#include "cgraph.h"
#include "vec.h"
#include "vecprim.h"
+#include "alloc-pool.h"
/* Define when debugging the LTO streamer. This causes the writer
to output the numeric value for the memory address of the tree node
struct bitpack_d
{
- /* Total number of bits packed/unpacked so far. */
- size_t num_bits;
+ /* The position of the first unused or unconsumed bit in the word. */
+ unsigned pos;
- /* Values are stored contiguously, so there may be internal
- fragmentation (words with unused bits). Therefore, we need to
- keep track of the first available bit in the last word of the
- bitpack. */
- size_t first_unused_bit;
+ /* The current word we are (un)packing. */
+ bitpack_word_t word;
- /* Vector of words holding the packed values. */
- VEC(bitpack_word_t, heap) *values;
+ /* The lto_output_stream or the lto_input_block we are streaming to/from. */
+ void *stream;
};
/* Tags representing the various IL objects written to the bytecode file
LTO_section_static_initializer,
LTO_section_cgraph,
LTO_section_varpool,
+ LTO_section_refs,
LTO_section_jump_functions,
LTO_section_ipa_pure_const,
LTO_section_ipa_reference,
LTO_section_symtab,
LTO_section_opts,
+ LTO_section_cgraph_opt_sum,
LTO_N_SECTION_TYPES /* Must be last. */
};
/* The mapping between tree nodes and slots into the nodes array. */
htab_t node_map;
+ /* Node map to store entries into. */
+ alloc_pool node_map_entries;
+
/* Next available slot in the nodes and offsets arrays. */
unsigned next_slot;
/* The nodes pickled so far. */
- VEC(tree,gc) *nodes;
+ VEC(tree,heap) *nodes;
/* Offset into the stream where the nodes have been written. */
VEC(unsigned,heap) *offsets;
/* Map reference number to node. */
VEC(cgraph_node_ptr,heap) *nodes;
+
+ /* Map of nodes where we want to output body. */
+ struct pointer_set_t *body;
};
typedef struct lto_cgraph_encoder_d *lto_cgraph_encoder_t;
+/* Return number of encoded nodes in ENCODER. */
+
+static inline int
+lto_cgraph_encoder_size (lto_cgraph_encoder_t encoder)
+{
+ return VEC_length (cgraph_node_ptr, encoder->nodes);
+}
+
+
+/* Encoder data structure used to stream callgraph nodes. */
+struct lto_varpool_encoder_d
+{
+ /* Map nodes to reference number. */
+ struct pointer_map_t *map;
+
+ /* Map reference number to node. */
+ VEC(varpool_node_ptr,heap) *nodes;
+
+ /* Map of nodes where we want to output initializer. */
+ struct pointer_set_t *initializer;
+};
+typedef struct lto_varpool_encoder_d *lto_varpool_encoder_t;
+
+/* Return number of encoded nodes in ENCODER. */
+
+static inline int
+lto_varpool_encoder_size (lto_varpool_encoder_t encoder)
+{
+ return VEC_length (varpool_node_ptr, encoder->nodes);
+}
+
/* Mapping from indices to trees. */
-struct lto_tree_ref_table
+struct GTY(()) lto_tree_ref_table
{
/* Array of referenced trees . */
- tree *trees;
+ tree * GTY((length ("%h.size"))) trees;
/* Size of array. */
unsigned int size;
/* Structure to hold states of input scope. */
-struct lto_in_decl_state
+struct GTY(()) lto_in_decl_state
{
/* Array of lto_in_decl_buffers to store type and decls streams. */
struct lto_tree_ref_table streams[LTO_N_DECL_STREAMS];
/* Encoder for cgraph nodes. */
lto_cgraph_encoder_t cgraph_node_encoder;
+ /* Encoder for varpool nodes. */
+ lto_varpool_encoder_t varpool_node_encoder;
+
/* If this out-decl state belongs to a function, fn_decl points to that
function. Otherwise, it is NULL. */
tree fn_decl;
by lto. This structure contains the tables that are needed by the
serialized functions and ipa passes to connect themselves to the
global types and decls as they are reconstituted. */
-struct lto_file_decl_data
+struct GTY(()) lto_file_decl_data
{
/* Decl state currently used. */
struct lto_in_decl_state *current_decl_state;
struct lto_in_decl_state *global_decl_state;
/* Table of cgraph nodes present in this file. */
- lto_cgraph_encoder_t cgraph_node_encoder;
+ lto_cgraph_encoder_t GTY((skip)) cgraph_node_encoder;
+
+ /* Table of varpool nodes present in this file. */
+ lto_varpool_encoder_t GTY((skip)) varpool_node_encoder;
/* Hash table maps lto-related section names to location in file. */
- htab_t function_decl_states;
+ htab_t GTY((param_is (struct lto_in_decl_state))) function_decl_states;
/* The .o file that these offsets relate to. */
- const char *file_name;
-
- /* Nonzero if this file should be recompiled with LTRANS. */
- unsigned needs_ltrans_p : 1;
+ const char *GTY((skip)) file_name;
/* Hash table maps lto-related section names to location in file. */
- htab_t section_hash_table;
+ htab_t GTY((skip)) section_hash_table;
/* Hash new name of renamed global declaration to its original name. */
- htab_t renaming_hash_table;
+ htab_t GTY((skip)) renaming_hash_table;
+
+ /* Linked list used temporarily in reader */
+ struct lto_file_decl_data *next;
+
+ /* Sub ID for merged objects. */
+ unsigned id;
+
+ /* Symbol resolutions for this file */
+ VEC(ld_plugin_symbol_resolution_t,heap) * GTY((skip)) resolutions;
};
+typedef struct lto_file_decl_data *lto_file_decl_data_ptr;
+
struct lto_char_ptr_base
{
char *ptr;
extern const char *lto_tag_name (enum LTO_tags);
extern bitmap lto_bitmap_alloc (void);
extern void lto_bitmap_free (bitmap);
-extern char *lto_get_section_name (int, const char *);
+extern char *lto_get_section_name (int, const char *, struct lto_file_decl_data *);
extern void print_lto_report (void);
-extern struct bitpack_d *bitpack_create (void);
-extern void bitpack_delete (struct bitpack_d *);
-extern void bp_pack_value (struct bitpack_d *, bitpack_word_t, unsigned);
-extern bitpack_word_t bp_unpack_value (struct bitpack_d *, unsigned);
extern bool lto_streamer_cache_insert (struct lto_streamer_cache_d *, tree,
int *, unsigned *);
extern bool lto_streamer_cache_insert_at (struct lto_streamer_cache_d *, tree,
const char *);
extern void lto_input_constructors_and_inits (struct lto_file_decl_data *,
const char *);
-extern struct bitpack_d *lto_input_bitpack (struct lto_input_block *);
extern void lto_init_reader (void);
extern struct data_in *lto_data_in_create (struct lto_file_decl_data *,
const char *, unsigned,
extern struct output_block *create_output_block (enum lto_section_type);
extern void destroy_output_block (struct output_block *);
extern void lto_output_tree (struct output_block *, tree, bool);
-extern void lto_output_bitpack (struct lto_output_stream *, struct bitpack_d *);
extern void produce_asm (struct output_block *ob, tree fn);
int lto_cgraph_encoder_lookup (lto_cgraph_encoder_t, struct cgraph_node *);
lto_cgraph_encoder_t lto_cgraph_encoder_new (void);
int lto_cgraph_encoder_encode (lto_cgraph_encoder_t, struct cgraph_node *);
-void lto_cgraph_encoder_delete (lto_cgraph_encoder_t encoder);
-void output_cgraph (cgraph_node_set);
+void lto_cgraph_encoder_delete (lto_cgraph_encoder_t);
+bool lto_cgraph_encoder_encode_body_p (lto_cgraph_encoder_t,
+ struct cgraph_node *);
+
+bool lto_varpool_encoder_encode_body_p (lto_varpool_encoder_t,
+ struct varpool_node *);
+struct varpool_node *lto_varpool_encoder_deref (lto_varpool_encoder_t, int);
+int lto_varpool_encoder_lookup (lto_varpool_encoder_t, struct varpool_node *);
+lto_varpool_encoder_t lto_varpool_encoder_new (void);
+int lto_varpool_encoder_encode (lto_varpool_encoder_t, struct varpool_node *);
+void lto_varpool_encoder_delete (lto_varpool_encoder_t);
+bool lto_varpool_encoder_encode_initializer_p (lto_varpool_encoder_t,
+ struct varpool_node *);
+void output_cgraph (cgraph_node_set, varpool_node_set);
void input_cgraph (void);
-void output_varpool (varpool_node_set);
-void input_varpool (void);
+bool referenced_from_other_partition_p (struct ipa_ref_list *,
+ cgraph_node_set,
+ varpool_node_set vset);
+bool reachable_from_other_partition_p (struct cgraph_node *,
+ cgraph_node_set);
+bool referenced_from_this_partition_p (struct ipa_ref_list *,
+ cgraph_node_set,
+ varpool_node_set vset);
+bool reachable_from_this_partition_p (struct cgraph_node *,
+ cgraph_node_set);
+void compute_ltrans_boundary (struct lto_out_decl_state *state,
+ cgraph_node_set, varpool_node_set);
/* In lto-symtab.c. */
extern void lto_symtab_merge_cgraph_nodes (void);
extern tree lto_symtab_prevailing_decl (tree decl);
extern enum ld_plugin_symbol_resolution lto_symtab_get_resolution (tree decl);
+extern void lto_symtab_free (void);
/* In lto-opts.c. */
return (enum tree_code) ((unsigned) tag - 1);
}
-
-/* Return true if FILE needs to be compiled with LTRANS. */
-static inline bool
-lto_file_needs_ltrans_p (struct lto_file_decl_data *file)
-{
- return file->needs_ltrans_p != 0;
-}
-
-
-/* Mark FILE to be compiled with LTRANS. */
-static inline void
-lto_mark_file_for_ltrans (struct lto_file_decl_data *file)
-{
- file->needs_ltrans_p = 1;
-}
-
-
-/* Return true if any files in node set SET need to be compiled
- with LTRANS. */
-static inline bool
-cgraph_node_set_needs_ltrans_p (cgraph_node_set set)
-{
- cgraph_node_set_iterator csi;
-
- for (csi = csi_start (set); !csi_end_p (csi); csi_next (&csi))
- if (lto_file_needs_ltrans_p (csi_node (csi)->local.lto_file_data))
- return true;
-
- return false;
-}
-
-
/* Initialize an lto_out_decl_buffer ENCODER. */
static inline void
lto_init_tree_ref_encoder (struct lto_tree_ref_encoder *encoder,
DEFINE_DECL_STREAM_FUNCS (NAMESPACE_DECL, namespace_decl)
DEFINE_DECL_STREAM_FUNCS (LABEL_DECL, label_decl)
+/* Returns a new bit-packing context for bit-packing into S. */
+static inline struct bitpack_d
+bitpack_create (struct lto_output_stream *s)
+{
+ struct bitpack_d bp;
+ bp.pos = 0;
+ bp.word = 0;
+ bp.stream = (void *)s;
+ return bp;
+}
+
+/* Pack the NBITS bit sized value VAL into the bit-packing context BP. */
+static inline void
+bp_pack_value (struct bitpack_d *bp, bitpack_word_t val, unsigned nbits)
+{
+ bitpack_word_t word = bp->word;
+ int pos = bp->pos;
+ /* If val does not fit into the current bitpack word switch to the
+ next one. */
+ if (pos + nbits > BITS_PER_BITPACK_WORD)
+ {
+ lto_output_uleb128_stream ((struct lto_output_stream *) bp->stream, word);
+ word = val;
+ pos = nbits;
+ }
+ else
+ {
+ word |= val << pos;
+ pos += nbits;
+ }
+ bp->word = word;
+ bp->pos = pos;
+}
+
+/* Finishes bit-packing of BP. */
+static inline void
+lto_output_bitpack (struct bitpack_d *bp)
+{
+ lto_output_uleb128_stream ((struct lto_output_stream *) bp->stream,
+ bp->word);
+ bp->word = 0;
+ bp->pos = 0;
+}
+
+/* Returns a new bit-packing context for bit-unpacking from IB. */
+static inline struct bitpack_d
+lto_input_bitpack (struct lto_input_block *ib)
+{
+ struct bitpack_d bp;
+ bp.word = lto_input_uleb128 (ib);
+ bp.pos = 0;
+ bp.stream = (void *)ib;
+ return bp;
+}
+
+/* Unpacks NBITS bits from the bit-packing context BP and returns them. */
+static inline bitpack_word_t
+bp_unpack_value (struct bitpack_d *bp, unsigned nbits)
+{
+ bitpack_word_t mask, val;
+ int pos = bp->pos;
+
+ mask = (nbits == BITS_PER_BITPACK_WORD
+ ? (bitpack_word_t) -1
+ : ((bitpack_word_t) 1 << nbits) - 1);
+
+ /* If there are not continuous nbits in the current bitpack word
+ switch to the next one. */
+ if (pos + nbits > BITS_PER_BITPACK_WORD)
+ {
+ bp->word = val = lto_input_uleb128 ((struct lto_input_block *)bp->stream);
+ bp->pos = nbits;
+ return val & mask;
+ }
+ val = bp->word;
+ val >>= pos;
+ bp->pos = pos + nbits;
+
+ return val & mask;
+}
+
#endif /* GCC_LTO_STREAMER_H */
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