#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;
/* Holders of ipa cgraph hooks: */
static struct cgraph_edge_hook_list *edge_removal_hook_holder;
static struct cgraph_2edge_hook_list *edge_duplication_hook_holder;
static struct cgraph_2node_hook_list *node_duplication_hook_holder;
+/* Add cgraph NODE described by INFO to the worklist WL regardless of whether
+ it is in one or not. It should almost never be used directly, as opposed to
+ ipa_push_func_to_list. */
+
+void
+ipa_push_func_to_list_1 (struct ipa_func_list **wl,
+ struct cgraph_node *node,
+ struct ipa_node_params *info)
+{
+ struct ipa_func_list *temp;
+
+ info->node_enqueued = 1;
+ temp = XCNEW (struct ipa_func_list);
+ temp->node = node;
+ temp->next = *wl;
+ *wl = temp;
+}
+
/* Initialize worklist to contain all functions. */
struct ipa_func_list *
for (node = cgraph_nodes; node; node = node->next)
if (node->analyzed)
{
+ struct ipa_node_params *info = IPA_NODE_REF (node);
/* Unreachable nodes should have been eliminated before ipcp and
inlining. */
gcc_assert (node->needed || node->reachable);
- ipa_push_func_to_list (&wl, node);
+ ipa_push_func_to_list_1 (&wl, node, info);
}
return wl;
}
-/* Add cgraph node MT to the worklist. Set worklist element WL
- to point to MT. */
-
-void
-ipa_push_func_to_list (struct ipa_func_list **wl, struct cgraph_node *mt)
-{
- struct ipa_func_list *temp;
-
- temp = XCNEW (struct ipa_func_list);
- temp->node = mt;
- temp->next = *wl;
- *wl = temp;
-}
-
-/* Remove a function from the worklist. WL points to the first
- element in the list, which is removed. */
+/* Remove a function from the worklist WL and return it. */
struct cgraph_node *
-ipa_pop_func_from_list (struct ipa_func_list ** wl)
+ipa_pop_func_from_list (struct ipa_func_list **wl)
{
+ struct ipa_node_params *info;
struct ipa_func_list *first;
- struct cgraph_node *return_func;
+ struct cgraph_node *node;
first = *wl;
*wl = (*wl)->next;
- return_func = first->node;
+ node = first->node;
free (first);
- return return_func;
+
+ info = IPA_NODE_REF (node);
+ info->node_enqueued = 0;
+ return node;
}
/* Return index of the formal whose tree is PTREE in function which corresponds
}
}
+/* Return how many formal parameters FNDECL has. */
+
+static inline int
+count_formal_params_1 (tree fndecl)
+{
+ tree parm;
+ int count = 0;
+
+ for (parm = DECL_ARGUMENTS (fndecl); parm; parm = TREE_CHAIN (parm))
+ count++;
+
+ return count;
+}
+
/* Count number of formal parameters in NOTE. Store the result to the
appropriate field of INFO. */
ipa_count_formal_params (struct cgraph_node *node,
struct ipa_node_params *info)
{
- tree fndecl;
- tree fnargs;
- tree parm;
int param_num;
- fndecl = node->decl;
- fnargs = DECL_ARGUMENTS (fndecl);
- param_num = 0;
- for (parm = fnargs; parm; parm = TREE_CHAIN (parm))
- param_num++;
+ param_num = count_formal_params_1 (node->decl);
ipa_set_param_count (info, param_num);
}
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);
}
else if (type == IPA_JF_PASS_THROUGH)
{
fprintf (f, "PASS THROUGH: ");
- fprintf (f, "%d\n", jump_func->value.formal_id);
+ fprintf (f, "%d, op %s ",
+ jump_func->value.pass_through.formal_id,
+ tree_code_name[(int)
+ jump_func->value.pass_through.operation]);
+ if (jump_func->value.pass_through.operation != NOP_EXPR)
+ print_generic_expr (dump_file,
+ jump_func->value.pass_through.operand, 0);
+ fprintf (dump_file, "\n");
}
+ else if (type == IPA_JF_ANCESTOR)
+ {
+ fprintf (f, "ANCESTOR: ");
+ fprintf (f, "%d, offset "HOST_WIDE_INT_PRINT_DEC"\n",
+ jump_func->value.ancestor.formal_id,
+ jump_func->value.ancestor.offset);
+ }
}
}
}
}
}
+/* Determine whether passing ssa name NAME constitutes a polynomial
+ pass-through function or getting an address of an acestor and if so, write
+ such a jump function to JFUNC. INFO describes the caller. */
+
+static void
+compute_complex_pass_through (struct ipa_node_params *info,
+ struct ipa_jump_func *jfunc,
+ tree name)
+{
+ HOST_WIDE_INT offset, size, max_size;
+ tree op1, op2, type;
+ int index;
+ gimple stmt = SSA_NAME_DEF_STMT (name);
+
+ if (!is_gimple_assign (stmt))
+ return;
+ op1 = gimple_assign_rhs1 (stmt);
+ op2 = gimple_assign_rhs2 (stmt);
+
+ if (op2)
+ {
+ 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;
+
+ index = ipa_get_param_decl_index (info, SSA_NAME_VAR (op1));
+ if (index >= 0)
+ {
+ jfunc->type = IPA_JF_PASS_THROUGH;
+ jfunc->value.pass_through.formal_id = index;
+ jfunc->value.pass_through.operation = gimple_assign_rhs_code (stmt);
+ jfunc->value.pass_through.operand = op2;
+ }
+ return;
+ }
+
+ if (TREE_CODE (op1) != ADDR_EXPR)
+ return;
+ op1 = TREE_OPERAND (op1, 0);
+ type = TREE_TYPE (op1);
+
+ op1 = get_ref_base_and_extent (op1, &offset, &size, &max_size);
+ 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
+ || !SSA_NAME_IS_DEFAULT_DEF (op1))
+ return;
+
+ index = ipa_get_param_decl_index (info, SSA_NAME_VAR (op1));
+ if (index >= 0)
+ {
+ jfunc->type = IPA_JF_ANCESTOR;
+ jfunc->value.ancestor.formal_id = index;
+ jfunc->value.ancestor.offset = offset;
+ jfunc->value.ancestor.type = type;
+ }
+}
+
+
/* Determine the jump functions of scalar arguments. Scalar means SSA names
and constants of a number of selected types. INFO is the ipa_node_params
structure associated with the caller, FUNCTIONS is a pointer to an array of
functions[num].type = IPA_JF_CONST;
functions[num].value.constant = arg;
}
- else if ((TREE_CODE (arg) == SSA_NAME) && SSA_NAME_IS_DEFAULT_DEF (arg))
+ else if (TREE_CODE (arg) == SSA_NAME)
{
- int index = ipa_get_param_decl_index (info, SSA_NAME_VAR (arg));
-
- if (index >= 0)
+ if (SSA_NAME_IS_DEFAULT_DEF (arg))
{
- functions[num].type = IPA_JF_PASS_THROUGH;
- functions[num].value.formal_id = index;
+ int index = ipa_get_param_decl_index (info, SSA_NAME_VAR (arg));
+
+ if (index >= 0)
+ {
+ functions[num].type = IPA_JF_PASS_THROUGH;
+ functions[num].value.pass_through.formal_id = index;
+ functions[num].value.pass_through.operation = NOP_EXPR;
+ }
}
+ else
+ compute_complex_pass_through (info, &functions[num], arg);
}
}
}
if (!ipa_is_param_modified (info, index))
{
functions[num].type = IPA_JF_PASS_THROUGH;
- functions[num].value.formal_id = index;
+ functions[num].value.pass_through.formal_id = index;
+ functions[num].value.pass_through.operation = NOP_EXPR;
}
else
undecided_members = true;
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));
compute_cst_member_ptr_arguments (arguments->jump_functions, call);
}
-/* If RHS looks like a rhs of a statement loading pfn from a member pointer
- formal parameter, return the parameter, otherwise return NULL. */
+/* If RHS looks like a rhs of a statement loading pfn from a member
+ pointer formal parameter, return the parameter, otherwise return
+ NULL. If USE_DELTA, then we look for a use of the delta field
+ rather than the pfn. */
static tree
-ipa_get_member_ptr_load_param (tree rhs)
+ipa_get_member_ptr_load_param (tree rhs, bool use_delta)
{
tree rec, fld;
tree ptr_field;
+ tree delta_field;
if (TREE_CODE (rhs) != COMPONENT_REF)
return NULL_TREE;
rec = TREE_OPERAND (rhs, 0);
if (TREE_CODE (rec) != PARM_DECL
- || !type_like_member_ptr_p (TREE_TYPE (rec), &ptr_field, NULL))
+ || !type_like_member_ptr_p (TREE_TYPE (rec), &ptr_field, &delta_field))
return NULL_TREE;
fld = TREE_OPERAND (rhs, 1);
- if (fld == ptr_field)
+ if (use_delta ? (fld == delta_field) : (fld == ptr_field))
return rec;
else
return NULL_TREE;
parameter, this function returns that parameter. */
static tree
-ipa_get_stmt_member_ptr_load_param (gimple stmt)
+ipa_get_stmt_member_ptr_load_param (gimple stmt, bool use_delta)
{
tree rhs;
return NULL_TREE;
rhs = gimple_assign_rhs1 (stmt);
- return ipa_get_member_ptr_load_param (rhs);
+ return ipa_get_member_ptr_load_param (rhs, use_delta);
}
/* Returns true iff T is an SSA_NAME defined by a statement. */
note = XCNEW (struct ipa_param_call_note);
note->formal_id = formal_id;
note->stmt = stmt;
+ note->lto_stmt_uid = gimple_uid (stmt);
note->count = bb->count;
note->frequency = compute_call_stmt_bb_frequency (current_function_decl, bb);
+ note->loop_nest = bb->loop_depth;
note->next = info->param_calls;
info->param_calls = note;
d1 = SSA_NAME_DEF_STMT (n1);
d2 = SSA_NAME_DEF_STMT (n2);
- if ((rec = ipa_get_stmt_member_ptr_load_param (d1)))
+ if ((rec = ipa_get_stmt_member_ptr_load_param (d1, false)))
{
- if (ipa_get_stmt_member_ptr_load_param (d2))
+ if (ipa_get_stmt_member_ptr_load_param (d2, false))
return;
bb = gimple_bb (d1);
virt_bb = gimple_bb (d2);
}
- else if ((rec = ipa_get_stmt_member_ptr_load_param (d2)))
+ else if ((rec = ipa_get_stmt_member_ptr_load_param (d2, false)))
{
bb = gimple_bb (d2);
virt_bb = gimple_bb (d1);
def = SSA_NAME_DEF_STMT (cond);
}
- rec2 = ipa_get_stmt_member_ptr_load_param (def);
+ rec2 = ipa_get_stmt_member_ptr_load_param (def,
+ (TARGET_PTRMEMFUNC_VBIT_LOCATION
+ == ptrmemfunc_vbit_in_delta));
+
if (rec != rec2)
return;
/* Update the jump functions associated with call graph edge E when the call
graph edge CS is being inlined, assuming that E->caller is already (possibly
- indirectly) inlined into CS->callee and that E has not been inlined. */
+ indirectly) inlined into CS->callee and that E has not been inlined.
+
+ We keep pass through functions only if they do not contain any operation.
+ This is sufficient for inlining and greately simplifies things. */
static void
update_jump_functions_after_inlining (struct cgraph_edge *cs,
{
struct ipa_jump_func *src, *dst = ipa_get_ith_jump_func (args, i);
+ if (dst->type == IPA_JF_ANCESTOR)
+ {
+ dst->type = IPA_JF_UNKNOWN;
+ continue;
+ }
+
if (dst->type != IPA_JF_PASS_THROUGH)
continue;
- /* We must check range due to calls with variable number of arguments: */
- if (dst->value.formal_id >= (unsigned) ipa_get_cs_argument_count (top))
+ /* We must check range due to calls with variable number of arguments and
+ we cannot combine jump functions with operations. */
+ if (dst->value.pass_through.operation != NOP_EXPR
+ || (dst->value.pass_through.formal_id
+ >= ipa_get_cs_argument_count (top)))
{
dst->type = IPA_JF_UNKNOWN;
continue;
}
- src = ipa_get_ith_jump_func (top, dst->value.formal_id);
+ src = ipa_get_ith_jump_func (top, dst->value.pass_through.formal_id);
*dst = *src;
}
}
continue;
/* We must check range due to calls with variable number of arguments: */
- if (nt->formal_id >= (unsigned) ipa_get_cs_argument_count (top))
+ if (nt->formal_id >= ipa_get_cs_argument_count (top))
{
nt->processed = true;
continue;
}
jfunc = ipa_get_ith_jump_func (top, nt->formal_id);
- if (jfunc->type == IPA_JF_PASS_THROUGH)
- nt->formal_id = jfunc->value.formal_id;
+ if (jfunc->type == IPA_JF_PASS_THROUGH
+ && jfunc->value.pass_through.operation == NOP_EXPR)
+ nt->formal_id = jfunc->value.pass_through.formal_id;
else if (jfunc->type == IPA_JF_CONST
|| jfunc->type == IPA_JF_CONST_MEMBER_PTR)
{
new_indirect_edge = cgraph_create_edge (node, callee, nt->stmt,
nt->count, nt->frequency,
nt->loop_nest);
+ new_indirect_edge->lto_stmt_uid = nt->lto_stmt_uid;
new_indirect_edge->indirect_call = 1;
ipa_check_create_edge_args ();
if (new_edges)
VEC_safe_push (cgraph_edge_p, heap, *new_edges, new_indirect_edge);
top = IPA_EDGE_REF (cs);
}
+ else
+ {
+ /* Ancestor jum 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;
+ }
}
return res;
}
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 (!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);
}
/* Hook that is called by cgraph.c when a node is duplicated. */
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))
for (node = cgraph_nodes; node; node = node->next)
ipa_print_node_params (f, node);
}
+
+/* Return a heap allocated vector containing formal parameters of FNDECL. */
+
+VEC(tree, heap) *
+ipa_get_vector_of_formal_parms (tree fndecl)
+{
+ VEC(tree, heap) *args;
+ int count;
+ tree parm;
+
+ count = count_formal_params_1 (fndecl);
+ args = VEC_alloc (tree, heap, count);
+ for (parm = DECL_ARGUMENTS (fndecl); parm; parm = TREE_CHAIN (parm))
+ VEC_quick_push (tree, args, parm);
+
+ return args;
+}
+
+/* Return a heap allocated vector containing types of formal parameters of
+ function type FNTYPE. */
+
+static inline VEC(tree, heap) *
+get_vector_of_formal_parm_types (tree fntype)
+{
+ VEC(tree, heap) *types;
+ int count = 0;
+ tree t;
+
+ for (t = TYPE_ARG_TYPES (fntype); t; t = TREE_CHAIN (t))
+ count++;
+
+ types = VEC_alloc (tree, heap, count);
+ for (t = TYPE_ARG_TYPES (fntype); t; t = TREE_CHAIN (t))
+ VEC_quick_push (tree, types, TREE_VALUE (t));
+
+ return types;
+}
+
+/* Modify the function declaration FNDECL and its type according to the plan in
+ ADJUSTMENTS. It also sets base fields of individual adjustments structures
+ to reflect the actual parameters being modified which are determined by the
+ base_index field. */
+
+void
+ipa_modify_formal_parameters (tree fndecl, ipa_parm_adjustment_vec adjustments,
+ const char *synth_parm_prefix)
+{
+ VEC(tree, heap) *oparms, *otypes;
+ tree orig_type, new_type = NULL;
+ tree old_arg_types, t, new_arg_types = NULL;
+ tree parm, *link = &DECL_ARGUMENTS (fndecl);
+ int i, len = VEC_length (ipa_parm_adjustment_t, adjustments);
+ tree new_reversed = NULL;
+ bool care_for_types, last_parm_void;
+
+ if (!synth_parm_prefix)
+ synth_parm_prefix = "SYNTH";
+
+ oparms = ipa_get_vector_of_formal_parms (fndecl);
+ orig_type = TREE_TYPE (fndecl);
+ old_arg_types = TYPE_ARG_TYPES (orig_type);
+
+ /* The following test is an ugly hack, some functions simply don't have any
+ arguments in their type. This is probably a bug but well... */
+ care_for_types = (old_arg_types != NULL_TREE);
+ if (care_for_types)
+ {
+ last_parm_void = (TREE_VALUE (tree_last (old_arg_types))
+ == void_type_node);
+ otypes = get_vector_of_formal_parm_types (orig_type);
+ if (last_parm_void)
+ gcc_assert (VEC_length (tree, oparms) + 1 == VEC_length (tree, otypes));
+ else
+ gcc_assert (VEC_length (tree, oparms) == VEC_length (tree, otypes));
+ }
+ else
+ {
+ last_parm_void = false;
+ otypes = NULL;
+ }
+
+ for (i = 0; i < len; i++)
+ {
+ struct ipa_parm_adjustment *adj;
+ gcc_assert (link);
+
+ adj = VEC_index (ipa_parm_adjustment_t, adjustments, i);
+ parm = VEC_index (tree, oparms, adj->base_index);
+ adj->base = parm;
+
+ if (adj->copy_param)
+ {
+ if (care_for_types)
+ new_arg_types = tree_cons (NULL_TREE, VEC_index (tree, otypes,
+ adj->base_index),
+ new_arg_types);
+ *link = parm;
+ link = &TREE_CHAIN (parm);
+ }
+ else if (!adj->remove_param)
+ {
+ tree new_parm;
+ tree ptype;
+
+ if (adj->by_ref)
+ ptype = build_pointer_type (adj->type);
+ else
+ ptype = adj->type;
+
+ if (care_for_types)
+ new_arg_types = tree_cons (NULL_TREE, ptype, new_arg_types);
+
+ new_parm = build_decl (UNKNOWN_LOCATION, PARM_DECL, NULL_TREE,
+ ptype);
+ DECL_NAME (new_parm) = create_tmp_var_name (synth_parm_prefix);
+
+ DECL_ARTIFICIAL (new_parm) = 1;
+ DECL_ARG_TYPE (new_parm) = ptype;
+ DECL_CONTEXT (new_parm) = fndecl;
+ TREE_USED (new_parm) = 1;
+ DECL_IGNORED_P (new_parm) = 1;
+ layout_decl (new_parm, 0);
+
+ add_referenced_var (new_parm);
+ mark_sym_for_renaming (new_parm);
+ adj->base = parm;
+ adj->reduction = new_parm;
+
+ *link = new_parm;
+
+ link = &TREE_CHAIN (new_parm);
+ }
+ }
+
+ *link = NULL_TREE;
+
+ if (care_for_types)
+ {
+ new_reversed = nreverse (new_arg_types);
+ if (last_parm_void)
+ {
+ if (new_reversed)
+ TREE_CHAIN (new_arg_types) = void_list_node;
+ else
+ new_reversed = void_list_node;
+ }
+ }
+
+ /* Use copy_node to preserve as much as possible from original type
+ (debug info, attribute lists etc.)
+ Exception is METHOD_TYPEs must have THIS argument.
+ When we are asked to remove it, we need to build new FUNCTION_TYPE
+ instead. */
+ if (TREE_CODE (orig_type) != METHOD_TYPE
+ || (VEC_index (ipa_parm_adjustment_t, adjustments, 0)->copy_param
+ && VEC_index (ipa_parm_adjustment_t, adjustments, 0)->base_index == 0))
+ {
+ new_type = copy_node (orig_type);
+ TYPE_ARG_TYPES (new_type) = new_reversed;
+ }
+ else
+ {
+ new_type
+ = build_distinct_type_copy (build_function_type (TREE_TYPE (orig_type),
+ new_reversed));
+ TYPE_CONTEXT (new_type) = TYPE_CONTEXT (orig_type);
+ DECL_VINDEX (fndecl) = NULL_TREE;
+ }
+
+ /* This is a new type, not a copy of an old type. Need to reassociate
+ variants. We can handle everything except the main variant lazily. */
+ t = TYPE_MAIN_VARIANT (orig_type);
+ if (orig_type != t)
+ {
+ TYPE_MAIN_VARIANT (new_type) = t;
+ TYPE_NEXT_VARIANT (new_type) = TYPE_NEXT_VARIANT (t);
+ TYPE_NEXT_VARIANT (t) = new_type;
+ }
+ else
+ {
+ TYPE_MAIN_VARIANT (new_type) = new_type;
+ TYPE_NEXT_VARIANT (new_type) = NULL;
+ }
+
+ TREE_TYPE (fndecl) = new_type;
+ if (otypes)
+ VEC_free (tree, heap, otypes);
+ VEC_free (tree, heap, oparms);
+}
+
+/* Modify actual arguments of a function call CS as indicated in ADJUSTMENTS.
+ If this is a directly recursive call, CS must be NULL. Otherwise it must
+ contain the corresponding call graph edge. */
+
+void
+ipa_modify_call_arguments (struct cgraph_edge *cs, gimple stmt,
+ ipa_parm_adjustment_vec adjustments)
+{
+ VEC(tree, heap) *vargs;
+ gimple new_stmt;
+ gimple_stmt_iterator gsi;
+ tree callee_decl;
+ int i, len;
+
+ len = VEC_length (ipa_parm_adjustment_t, adjustments);
+ vargs = VEC_alloc (tree, heap, len);
+
+ gsi = gsi_for_stmt (stmt);
+ for (i = 0; i < len; i++)
+ {
+ struct ipa_parm_adjustment *adj;
+
+ adj = VEC_index (ipa_parm_adjustment_t, adjustments, i);
+
+ if (adj->copy_param)
+ {
+ tree arg = gimple_call_arg (stmt, adj->base_index);
+
+ VEC_quick_push (tree, vargs, arg);
+ }
+ else if (!adj->remove_param)
+ {
+ tree expr, orig_expr;
+ bool allow_ptr, repl_found;
+
+ orig_expr = expr = gimple_call_arg (stmt, adj->base_index);
+ if (TREE_CODE (expr) == ADDR_EXPR)
+ {
+ allow_ptr = false;
+ expr = TREE_OPERAND (expr, 0);
+ }
+ else
+ allow_ptr = true;
+
+ repl_found = build_ref_for_offset (&expr, TREE_TYPE (expr),
+ adj->offset, adj->type,
+ allow_ptr);
+ if (repl_found)
+ {
+ if (adj->by_ref)
+ expr = build_fold_addr_expr (expr);
+ }
+ else
+ {
+ tree ptrtype = build_pointer_type (adj->type);
+ expr = orig_expr;
+ if (!POINTER_TYPE_P (TREE_TYPE (expr)))
+ expr = build_fold_addr_expr (expr);
+ 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,
+ adj->offset / BITS_PER_UNIT));
+ if (!adj->by_ref)
+ expr = fold_build1 (INDIRECT_REF, adj->type, expr);
+ }
+ expr = force_gimple_operand_gsi (&gsi, expr,
+ adj->by_ref
+ || is_gimple_reg_type (adj->type),
+ NULL, true, GSI_SAME_STMT);
+ VEC_quick_push (tree, vargs, expr);
+ }
+ }
+
+ if (dump_file && (dump_flags & TDF_DETAILS))
+ {
+ fprintf (dump_file, "replacing stmt:");
+ print_gimple_stmt (dump_file, gsi_stmt (gsi), 0, 0);
+ }
+
+ callee_decl = !cs ? gimple_call_fndecl (stmt) : cs->callee->decl;
+ new_stmt = gimple_build_call_vec (callee_decl, vargs);
+ VEC_free (tree, heap, vargs);
+ if (gimple_call_lhs (stmt))
+ gimple_call_set_lhs (new_stmt, gimple_call_lhs (stmt));
+
+ gimple_set_block (new_stmt, gimple_block (stmt));
+ if (gimple_has_location (stmt))
+ gimple_set_location (new_stmt, gimple_location (stmt));
+ gimple_call_copy_flags (new_stmt, stmt);
+ gimple_call_set_chain (new_stmt, gimple_call_chain (stmt));
+
+ if (dump_file && (dump_flags & TDF_DETAILS))
+ {
+ fprintf (dump_file, "with stmt:");
+ print_gimple_stmt (dump_file, new_stmt, 0, 0);
+ fprintf (dump_file, "\n");
+ }
+ gsi_replace (&gsi, new_stmt, true);
+ if (cs)
+ cgraph_set_call_stmt (cs, new_stmt);
+ update_ssa (TODO_update_ssa);
+ free_dominance_info (CDI_DOMINATORS);
+}
+
+/* Return true iff BASE_INDEX is in ADJUSTMENTS more than once. */
+
+static bool
+index_in_adjustments_multiple_times_p (int base_index,
+ ipa_parm_adjustment_vec adjustments)
+{
+ int i, len = VEC_length (ipa_parm_adjustment_t, adjustments);
+ bool one = false;
+
+ for (i = 0; i < len; i++)
+ {
+ struct ipa_parm_adjustment *adj;
+ adj = VEC_index (ipa_parm_adjustment_t, adjustments, i);
+
+ if (adj->base_index == base_index)
+ {
+ if (one)
+ return true;
+ else
+ one = true;
+ }
+ }
+ return false;
+}
+
+
+/* Return adjustments that should have the same effect on function parameters
+ and call arguments as if they were first changed according to adjustments in
+ INNER and then by adjustments in OUTER. */
+
+ipa_parm_adjustment_vec
+ipa_combine_adjustments (ipa_parm_adjustment_vec inner,
+ ipa_parm_adjustment_vec outer)
+{
+ int i, outlen = VEC_length (ipa_parm_adjustment_t, outer);
+ int inlen = VEC_length (ipa_parm_adjustment_t, inner);
+ int removals = 0;
+ ipa_parm_adjustment_vec adjustments, tmp;
+
+ tmp = VEC_alloc (ipa_parm_adjustment_t, heap, inlen);
+ for (i = 0; i < inlen; i++)
+ {
+ struct ipa_parm_adjustment *n;
+ n = VEC_index (ipa_parm_adjustment_t, inner, i);
+
+ if (n->remove_param)
+ removals++;
+ else
+ VEC_quick_push (ipa_parm_adjustment_t, tmp, n);
+ }
+
+ adjustments = VEC_alloc (ipa_parm_adjustment_t, heap, outlen + removals);
+ for (i = 0; i < outlen; i++)
+ {
+ struct ipa_parm_adjustment *r;
+ struct ipa_parm_adjustment *out = VEC_index (ipa_parm_adjustment_t,
+ outer, i);
+ struct ipa_parm_adjustment *in = VEC_index (ipa_parm_adjustment_t, tmp,
+ out->base_index);
+
+ gcc_assert (!in->remove_param);
+ if (out->remove_param)
+ {
+ if (!index_in_adjustments_multiple_times_p (in->base_index, tmp))
+ {
+ r = VEC_quick_push (ipa_parm_adjustment_t, adjustments, NULL);
+ memset (r, 0, sizeof (*r));
+ r->remove_param = true;
+ }
+ continue;
+ }
+
+ r = VEC_quick_push (ipa_parm_adjustment_t, adjustments, NULL);
+ memset (r, 0, sizeof (*r));
+ r->base_index = in->base_index;
+ r->type = out->type;
+
+ /* FIXME: Create nonlocal value too. */
+
+ if (in->copy_param && out->copy_param)
+ r->copy_param = true;
+ else if (in->copy_param)
+ r->offset = out->offset;
+ else if (out->copy_param)
+ r->offset = in->offset;
+ else
+ r->offset = in->offset + out->offset;
+ }
+
+ for (i = 0; i < inlen; i++)
+ {
+ struct ipa_parm_adjustment *n = VEC_index (ipa_parm_adjustment_t,
+ inner, i);
+
+ if (n->remove_param)
+ VEC_quick_push (ipa_parm_adjustment_t, adjustments, n);
+ }
+
+ VEC_free (ipa_parm_adjustment_t, heap, tmp);
+ return adjustments;
+}
+
+/* Dump the adjustments in the vector ADJUSTMENTS to dump_file in a human
+ friendly way, assuming they are meant to be applied to FNDECL. */
+
+void
+ipa_dump_param_adjustments (FILE *file, ipa_parm_adjustment_vec adjustments,
+ tree fndecl)
+{
+ int i, len = VEC_length (ipa_parm_adjustment_t, adjustments);
+ bool first = true;
+ VEC(tree, heap) *parms = ipa_get_vector_of_formal_parms (fndecl);
+
+ fprintf (file, "IPA param adjustments: ");
+ for (i = 0; i < len; i++)
+ {
+ struct ipa_parm_adjustment *adj;
+ adj = VEC_index (ipa_parm_adjustment_t, adjustments, i);
+
+ if (!first)
+ fprintf (file, " ");
+ else
+ first = false;
+
+ fprintf (file, "%i. base_index: %i - ", i, adj->base_index);
+ print_generic_expr (file, VEC_index (tree, parms, adj->base_index), 0);
+ if (adj->base)
+ {
+ fprintf (file, ", base: ");
+ print_generic_expr (file, adj->base, 0);
+ }
+ if (adj->reduction)
+ {
+ fprintf (file, ", reduction: ");
+ print_generic_expr (file, adj->reduction, 0);
+ }
+ if (adj->new_ssa_base)
+ {
+ fprintf (file, ", new_ssa_base: ");
+ print_generic_expr (file, adj->new_ssa_base, 0);
+ }
+
+ if (adj->copy_param)
+ fprintf (file, ", copy_param");
+ else if (adj->remove_param)
+ fprintf (file, ", remove_param");
+ else
+ fprintf (file, ", offset %li", (long) adj->offset);
+ if (adj->by_ref)
+ fprintf (file, ", by_ref");
+ print_node_brief (file, ", type: ", adj->type, 0);
+ fprintf (file, "\n");
+ }
+ 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 a parameter call note. */
+
+static void
+ipa_write_param_call_note (struct output_block *ob,
+ struct ipa_param_call_note *note)
+{
+ gcc_assert (!note->processed);
+ lto_output_uleb128_stream (ob->main_stream, gimple_uid (note->stmt));
+ lto_output_sleb128_stream (ob->main_stream, note->formal_id);
+ lto_output_sleb128_stream (ob->main_stream, note->count);
+ lto_output_sleb128_stream (ob->main_stream, note->frequency);
+ lto_output_sleb128_stream (ob->main_stream, note->loop_nest);
+}
+
+/* Read in a parameter call note. */
+
+static void
+ipa_read_param_call_note (struct lto_input_block *ib,
+ struct ipa_node_params *info)
+
+{
+ struct ipa_param_call_note *note = XCNEW (struct ipa_param_call_note);
+
+ note->lto_stmt_uid = (unsigned int) lto_input_uleb128 (ib);
+ note->formal_id = (int) lto_input_sleb128 (ib);
+ note->count = (gcov_type) lto_input_sleb128 (ib);
+ note->frequency = (int) lto_input_sleb128 (ib);
+ note->loop_nest = (int) lto_input_sleb128 (ib);
+
+ note->next = info->param_calls;
+ info->param_calls = note;
+}
+
+
+/* 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;
+ int note_count = 0;
+ struct ipa_param_call_note *note;
+
+ 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);
+ bp_pack_value (bp, info->params[j].called, 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 (note = info->param_calls; note; note = note->next)
+ note_count++;
+ lto_output_uleb128_stream (ob->main_stream, note_count);
+ for (note = info->param_calls; note; note = note->next)
+ ipa_write_param_call_note (ob, note);
+}
+
+/* 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;
+ int i, note_count;
+
+ 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);
+ info->params[k].called = 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);
+ }
+
+ note_count = lto_input_uleb128 (ib);
+ for (i = 0; i < note_count; i++)
+ ipa_read_param_call_note (ib, info);
+}
+
+/* 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)
+ continue;
+ ipa_initialize_node_params (node);
+ 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));
+ }
+ }
+}
+
+/* Walk param call notes of NODE and set their call statements given the uid
+ stored in each note and STMTS which is an array of statements indexed by the
+ uid. */
+
+void
+lto_ipa_fixup_call_notes (struct cgraph_node *node, gimple *stmts)
+{
+ struct ipa_node_params *info;
+ struct ipa_param_call_note *note;
+
+ ipa_check_create_node_params ();
+ info = IPA_NODE_REF (node);
+ note = info->param_calls;
+ /* If there are no notes or they have already been fixed up (the same fixup
+ is called for both inlining and ipa-cp), there's nothing to do. */
+ if (!note || note->stmt)
+ return;
+
+ do
+ {
+ note->stmt = stmts[note->lto_stmt_uid];
+ note = note->next;
+ }
+ while (note);
+}
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