diff options
Diffstat (limited to 'gcc/bitmap.c')
| -rw-r--r-- | gcc/bitmap.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/gcc/bitmap.c b/gcc/bitmap.c index 0a94e648807..ac20ae5830f 100644 --- a/gcc/bitmap.c +++ b/gcc/bitmap.c @@ -35,7 +35,7 @@ bitmap_register (bitmap b MEM_STAT_DECL) /* Account the overhead. */ static void -register_overhead (bitmap b, int amount) +register_overhead (bitmap b, size_t amount) { if (bitmap_mem_desc.contains_descriptor_for_instance (b)) bitmap_mem_desc.register_instance_overhead (amount, b); @@ -468,6 +468,27 @@ bitmap_copy (bitmap to, const_bitmap from) to_ptr = to_elt; } } + +/* Move a bitmap to another bitmap. */ + +void +bitmap_move (bitmap to, bitmap from) +{ + gcc_assert (to->obstack == from->obstack); + + bitmap_clear (to); + + *to = *from; + + if (GATHER_STATISTICS) + { + size_t sz = 0; + for (bitmap_element *e = to->first; e; e = e->next) + sz += sizeof (bitmap_element); + register_overhead (to, sz); + register_overhead (from, -sz); + } +} /* Find a bitmap element that would hold a bitmap's bit. Update the `current' field even if we can't find an element that |