/* Get a section name for a particular type or name. The NAME field
- is only used if SECTION_TYPE is LTO_section_function_body or
- LTO_static_initializer. For all others it is ignored. The callee
- of this function is responcible to free the returned name. */
+ is only used if SECTION_TYPE is LTO_section_function_body. For all
+ others it is ignored. The callee of this function is responsible
+ to free the returned name. */
char *
-lto_get_section_name (int section_type, const char *name)
+lto_get_section_name (int section_type, const char *name, struct lto_file_decl_data *f)
{
- switch (section_type)
+ const char *add;
+ char post[32];
+ const char *sep;
+
+ if (section_type == LTO_section_function_body)
{
- case LTO_section_function_body:
gcc_assert (name != NULL);
if (name[0] == '*')
name++;
- return concat (LTO_SECTION_NAME_PREFIX, name, NULL);
-
- case LTO_section_static_initializer:
- return concat (LTO_SECTION_NAME_PREFIX, ".statics", NULL);
-
- case LTO_section_symtab:
- return concat (LTO_SECTION_NAME_PREFIX, ".symtab", NULL);
-
- case LTO_section_decls:
- return concat (LTO_SECTION_NAME_PREFIX, ".decls", NULL);
-
- case LTO_section_cgraph:
- return concat (LTO_SECTION_NAME_PREFIX, ".cgraph", NULL);
-
- case LTO_section_varpool:
- return concat (LTO_SECTION_NAME_PREFIX, ".vars", NULL);
-
- case LTO_section_refs:
- return concat (LTO_SECTION_NAME_PREFIX, ".refs", NULL);
-
- case LTO_section_jump_functions:
- return concat (LTO_SECTION_NAME_PREFIX, ".jmpfuncs", NULL);
-
- case LTO_section_ipa_pure_const:
- return concat (LTO_SECTION_NAME_PREFIX, ".pureconst", NULL);
-
- case LTO_section_ipa_reference:
- return concat (LTO_SECTION_NAME_PREFIX, ".reference", NULL);
+ add = name;
+ sep = "";
+ }
+ else if (section_type < LTO_N_SECTION_TYPES)
+ {
+ add = lto_section_name[section_type];
+ sep = ".";
+ }
+ else
+ internal_error ("bytecode stream: unexpected LTO section %s", name);
- case LTO_section_opts:
- return concat (LTO_SECTION_NAME_PREFIX, ".opts", NULL);
+ /* Make the section name unique so that ld -r combining sections
+ doesn't confuse the reader with merged sections.
- case LTO_section_cgraph_opt_sum:
- return concat (LTO_SECTION_NAME_PREFIX, ".cgraphopt", NULL);
+ For options don't add a ID, the option reader cannot deal with them
+ and merging should be ok here.
- default:
- internal_error ("bytecode stream: unexpected LTO section %s", name);
- }
+ XXX: use crc64 to minimize collisions? */
+ if (section_type == LTO_section_opts)
+ strcpy (post, "");
+ else
+ sprintf (post, ".%x", f ? f->id : crc32_string(0, get_random_seed (false)));
+ return concat (LTO_SECTION_NAME_PREFIX, sep, add, post, NULL);
}
lto_section_name[i], lto_stats.section_size[i]);
}
-/* We cache a single bitpack assuming that usually at most one is
- life. This saves repeated re-allocations. */
-static struct bitpack_d *cached_bp;
-
-/* Create a new bitpack. */
-
-struct bitpack_d *
-bitpack_create (void)
-{
- if (cached_bp)
- {
- struct bitpack_d *bp = cached_bp;
- cached_bp = NULL;
- return bp;
- }
- return XCNEW (struct bitpack_d);
-}
-
-
-/* Free the memory used by bitpack BP. */
-
-void
-bitpack_delete (struct bitpack_d *bp)
-{
- if (!cached_bp)
- {
- bp->num_bits = 0;
- bp->first_unused_bit = 0;
- VEC_truncate (bitpack_word_t, bp->values, 0);
- cached_bp = bp;
- return;
- }
- VEC_free (bitpack_word_t, heap, bp->values);
- free (bp);
-}
-
-
-/* Return an index to the word in bitpack BP that contains the
- next NBITS. */
-
-static inline unsigned
-bp_get_next_word (struct bitpack_d *bp, unsigned nbits)
-{
- unsigned last, ix;
-
- /* In principle, the next word to use is determined by the
- number of bits already processed in BP. */
- ix = bp->num_bits / BITS_PER_BITPACK_WORD;
-
- /* All the encoded bit patterns in BP are contiguous, therefore if
- the next NBITS would straddle over two different words, move the
- index to the next word and update the number of encoded bits
- by adding up the hole of unused bits created by this move. */
- bp->first_unused_bit %= BITS_PER_BITPACK_WORD;
- last = bp->first_unused_bit + nbits - 1;
- if (last >= BITS_PER_BITPACK_WORD)
- {
- ix++;
- bp->num_bits += (BITS_PER_BITPACK_WORD - bp->first_unused_bit);
- bp->first_unused_bit = 0;
- }
-
- return ix;
-}
-
-
-/* Pack NBITS of value VAL into bitpack BP. */
-
-void
-bp_pack_value (struct bitpack_d *bp, bitpack_word_t val, unsigned nbits)
-{
- unsigned ix;
- bitpack_word_t word;
-
- /* We cannot encode more bits than BITS_PER_BITPACK_WORD. */
-#ifdef ENABLE_CHECKING
- gcc_assert (nbits > 0 && nbits <= BITS_PER_BITPACK_WORD);
-#endif
-
- /* Compute which word will contain the next NBITS. */
- ix = bp_get_next_word (bp, nbits);
- if (ix >= VEC_length (bitpack_word_t, bp->values))
- {
- /* If there is no room left in the last word of the values
- array, add a new word. Additionally, we should only
- need to add a single word, since every pack operation cannot
- use more bits than fit in a single word. */
- VEC_safe_push (bitpack_word_t, heap, bp->values, 0);
- }
-
- /* Grab the last word to pack VAL into. */
- word = VEC_index (bitpack_word_t, bp->values, ix);
-
- /* To fit VAL in WORD, we need to shift VAL to the left to
- skip the bottom BP->FIRST_UNUSED_BIT bits. */
- val <<= bp->first_unused_bit;
-
- /* Update WORD with VAL. */
- word |= val;
-
- /* Update BP. */
- VEC_replace (bitpack_word_t, bp->values, ix, word);
- bp->num_bits += nbits;
- bp->first_unused_bit += nbits;
-}
-
-
-/* Unpack the next NBITS from bitpack BP. */
-
-bitpack_word_t
-bp_unpack_value (struct bitpack_d *bp, unsigned nbits)
-{
- bitpack_word_t val, word, mask;
- unsigned ix;
-
- /* We cannot decode more bits than BITS_PER_BITPACK_WORD. */
- gcc_assert (nbits > 0 && nbits <= BITS_PER_BITPACK_WORD);
-
- /* Compute which word contains the next NBITS. */
- ix = bp_get_next_word (bp, nbits);
- word = VEC_index (bitpack_word_t, bp->values, ix);
-
- /* Compute the mask to get NBITS from WORD. */
- mask = (nbits == BITS_PER_BITPACK_WORD)
- ? (bitpack_word_t) -1
- : ((bitpack_word_t) 1 << nbits) - 1;
-
- /* Shift WORD to the right to skip over the bits already decoded
- in word. */
- word >>= bp->first_unused_bit;
-
- /* Apply the mask to obtain the requested value. */
- val = word & mask;
-
- /* Update BP->NUM_BITS for the next unpack operation. */
- bp->num_bits += nbits;
- bp->first_unused_bit += nbits;
-
- return val;
-}
-
/* Check that all the TS_* structures handled by the lto_output_* and
lto_input_* routines are exactly ALL the structures defined in
handled_p[TS_OMP_CLAUSE] = true;
handled_p[TS_OPTIMIZATION] = true;
handled_p[TS_TARGET_OPTION] = true;
+ handled_p[TS_TRANSLATION_UNIT_DECL] = true;
/* Anything not marked above will trigger the following assertion.
If this assertion triggers, it means that there is a new TS_*
return;
if (TYPE_P (node))
- *nodep = node = gimple_register_type (node);
+ {
+ /* Type merging will get confused by the canonical types as they
+ are set by the middle-end. */
+ if (in_lto_p)
+ TYPE_CANONICAL (node) = NULL_TREE;
+ *nodep = node = gimple_register_type (node);
+ }
/* Return if node is already seen. */
if (pointer_set_insert (seen_nodes, node))
unnecessarily. */
common_nodes = lto_get_common_nodes ();
- for (i = 0; VEC_iterate (tree, common_nodes, i, node); i++)
+ FOR_EACH_VEC_ELT (tree, common_nodes, i, node)
preload_common_node (cache, node);
VEC_free(tree, heap, common_nodes);
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