#include "system.h"
#include "coretypes.h"
#include "tm.h"
-#include "toplev.h"
#include "tree.h"
#include "expr.h"
#include "flags.h"
}
-/* Output bitpack BP to output stream S. */
-
-void
-lto_output_bitpack (struct lto_output_stream *s, struct bitpack_d *bp)
-{
- unsigned i;
- bitpack_word_t v;
-
- lto_output_uleb128_stream (s, VEC_length (bitpack_word_t, bp->values));
- for (i = 0; VEC_iterate (bitpack_word_t, bp->values, i, v); i++)
- lto_output_uleb128_stream (s, v);
-}
-
-
/* Output STRING of LEN characters to the string
table in OB. The string might or might not include a trailing '\0'.
Then put the index onto the INDEX_STREAM. */
so we skip it here. */
bp_pack_value (bp, TREE_PUBLIC (expr), 1);
}
+ else
+ bp_pack_value (bp, 0, 4);
bp_pack_value (bp, TREE_ADDRESSABLE (expr), 1);
bp_pack_value (bp, TREE_THIS_VOLATILE (expr), 1);
if (DECL_P (expr))
bp_pack_value (bp, DECL_UNSIGNED (expr), 1);
else if (TYPE_P (expr))
bp_pack_value (bp, TYPE_UNSIGNED (expr), 1);
+ else
+ bp_pack_value (bp, 0, 1);
/* We write debug info two times, do not confuse the second one. */
bp_pack_value (bp, TYPE_P (expr) ? 0 : TREE_ASM_WRITTEN (expr), 1);
bp_pack_value (bp, TREE_NO_WARNING (expr), 1);
bp_pack_value (bp, TREE_DEPRECATED (expr), 1);
if (TYPE_P (expr))
bp_pack_value (bp, TYPE_SATURATING (expr), 1);
- if (TREE_CODE (expr) == SSA_NAME)
+ else if (TREE_CODE (expr) == SSA_NAME)
bp_pack_value (bp, SSA_NAME_IS_DEFAULT_DEF (expr), 1);
+ else
+ bp_pack_value (bp, 0, 1);
}
bp_pack_value (bp, DECL_DISREGARD_INLINE_LIMITS (expr), 1);
bp_pack_value (bp, DECL_PURE_P (expr), 1);
bp_pack_value (bp, DECL_LOOPING_CONST_OR_PURE_P (expr), 1);
+ if (DECL_STATIC_DESTRUCTOR (expr))
+ bp_pack_value (bp, DECL_FINI_PRIORITY (expr), HOST_BITS_PER_SHORT);
}
bp_pack_value (bp, BLOCK_NUMBER (expr), 31);
}
+/* Pack all the non-pointer fields of the TS_TRANSLATION_UNIT_DECL structure
+ of expression EXPR into bitpack BP. */
+
+static void
+pack_ts_translation_unit_decl_value_fields (struct bitpack_d *bp ATTRIBUTE_UNUSED, tree expr ATTRIBUTE_UNUSED)
+{
+}
/* Pack all the non-pointer fields in EXPR into a bit pack. */
-static struct bitpack_d *
-pack_value_fields (tree expr)
+static void
+pack_value_fields (struct bitpack_d *bp, tree expr)
{
enum tree_code code;
- struct bitpack_d *bp;
code = TREE_CODE (expr);
- bp = bitpack_create ();
/* Note that all these functions are highly sensitive to changes in
the types and sizes of each of the fields being packed. */
gcc_unreachable ();
}
- return bp;
+ if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
+ pack_ts_translation_unit_decl_value_fields (bp, expr);
}
lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr);
break;
+ case TRANSLATION_UNIT_DECL:
+ output_record_start (ob, LTO_translation_unit_decl_ref);
+ lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr);
+ break;
+
default:
/* No other node is indexable, so it should have been handled
by lto_output_tree. */
lto_output_ts_common_tree_pointers (struct output_block *ob, tree expr,
bool ref_p)
{
- lto_output_tree_or_ref (ob, TREE_TYPE (expr), ref_p);
+ if (TREE_CODE (expr) != IDENTIFIER_NODE)
+ lto_output_tree_or_ref (ob, TREE_TYPE (expr), ref_p);
}
|| TREE_CODE (expr) == PARM_DECL)
&& DECL_HAS_VALUE_EXPR_P (expr))
lto_output_tree_or_ref (ob, DECL_VALUE_EXPR (expr), ref_p);
+
+ if (TREE_CODE (expr) == VAR_DECL)
+ lto_output_tree_or_ref (ob, DECL_DEBUG_EXPR (expr), ref_p);
}
else if (TREE_CODE (expr) == FUNCTION_TYPE
|| TREE_CODE (expr) == METHOD_TYPE)
lto_output_tree_or_ref (ob, TYPE_ARG_TYPES (expr), ref_p);
- else if (TREE_CODE (expr) == VECTOR_TYPE)
- lto_output_tree_or_ref (ob, TYPE_DEBUG_REPRESENTATION_TYPE (expr), ref_p);
lto_output_tree_or_ref (ob, TYPE_SIZE (expr), ref_p);
lto_output_tree_or_ref (ob, TYPE_SIZE_UNIT (expr), ref_p);
tree t;
lto_output_location (ob, BLOCK_SOURCE_LOCATION (expr));
- lto_output_chain (ob, BLOCK_VARS (expr), ref_p);
+ /* We do not stream BLOCK_VARS but lazily construct it when reading
+ in decls. */
output_uleb128 (ob, VEC_length (tree, BLOCK_NONLOCALIZED_VARS (expr)));
- for (i = 0; VEC_iterate (tree, BLOCK_NONLOCALIZED_VARS (expr), i, t); i++)
- lto_output_tree_or_ref (ob, t, ref_p);
+ FOR_EACH_VEC_ELT (tree, BLOCK_NONLOCALIZED_VARS (expr), i, t)
+ {
+ gcc_assert (DECL_CONTEXT (t) != expr);
+ lto_output_tree_or_ref (ob, t, ref_p);
+ }
lto_output_tree_or_ref (ob, BLOCK_SUPERCONTEXT (expr), ref_p);
lto_output_tree_or_ref (ob, BLOCK_ABSTRACT_ORIGIN (expr), ref_p);
lto_output_tree_or_ref (ob, BLOCK_FRAGMENT_ORIGIN (expr), ref_p);
lto_output_tree_or_ref (ob, BLOCK_FRAGMENT_CHAIN (expr), ref_p);
- lto_output_chain (ob, BLOCK_SUBBLOCKS (expr), ref_p);
+ /* Do not output BLOCK_SUBBLOCKS. Instead on streaming-in this
+ list is re-constructed from BLOCK_SUPERCONTEXT. */
}
/* Note that the number of BINFO slots has already been emitted in
EXPR's header (see lto_output_tree_header) because this length
is needed to build the empty BINFO node on the reader side. */
- for (i = 0; VEC_iterate (tree, BINFO_BASE_BINFOS (expr), i, t); i++)
+ FOR_EACH_VEC_ELT (tree, BINFO_BASE_BINFOS (expr), i, t)
lto_output_tree_or_ref (ob, t, ref_p);
output_zero (ob);
lto_output_tree_or_ref (ob, BINFO_VPTR_FIELD (expr), ref_p);
output_uleb128 (ob, VEC_length (tree, BINFO_BASE_ACCESSES (expr)));
- for (i = 0; VEC_iterate (tree, BINFO_BASE_ACCESSES (expr), i, t); i++)
+ FOR_EACH_VEC_ELT (tree, BINFO_BASE_ACCESSES (expr), i, t)
lto_output_tree_or_ref (ob, t, ref_p);
lto_output_tree_or_ref (ob, BINFO_INHERITANCE_CHAIN (expr), ref_p);
}
}
+/* Write a TS_TARGET_OPTION tree in EXPR to OB. */
+
+static void
+lto_output_ts_target_option (struct output_block *ob, tree expr)
+{
+ struct cl_target_option *t = TREE_TARGET_OPTION (expr);
+ struct bitpack_d bp;
+ unsigned i, len;
+
+ /* The cl_target_option is target specific and generated by the options
+ awk script, so we just recreate a byte-by-byte copy here. */
+
+ bp = bitpack_create (ob->main_stream);
+ len = sizeof (struct cl_target_option);
+ for (i = 0; i < len; i++)
+ bp_pack_value (&bp, ((unsigned char *)t)[i], 8);
+ /* Catch struct size mismatches between reader and writer. */
+ bp_pack_value (&bp, 0x12345678, 32);
+ lto_output_bitpack (&bp);
+}
+
+/* Write a TS_TRANSLATION_UNIT_DECL tree in EXPR to OB. */
+
+static void
+lto_output_ts_translation_unit_decl_tree_pointers (struct output_block *ob,
+ tree expr)
+{
+ output_string (ob, ob->main_stream, TRANSLATION_UNIT_LANGUAGE (expr));
+}
/* Helper for lto_output_tree. Write all pointer fields in EXPR to output
block OB. If REF_P is true, the leaves of EXPR are emitted as
sorry ("gimple bytecode streams do not support the optimization attribute");
if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
- sorry ("gimple bytecode streams do not support the target attribute");
+ lto_output_ts_target_option (ob, expr);
+
+ if (CODE_CONTAINS_STRUCT (code, TS_TRANSLATION_UNIT_DECL))
+ lto_output_ts_translation_unit_decl_tree_pointers (ob, expr);
}
static void
lto_write_tree (struct output_block *ob, tree expr, bool ref_p, int ix)
{
- struct bitpack_d *bp;
+ struct bitpack_d bp;
/* Write the header, containing everything needed to materialize
EXPR on the reading side. */
/* Pack all the non-pointer fields in EXPR into a bitpack and write
the resulting bitpack. */
- bp = pack_value_fields (expr);
- lto_output_bitpack (ob->main_stream, bp);
- bitpack_delete (bp);
+ bp = bitpack_create (ob->main_stream);
+ pack_value_fields (&bp, expr);
+ lto_output_bitpack (&bp);
/* Write all the pointer fields in EXPR. */
lto_output_tree_pointers (ob, expr, ref_p);
/* Emit all the EH regions in the region array. */
output_sleb128 (ob, VEC_length (eh_region, fn->eh->region_array));
- for (i = 0; VEC_iterate (eh_region, fn->eh->region_array, i, eh); i++)
+ FOR_EACH_VEC_ELT (eh_region, fn->eh->region_array, i, eh)
output_eh_region (ob, eh);
/* Emit all landing pads. */
output_sleb128 (ob, VEC_length (eh_landing_pad, fn->eh->lp_array));
- for (i = 0; VEC_iterate (eh_landing_pad, fn->eh->lp_array, i, lp); i++)
+ FOR_EACH_VEC_ELT (eh_landing_pad, fn->eh->lp_array, i, lp)
output_eh_lp (ob, lp);
/* Emit all the runtime type data. */
output_sleb128 (ob, VEC_length (tree, fn->eh->ttype_data));
- for (i = 0; VEC_iterate (tree, fn->eh->ttype_data, i, ttype); i++)
+ FOR_EACH_VEC_ELT (tree, fn->eh->ttype_data, i, ttype)
lto_output_tree_ref (ob, ttype);
/* Emit the table of action chains. */
{
tree t;
output_sleb128 (ob, VEC_length (tree, fn->eh->ehspec_data.arm_eabi));
- for (i = 0;
- VEC_iterate (tree, fn->eh->ehspec_data.arm_eabi, i, t);
- i++)
+ FOR_EACH_VEC_ELT (tree, fn->eh->ehspec_data.arm_eabi, i, t)
lto_output_tree_ref (ob, t);
}
else
{
uchar c;
output_sleb128 (ob, VEC_length (uchar, fn->eh->ehspec_data.other));
- for (i = 0; VEC_iterate (uchar, fn->eh->ehspec_data.other, i, c); i++)
+ FOR_EACH_VEC_ELT (uchar, fn->eh->ehspec_data.other, i, c)
lto_output_1_stream (ob->main_stream, c);
}
}
unsigned i;
enum gimple_code code;
enum LTO_tags tag;
- struct bitpack_d *bp;
+ struct bitpack_d bp;
/* Emit identifying tag. */
code = gimple_code (stmt);
output_record_start (ob, tag);
/* Emit the tuple header. */
- bp = bitpack_create ();
- bp_pack_value (bp, gimple_num_ops (stmt), sizeof (unsigned) * 8);
- bp_pack_value (bp, gimple_no_warning_p (stmt), 1);
+ bp = bitpack_create (ob->main_stream);
+ bp_pack_value (&bp, gimple_num_ops (stmt), sizeof (unsigned) * 8);
+ bp_pack_value (&bp, gimple_no_warning_p (stmt), 1);
if (is_gimple_assign (stmt))
- bp_pack_value (bp, gimple_assign_nontemporal_move_p (stmt), 1);
- bp_pack_value (bp, gimple_has_volatile_ops (stmt), 1);
- bp_pack_value (bp, stmt->gsbase.subcode, 16);
- lto_output_bitpack (ob->main_stream, bp);
- bitpack_delete (bp);
+ bp_pack_value (&bp, gimple_assign_nontemporal_move_p (stmt), 1);
+ bp_pack_value (&bp, gimple_has_volatile_ops (stmt), 1);
+ bp_pack_value (&bp, stmt->gsbase.subcode, 16);
+ lto_output_bitpack (&bp);
/* Emit location information for the statement. */
lto_output_location (ob, gimple_location (stmt));
for (i = 0; i < gimple_num_ops (stmt); i++)
{
tree op = gimple_op (stmt, i);
+ /* Wrap all uses of non-automatic variables inside MEM_REFs
+ so that we do not have to deal with type mismatches on
+ merged symbols during IL read in. The first operand
+ of GIMPLE_DEBUG must be a decl, not MEM_REF, though. */
+ if (op && (i || !is_gimple_debug (stmt)))
+ {
+ tree *basep = &op;
+ while (handled_component_p (*basep))
+ basep = &TREE_OPERAND (*basep, 0);
+ if (TREE_CODE (*basep) == VAR_DECL
+ && !auto_var_in_fn_p (*basep, current_function_decl)
+ && !DECL_REGISTER (*basep))
+ {
+ bool volatilep = TREE_THIS_VOLATILE (*basep);
+ *basep = build2 (MEM_REF, TREE_TYPE (*basep),
+ build_fold_addr_expr (*basep),
+ build_int_cst (build_pointer_type
+ (TREE_TYPE (*basep)), 0));
+ TREE_THIS_VOLATILE (*basep) = volatilep;
+ }
+ }
lto_output_tree_ref (ob, op);
}
break;
if (section_type == LTO_section_function_body)
{
const char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (fn));
- section_name = lto_get_section_name (section_type, name);
+ section_name = lto_get_section_name (section_type, name, NULL);
}
else
- section_name = lto_get_section_name (section_type, NULL);
+ section_name = lto_get_section_name (section_type, NULL, NULL);
lto_begin_section (section_name, !flag_wpa);
free (section_name);
static void
output_function (struct cgraph_node *node)
{
- struct bitpack_d *bp;
+ struct bitpack_d bp;
tree function;
struct function *fn;
basic_block bb;
struct output_block *ob;
+ unsigned i;
+ tree t;
function = node->decl;
fn = DECL_STRUCT_FUNCTION (function);
output_record_start (ob, LTO_function);
/* Write all the attributes for FN. */
- bp = bitpack_create ();
- bp_pack_value (bp, fn->is_thunk, 1);
- bp_pack_value (bp, fn->has_local_explicit_reg_vars, 1);
- bp_pack_value (bp, fn->after_tree_profile, 1);
- bp_pack_value (bp, fn->returns_pcc_struct, 1);
- bp_pack_value (bp, fn->returns_struct, 1);
- bp_pack_value (bp, fn->can_throw_non_call_exceptions, 1);
- bp_pack_value (bp, fn->always_inline_functions_inlined, 1);
- bp_pack_value (bp, fn->after_inlining, 1);
- bp_pack_value (bp, fn->dont_save_pending_sizes_p, 1);
- bp_pack_value (bp, fn->stdarg, 1);
- bp_pack_value (bp, fn->has_nonlocal_label, 1);
- bp_pack_value (bp, fn->calls_alloca, 1);
- bp_pack_value (bp, fn->calls_setjmp, 1);
- bp_pack_value (bp, fn->va_list_fpr_size, 8);
- bp_pack_value (bp, fn->va_list_gpr_size, 8);
- lto_output_bitpack (ob->main_stream, bp);
- bitpack_delete (bp);
+ bp = bitpack_create (ob->main_stream);
+ bp_pack_value (&bp, fn->is_thunk, 1);
+ bp_pack_value (&bp, fn->has_local_explicit_reg_vars, 1);
+ bp_pack_value (&bp, fn->after_tree_profile, 1);
+ bp_pack_value (&bp, fn->returns_pcc_struct, 1);
+ bp_pack_value (&bp, fn->returns_struct, 1);
+ bp_pack_value (&bp, fn->can_throw_non_call_exceptions, 1);
+ bp_pack_value (&bp, fn->always_inline_functions_inlined, 1);
+ bp_pack_value (&bp, fn->after_inlining, 1);
+ bp_pack_value (&bp, fn->dont_save_pending_sizes_p, 1);
+ bp_pack_value (&bp, fn->stdarg, 1);
+ bp_pack_value (&bp, fn->has_nonlocal_label, 1);
+ bp_pack_value (&bp, fn->calls_alloca, 1);
+ bp_pack_value (&bp, fn->calls_setjmp, 1);
+ bp_pack_value (&bp, fn->va_list_fpr_size, 8);
+ bp_pack_value (&bp, fn->va_list_gpr_size, 8);
+ lto_output_bitpack (&bp);
+
+ /* Output the function start and end loci. */
+ lto_output_location (ob, fn->function_start_locus);
+ lto_output_location (ob, fn->function_end_locus);
/* Output current IL state of the function. */
output_uleb128 (ob, fn->curr_properties);
lto_output_tree_ref (ob, fn->nonlocal_goto_save_area);
/* Output all the local variables in the function. */
- lto_output_tree_ref (ob, fn->local_decls);
+ output_sleb128 (ob, VEC_length (tree, fn->local_decls));
+ FOR_EACH_VEC_ELT (tree, fn->local_decls, i, t)
+ lto_output_tree_ref (ob, t);
/* Output the head of the arguments list. */
lto_output_tree_ref (ob, DECL_ARGUMENTS (function));
}
+/* Used to pass data to trivally_defined_alias callback. */
+struct sets {
+ cgraph_node_set set;
+ varpool_node_set vset;
+};
+
+
/* Return true if alias pair P belongs to the set of cgraph nodes in
SET. If P is a an alias for a VAR_DECL, it can always be emitted.
However, for FUNCTION_DECL aliases, we should only output the pair
the file processed by LTRANS. */
static bool
-output_alias_pair_p (alias_pair *p, cgraph_node_set set, varpool_node_set vset)
+trivally_defined_alias (tree decl ATTRIBUTE_UNUSED,
+ tree target, void *data)
{
- if (TREE_CODE (p->decl) == VAR_DECL)
- return varpool_node_in_set_p (varpool_node_for_asm (p->target), vset);
+ struct sets *set = (struct sets *) data;
+ struct cgraph_node *fnode = NULL;
+ struct varpool_node *vnode = NULL;
- /* Check if the assembler name for P->TARGET has its cgraph node in SET. */
- gcc_assert (TREE_CODE (p->decl) == FUNCTION_DECL);
- return cgraph_node_in_set_p (cgraph_node_for_asm (p->target), set);
+ fnode = cgraph_node_for_asm (target);
+ if (fnode)
+ return cgraph_node_in_set_p (fnode, set->set);
+ vnode = varpool_node_for_asm (target);
+ return vnode && varpool_node_in_set_p (vnode, set->vset);
}
+/* Return true if alias pair P should be output in the current
+ partition contains cgrpah nodes SET and varpool nodes VSET.
+ DEFINED is set of all aliases whose targets are defined in
+ the partition.
+
+ Normal aliases are output when they are defined, while WEAKREF
+ aliases are output when they are used. */
+
+static bool
+output_alias_pair_p (alias_pair *p, symbol_alias_set_t *defined,
+ cgraph_node_set set, varpool_node_set vset)
+{
+ struct cgraph_node *node;
+ struct varpool_node *vnode;
+
+ if (lookup_attribute ("weakref", DECL_ATTRIBUTES (p->decl)))
+ {
+ if (TREE_CODE (p->decl) == VAR_DECL)
+ {
+ vnode = varpool_get_node (p->decl);
+ return (vnode
+ && referenced_from_this_partition_p (&vnode->ref_list, set, vset));
+ }
+ node = cgraph_get_node (p->decl);
+ return (node
+ && (referenced_from_this_partition_p (&node->ref_list, set, vset)
+ || reachable_from_this_partition_p (node, set)));
+ }
+ else
+ return symbol_alias_set_contains (defined, p->decl);
+}
/* Output any unreferenced global symbol defined in SET, alias pairs
and labels. */
alias_pair *p;
unsigned i;
struct varpool_node *vnode;
+ symbol_alias_set_t *defined;
+ struct sets setdata;
+
+ setdata.set = set;
+ setdata.vset = vset;
ob = create_output_block (LTO_section_static_initializer);
ob->cgraph_node = NULL;
output_zero (ob);
+ /* We really need to propagate in both directoins:
+ for normal aliases we propagate from first defined alias to
+ all aliases defined based on it. For weakrefs we propagate in
+ the oposite direction. */
+ defined = propagate_aliases_backward (trivally_defined_alias, &setdata);
+
/* Emit the alias pairs for the nodes in SET. */
- for (i = 0; VEC_iterate (alias_pair, alias_pairs, i, p); i++)
- {
- if (output_alias_pair_p (p, set, vset))
- {
- lto_output_tree_ref (ob, p->decl);
- lto_output_tree_ref (ob, p->target);
- }
- }
+ FOR_EACH_VEC_ELT (alias_pair, alias_pairs, i, p)
+ if (output_alias_pair_p (p, defined, set, vset))
+ {
+ lto_output_tree_ref (ob, p->decl);
+ lto_output_tree_ref (ob, p->target);
+ }
+ symbol_alias_set_destroy (defined);
output_zero (ob);
size_t len;
const char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (function));
char *section_name =
- lto_get_section_name (LTO_section_function_body, name);
+ lto_get_section_name (LTO_section_function_body, name, NULL);
size_t i, j;
struct lto_in_decl_state *in_state;
struct lto_out_decl_state *out_state = lto_get_out_decl_state ();
#endif
decl_state = lto_new_out_decl_state ();
lto_push_out_decl_state (decl_state);
- if (!flag_wpa)
+ if (gimple_has_body_p (node->decl))
output_function (node);
else
copy_function (node);
NULL, /* sub */
NULL, /* next */
0, /* static_pass_number */
- TV_IPA_LTO_GIMPLE_IO, /* tv_id */
+ TV_IPA_LTO_GIMPLE_OUT, /* tv_id */
0, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
}
-/* Helper function of write_symbols_of_kind. CACHE is the streamer
- cache with all the pickled nodes. STREAM is the stream where to
- write the table. V is a vector with the DECLs that should be on
- the table. SEEN is a bitmap of symbols written so far. */
+/* Write symbol T into STREAM in CACHE. SEEN specifies symbols we wrote
+ so far. */
static void
-write_symbol_vec (struct lto_streamer_cache_d *cache,
- struct lto_output_stream *stream,
- VEC(tree,heap) *v, bitmap seen)
+write_symbol (struct lto_streamer_cache_d *cache,
+ struct lto_output_stream *stream,
+ tree t, struct pointer_set_t *seen, bool alias)
{
- tree t;
- int index;
-
- for (index = 0; VEC_iterate(tree, v, index, t); index++)
- {
- const char *name;
- enum gcc_plugin_symbol_kind kind;
- enum gcc_plugin_symbol_visibility visibility;
- int slot_num;
- uint64_t size;
- const char *comdat;
-
- /* None of the following kinds of symbols are needed in the
- symbol table. */
- if (!TREE_PUBLIC (t)
- || is_builtin_fn (t)
- || DECL_ABSTRACT (t)
- || TREE_CODE (t) == RESULT_DECL)
- continue;
+ const char *name;
+ enum gcc_plugin_symbol_kind kind;
+ enum gcc_plugin_symbol_visibility visibility;
+ int slot_num;
+ uint64_t size;
+ const char *comdat;
- gcc_assert (TREE_CODE (t) == VAR_DECL
- || TREE_CODE (t) == FUNCTION_DECL);
+ /* None of the following kinds of symbols are needed in the
+ symbol table. */
+ if (!TREE_PUBLIC (t)
+ || is_builtin_fn (t)
+ || DECL_ABSTRACT (t)
+ || TREE_CODE (t) == RESULT_DECL)
+ return;
- name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (t));
+ gcc_assert (TREE_CODE (t) == VAR_DECL
+ || TREE_CODE (t) == FUNCTION_DECL);
- /* FIXME lto: this is from assemble_name_raw in varasm.c. For some
- architectures we might have to do the same name manipulations that
- ASM_OUTPUT_LABELREF does. */
- if (name[0] == '*')
- name = &name[1];
+ name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (t));
- lto_streamer_cache_lookup (cache, t, &slot_num);
- gcc_assert (slot_num >= 0);
+ /* This behaves like assemble_name_raw in varasm.c, performing the
+ same name manipulations that ASM_OUTPUT_LABELREF does. */
+ name = IDENTIFIER_POINTER ((*targetm.asm_out.mangle_assembler_name) (name));
- /* Avoid duplicate symbols. */
- if (bitmap_bit_p (seen, slot_num))
- continue;
- else
- bitmap_set_bit (seen, slot_num);
+ if (pointer_set_contains (seen, name))
+ return;
+ pointer_set_insert (seen, name);
- if (DECL_EXTERNAL (t))
- {
- if (DECL_WEAK (t))
- kind = GCCPK_WEAKUNDEF;
- else
- kind = GCCPK_UNDEF;
- }
- else
- {
- if (DECL_WEAK (t))
- kind = GCCPK_WEAKDEF;
- else if (DECL_COMMON (t))
- kind = GCCPK_COMMON;
- else
- kind = GCCPK_DEF;
- }
-
- switch (DECL_VISIBILITY(t))
- {
- case VISIBILITY_DEFAULT:
- visibility = GCCPV_DEFAULT;
- break;
- case VISIBILITY_PROTECTED:
- visibility = GCCPV_PROTECTED;
- break;
- case VISIBILITY_HIDDEN:
- visibility = GCCPV_HIDDEN;
- break;
- case VISIBILITY_INTERNAL:
- visibility = GCCPV_INTERNAL;
- break;
- }
+ lto_streamer_cache_lookup (cache, t, &slot_num);
+ gcc_assert (slot_num >= 0);
- if (kind == GCCPK_COMMON
- && DECL_SIZE (t)
- && TREE_CODE (DECL_SIZE (t)) == INTEGER_CST)
- size = (((uint64_t) TREE_INT_CST_HIGH (DECL_SIZE (t))) << 32)
- | TREE_INT_CST_LOW (DECL_SIZE (t));
+ if (DECL_EXTERNAL (t))
+ {
+ if (DECL_WEAK (t))
+ kind = GCCPK_WEAKUNDEF;
else
- size = 0;
-
- if (DECL_ONE_ONLY (t))
- comdat = IDENTIFIER_POINTER (DECL_COMDAT_GROUP (t));
+ kind = GCCPK_UNDEF;
+ }
+ else
+ {
+ if (DECL_WEAK (t))
+ kind = GCCPK_WEAKDEF;
+ else if (DECL_COMMON (t))
+ kind = GCCPK_COMMON;
else
- comdat = "";
+ kind = GCCPK_DEF;
+
+ /* When something is defined, it should have node attached. */
+ gcc_assert (alias || TREE_CODE (t) != VAR_DECL
+ || varpool_get_node (t)->finalized);
+ gcc_assert (alias || TREE_CODE (t) != FUNCTION_DECL
+ || (cgraph_get_node (t)
+ && cgraph_get_node (t)->analyzed));
+ }
- lto_output_data_stream (stream, name, strlen (name) + 1);
- lto_output_data_stream (stream, comdat, strlen (comdat) + 1);
- lto_output_data_stream (stream, &kind, 1);
- lto_output_data_stream (stream, &visibility, 1);
- lto_output_data_stream (stream, &size, 8);
- lto_output_data_stream (stream, &slot_num, 4);
+ /* Imitate what default_elf_asm_output_external do.
+ When symbol is external, we need to output it with DEFAULT visibility
+ when compiling with -fvisibility=default, while with HIDDEN visibility
+ when symbol has attribute (visibility("hidden")) specified.
+ targetm.binds_local_p check DECL_VISIBILITY_SPECIFIED and gets this
+ right. */
+
+ if (DECL_EXTERNAL (t)
+ && !targetm.binds_local_p (t))
+ visibility = GCCPV_DEFAULT;
+ else
+ switch (DECL_VISIBILITY(t))
+ {
+ case VISIBILITY_DEFAULT:
+ visibility = GCCPV_DEFAULT;
+ break;
+ case VISIBILITY_PROTECTED:
+ visibility = GCCPV_PROTECTED;
+ break;
+ case VISIBILITY_HIDDEN:
+ visibility = GCCPV_HIDDEN;
+ break;
+ case VISIBILITY_INTERNAL:
+ visibility = GCCPV_INTERNAL;
+ break;
+ }
+
+ if (kind == GCCPK_COMMON
+ && DECL_SIZE (t)
+ && TREE_CODE (DECL_SIZE (t)) == INTEGER_CST)
+ {
+ size = (HOST_BITS_PER_WIDE_INT >= 64)
+ ? (uint64_t) int_size_in_bytes (TREE_TYPE (t))
+ : (((uint64_t) TREE_INT_CST_HIGH (DECL_SIZE_UNIT (t))) << 32)
+ | TREE_INT_CST_LOW (DECL_SIZE_UNIT (t));
}
+ else
+ size = 0;
+
+ if (DECL_ONE_ONLY (t))
+ comdat = IDENTIFIER_POINTER (DECL_COMDAT_GROUP (t));
+ else
+ comdat = "";
+
+ lto_output_data_stream (stream, name, strlen (name) + 1);
+ lto_output_data_stream (stream, comdat, strlen (comdat) + 1);
+ lto_output_data_stream (stream, &kind, 1);
+ lto_output_data_stream (stream, &visibility, 1);
+ lto_output_data_stream (stream, &size, 8);
+ lto_output_data_stream (stream, &slot_num, 4);
}
-/* Write IL symbols of KIND. CACHE is the streamer cache with all the
- pickled nodes. SEEN is a bitmap of symbols written so far. */
+/* Write an IL symbol table to OB.
+ SET and VSET are cgraph/varpool node sets we are outputting. */
static void
-write_symbols_of_kind (lto_decl_stream_e_t kind,
- struct lto_streamer_cache_d *cache, bitmap seen)
+produce_symtab (struct output_block *ob,
+ cgraph_node_set set, varpool_node_set vset)
{
- struct lto_out_decl_state *out_state;
+ struct lto_streamer_cache_d *cache = ob->writer_cache;
+ char *section_name = lto_get_section_name (LTO_section_symtab, NULL, NULL);
+ struct pointer_set_t *seen;
+ struct cgraph_node *node, *alias;
+ struct varpool_node *vnode, *valias;
struct lto_output_stream stream;
- unsigned num_fns =
- VEC_length (lto_out_decl_state_ptr, lto_function_decl_states);
- unsigned idx;
+ lto_varpool_encoder_t varpool_encoder = ob->decl_state->varpool_node_encoder;
+ lto_cgraph_encoder_t encoder = ob->decl_state->cgraph_node_encoder;
+ int i;
+ alias_pair *p;
+ struct sets setdata;
+ symbol_alias_set_t *defined;
+
+ setdata.set = set;
+ setdata.vset = vset;
+
+ lto_begin_section (section_name, false);
+ free (section_name);
+ seen = pointer_set_create ();
memset (&stream, 0, sizeof (stream));
- out_state = lto_get_out_decl_state ();
- write_symbol_vec (cache, &stream, out_state->streams[kind].trees, seen);
- for (idx = 0; idx < num_fns; idx++)
+ /* Write all functions.
+ First write all defined functions and the write all used functions.
+ This is done so only to handle duplicated symbols in cgraph. */
+ for (i = 0; i < lto_cgraph_encoder_size (encoder); i++)
{
- out_state =
- VEC_index (lto_out_decl_state_ptr, lto_function_decl_states, idx);
- write_symbol_vec (cache, &stream, out_state->streams[kind].trees, seen);
+ node = lto_cgraph_encoder_deref (encoder, i);
+ if (DECL_EXTERNAL (node->decl))
+ continue;
+ if (DECL_COMDAT (node->decl)
+ && cgraph_comdat_can_be_unshared_p (node))
+ continue;
+ if (node->alias || node->global.inlined_to)
+ continue;
+ write_symbol (cache, &stream, node->decl, seen, false);
+ for (alias = node->same_body; alias; alias = alias->next)
+ write_symbol (cache, &stream, alias->decl, seen, true);
+ }
+ for (i = 0; i < lto_cgraph_encoder_size (encoder); i++)
+ {
+ node = lto_cgraph_encoder_deref (encoder, i);
+ if (!DECL_EXTERNAL (node->decl))
+ continue;
+ if (DECL_COMDAT (node->decl)
+ && cgraph_comdat_can_be_unshared_p (node))
+ continue;
+ if (node->alias || node->global.inlined_to)
+ continue;
+ write_symbol (cache, &stream, node->decl, seen, false);
+ for (alias = node->same_body; alias; alias = alias->next)
+ write_symbol (cache, &stream, alias->decl, seen, true);
}
- lto_write_stream (&stream);
-}
-
-
-/* Write an IL symbol table. CACHE is the streamer cache with all the
- pickled nodes. */
-
-static void
-produce_symtab (struct lto_streamer_cache_d *cache)
-{
- char *section_name = lto_get_section_name (LTO_section_symtab, NULL);
- bitmap seen;
+ /* Write all variables. */
+ for (i = 0; i < lto_varpool_encoder_size (varpool_encoder); i++)
+ {
+ vnode = lto_varpool_encoder_deref (varpool_encoder, i);
+ if (DECL_EXTERNAL (vnode->decl))
+ continue;
+ /* COMDAT virtual tables can be unshared. Do not declare them
+ in the LTO symbol table to prevent linker from forcing them
+ into the output. */
+ if (DECL_COMDAT (vnode->decl)
+ && !vnode->force_output
+ && vnode->finalized
+ && DECL_VIRTUAL_P (vnode->decl))
+ continue;
+ if (vnode->alias)
+ continue;
+ write_symbol (cache, &stream, vnode->decl, seen, false);
+ for (valias = vnode->extra_name; valias; valias = valias->next)
+ write_symbol (cache, &stream, valias->decl, seen, true);
+ }
+ for (i = 0; i < lto_varpool_encoder_size (varpool_encoder); i++)
+ {
+ vnode = lto_varpool_encoder_deref (varpool_encoder, i);
+ if (!DECL_EXTERNAL (vnode->decl))
+ continue;
+ if (DECL_COMDAT (vnode->decl)
+ && !vnode->force_output
+ && vnode->finalized
+ && DECL_VIRTUAL_P (vnode->decl))
+ continue;
+ if (vnode->alias)
+ continue;
+ write_symbol (cache, &stream, vnode->decl, seen, false);
+ for (valias = vnode->extra_name; valias; valias = valias->next)
+ write_symbol (cache, &stream, valias->decl, seen, true);
+ }
- lto_begin_section (section_name, false);
- free (section_name);
+ /* Write all aliases. */
+ defined = propagate_aliases_backward (trivally_defined_alias, &setdata);
+ FOR_EACH_VEC_ELT (alias_pair, alias_pairs, i, p)
+ if (output_alias_pair_p (p, defined, set, vset))
+ write_symbol (cache, &stream, p->decl, seen, true);
+ symbol_alias_set_destroy (defined);
- seen = lto_bitmap_alloc ();
- write_symbols_of_kind (LTO_DECL_STREAM_FN_DECL, cache, seen);
- write_symbols_of_kind (LTO_DECL_STREAM_VAR_DECL, cache, seen);
- lto_bitmap_free (seen);
+ lto_write_stream (&stream);
+ pointer_set_destroy (seen);
lto_end_section ();
}
memset (&header, 0, sizeof (struct lto_decl_header));
- section_name = lto_get_section_name (LTO_section_decls, NULL);
+ section_name = lto_get_section_name (LTO_section_decls, NULL, NULL);
lto_begin_section (section_name, !flag_wpa);
free (section_name);
lto_end_section ();
- /* Write the symbol table. */
- produce_symtab (ob->writer_cache);
+ /* Write the symbol table. It is used by linker to determine dependencies
+ and thus we can skip it for WPA. */
+ if (!flag_wpa)
+ produce_symtab (ob, set, vset);
/* Write command line opts. */
lto_write_options ();
NULL, /* sub */
NULL, /* next */
0, /* static_pass_number */
- TV_IPA_LTO_DECL_IO, /* tv_id */
+ TV_IPA_LTO_DECL_OUT, /* tv_id */
0, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */