+2010-05-29 Richard Guenther <rguenther@suse.de>
+
+ * lto-streamer.c (cached_bp): New global variable.
+ (bitpack_create): Return the cached bitpack, if available.
+ (bitpack_delete): Clear and cache the bitpack, if appropriate.
+ (bp_pack_value): Remove redundant asserts.
+
2010-05-29 Sebastian Pop <sebastian.pop@amd.com>
PR middle-end/44306
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);
}
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);
}
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);
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. */
- gcc_assert (ix < VEC_length (bitpack_word_t, bp->values) + 1);
VEC_safe_push (bitpack_word_t, heap, bp->values, 0);
}
/* To fit VAL in WORD, we need to shift VAL to the left to
skip the bottom BP->FIRST_UNUSED_BIT bits. */
- gcc_assert (BITS_PER_BITPACK_WORD >= bp->first_unused_bit + nbits);
val <<= bp->first_unused_bit;
/* Update WORD with VAL. */