#include "ggc.h"
#include "alloc-pool.h"
#include "flags.h"
+#include "tree-pass.h"
/* Holds the interesting trailing notes for the function. */
rtx cfg_layout_function_footer, cfg_layout_function_header;
rtx end;
if (PREV_INSN (BB_HEAD (bb)) && next_insn != BB_HEAD (bb))
- bb->rbi->header = unlink_insn_chain (next_insn,
+ bb->il.rtl->header = unlink_insn_chain (next_insn,
PREV_INSN (BB_HEAD (bb)));
end = skip_insns_after_block (bb);
if (NEXT_INSN (BB_END (bb)) && BB_END (bb) != end)
- bb->rbi->footer = unlink_insn_chain (NEXT_INSN (BB_END (bb)), end);
+ bb->il.rtl->footer = unlink_insn_chain (NEXT_INSN (BB_END (bb)), end);
next_insn = NEXT_INSN (BB_END (bb));
}
free_block_changes ();
}
+struct tree_opt_pass pass_insn_locators_initialize =
+{
+ "locators", /* name */
+ NULL, /* gate */
+ insn_locators_initialize, /* execute */
+ NULL, /* sub */
+ NULL, /* next */
+ 0, /* static_pass_number */
+ 0, /* tv_id */
+ 0, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ TODO_dump_func, /* todo_flags_finish */
+ 0 /* letter */
+};
+
+
/* For each lexical block, set BLOCK_NUMBER to the depth at which it is
found in the block tree. */
for (bb = ENTRY_BLOCK_PTR->next_bb, index = 0;
bb != 0;
- bb = bb->rbi->next, index++)
+ bb = bb->aux, index++)
{
- if (bb->rbi->header)
+ if (bb->il.rtl->header)
{
if (insn)
- NEXT_INSN (insn) = bb->rbi->header;
+ NEXT_INSN (insn) = bb->il.rtl->header;
else
- set_first_insn (bb->rbi->header);
- PREV_INSN (bb->rbi->header) = insn;
- insn = bb->rbi->header;
+ set_first_insn (bb->il.rtl->header);
+ PREV_INSN (bb->il.rtl->header) = insn;
+ insn = bb->il.rtl->header;
while (NEXT_INSN (insn))
insn = NEXT_INSN (insn);
}
set_first_insn (BB_HEAD (bb));
PREV_INSN (BB_HEAD (bb)) = insn;
insn = BB_END (bb);
- if (bb->rbi->footer)
+ if (bb->il.rtl->footer)
{
- NEXT_INSN (insn) = bb->rbi->footer;
- PREV_INSN (bb->rbi->footer) = insn;
+ NEXT_INSN (insn) = bb->il.rtl->footer;
+ PREV_INSN (bb->il.rtl->footer) = insn;
while (NEXT_INSN (insn))
insn = NEXT_INSN (insn);
}
/* Now add jumps and labels as needed to match the blocks new
outgoing edges. */
- for (bb = ENTRY_BLOCK_PTR->next_bb; bb ; bb = bb->rbi->next)
+ for (bb = ENTRY_BLOCK_PTR->next_bb; bb ; bb = bb->aux)
{
edge e_fall, e_taken, e;
rtx bb_end_insn;
if (any_condjump_p (bb_end_insn))
{
/* If the old fallthru is still next, nothing to do. */
- if (bb->rbi->next == e_fall->dest
+ if (bb->aux == e_fall->dest
|| e_fall->dest == EXIT_BLOCK_PTR)
continue;
such as happens at the very end of a function, then we'll
need to add a new unconditional jump. Choose the taken
edge based on known or assumed probability. */
- else if (bb->rbi->next != e_taken->dest)
+ else if (bb->aux != e_taken->dest)
{
rtx note = find_reg_note (bb_end_insn, REG_BR_PROB, 0);
continue;
/* If the fallthru block is still next, nothing to do. */
- if (bb->rbi->next == e_fall->dest)
+ if (bb->aux == e_fall->dest)
continue;
/* A fallthru to exit block. */
nb = force_nonfallthru (e_fall);
if (nb)
{
- initialize_bb_rbi (nb);
- nb->rbi->visited = 1;
- nb->rbi->next = bb->rbi->next;
- bb->rbi->next = nb;
+ nb->il.rtl->visited = 1;
+ nb->aux = bb->aux;
+ bb->aux = nb;
/* Don't process this new block. */
bb = nb;
fprintf (dump_file, "Reordered sequence:\n");
for (bb = ENTRY_BLOCK_PTR->next_bb, index = 0;
bb;
- bb = bb->rbi->next, index++)
+ bb = bb->aux, index++)
{
fprintf (dump_file, " %i ", index);
if (get_bb_original (bb))
bb = ENTRY_BLOCK_PTR->next_bb;
index = 0;
- for (; bb; prev_bb = bb, bb = bb->rbi->next, index ++)
+ for (; bb; prev_bb = bb, bb = bb->aux, index ++)
{
bb->index = index;
BASIC_BLOCK (index) = bb;
if (e->flags & EDGE_FALLTHRU)
bb = e->src;
- if (bb && bb->rbi->next)
+ if (bb && bb->aux)
{
basic_block c = ENTRY_BLOCK_PTR->next_bb;
if (c == bb)
{
bb = split_block (bb, NULL)->dest;
- initialize_bb_rbi (bb);
- bb->rbi->next = c->rbi->next;
- c->rbi->next = bb;
- bb->rbi->footer = c->rbi->footer;
- c->rbi->footer = NULL;
+ bb->aux = c->aux;
+ c->aux = bb;
+ bb->il.rtl->footer = c->il.rtl->footer;
+ c->il.rtl->footer = NULL;
}
- while (c->rbi->next != bb)
- c = c->rbi->next;
+ while (c->aux != bb)
+ c = c->aux;
- c->rbi->next = bb->rbi->next;
- while (c->rbi->next)
- c = c->rbi->next;
+ c->aux = bb->aux;
+ while (c->aux)
+ c = c->aux;
- c->rbi->next = bb;
- bb->rbi->next = NULL;
+ c->aux = bb;
+ bb->aux = NULL;
}
}
\f
EXIT_BLOCK_PTR->prev_bb);
BB_COPY_PARTITION (new_bb, bb);
- if (bb->rbi->header)
+ if (bb->il.rtl->header)
{
- insn = bb->rbi->header;
+ insn = bb->il.rtl->header;
while (NEXT_INSN (insn))
insn = NEXT_INSN (insn);
- insn = duplicate_insn_chain (bb->rbi->header, insn);
+ insn = duplicate_insn_chain (bb->il.rtl->header, insn);
if (insn)
- new_bb->rbi->header = unlink_insn_chain (insn, get_last_insn ());
+ new_bb->il.rtl->header = unlink_insn_chain (insn, get_last_insn ());
}
- if (bb->rbi->footer)
+ if (bb->il.rtl->footer)
{
- insn = bb->rbi->footer;
+ insn = bb->il.rtl->footer;
while (NEXT_INSN (insn))
insn = NEXT_INSN (insn);
- insn = duplicate_insn_chain (bb->rbi->footer, insn);
+ insn = duplicate_insn_chain (bb->il.rtl->footer, insn);
if (insn)
- new_bb->rbi->footer = unlink_insn_chain (insn, get_last_insn ());
+ new_bb->il.rtl->footer = unlink_insn_chain (insn, get_last_insn ());
}
if (bb->il.rtl->global_live_at_start)
void
cfg_layout_initialize (unsigned int flags)
{
- basic_block bb;
-
- FOR_BB_BETWEEN (bb, ENTRY_BLOCK_PTR, NULL, next_bb)
- initialize_bb_rbi (bb);
-
initialize_original_copy_tables ();
cfg_layout_rtl_register_cfg_hooks ();
free (superblocks);
}
-/* Finalize the changes: reorder insn list according to the sequence, enter
- compensation code, rebuild scope forest. */
+/* Finalize the changes: reorder insn list according to the sequence specified
+ by aux pointers, enter compensation code, rebuild scope forest. */
void
cfg_layout_finalize (void)
verify_insn_chain ();
#endif
FOR_BB_BETWEEN (bb, ENTRY_BLOCK_PTR, NULL, next_bb)
- bb->rbi = NULL;
+ {
+ bb->il.rtl->header = bb->il.rtl->footer = NULL;
+ bb->aux = NULL;
+ bb->il.rtl->visited = 0;
+ }
break_superblocks ();
is copied, we do not set the new blocks as header or latch.
Created copies of N_EDGES edges in array EDGES are stored in array NEW_EDGES,
- also in the same order. */
+ also in the same order.
+
+ Newly created basic blocks are put after the basic block AFTER in the
+ instruction stream, and the order of the blocks in BBS array is preserved. */
void
copy_bbs (basic_block *bbs, unsigned n, basic_block *new_bbs,
edge *edges, unsigned num_edges, edge *new_edges,
- struct loop *base)
+ struct loop *base, basic_block after)
{
unsigned i, j;
basic_block bb, new_bb, dom_bb;
{
/* Duplicate. */
bb = bbs[i];
- new_bb = new_bbs[i] = duplicate_block (bb, NULL);
+ new_bb = new_bbs[i] = duplicate_block (bb, NULL, after);
+ after = new_bb;
bb->flags |= BB_DUPLICATED;
/* Add to loop. */
add_bb_to_loop (new_bb, bb->loop_father->copy);
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