/* Interprocedural analyses.
- Copyright (C) 2005, 2007, 2008, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2005, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
This file is part of GCC.
#include "timevar.h"
#include "flags.h"
#include "diagnostic.h"
+#include "lto-streamer.h"
/* Vector where the parameter infos are actually stored. */
VEC (ipa_node_params_t, heap) *ipa_node_params_vector;
/* Vector where the parameter infos are actually stored. */
-VEC (ipa_edge_args_t, heap) *ipa_edge_args_vector;
+VEC (ipa_edge_args_t, gc) *ipa_edge_args_vector;
+
+/* Bitmap with all UIDs of call graph edges that have been already processed
+ by indirect inlining. */
+static bitmap iinlining_processed_edges;
/* Holders of ipa cgraph hooks: */
static struct cgraph_edge_hook_list *edge_removal_hook_holder;
{
struct ipa_node_params *info = (struct ipa_node_params *) data;
- if (TREE_CODE (op) == PARM_DECL)
+ op = get_base_address (op);
+ if (op
+ && TREE_CODE (op) == PARM_DECL)
{
int index = ipa_get_param_decl_index (info, op);
gcc_assert (index >= 0);
arg_num = gimple_call_num_args (stmt);
if (VEC_length (ipa_edge_args_t, ipa_edge_args_vector)
<= (unsigned) cgraph_edge_max_uid)
- VEC_safe_grow_cleared (ipa_edge_args_t, heap,
+ VEC_safe_grow_cleared (ipa_edge_args_t, gc,
ipa_edge_args_vector, cgraph_edge_max_uid + 1);
ipa_set_cs_argument_count (IPA_EDGE_REF (cs), arg_num);
}
tree val = jump_func->value.constant;
fprintf (f, "CONST: ");
print_generic_expr (f, val, 0);
+ if (TREE_CODE (val) == ADDR_EXPR
+ && TREE_CODE (TREE_OPERAND (val, 0)) == CONST_DECL)
+ {
+ fprintf (f, " -> ");
+ print_generic_expr (f, DECL_INITIAL (TREE_OPERAND (val, 0)),
+ 0);
+ }
fprintf (f, "\n");
}
else if (type == IPA_JF_CONST_MEMBER_PTR)
{
if (TREE_CODE (op1) != SSA_NAME
|| !SSA_NAME_IS_DEFAULT_DEF (op1)
+ || (TREE_CODE_CLASS (gimple_expr_code (stmt)) != tcc_comparison
+ && !useless_type_conversion_p (TREE_TYPE (name),
+ TREE_TYPE (op1)))
|| !is_gimple_ip_invariant (op2))
return;
type = TREE_TYPE (op1);
op1 = get_ref_base_and_extent (op1, &offset, &size, &max_size);
- if (TREE_CODE (op1) != INDIRECT_REF)
+ if (TREE_CODE (op1) != INDIRECT_REF
+ /* If this is a varying address, punt. */
+ || max_size == -1
+ || max_size != size)
return;
op1 = TREE_OPERAND (op1, 0);
if (TREE_CODE (op1) != SSA_NAME
if (ipa_get_cs_argument_count (arguments) == 0 || arguments->jump_functions)
return;
- arguments->jump_functions = XCNEWVEC (struct ipa_jump_func,
- ipa_get_cs_argument_count (arguments));
+ arguments->jump_functions = GGC_CNEWVEC (struct ipa_jump_func,
+ ipa_get_cs_argument_count (arguments));
call = cs->call_stmt;
gcc_assert (is_gimple_call (call));
return false;
}
-/* Creates a new note describing a call to a parameter number FORMAL_ID and
- attaches it to the linked list of INFO. It also sets the called flag of the
- parameter. STMT is the corresponding call statement. */
+/* Create a new indirect call graph edge describing a call to a parameter
+ number FORMAL_ID and and set the called flag of the parameter. NODE is the
+ caller. STMT is the corresponding call statement. */
static void
-ipa_note_param_call (struct ipa_node_params *info, int formal_id,
- gimple stmt)
+ipa_note_param_call (struct cgraph_node *node, int formal_id, gimple stmt)
{
- struct ipa_param_call_note *note;
+ struct cgraph_edge *cs;
basic_block bb = gimple_bb (stmt);
+ int freq;
- info->params[formal_id].called = 1;
-
- note = XCNEW (struct ipa_param_call_note);
- note->formal_id = formal_id;
- note->stmt = stmt;
- note->count = bb->count;
- note->frequency = compute_call_stmt_bb_frequency (current_function_decl, bb);
-
- note->next = info->param_calls;
- info->param_calls = note;
-
- return;
+ freq = compute_call_stmt_bb_frequency (current_function_decl, bb);
+ cs = cgraph_create_indirect_edge (node, stmt, bb->count, freq,
+ bb->loop_depth);
+ cs->indirect_info->param_index = formal_id;
}
-/* Analyze the CALL and examine uses of formal parameters of the caller
+/* Analyze the CALL and examine uses of formal parameters of the caller NODE
(described by INFO). Currently it checks whether the call calls a pointer
that is a formal parameter and if so, the parameter is marked with the
- called flag and a note describing the call is created. This is very simple
- for ordinary pointers represented in SSA but not-so-nice when it comes to
- member pointers. The ugly part of this function does nothing more than
- tries to match the pattern of such a call. An example of such a pattern is
- the gimple dump below, the call is on the last line:
+ called flag and an indirect call graph edge describing the call is created.
+ This is very simple for ordinary pointers represented in SSA but not-so-nice
+ when it comes to member pointers. The ugly part of this function does
+ nothing more than trying to match the pattern of such a call. An example of
+ such a pattern is the gimple dump below, the call is on the last line:
<bb 2>:
f$__delta_5 = f.__delta;
*/
static void
-ipa_analyze_call_uses (struct ipa_node_params *info, gimple call)
+ipa_analyze_call_uses (struct cgraph_node *node, struct ipa_node_params *info,
+ gimple call)
{
tree target = gimple_call_fn (call);
gimple def;
/* assuming TREE_CODE (var) == PARM_DECL */
index = ipa_get_param_decl_index (info, var);
if (index >= 0)
- ipa_note_param_call (info, index, call);
+ ipa_note_param_call (node, index, call);
return;
}
index = ipa_get_param_decl_index (info, rec);
if (index >= 0 && !ipa_is_param_modified (info, index))
- ipa_note_param_call (info, index, call);
+ ipa_note_param_call (node, index, call);
return;
}
-/* Analyze the statement STMT with respect to formal parameters (described in
- INFO) and their uses. Currently it only checks whether formal parameters
- are called. */
+/* Analyze the call statement STMT with respect to formal parameters (described
+ in INFO) of caller given by NODE. Currently it only checks whether formal
+ parameters are called. */
static void
-ipa_analyze_stmt_uses (struct ipa_node_params *info, gimple stmt)
+ipa_analyze_stmt_uses (struct cgraph_node *node, struct ipa_node_params *info,
+ gimple stmt)
{
if (is_gimple_call (stmt))
- ipa_analyze_call_uses (info, stmt);
+ ipa_analyze_call_uses (node, info, stmt);
}
/* Scan the function body of NODE and inspect the uses of formal parameters.
for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
{
gimple stmt = gsi_stmt (gsi);
- ipa_analyze_stmt_uses (info, stmt);
+ ipa_analyze_stmt_uses (node, info, stmt);
}
}
by JFUNC. NODE is the node where the call is. */
static void
-print_edge_addition_message (FILE *f, struct ipa_param_call_note *nt,
- struct ipa_jump_func *jfunc,
- struct cgraph_node *node)
+print_edge_addition_message (FILE *f, struct cgraph_edge *e,
+ struct ipa_jump_func *jfunc)
{
fprintf (f, "ipa-prop: Discovered an indirect call to a known target (");
if (jfunc->type == IPA_JF_CONST_MEMBER_PTR)
else
print_node_brief(f, "", jfunc->value.constant, 0);
- fprintf (f, ") in %s: ", cgraph_node_name (node));
- print_gimple_stmt (f, nt->stmt, 2, TDF_SLIM);
+ fprintf (f, ") in %s: ", cgraph_node_name (e->caller));
+ print_gimple_stmt (f, e->call_stmt, 2, TDF_SLIM);
}
/* Update the param called notes associated with NODE when CS is being inlined,
unless NEW_EDGES is NULL. Return true iff a new edge(s) were created. */
static bool
-update_call_notes_after_inlining (struct cgraph_edge *cs,
- struct cgraph_node *node,
- VEC (cgraph_edge_p, heap) **new_edges)
+update_indirect_edges_after_inlining (struct cgraph_edge *cs,
+ struct cgraph_node *node,
+ VEC (cgraph_edge_p, heap) **new_edges)
{
- struct ipa_node_params *info = IPA_NODE_REF (node);
struct ipa_edge_args *top = IPA_EDGE_REF (cs);
- struct ipa_param_call_note *nt;
+ struct cgraph_edge *ie, *next_ie;
bool res = false;
- for (nt = info->param_calls; nt; nt = nt->next)
+ ipa_check_create_edge_args ();
+
+ for (ie = node->indirect_calls; ie; ie = next_ie)
{
+ struct cgraph_indirect_call_info *ici = ie->indirect_info;
struct ipa_jump_func *jfunc;
- if (nt->processed)
+ next_ie = ie->next_callee;
+ if (bitmap_bit_p (iinlining_processed_edges, ie->uid))
continue;
+ /* If we ever use indirect edges for anything other than indirect
+ inlining, we will need to skip those with negative param_indices. */
+ gcc_assert (ici->param_index >= 0);
+
/* We must check range due to calls with variable number of arguments: */
- if (nt->formal_id >= ipa_get_cs_argument_count (top))
+ if (ici->param_index >= ipa_get_cs_argument_count (top))
{
- nt->processed = true;
+ bitmap_set_bit (iinlining_processed_edges, ie->uid);
continue;
}
- jfunc = ipa_get_ith_jump_func (top, nt->formal_id);
+ jfunc = ipa_get_ith_jump_func (top, ici->param_index);
if (jfunc->type == IPA_JF_PASS_THROUGH
&& jfunc->value.pass_through.operation == NOP_EXPR)
- nt->formal_id = jfunc->value.pass_through.formal_id;
+ ici->param_index = jfunc->value.pass_through.formal_id;
else if (jfunc->type == IPA_JF_CONST
|| jfunc->type == IPA_JF_CONST_MEMBER_PTR)
{
struct cgraph_node *callee;
- struct cgraph_edge *new_indirect_edge;
tree decl;
- nt->processed = true;
+ bitmap_set_bit (iinlining_processed_edges, ie->uid);
if (jfunc->type == IPA_JF_CONST_MEMBER_PTR)
decl = jfunc->value.member_cst.pfn;
else
res = true;
if (dump_file)
- print_edge_addition_message (dump_file, nt, jfunc, node);
+ print_edge_addition_message (dump_file, ie, jfunc);
- new_indirect_edge = cgraph_create_edge (node, callee, nt->stmt,
- nt->count, nt->frequency,
- nt->loop_nest);
- new_indirect_edge->indirect_call = 1;
- ipa_check_create_edge_args ();
+ cgraph_make_edge_direct (ie, callee);
+ ie->indirect_inlining_edge = 1;
if (new_edges)
- VEC_safe_push (cgraph_edge_p, heap, *new_edges, new_indirect_edge);
+ VEC_safe_push (cgraph_edge_p, heap, *new_edges, ie);
top = IPA_EDGE_REF (cs);
}
else
{
- /* Ancestor jum functions and pass theoughs with operations should
+ /* Ancestor jump functions and pass theoughs with operations should
not be used on parameters that then get called. */
gcc_assert (jfunc->type == IPA_JF_UNKNOWN);
- nt->processed = true;
+ bitmap_set_bit (iinlining_processed_edges, ie->uid);
}
}
+
return res;
}
/* Recursively traverse subtree of NODE (including node) made of inlined
cgraph_edges when CS has been inlined and invoke
- update_call_notes_after_inlining on all nodes and
+ update_indirect_edges_after_inlining on all nodes and
update_jump_functions_after_inlining on all non-inlined edges that lead out
of this subtree. Newly discovered indirect edges will be added to
*NEW_EDGES, unless NEW_EDGES is NULL. Return true iff a new edge(s) were
struct cgraph_edge *e;
bool res;
- res = update_call_notes_after_inlining (cs, node, new_edges);
+ res = update_indirect_edges_after_inlining (cs, node, new_edges);
for (e = node->callees; e; e = e->next_callee)
if (!e->inline_failed)
ipa_propagate_indirect_call_infos (struct cgraph_edge *cs,
VEC (cgraph_edge_p, heap) **new_edges)
{
+ /* FIXME lto: We do not stream out indirect call information. */
+ if (flag_wpa)
+ return false;
+
/* Do nothing if the preparation phase has not been carried out yet
(i.e. during early inlining). */
if (!ipa_node_params_vector)
ipa_free_edge_args_substructures (struct ipa_edge_args *args)
{
if (args->jump_functions)
- free (args->jump_functions);
+ ggc_free (args->jump_functions);
memset (args, 0, sizeof (*args));
}
i++)
ipa_free_edge_args_substructures (args);
- VEC_free (ipa_edge_args_t, heap, ipa_edge_args_vector);
+ VEC_free (ipa_edge_args_t, gc, ipa_edge_args_vector);
ipa_edge_args_vector = NULL;
}
if (info->params)
free (info->params);
- while (info->param_calls)
- {
- struct ipa_param_call_note *note = info->param_calls;
- info->param_calls = note->next;
- free (note);
- }
-
memset (info, 0, sizeof (*info));
}
static void
ipa_node_removal_hook (struct cgraph_node *node, void *data ATTRIBUTE_UNUSED)
{
+ /* During IPA-CP updating we can be called on not-yet analyze clones. */
+ if (VEC_length (ipa_node_params_t, ipa_node_params_vector)
+ <= (unsigned)node->uid)
+ return;
ipa_free_node_params_substructures (IPA_NODE_REF (node));
}
if (!src)
return NULL;
- p = xcalloc (1, n);
+ p = xmalloc (n);
+ memcpy (p, src, n);
+ return p;
+}
+
+/* Like duplicate_array byt in GGC memory. */
+
+static void *
+duplicate_ggc_array (void *src, size_t n)
+{
+ void *p;
+
+ if (!src)
+ return NULL;
+
+ p = ggc_alloc (n);
memcpy (p, src, n);
return p;
}
arg_count = ipa_get_cs_argument_count (old_args);
ipa_set_cs_argument_count (new_args, arg_count);
new_args->jump_functions = (struct ipa_jump_func *)
- duplicate_array (old_args->jump_functions,
- sizeof (struct ipa_jump_func) * arg_count);
+ duplicate_ggc_array (old_args->jump_functions,
+ sizeof (struct ipa_jump_func) * arg_count);
+
+ if (iinlining_processed_edges
+ && bitmap_bit_p (iinlining_processed_edges, src->uid))
+ bitmap_set_bit (iinlining_processed_edges, dst->uid);
}
/* Hook that is called by cgraph.c when a node is duplicated. */
__attribute__((unused)) void *data)
{
struct ipa_node_params *old_info, *new_info;
- struct ipa_param_call_note *note;
int param_count;
ipa_check_create_node_params ();
sizeof (struct ipa_param_descriptor) * param_count);
new_info->ipcp_orig_node = old_info->ipcp_orig_node;
new_info->count_scale = old_info->count_scale;
-
- for (note = old_info->param_calls; note; note = note->next)
- {
- struct ipa_param_call_note *nn;
-
- nn = (struct ipa_param_call_note *)
- xcalloc (1, sizeof (struct ipa_param_call_note));
- memcpy (nn, note, sizeof (struct ipa_param_call_note));
- nn->next = new_info->param_calls;
- new_info->param_calls = nn;
- }
}
/* Register our cgraph hooks if they are not already there. */
node_duplication_hook_holder = NULL;
}
+/* Allocate all necessary data strucutures necessary for indirect inlining. */
+
+void
+ipa_create_all_structures_for_iinln (void)
+{
+ iinlining_processed_edges = BITMAP_ALLOC (NULL);
+}
+
/* Free all ipa_node_params and all ipa_edge_args structures if they are no
longer needed after ipa-cp. */
void
-free_all_ipa_structures_after_ipa_cp (void)
+ipa_free_all_structures_after_ipa_cp (void)
{
if (!flag_indirect_inlining)
{
longer needed after indirect inlining. */
void
-free_all_ipa_structures_after_iinln (void)
+ipa_free_all_structures_after_iinln (void)
{
+ BITMAP_FREE (iinlining_processed_edges);
+
ipa_free_all_edge_args ();
ipa_free_all_node_params ();
ipa_unregister_cgraph_hooks ();
temp = ipa_get_param (info, i);
if (TREE_CODE (temp) == PARM_DECL)
fprintf (f, " param %d : %s", i,
- (*lang_hooks.decl_printable_name) (temp, 2));
+ (DECL_NAME (temp)
+ ? (*lang_hooks.decl_printable_name) (temp, 2)
+ : "(unnamed)"));
if (ipa_is_param_modified (info, i))
fprintf (f, " modified");
- if (ipa_is_param_called (info, i))
- fprintf (f, " called");
fprintf (f, "\n");
}
}
if (!useless_type_conversion_p (ptrtype, TREE_TYPE (expr)))
expr = fold_convert (ptrtype, expr);
expr = fold_build2 (POINTER_PLUS_EXPR, ptrtype, expr,
- build_int_cst (size_type_node,
+ build_int_cst (sizetype,
adj->offset / BITS_PER_UNIT));
if (!adj->by_ref)
expr = fold_build1 (INDIRECT_REF, adj->type, expr);
VEC_free (tree, heap, parms);
}
+/* Stream out jump function JUMP_FUNC to OB. */
+
+static void
+ipa_write_jump_function (struct output_block *ob,
+ struct ipa_jump_func *jump_func)
+{
+ lto_output_uleb128_stream (ob->main_stream,
+ jump_func->type);
+
+ switch (jump_func->type)
+ {
+ case IPA_JF_UNKNOWN:
+ break;
+ case IPA_JF_CONST:
+ lto_output_tree (ob, jump_func->value.constant, true);
+ break;
+ case IPA_JF_PASS_THROUGH:
+ lto_output_tree (ob, jump_func->value.pass_through.operand, true);
+ lto_output_uleb128_stream (ob->main_stream,
+ jump_func->value.pass_through.formal_id);
+ lto_output_uleb128_stream (ob->main_stream,
+ jump_func->value.pass_through.operation);
+ break;
+ case IPA_JF_ANCESTOR:
+ lto_output_uleb128_stream (ob->main_stream,
+ jump_func->value.ancestor.offset);
+ lto_output_tree (ob, jump_func->value.ancestor.type, true);
+ lto_output_uleb128_stream (ob->main_stream,
+ jump_func->value.ancestor.formal_id);
+ break;
+ case IPA_JF_CONST_MEMBER_PTR:
+ lto_output_tree (ob, jump_func->value.member_cst.pfn, true);
+ lto_output_tree (ob, jump_func->value.member_cst.delta, false);
+ break;
+ }
+}
+
+/* Read in jump function JUMP_FUNC from IB. */
+
+static void
+ipa_read_jump_function (struct lto_input_block *ib,
+ struct ipa_jump_func *jump_func,
+ struct data_in *data_in)
+{
+ jump_func->type = (enum jump_func_type) lto_input_uleb128 (ib);
+
+ switch (jump_func->type)
+ {
+ case IPA_JF_UNKNOWN:
+ break;
+ case IPA_JF_CONST:
+ jump_func->value.constant = lto_input_tree (ib, data_in);
+ break;
+ case IPA_JF_PASS_THROUGH:
+ jump_func->value.pass_through.operand = lto_input_tree (ib, data_in);
+ jump_func->value.pass_through.formal_id = lto_input_uleb128 (ib);
+ jump_func->value.pass_through.operation = (enum tree_code) lto_input_uleb128 (ib);
+ break;
+ case IPA_JF_ANCESTOR:
+ jump_func->value.ancestor.offset = lto_input_uleb128 (ib);
+ jump_func->value.ancestor.type = lto_input_tree (ib, data_in);
+ jump_func->value.ancestor.formal_id = lto_input_uleb128 (ib);
+ break;
+ case IPA_JF_CONST_MEMBER_PTR:
+ jump_func->value.member_cst.pfn = lto_input_tree (ib, data_in);
+ jump_func->value.member_cst.delta = lto_input_tree (ib, data_in);
+ break;
+ }
+}
+
+/* Stream out parts of cgraph_indirect_call_info corresponding to CS that are
+ relevant to indirect inlining to OB. */
+
+static void
+ipa_write_indirect_edge_info (struct output_block *ob,
+ struct cgraph_edge *cs)
+{
+ struct cgraph_indirect_call_info *ii = cs->indirect_info;
+
+ lto_output_sleb128_stream (ob->main_stream, ii->param_index);
+}
+
+/* Read in parts of cgraph_indirect_call_info corresponding to CS that are
+ relevant to indirect inlining from IB. */
+
+static void
+ipa_read_indirect_edge_info (struct lto_input_block *ib,
+ struct data_in *data_in ATTRIBUTE_UNUSED,
+ struct cgraph_edge *cs)
+{
+ struct cgraph_indirect_call_info *ii = cs->indirect_info;
+
+ ii->param_index = (int) lto_input_sleb128 (ib);
+}
+
+/* Stream out NODE info to OB. */
+
+static void
+ipa_write_node_info (struct output_block *ob, struct cgraph_node *node)
+{
+ int node_ref;
+ lto_cgraph_encoder_t encoder;
+ struct ipa_node_params *info = IPA_NODE_REF (node);
+ int j;
+ struct cgraph_edge *e;
+ struct bitpack_d *bp;
+
+ encoder = ob->decl_state->cgraph_node_encoder;
+ node_ref = lto_cgraph_encoder_encode (encoder, node);
+ lto_output_uleb128_stream (ob->main_stream, node_ref);
+
+ bp = bitpack_create ();
+ bp_pack_value (bp, info->called_with_var_arguments, 1);
+ bp_pack_value (bp, info->uses_analysis_done, 1);
+ gcc_assert (info->modification_analysis_done
+ || ipa_get_param_count (info) == 0);
+ gcc_assert (!info->node_enqueued);
+ gcc_assert (!info->ipcp_orig_node);
+ for (j = 0; j < ipa_get_param_count (info); j++)
+ bp_pack_value (bp, info->params[j].modified, 1);
+ lto_output_bitpack (ob->main_stream, bp);
+ bitpack_delete (bp);
+ for (e = node->callees; e; e = e->next_callee)
+ {
+ struct ipa_edge_args *args = IPA_EDGE_REF (e);
+
+ lto_output_uleb128_stream (ob->main_stream,
+ ipa_get_cs_argument_count (args));
+ for (j = 0; j < ipa_get_cs_argument_count (args); j++)
+ ipa_write_jump_function (ob, ipa_get_ith_jump_func (args, j));
+ }
+ for (e = node->indirect_calls; e; e = e->next_callee)
+ ipa_write_indirect_edge_info (ob, e);
+}
+
+/* Srtream in NODE info from IB. */
+
+static void
+ipa_read_node_info (struct lto_input_block *ib, struct cgraph_node *node,
+ struct data_in *data_in)
+{
+ struct ipa_node_params *info = IPA_NODE_REF (node);
+ int k;
+ struct cgraph_edge *e;
+ struct bitpack_d *bp;
+
+ ipa_initialize_node_params (node);
+
+ bp = lto_input_bitpack (ib);
+ info->called_with_var_arguments = bp_unpack_value (bp, 1);
+ info->uses_analysis_done = bp_unpack_value (bp, 1);
+ if (ipa_get_param_count (info) != 0)
+ {
+ info->modification_analysis_done = true;
+ info->uses_analysis_done = true;
+ }
+ info->node_enqueued = false;
+ for (k = 0; k < ipa_get_param_count (info); k++)
+ info->params[k].modified = bp_unpack_value (bp, 1);
+ bitpack_delete (bp);
+ for (e = node->callees; e; e = e->next_callee)
+ {
+ struct ipa_edge_args *args = IPA_EDGE_REF (e);
+ int count = lto_input_uleb128 (ib);
+
+ ipa_set_cs_argument_count (args, count);
+ if (!count)
+ continue;
+
+ args->jump_functions = GGC_CNEWVEC (struct ipa_jump_func,
+ ipa_get_cs_argument_count (args));
+ for (k = 0; k < ipa_get_cs_argument_count (args); k++)
+ ipa_read_jump_function (ib, ipa_get_ith_jump_func (args, k), data_in);
+ }
+ for (e = node->indirect_calls; e; e = e->next_callee)
+ ipa_read_indirect_edge_info (ib, data_in, e);
+}
+
+/* Write jump functions for nodes in SET. */
+
+void
+ipa_prop_write_jump_functions (cgraph_node_set set)
+{
+ struct cgraph_node *node;
+ struct output_block *ob = create_output_block (LTO_section_jump_functions);
+ unsigned int count = 0;
+ cgraph_node_set_iterator csi;
+
+ ob->cgraph_node = NULL;
+
+ for (csi = csi_start (set); !csi_end_p (csi); csi_next (&csi))
+ {
+ node = csi_node (csi);
+ if (node->analyzed && IPA_NODE_REF (node) != NULL)
+ count++;
+ }
+
+ lto_output_uleb128_stream (ob->main_stream, count);
+
+ /* Process all of the functions. */
+ for (csi = csi_start (set); !csi_end_p (csi); csi_next (&csi))
+ {
+ node = csi_node (csi);
+ if (node->analyzed && IPA_NODE_REF (node) != NULL)
+ ipa_write_node_info (ob, node);
+ }
+ lto_output_1_stream (ob->main_stream, 0);
+ produce_asm (ob, NULL);
+ destroy_output_block (ob);
+}
+
+/* Read section in file FILE_DATA of length LEN with data DATA. */
+
+static void
+ipa_prop_read_section (struct lto_file_decl_data *file_data, const char *data,
+ size_t len)
+{
+ const struct lto_function_header *header =
+ (const struct lto_function_header *) data;
+ const int32_t cfg_offset = sizeof (struct lto_function_header);
+ const int32_t main_offset = cfg_offset + header->cfg_size;
+ const int32_t string_offset = main_offset + header->main_size;
+ struct data_in *data_in;
+ struct lto_input_block ib_main;
+ unsigned int i;
+ unsigned int count;
+
+ LTO_INIT_INPUT_BLOCK (ib_main, (const char *) data + main_offset, 0,
+ header->main_size);
+
+ data_in =
+ lto_data_in_create (file_data, (const char *) data + string_offset,
+ header->string_size, NULL);
+ count = lto_input_uleb128 (&ib_main);
+
+ for (i = 0; i < count; i++)
+ {
+ unsigned int index;
+ struct cgraph_node *node;
+ lto_cgraph_encoder_t encoder;
+
+ index = lto_input_uleb128 (&ib_main);
+ encoder = file_data->cgraph_node_encoder;
+ node = lto_cgraph_encoder_deref (encoder, index);
+ ipa_read_node_info (&ib_main, node, data_in);
+ }
+ lto_free_section_data (file_data, LTO_section_jump_functions, NULL, data,
+ len);
+ lto_data_in_delete (data_in);
+}
+
+/* Read ipcp jump functions. */
+
+void
+ipa_prop_read_jump_functions (void)
+{
+ struct lto_file_decl_data **file_data_vec = lto_get_file_decl_data ();
+ struct lto_file_decl_data *file_data;
+ unsigned int j = 0;
+
+ ipa_check_create_node_params ();
+ ipa_check_create_edge_args ();
+ ipa_register_cgraph_hooks ();
+
+ while ((file_data = file_data_vec[j++]))
+ {
+ size_t len;
+ const char *data = lto_get_section_data (file_data, LTO_section_jump_functions, NULL, &len);
+
+ if (data)
+ ipa_prop_read_section (file_data, data, len);
+ }
+}
+
+/* After merging units, we can get mismatch in argument counts.
+ Also decl merging might've rendered parameter lists obsolette.
+ Also compute called_with_variable_arg info. */
+
+void
+ipa_update_after_lto_read (void)
+{
+ struct cgraph_node *node;
+ struct cgraph_edge *cs;
+
+ ipa_check_create_node_params ();
+ ipa_check_create_edge_args ();
+
+ for (node = cgraph_nodes; node; node = node->next)
+ if (node->analyzed)
+ ipa_initialize_node_params (node);
+
+ for (node = cgraph_nodes; node; node = node->next)
+ if (node->analyzed)
+ for (cs = node->callees; cs; cs = cs->next_callee)
+ {
+ if (ipa_get_cs_argument_count (IPA_EDGE_REF (cs))
+ != ipa_get_param_count (IPA_NODE_REF (cs->callee)))
+ ipa_set_called_with_variable_arg (IPA_NODE_REF (cs->callee));
+ }
+}