS) 0
-#endif
-
\f
/* First, some functions that were used before GCC got a control flow graph.
These functions are now only used here in reorg.c, and have therefore
static int insn_references_resource_p (rtx, struct resources *, bool);
static int insn_sets_resource_p (rtx, struct resources *, bool);
static rtx_code_label *find_end_label (rtx);
-static rtx_insn *emit_delay_sequence (rtx_insn *, rtx_insn_list *, int);
-static rtx_insn_list *add_to_delay_list (rtx_insn *, rtx_insn_list *);
+static rtx_insn *emit_delay_sequence (rtx_insn *, const vec<rtx_insn *> &,
+ int);
+static void add_to_delay_list (rtx_insn *, vec<rtx_insn *> *);
static rtx_insn *delete_from_delay_slot (rtx_insn *);
static void delete_scheduled_jump (rtx_insn *);
static void note_delay_statistics (int, int);
-#if defined(ANNUL_IFFALSE_SLOTS) || defined(ANNUL_IFTRUE_SLOTS)
-static rtx_insn_list *optimize_skip (rtx_jump_insn *);
-#endif
static int get_jump_flags (const rtx_insn *, rtx);
static int mostly_true_jump (rtx);
static rtx get_branch_condition (const rtx_insn *, rtx);
static int condition_dominates_p (rtx, const rtx_insn *);
static int redirect_with_delay_slots_safe_p (rtx_insn *, rtx, rtx);
-static int redirect_with_delay_list_safe_p (rtx_insn *, rtx, rtx_insn_list *);
-static int check_annul_list_true_false (int, rtx);
-static rtx_insn_list *steal_delay_list_from_target (rtx_insn *, rtx,
- rtx_sequence *,
- rtx_insn_list *,
- struct resources *,
- struct resources *,
- struct resources *,
- int, int *, int *,
- rtx *);
-static rtx_insn_list *steal_delay_list_from_fallthrough (rtx_insn *, rtx,
- rtx_sequence *,
- rtx_insn_list *,
- struct resources *,
- struct resources *,
- struct resources *,
- int, int *, int *);
+static int redirect_with_delay_list_safe_p (rtx_insn *, rtx,
+ const vec<rtx_insn *> &);
+static int check_annul_list_true_false (int, const vec<rtx_insn *> &);
+static void steal_delay_list_from_target (rtx_insn *, rtx, rtx_sequence *,
+ vec<rtx_insn *> *,
+ struct resources *,
+ struct resources *,
+ struct resources *,
+ int, int *, int *,
+ rtx *);
+static void steal_delay_list_from_fallthrough (rtx_insn *, rtx, rtx_sequence *,
+ vec<rtx_insn *> *,
+ struct resources *,
+ struct resources *,
+ struct resources *,
+ int, int *, int *);
static void try_merge_delay_insns (rtx_insn *, rtx_insn *);
-static rtx redundant_insn (rtx, rtx_insn *, rtx);
+static rtx_insn *redundant_insn (rtx, rtx_insn *, const vec<rtx_insn *> &);
static int own_thread_p (rtx, rtx, int);
-static void update_block (rtx_insn *, rtx);
+static void update_block (rtx_insn *, rtx_insn *);
static int reorg_redirect_jump (rtx_jump_insn *, rtx);
static void update_reg_dead_notes (rtx_insn *, rtx_insn *);
-static void fix_reg_dead_note (rtx, rtx);
-static void update_reg_unused_notes (rtx, rtx);
+static void fix_reg_dead_note (rtx_insn *, rtx);
+static void update_reg_unused_notes (rtx_insn *, rtx);
static void fill_simple_delay_slots (int);
-static rtx_insn_list *fill_slots_from_thread (rtx_jump_insn *, rtx, rtx, rtx,
- int, int, int, int,
- int *, rtx_insn_list *);
+static void fill_slots_from_thread (rtx_jump_insn *, rtx, rtx, rtx,
+ int, int, int, int,
+ int *, vec<rtx_insn *> *);
static void fill_eager_delay_slots (void);
static void relax_delay_slots (rtx_insn *);
static void make_return_insns (rtx_insn *);
Returns the insn containing the SEQUENCE that replaces INSN. */
static rtx_insn *
-emit_delay_sequence (rtx_insn *insn, rtx_insn_list *list, int length)
+emit_delay_sequence (rtx_insn *insn, const vec<rtx_insn *> &list, int length)
{
/* Allocate the rtvec to hold the insns and the SEQUENCE. */
rtvec seqv = rtvec_alloc (length + 1);
SET_NEXT_INSN (insn) = SET_PREV_INSN (insn) = NULL;
/* Build our SEQUENCE and rebuild the insn chain. */
- int i = 1;
start_sequence ();
XVECEXP (seq, 0, 0) = emit_insn (insn);
- for (rtx_insn_list *li = list; li; li = li->next (), i++)
+
+ unsigned int delay_insns = list.length ();
+ gcc_assert (delay_insns == (unsigned int) length);
+ for (unsigned int i = 0; i < delay_insns; i++)
{
- rtx_insn *tem = li->insn ();
+ rtx_insn *tem = list[i];
rtx note, next;
/* Show that this copy of the insn isn't deleted. */
/* Unlink insn from its original place, and re-emit it into
the sequence. */
SET_NEXT_INSN (tem) = SET_PREV_INSN (tem) = NULL;
- XVECEXP (seq, 0, i) = emit_insn (tem);
+ XVECEXP (seq, 0, i + 1) = emit_insn (tem);
/* SPARC assembler, for instance, emit warning when debug info is output
into the delay slot. */
}
}
end_sequence ();
- gcc_assert (i == length + 1);
/* Splice our SEQUENCE into the insn stream where INSN used to be. */
add_insn_after (seq_insn, after, NULL);
/* Add INSN to DELAY_LIST and return the head of the new list. The list must
be in the order in which the insns are to be executed. */
-static rtx_insn_list *
-add_to_delay_list (rtx_insn *insn, rtx_insn_list *delay_list)
+static void
+add_to_delay_list (rtx_insn *insn, vec<rtx_insn *> *delay_list)
{
- /* If we have an empty list, just make a new list element. If
- INSN has its block number recorded, clear it since we may
+ /* If INSN has its block number recorded, clear it since we may
be moving the insn to a new block. */
-
- if (delay_list == 0)
- {
clear_hashed_info_for_insn (insn);
- return gen_rtx_INSN_LIST (VOIDmode, insn, NULL_RTX);
- }
-
- /* Otherwise this must be an INSN_LIST. Add INSN to the end of the
- list. */
- XEXP (delay_list, 1) = add_to_delay_list (insn, delay_list->next ());
-
- return delay_list;
+ delay_list->safe_push (insn);
}
\f
/* Delete INSN from the delay slot of the insn that it is in, which may
{
rtx_insn *trial, *seq_insn, *prev;
rtx_sequence *seq;
- rtx_insn_list *delay_list = 0;
int i;
int had_barrier = 0;
/* Create a delay list consisting of all the insns other than the one
we are deleting (unless we were the only one). */
+ auto_vec<rtx_insn *, 5> delay_list;
if (seq->len () > 2)
for (i = 1; i < seq->len (); i++)
if (seq->insn (i) != insn)
- delay_list = add_to_delay_list (seq->insn (i), delay_list);
+ add_to_delay_list (seq->insn (i), &delay_list);
/* Delete the old SEQUENCE, re-emit the insn that used to have the delay
list, and rebuild the delay list if non-empty. */
/* If there are any delay insns, remit them. Otherwise clear the
annul flag. */
- if (delay_list)
+ if (!delay_list.is_empty ())
trial = emit_delay_sequence (trial, delay_list, XVECLEN (seq, 0) - 2);
else if (JUMP_P (trial))
INSN_ANNULLED_BRANCH_P (trial) = 0;
num_filled_delays[index][slots_filled][reorg_pass_number]++;
}
\f
-#if defined(ANNUL_IFFALSE_SLOTS) || defined(ANNUL_IFTRUE_SLOTS)
-
/* Optimize the following cases:
1. When a conditional branch skips over only one instruction,
This should be expanded to skip over N insns, where N is the number
of delay slots required. */
-static rtx_insn_list *
-optimize_skip (rtx_jump_insn *insn)
+static void
+optimize_skip (rtx_jump_insn *insn, vec<rtx_insn *> *delay_list)
{
rtx_insn *trial = next_nonnote_insn (insn);
rtx_insn *next_trial = next_active_insn (trial);
- rtx_insn_list *delay_list = 0;
int flags;
flags = get_jump_flags (insn, JUMP_LABEL (insn));
|| recog_memoized (trial) < 0
|| (! eligible_for_annul_false (insn, 0, trial, flags)
&& ! eligible_for_annul_true (insn, 0, trial, flags))
+ || RTX_FRAME_RELATED_P (trial)
|| can_throw_internal (trial))
- return 0;
+ return;
/* There are two cases where we are just executing one insn (we assume
here that a branch requires only one insn; this should be generalized
we have one insn followed by a branch to the same label we branch to.
In both of these cases, inverting the jump and annulling the delay
slot give the same effect in fewer insns. */
- if (next_trial == next_active_insn (JUMP_LABEL (insn))
+ if (next_trial == next_active_insn (JUMP_LABEL_AS_INSN (insn))
|| (next_trial != 0
&& simplejump_or_return_p (next_trial)
&& JUMP_LABEL (insn) == JUMP_LABEL (next_trial)))
if (invert_jump (insn, JUMP_LABEL (insn), 1))
INSN_FROM_TARGET_P (trial) = 1;
else if (! eligible_for_annul_true (insn, 0, trial, flags))
- return 0;
+ return;
}
- delay_list = add_to_delay_list (trial, NULL);
+ add_to_delay_list (trial, delay_list);
next_trial = next_active_insn (trial);
update_block (trial, trial);
delete_related_insns (trial);
INSN_ANNULLED_BRANCH_P (insn) = 1;
}
-
- return delay_list;
}
-#endif
\f
/* Encode and return branch direction and prediction information for
INSN assuming it will jump to LABEL.
rtx note = find_reg_note (jump_insn, REG_BR_PROB, 0);
if (note)
{
- int prob = XINT (note, 0);
+ int prob = profile_probability::from_reg_br_prob_note (XINT (note, 0))
+ .to_reg_br_prob_base ();
if (prob >= REG_BR_PROB_BASE * 9 / 10)
return 2;
return 0;
src = SET_SRC (pat);
- if (GET_CODE (src) == LABEL_REF && LABEL_REF_LABEL (src) == target)
+ if (GET_CODE (src) == LABEL_REF && label_ref_label (src) == target)
return const_true_rtx;
else if (GET_CODE (src) == IF_THEN_ELSE
&& XEXP (src, 2) == pc_rtx
&& ((GET_CODE (XEXP (src, 1)) == LABEL_REF
- && LABEL_REF_LABEL (XEXP (src, 1)) == target)
+ && label_ref_label (XEXP (src, 1)) == target)
|| (ANY_RETURN_P (XEXP (src, 1)) && XEXP (src, 1) == target)))
return XEXP (src, 0);
else if (GET_CODE (src) == IF_THEN_ELSE
&& XEXP (src, 1) == pc_rtx
&& ((GET_CODE (XEXP (src, 2)) == LABEL_REF
- && LABEL_REF_LABEL (XEXP (src, 2)) == target)
+ && label_ref_label (XEXP (src, 2)) == target)
|| (ANY_RETURN_P (XEXP (src, 2)) && XEXP (src, 2) == target)))
{
enum rtx_code rev;
flags = get_jump_flags (jump, newlabel);
for (i = 1; i < pat->len (); i++)
if (! (
-#ifdef ANNUL_IFFALSE_SLOTS
+#if ANNUL_IFFALSE_SLOTS
(INSN_ANNULLED_BRANCH_P (jump)
&& INSN_FROM_TARGET_P (pat->insn (i)))
? eligible_for_annul_false (jump, i - 1, pat->insn (i), flags) :
#endif
-#ifdef ANNUL_IFTRUE_SLOTS
+#if ANNUL_IFTRUE_SLOTS
(INSN_ANNULLED_BRANCH_P (jump)
&& ! INSN_FROM_TARGET_P (XVECEXP (pat, 0, i)))
? eligible_for_annul_true (jump, i - 1, pat->insn (i), flags) :
static int
redirect_with_delay_list_safe_p (rtx_insn *jump, rtx newlabel,
- rtx_insn_list *delay_list)
+ const vec<rtx_insn *> &delay_list)
{
- int flags, i;
- rtx_insn_list *li;
-
/* Make sure all the insns in DELAY_LIST would still be
valid after threading the jump. If they are still
valid, then return nonzero. */
- flags = get_jump_flags (jump, newlabel);
- for (li = delay_list, i = 0; li; li = li->next (), i++)
+ int flags = get_jump_flags (jump, newlabel);
+ unsigned int delay_insns = delay_list.length ();
+ unsigned int i = 0;
+ for (; i < delay_insns; i++)
if (! (
-#ifdef ANNUL_IFFALSE_SLOTS
+#if ANNUL_IFFALSE_SLOTS
(INSN_ANNULLED_BRANCH_P (jump)
- && INSN_FROM_TARGET_P (li->insn ()))
- ? eligible_for_annul_false (jump, i, li->insn (), flags) :
+ && INSN_FROM_TARGET_P (delay_list[i]))
+ ? eligible_for_annul_false (jump, i, delay_list[i], flags) :
#endif
-#ifdef ANNUL_IFTRUE_SLOTS
+#if ANNUL_IFTRUE_SLOTS
(INSN_ANNULLED_BRANCH_P (jump)
- && ! INSN_FROM_TARGET_P (XEXP (li, 0)))
- ? eligible_for_annul_true (jump, i, li->insn (), flags) :
+ && ! INSN_FROM_TARGET_P (delay_list[i]))
+ ? eligible_for_annul_true (jump, i, delay_list[i], flags) :
#endif
- eligible_for_delay (jump, i, li->insn (), flags)))
+ eligible_for_delay (jump, i, delay_list[i], flags)))
break;
- return (li == NULL);
+ return i == delay_insns;
}
/* DELAY_LIST is a list of insns that have already been placed into delay
If not, return 0; otherwise return 1. */
static int
-check_annul_list_true_false (int annul_true_p, rtx delay_list)
+check_annul_list_true_false (int annul_true_p,
+ const vec<rtx_insn *> &delay_list)
{
- rtx temp;
-
- if (delay_list)
- {
- for (temp = delay_list; temp; temp = XEXP (temp, 1))
- {
- rtx trial = XEXP (temp, 0);
-
- if ((annul_true_p && INSN_FROM_TARGET_P (trial))
- || (!annul_true_p && !INSN_FROM_TARGET_P (trial)))
- return 0;
- }
- }
+ rtx_insn *trial;
+ unsigned int i;
+ FOR_EACH_VEC_ELT (delay_list, i, trial)
+ if ((annul_true_p && INSN_FROM_TARGET_P (trial))
+ || (!annul_true_p && !INSN_FROM_TARGET_P (trial)))
+ return 0;
return 1;
}
PNEW_THREAD points to a location that is to receive the place at which
execution should continue. */
-static rtx_insn_list *
+static void
steal_delay_list_from_target (rtx_insn *insn, rtx condition, rtx_sequence *seq,
- rtx_insn_list *delay_list, struct resources *sets,
+ vec<rtx_insn *> *delay_list, resources *sets,
struct resources *needed,
struct resources *other_needed,
int slots_to_fill, int *pslots_filled,
{
int slots_remaining = slots_to_fill - *pslots_filled;
int total_slots_filled = *pslots_filled;
- rtx_insn_list *new_delay_list = 0;
+ auto_vec<rtx_insn *, 5> new_delay_list;
int must_annul = *pannul_p;
int used_annul = 0;
int i;
will effect the direction of the jump in the sequence. */
CLEAR_RESOURCE (&cc_set);
- for (rtx_insn_list *temp = delay_list; temp; temp = temp->next ())
- {
- rtx_insn *trial = temp->insn ();
+ rtx_insn *trial;
+ FOR_EACH_VEC_ELT (*delay_list, i, trial)
+ {
mark_set_resources (trial, &cc_set, 0, MARK_SRC_DEST_CALL);
if (insn_references_resource_p (seq->insn (0), &cc_set, false))
- return delay_list;
+ return;
}
if (XVECLEN (seq, 0) - 1 > slots_remaining
|| ! condition_dominates_p (condition, seq->insn (0))
|| ! single_set (seq->insn (0)))
- return delay_list;
+ return;
/* On some targets, branches with delay slots can have a limited
displacement. Give the back end a chance to tell us we can't do
this. */
if (! targetm.can_follow_jump (insn, seq->insn (0)))
- return delay_list;
+ return;
redundant = XALLOCAVEC (bool, XVECLEN (seq, 0));
for (i = 1; i < seq->len (); i++)
in SEQ, we cannot use it. */
|| (INSN_ANNULLED_BRANCH_P (seq->insn (0))
&& ! INSN_FROM_TARGET_P (trial)))
- return delay_list;
+ return;
/* If this insn was already done (usually in a previous delay slot),
pretend we put it in our delay slot. */
|| (! insn_sets_resource_p (trial, other_needed, false)
&& ! may_trap_or_fault_p (PATTERN (trial)))))
? eligible_for_delay (insn, total_slots_filled, trial, flags)
- : (must_annul || (delay_list == NULL && new_delay_list == NULL))
+ : (must_annul || (delay_list->is_empty () && new_delay_list.is_empty ()))
&& (must_annul = 1,
- check_annul_list_true_false (0, delay_list)
+ check_annul_list_true_false (0, *delay_list)
&& check_annul_list_true_false (0, new_delay_list)
&& eligible_for_annul_false (insn, total_slots_filled,
trial, flags)))
{
if (must_annul)
- used_annul = 1;
+ {
+ /* Frame related instructions cannot go into annulled delay
+ slots, it messes up the dwarf info. */
+ if (RTX_FRAME_RELATED_P (trial))
+ return;
+ used_annul = 1;
+ }
rtx_insn *temp = copy_delay_slot_insn (trial);
INSN_FROM_TARGET_P (temp) = 1;
- new_delay_list = add_to_delay_list (temp, new_delay_list);
+ add_to_delay_list (temp, &new_delay_list);
total_slots_filled++;
if (--slots_remaining == 0)
break;
}
else
- return delay_list;
+ return;
}
/* Record the effect of the instructions that were redundant and which
if (used_annul)
*pannul_p = 1;
- if (delay_list == 0)
- return new_delay_list;
-
- for (rtx_insn_list *temp = new_delay_list; temp; temp = temp->next ())
- delay_list = add_to_delay_list (temp->insn (), delay_list);
-
- return delay_list;
+ rtx_insn *temp;
+ FOR_EACH_VEC_ELT (new_delay_list, i, temp)
+ add_to_delay_list (temp, delay_list);
}
\f
/* Similar to steal_delay_list_from_target except that SEQ is on the
of SEQ is an unconditional branch. In that case we steal its delay slot
for INSN since unconditional branches are much easier to fill. */
-static rtx_insn_list *
+static void
steal_delay_list_from_fallthrough (rtx_insn *insn, rtx condition,
rtx_sequence *seq,
- rtx_insn_list *delay_list,
+ vec<rtx_insn *> *delay_list,
struct resources *sets,
struct resources *needed,
struct resources *other_needed,
unconditional branch. */
if (! simplejump_or_return_p (seq->insn (0)))
- return delay_list;
+ return;
for (i = 1; i < seq->len (); i++)
{
break;
/* If this insn was already done, we don't need it. */
- if (redundant_insn (trial, insn, delay_list))
+ if (redundant_insn (trial, insn, *delay_list))
{
update_block (trial, insn);
delete_from_delay_slot (trial);
|| (! insn_sets_resource_p (trial, other_needed, false)
&& ! may_trap_or_fault_p (PATTERN (trial)))))
? eligible_for_delay (insn, *pslots_filled, trial, flags)
- : (must_annul || delay_list == NULL) && (must_annul = 1,
- check_annul_list_true_false (1, delay_list)
+ : (must_annul || delay_list->is_empty ()) && (must_annul = 1,
+ check_annul_list_true_false (1, *delay_list)
&& eligible_for_annul_true (insn, *pslots_filled, trial, flags)))
{
if (must_annul)
used_annul = 1;
delete_from_delay_slot (trial);
- delay_list = add_to_delay_list (trial, delay_list);
+ add_to_delay_list (trial, delay_list);
if (++(*pslots_filled) == slots_to_fill)
break;
if (used_annul)
*pannul_p = 1;
- return delay_list;
}
\f
/* Try merging insns starting at THREAD which match exactly the insns in
int num_slots = XVECLEN (PATTERN (insn), 0);
rtx next_to_match = XVECEXP (PATTERN (insn), 0, slot_number);
struct resources set, needed, modified;
- rtx_insn_list *merged_insns = 0;
- int i, j;
+ auto_vec<std::pair<rtx_insn *, bool>, 10> merged_insns;
int flags;
flags = get_jump_flags (delay_insn, JUMP_LABEL (delay_insn));
will essentially disable this optimization. This method is somewhat of
a kludge, but I don't see a better way.) */
if (! annul_p)
- for (i = 1 ; i < num_slots; i++)
+ for (int i = 1; i < num_slots; i++)
if (XVECEXP (PATTERN (insn), 0, i))
mark_referenced_resources (XVECEXP (PATTERN (insn), 0, i), &needed,
true);
INSN_FROM_TARGET_P (next_to_match) = 0;
}
else
- merged_insns = gen_rtx_INSN_LIST (VOIDmode, trial, merged_insns);
+ merged_insns.safe_push (std::pair<rtx_insn *, bool> (trial, false));
if (++slot_number == num_slots)
break;
mark_set_resources (filled_insn, &set, 0, MARK_SRC_DEST_CALL);
mark_referenced_resources (filled_insn, &needed, true);
- for (i = 1; i < pat->len (); i++)
+ for (int i = 1; i < pat->len (); i++)
{
rtx_insn *dtrial = pat->insn (i);
CLEAR_RESOURCE (&modified);
- /* Account for resources set by the the insn following NEXT_TO_MATCH
+ /* Account for resources set by the insn following NEXT_TO_MATCH
inside INSN's delay list. */
- for (j = 1; slot_number + j < num_slots; j++)
+ for (int j = 1; slot_number + j < num_slots; j++)
mark_set_resources (XVECEXP (PATTERN (insn), 0, slot_number + j),
&modified, 0, MARK_SRC_DEST_CALL);
- /* Account for resources set by the the insn before DTRIAL and inside
+ /* Account for resources set by the insn before DTRIAL and inside
TRIAL's delay list. */
- for (j = 1; j < i; j++)
+ for (int j = 1; j < i; j++)
mark_set_resources (XVECEXP (pat, 0, j),
&modified, 0, MARK_SRC_DEST_CALL);
if (! insn_references_resource_p (dtrial, &set, true)
INSN_FROM_TARGET_P (next_to_match) = 0;
}
else
- merged_insns = gen_rtx_INSN_LIST (SImode, dtrial,
- merged_insns);
+ merged_insns.safe_push (std::pair<rtx_insn *, bool> (dtrial,
+ true));
if (++slot_number == num_slots)
break;
target. */
if (slot_number == num_slots && annul_p)
{
- for (; merged_insns; merged_insns = merged_insns->next ())
- {
- if (GET_MODE (merged_insns) == SImode)
- {
- rtx_insn *new_rtx;
-
- update_block (merged_insns->insn (), thread);
- new_rtx = delete_from_delay_slot (merged_insns->insn ());
- if (thread->deleted ())
- thread = new_rtx;
- }
- else
- {
- update_block (merged_insns->insn (), thread);
- delete_related_insns (merged_insns->insn ());
- }
- }
+ unsigned int len = merged_insns.length ();
+ for (unsigned int i = len - 1; i < len; i--)
+ if (merged_insns[i].second)
+ {
+ update_block (merged_insns[i].first, thread);
+ rtx_insn *new_rtx = delete_from_delay_slot (merged_insns[i].first);
+ if (thread->deleted ())
+ thread = new_rtx;
+ }
+ else
+ {
+ update_block (merged_insns[i].first, thread);
+ delete_related_insns (merged_insns[i].first);
+ }
INSN_ANNULLED_BRANCH_P (delay_insn) = 0;
- for (i = 0; i < XVECLEN (PATTERN (insn), 0); i++)
+ for (int i = 0; i < XVECLEN (PATTERN (insn), 0); i++)
INSN_FROM_TARGET_P (XVECEXP (PATTERN (insn), 0, i)) = 0;
}
}
redundant insn, but the cost of splitting seems greater than the possible
gain in rare cases. */
-static rtx
-redundant_insn (rtx insn, rtx_insn *target, rtx delay_list)
+static rtx_insn *
+redundant_insn (rtx insn, rtx_insn *target, const vec<rtx_insn *> &delay_list)
{
rtx target_main = target;
rtx ipat = PATTERN (insn);
/* This insn isn't redundant if it conflicts with an insn that either is
or will be in a delay slot of TARGET. */
- while (delay_list)
- {
- if (insn_sets_resource_p (XEXP (delay_list, 0), &needed, true))
- return 0;
- delay_list = XEXP (delay_list, 1);
- }
+ unsigned int j;
+ rtx_insn *temp;
+ FOR_EACH_VEC_ELT (delay_list, j, temp)
+ if (insn_sets_resource_p (temp, &needed, true))
+ return 0;
if (NONJUMP_INSN_P (target) && GET_CODE (PATTERN (target)) == SEQUENCE)
for (i = 1; i < XVECLEN (PATTERN (target), 0); i++)
resource requirements as we go. */
for (i = seq->len () - 1; i > 0; i--)
{
- rtx candidate = seq->element (i);
+ rtx_insn *candidate = seq->insn (i);
/* If an insn will be annulled if the branch is false, it isn't
considered as a possible duplicate insn. */
}
\f
/* Called when INSN is being moved from a location near the target of a jump.
- We leave a marker of the form (use (INSN)) immediately in front
- of WHERE for mark_target_live_regs. These markers will be deleted when
- reorg finishes.
+ We leave a marker of the form (use (INSN)) immediately in front of WHERE
+ for mark_target_live_regs. These markers will be deleted at the end.
We used to try to update the live status of registers if WHERE is at
the start of a basic block, but that can't work since we may remove a
BARRIER in relax_delay_slots. */
static void
-update_block (rtx_insn *insn, rtx where)
+update_block (rtx_insn *insn, rtx_insn *where)
{
- /* Ignore if this was in a delay slot and it came from the target of
- a branch. */
- if (INSN_FROM_TARGET_P (insn))
- return;
-
emit_insn_before (gen_rtx_USE (VOIDmode, insn), where);
/* INSN might be making a value live in a block where it didn't use to
be. So recompute liveness information for this block. */
-
incr_ticks_for_insn (insn);
}
confused into thinking the register is dead. */
static void
-fix_reg_dead_note (rtx start_insn, rtx stop_insn)
+fix_reg_dead_note (rtx_insn *start_insn, rtx stop_insn)
{
rtx link, next;
rtx_insn *p;
does. */
static void
-update_reg_unused_notes (rtx insn, rtx redundant_insn)
+update_reg_unused_notes (rtx_insn *insn, rtx redundant_insn)
{
rtx link, next;
int num_unfilled_slots = unfilled_slots_next - unfilled_slots_base;
struct resources needed, set;
int slots_to_fill, slots_filled;
- rtx_insn_list *delay_list;
+ auto_vec<rtx_insn *, 5> delay_list;
for (i = 0; i < num_unfilled_slots; i++)
{
CALL_INSNs. */
slots_filled = 0;
- delay_list = 0;
+ delay_list.truncate (0);
if (JUMP_P (insn))
flags = get_jump_flags (insn, JUMP_LABEL (insn));
{
rtx_insn **tmp;
slots_filled++;
- delay_list = add_to_delay_list (trial, delay_list);
+ add_to_delay_list (trial, &delay_list);
/* TRIAL may have had its delay slot filled, then unfilled. When
the delay slot is unfilled, TRIAL is placed back on the unfilled
tail, of the list. */
update_reg_dead_notes (trial, insn);
- delay_list = gen_rtx_INSN_LIST (VOIDmode,
- trial, delay_list);
+ delay_list.safe_insert (0, trial);
update_block (trial, trial);
delete_related_insns (trial);
if (slots_to_fill == ++slots_filled)
/* If all needed slots haven't been filled, we come here. */
/* Try to optimize case of jumping around a single insn. */
-#if defined(ANNUL_IFFALSE_SLOTS) || defined(ANNUL_IFTRUE_SLOTS)
- if (slots_filled != slots_to_fill
- && delay_list == 0
+ if ((ANNUL_IFTRUE_SLOTS || ANNUL_IFFALSE_SLOTS)
+ && slots_filled != slots_to_fill
+ && delay_list.is_empty ()
&& JUMP_P (insn)
&& (condjump_p (insn) || condjump_in_parallel_p (insn))
&& !ANY_RETURN_P (JUMP_LABEL (insn)))
{
- delay_list = optimize_skip (as_a <rtx_jump_insn *> (insn));
- if (delay_list)
+ optimize_skip (as_a <rtx_jump_insn *> (insn), &delay_list);
+ if (!delay_list.is_empty ())
slots_filled += 1;
}
-#endif
/* Try to get insns from beyond the insn needing the delay slot.
These insns can neither set or reference resources set in insns being
&& ! can_throw_internal (trial))
{
next_trial = next_nonnote_insn (trial);
- delay_list = add_to_delay_list (trial, delay_list);
+ add_to_delay_list (trial, &delay_list);
if (HAVE_cc0 && reg_mentioned_p (cc0_rtx, pat))
link_cc0_insns (trial);
&& trial
&& jump_to_label_p (trial)
&& simplejump_p (trial)
- && (next_trial = next_active_insn (JUMP_LABEL (trial))) != 0
+ && (next_trial = next_active_insn (JUMP_LABEL_AS_INSN (trial))) != 0
&& ! (NONJUMP_INSN_P (next_trial)
&& GET_CODE (PATTERN (next_trial)) == SEQUENCE)
&& !JUMP_P (next_trial)
if (new_label)
{
- delay_list
- = add_to_delay_list (copy_delay_slot_insn (next_trial),
- delay_list);
+ add_to_delay_list (copy_delay_slot_insn (next_trial),
+ &delay_list);
slots_filled++;
reorg_redirect_jump (as_a <rtx_jump_insn *> (trial),
new_label);
if ((jump_insn = dyn_cast <rtx_jump_insn *> (insn))
&& simplejump_p (jump_insn)
&& slots_filled != slots_to_fill)
- delay_list
- = fill_slots_from_thread (jump_insn, const_true_rtx,
- next_active_insn (JUMP_LABEL (insn)),
- NULL, 1, 1,
- own_thread_p (JUMP_LABEL (insn),
- JUMP_LABEL (insn), 0),
- slots_to_fill, &slots_filled,
- delay_list);
-
- if (delay_list)
+ fill_slots_from_thread (jump_insn, const_true_rtx,
+ next_active_insn (JUMP_LABEL_AS_INSN (insn)),
+ NULL, 1, 1, own_thread_p (JUMP_LABEL (insn),
+ JUMP_LABEL (insn), 0),
+ slots_to_fill, &slots_filled, &delay_list);
+
+ if (!delay_list.is_empty ())
unfilled_slots_base[i]
= emit_delay_sequence (insn, delay_list, slots_filled);
case, we can only take insns from the head of the thread for our delay
slot. We then adjust the jump to point after the insns we have taken. */
-static rtx_insn_list *
+static void
fill_slots_from_thread (rtx_jump_insn *insn, rtx condition,
rtx thread_or_return, rtx opposite_thread, int likely,
int thread_if_true, int own_thread, int slots_to_fill,
- int *pslots_filled, rtx_insn_list *delay_list)
+ int *pslots_filled, vec<rtx_insn *> *delay_list)
{
rtx new_thread;
struct resources opposite_needed, set, needed;
/* If our thread is the end of subroutine, we can't get any delay
insns from that. */
if (thread_or_return == NULL_RTX || ANY_RETURN_P (thread_or_return))
- return delay_list;
+ return;
rtx_insn *thread = as_a <rtx_insn *> (thread_or_return);
&& (! own_thread || ! sets_cc0_p (pat)))))
&& ! can_throw_internal (trial))
{
- rtx prior_insn;
+ rtx_insn *prior_insn;
/* If TRIAL is redundant with some insn before INSN, we don't
actually need to add it to the delay list; we can merely pretend
we did. */
- if ((prior_insn = redundant_insn (trial, insn, delay_list)))
+ if ((prior_insn = redundant_insn (trial, insn, *delay_list)))
{
fix_reg_dead_note (prior_insn, insn);
if (own_thread)
if (eligible_for_delay (insn, *pslots_filled, trial, flags))
goto winner;
}
- else if (0
-#ifdef ANNUL_IFTRUE_SLOTS
- || ! thread_if_true
-#endif
-#ifdef ANNUL_IFFALSE_SLOTS
- || thread_if_true
-#endif
- )
+ else if (!RTX_FRAME_RELATED_P (trial)
+ && ((ANNUL_IFTRUE_SLOTS && ! thread_if_true)
+ || (ANNUL_IFFALSE_SLOTS && thread_if_true)))
{
old_trial = trial;
trial = try_split (pat, trial, 0);
if (thread == old_trial)
thread = trial;
pat = PATTERN (trial);
- if ((must_annul || delay_list == NULL) && (thread_if_true
- ? check_annul_list_true_false (0, delay_list)
+ if ((must_annul || delay_list->is_empty ()) && (thread_if_true
+ ? check_annul_list_true_false (0, *delay_list)
&& eligible_for_annul_false (insn, *pslots_filled, trial, flags)
- : check_annul_list_true_false (1, delay_list)
+ : check_annul_list_true_false (1, *delay_list)
&& eligible_for_annul_true (insn, *pslots_filled, trial, flags)))
{
rtx_insn *temp;
if (thread_if_true)
INSN_FROM_TARGET_P (temp) = 1;
- delay_list = add_to_delay_list (temp, delay_list);
+ add_to_delay_list (temp, delay_list);
if (slots_to_fill == ++(*pslots_filled))
{
&set, true)
&& (prior_insn
= redundant_insn (new_thread, insn,
- delay_list)))
+ *delay_list)))
{
/* We know we do not own the thread, so no need
to call update_block and delete_insn. */
fix_reg_dead_note (prior_insn, insn);
update_reg_unused_notes (prior_insn, new_thread);
- new_thread = next_active_insn (new_thread);
+ new_thread
+ = next_active_insn (as_a<rtx_insn *> (new_thread));
}
break;
}
so we can only do this if we have taken everything up to here. */
if (thread_if_true && trial == new_thread)
{
- delay_list
- = steal_delay_list_from_target (insn, condition, sequence,
- delay_list, &set, &needed,
- &opposite_needed, slots_to_fill,
- pslots_filled, &must_annul,
- &new_thread);
+ steal_delay_list_from_target (insn, condition, sequence,
+ delay_list, &set, &needed,
+ &opposite_needed, slots_to_fill,
+ pslots_filled, &must_annul,
+ &new_thread);
/* If we owned the thread and are told that it branched
elsewhere, make sure we own the thread at the new location. */
if (own_thread && trial != new_thread)
own_thread = own_thread_p (new_thread, new_thread, 0);
}
else if (! thread_if_true)
- delay_list
- = steal_delay_list_from_fallthrough (insn, condition,
- sequence,
- delay_list, &set, &needed,
- &opposite_needed, slots_to_fill,
- pslots_filled, &must_annul);
+ steal_delay_list_from_fallthrough (insn, condition, sequence,
+ delay_list, &set, &needed,
+ &opposite_needed, slots_to_fill,
+ pslots_filled, &must_annul);
}
/* If we haven't found anything for this delay slot and it is very
depend on the destination register. If so, try to place the opposite
arithmetic insn after the jump insn and put the arithmetic insn in the
delay slot. If we can't do this, return. */
- if (delay_list == 0 && likely
+ if (delay_list->is_empty () && likely
&& new_thread && !ANY_RETURN_P (new_thread)
&& NONJUMP_INSN_P (new_thread)
&& !RTX_FRAME_RELATED_P (new_thread)
|| GET_CODE (pat) != SET
|| ! eligible_for_delay (insn, 0, trial, flags)
|| can_throw_internal (trial))
- return 0;
+ return;
dest = SET_DEST (pat), src = SET_SRC (pat);
if ((GET_CODE (src) == PLUS || GET_CODE (src) == MINUS)
!constrain_operands (1, get_preferred_alternatives (ninsn))))
{
delete_related_insns (ninsn);
- return 0;
+ return;
}
if (own_thread)
if (thread_if_true)
INSN_FROM_TARGET_P (ninsn) = 1;
- delay_list = add_to_delay_list (ninsn, NULL);
+ add_to_delay_list (ninsn, delay_list);
(*pslots_filled)++;
}
}
- if (delay_list && must_annul)
+ if (!delay_list->is_empty () && must_annul)
INSN_ANNULLED_BRANCH_P (insn) = 1;
/* If we are to branch into the middle of this thread, find an appropriate
if (new_thread && simplejump_or_return_p (new_thread)
&& redirect_with_delay_list_safe_p (insn,
JUMP_LABEL (new_thread),
- delay_list))
+ *delay_list))
new_thread = follow_jumps (JUMP_LABEL (new_thread), insn,
&crossing);
CROSSING_JUMP_P (insn) = 1;
}
}
-
- return delay_list;
}
\f
/* Make another attempt to find insns to place in delay slots.
rtx condition;
rtx target_label, insn_at_target;
rtx_insn *fallthrough_insn;
- rtx_insn_list *delay_list = 0;
+ auto_vec<rtx_insn *, 5> delay_list;
rtx_jump_insn *jump_insn;
int own_target;
int own_fallthrough;
if (prediction > 0)
{
- delay_list
- = fill_slots_from_thread (jump_insn, condition, insn_at_target,
- fallthrough_insn, prediction == 2, 1,
- own_target,
- slots_to_fill, &slots_filled, delay_list);
+ fill_slots_from_thread (jump_insn, condition, insn_at_target,
+ fallthrough_insn, prediction == 2, 1,
+ own_target,
+ slots_to_fill, &slots_filled, &delay_list);
- if (delay_list == 0 && own_fallthrough)
+ if (delay_list.is_empty () && own_fallthrough)
{
/* Even though we didn't find anything for delay slots,
we might have found a redundant insn which we deleted
target_label = JUMP_LABEL (jump_insn);
insn_at_target = first_active_target_insn (target_label);
- delay_list
- = fill_slots_from_thread (jump_insn, condition,
- fallthrough_insn,
- insn_at_target, 0, 0,
- own_fallthrough,
- slots_to_fill, &slots_filled,
- delay_list);
+ fill_slots_from_thread (jump_insn, condition, fallthrough_insn,
+ insn_at_target, 0, 0, own_fallthrough,
+ slots_to_fill, &slots_filled,
+ &delay_list);
}
}
else
{
if (own_fallthrough)
- delay_list
- = fill_slots_from_thread (jump_insn, condition, fallthrough_insn,
- insn_at_target, 0, 0,
- own_fallthrough,
- slots_to_fill, &slots_filled,
- delay_list);
-
- if (delay_list == 0)
- delay_list
- = fill_slots_from_thread (jump_insn, condition, insn_at_target,
- next_active_insn (insn), 0, 1,
- own_target,
- slots_to_fill, &slots_filled,
- delay_list);
+ fill_slots_from_thread (jump_insn, condition, fallthrough_insn,
+ insn_at_target, 0, 0, own_fallthrough,
+ slots_to_fill, &slots_filled, &delay_list);
+
+ if (delay_list.is_empty ())
+ fill_slots_from_thread (jump_insn, condition, insn_at_target,
+ next_active_insn (insn), 0, 1, own_target,
+ slots_to_fill, &slots_filled, &delay_list);
}
- if (delay_list)
+ if (!delay_list.is_empty ())
unfilled_slots_base[i]
= emit_delay_sequence (jump_insn, delay_list, slots_filled);
}
}
\f
-static void delete_computation (rtx insn);
+static void delete_computation (rtx_insn *insn);
/* Recursively delete prior insns that compute the value (used only by INSN
which the caller is deleting) stored in the register mentioned by NOTE
which is a REG_DEAD note associated with INSN. */
static void
-delete_prior_computation (rtx note, rtx insn)
+delete_prior_computation (rtx note, rtx_insn *insn)
{
- rtx our_prev;
+ rtx_insn *our_prev;
rtx reg = XEXP (note, 0);
for (our_prev = prev_nonnote_insn (insn);
delete the insn that set it. */
static void
-delete_computation (rtx insn)
+delete_computation (rtx_insn *insn)
{
rtx note, next;
}
static rtx_insn *
-label_before_next_insn (rtx x, rtx scan_limit)
+label_before_next_insn (rtx_insn *x, rtx scan_limit)
{
rtx_insn *insn = next_active_insn (x);
while (insn)
{
rtx_insn *insn, *next;
rtx_sequence *pat;
- rtx trial;
rtx_insn *delay_insn;
rtx target_label;
if (ANY_RETURN_P (target_label))
target_label = find_end_label (target_label);
- if (target_label && next_active_insn (target_label) == next
+ if (target_label
+ && next_active_insn (as_a<rtx_insn *> (target_label)) == next
&& ! condjump_in_parallel_p (jump_insn)
&& ! (next && switch_text_sections_between_p (jump_insn, next)))
{
if (next && simplejump_or_return_p (next)
&& any_condjump_p (jump_insn)
&& target_label
- && next_active_insn (target_label) == next_active_insn (next)
+ && (next_active_insn (as_a<rtx_insn *> (target_label))
+ == next_active_insn (next))
&& no_labels_between_p (jump_insn, next)
&& targetm.can_follow_jump (jump_insn, next))
{
&& (other = prev_active_insn (insn)) != 0
&& any_condjump_p (other)
&& no_labels_between_p (other, insn)
- && 0 > mostly_true_jump (other))
+ && mostly_true_jump (other) < 0)
{
rtx other_target = JUMP_LABEL (other);
target_label = JUMP_LABEL (insn);
/* See if the first insn in the delay slot is redundant with some
previous insn. Remove it from the delay slot if so; then set up
to reprocess this insn. */
- if (redundant_insn (pat->insn (1), delay_insn, 0))
+ if (redundant_insn (pat->insn (1), delay_insn, vNULL))
{
update_block (pat->insn (1), insn);
delete_from_delay_slot (pat->insn (1));
for (i = 0; i < XVECLEN (pat, 0); i++)
INSN_FROM_TARGET_P (XVECEXP (pat, 0, i)) = 0;
- trial = PREV_INSN (insn);
+ rtx_insn *prev = PREV_INSN (insn);
delete_related_insns (insn);
gcc_assert (GET_CODE (pat) == SEQUENCE);
- add_insn_after (delay_insn, trial, NULL);
+ add_insn_after (delay_insn, prev, NULL);
after = delay_insn;
for (i = 1; i < pat->len (); i++)
after = emit_copy_of_insn_after (pat->insn (i), after);
/* If this jump goes to another unconditional jump, thread it, but
don't convert a jump into a RETURN here. */
- trial = skip_consecutive_labels (follow_jumps (target_label,
- delay_jump_insn,
- &crossing));
+ rtx trial = skip_consecutive_labels (follow_jumps (target_label,
+ delay_jump_insn,
+ &crossing));
if (ANY_RETURN_P (trial))
trial = find_end_label (trial);
reorg_redirect_jump (delay_jump_insn, trial);
target_label = trial;
if (crossing)
- CROSSING_JUMP_P (insn) = 1;
+ CROSSING_JUMP_P (delay_jump_insn) = 1;
}
/* If the first insn at TARGET_LABEL is redundant with a previous
liveness info. */
trial = next_real_insn (target_label);
if (trial && GET_CODE (PATTERN (trial)) != SEQUENCE
- && redundant_insn (trial, insn, 0)
+ && redundant_insn (trial, insn, vNULL)
&& ! can_throw_internal (trial))
{
/* Figure out where to emit the special USE insn so we don't
later incorrectly compute register live/death info. */
- rtx_insn *tmp = next_active_insn (trial);
+ rtx_insn *tmp = next_active_insn (as_a<rtx_insn *> (trial));
if (tmp == 0)
tmp = find_end_label (simple_return_rtx);
&& trial_seq->len () == 2
&& JUMP_P (trial_seq->insn (0))
&& simplejump_or_return_p (trial_seq->insn (0))
- && redundant_insn (trial_seq->insn (1), insn, 0))
+ && redundant_insn (trial_seq->insn (1), insn, vNULL))
{
- target_label = JUMP_LABEL (trial_seq->insn (0));
- if (ANY_RETURN_P (target_label))
- target_label = find_end_label (target_label);
+ rtx temp_label = JUMP_LABEL (trial_seq->insn (0));
+ if (ANY_RETURN_P (temp_label))
+ temp_label = find_end_label (temp_label);
- if (target_label
+ if (temp_label
&& redirect_with_delay_slots_safe_p (delay_jump_insn,
- target_label, insn))
+ temp_label, insn))
{
update_block (trial_seq->insn (1), insn);
- reorg_redirect_jump (delay_jump_insn, target_label);
+ reorg_redirect_jump (delay_jump_insn, temp_label);
next = insn;
continue;
}
}
/* See if we have a simple (conditional) jump that is useless. */
- if (! INSN_ANNULLED_BRANCH_P (delay_jump_insn)
- && ! condjump_in_parallel_p (delay_jump_insn)
- && prev_active_insn (target_label) == insn
- && ! BARRIER_P (prev_nonnote_insn (target_label))
-#if HAVE_cc0
+ if (!CROSSING_JUMP_P (delay_jump_insn)
+ && !INSN_ANNULLED_BRANCH_P (delay_jump_insn)
+ && !condjump_in_parallel_p (delay_jump_insn)
+ && prev_active_insn (as_a<rtx_insn *> (target_label)) == insn
+ && !BARRIER_P (prev_nonnote_insn (as_a<rtx_insn *> (target_label)))
/* If the last insn in the delay slot sets CC0 for some insn,
various code assumes that it is in a delay slot. We could
put it back where it belonged and delete the register notes,
but it doesn't seem worthwhile in this uncommon case. */
- && ! find_reg_note (XVECEXP (pat, 0, XVECLEN (pat, 0) - 1),
- REG_CC_USER, NULL_RTX)
-#endif
- )
+ && (!HAVE_cc0
+ || ! find_reg_note (XVECEXP (pat, 0, XVECLEN (pat, 0) - 1),
+ REG_CC_USER, NULL_RTX)))
{
rtx_insn *after;
int i;
for (i = 0; i < XVECLEN (pat, 0); i++)
INSN_FROM_TARGET_P (XVECEXP (pat, 0, i)) = 0;
- trial = PREV_INSN (insn);
+ rtx_insn *prev = PREV_INSN (insn);
delete_related_insns (insn);
gcc_assert (GET_CODE (pat) == SEQUENCE);
- add_insn_after (delay_jump_insn, trial, NULL);
+ add_insn_after (delay_jump_insn, prev, NULL);
after = delay_jump_insn;
for (i = 1; i < pat->len (); i++)
after = emit_copy_of_insn_after (pat->insn (i), after);
if (! INSN_ANNULLED_BRANCH_P (delay_jump_insn)
&& any_condjump_p (delay_jump_insn)
&& next && simplejump_or_return_p (next)
- && next_active_insn (target_label) == next_active_insn (next)
+ && (next_active_insn (as_a<rtx_insn *> (target_label))
+ == next_active_insn (next))
&& no_labels_between_p (insn, next))
{
rtx label = JUMP_LABEL (next);
try_merge_delay_insns (insn, next);
else if (! INSN_FROM_TARGET_P (pat->insn (1))
&& own_thread_p (target_label, target_label, 0))
- try_merge_delay_insns (insn, next_active_insn (target_label));
+ try_merge_delay_insns (insn,
+ next_active_insn (as_a<rtx_insn *> (target_label)));
/* If we get here, we haven't deleted INSN. But we may have deleted
NEXT, so recompute it. */
{
for (i = 1; i < XVECLEN (pat, 0); i++)
if (! (
-#ifdef ANNUL_IFFALSE_SLOTS
+#if ANNUL_IFFALSE_SLOTS
(INSN_ANNULLED_BRANCH_P (jump_insn)
&& INSN_FROM_TARGET_P (pat->insn (i)))
? eligible_for_annul_false (jump_insn, i - 1,
pat->insn (i), flags) :
#endif
-#ifdef ANNUL_IFTRUE_SLOTS
+#if ANNUL_IFTRUE_SLOTS
(INSN_ANNULLED_BRANCH_P (jump_insn)
&& ! INSN_FROM_TARGET_P (pat->insn (i)))
? eligible_for_annul_true (jump_insn, i - 1,
delete_related_insns (insn);
for (i = 1; i < XVECLEN (pat, 0); i++)
- prev = emit_insn_after (PATTERN (XVECEXP (pat, 0, i)), prev);
+ {
+ rtx_insn *in_seq_insn = as_a<rtx_insn *> (XVECEXP (pat, 0, i));
+ prev = emit_insn_after_setloc (PATTERN (in_seq_insn), prev,
+ INSN_LOCATION (in_seq_insn));
+ }
- insn = emit_jump_insn_after (PATTERN (jump_insn), prev);
+ insn = emit_jump_insn_after_setloc (PATTERN (jump_insn), prev,
+ INSN_LOCATION (jump_insn));
emit_barrier_after (insn);
if (slots)
{
fill_simple_delay_slots (1);
fill_simple_delay_slots (0);
- fill_eager_delay_slots ();
+ if (!targetm.no_speculation_in_delay_slots_p ())
+ fill_eager_delay_slots ();
relax_delay_slots (first);
}
}
}
fprintf (dump_file, "\n");
-#if defined (ANNUL_IFTRUE_SLOTS) || defined (ANNUL_IFFALSE_SLOTS)
- fprintf (dump_file, ";; Reorg annuls: ");
- need_comma = 0;
- for (j = 0; j < MAX_DELAY_HISTOGRAM + 1; j++)
+
+ if (ANNUL_IFTRUE_SLOTS || ANNUL_IFFALSE_SLOTS)
{
- if (total_annul_slots[j])
+ fprintf (dump_file, ";; Reorg annuls: ");
+ need_comma = 0;
+ for (j = 0; j < MAX_DELAY_HISTOGRAM + 1; j++)
{
- if (need_comma)
- fprintf (dump_file, ", ");
- need_comma = 1;
- fprintf (dump_file, "%d got %d delays", total_annul_slots[j], j);
+ if (total_annul_slots[j])
+ {
+ if (need_comma)
+ fprintf (dump_file, ", ");
+ need_comma = 1;
+ fprintf (dump_file, "%d got %d delays", total_annul_slots[j], j);
+ }
}
+ fprintf (dump_file, "\n");
}
- fprintf (dump_file, "\n");
-#endif
+
fprintf (dump_file, "\n");
}
free (uid_to_ruid);
crtl->dbr_scheduled_p = true;
}
-#endif /* DELAY_SLOTS */
\f
/* Run delay slot optimization. */
static unsigned int
rest_of_handle_delay_slots (void)
{
-#ifdef DELAY_SLOTS
- dbr_schedule (get_insns ());
-#endif
+ if (DELAY_SLOTS)
+ dbr_schedule (get_insns ());
+
return 0;
}
bool
pass_delay_slots::gate (function *)
{
-#ifdef DELAY_SLOTS
/* At -O0 dataflow info isn't updated after RA. */
- return optimize > 0 && flag_delayed_branch && !crtl->dbr_scheduled_p;
-#else
- return 0;
-#endif
+ if (DELAY_SLOTS)
+ return optimize > 0 && flag_delayed_branch && !crtl->dbr_scheduled_p;
+
+ return false;
}
} // anon namespace