diff options
| author | Daniel Jacobowitz <dan@debian.org> | 2004-08-24 00:46:11 +0000 |
|---|---|---|
| committer | Daniel Jacobowitz <drow@gcc.gnu.org> | 2004-08-24 00:46:11 +0000 |
| commit | d685c974fe6ef429c0019254ed2fd65d347ceabc (patch) | |
| tree | 27ff5ccbd60df69edffed8aae8d3ce5a5a79a9a5 /gcc/ggc-zone.c | |
| parent | f676971a92dcc163394d15c819e904cbed2438d6 (diff) | |
| download | gcc-d685c974fe6ef429c0019254ed2fd65d347ceabc.zip gcc-d685c974fe6ef429c0019254ed2fd65d347ceabc.tar.gz gcc-d685c974fe6ef429c0019254ed2fd65d347ceabc.tar.bz2 | |
ggc-zone.c (struc alloc_chunk): Rearrange flag bits and SIZE.
* ggc-zone.c (struc alloc_chunk): Rearrange flag bits and SIZE.
Remove TYPECODE.
(ggc_alloc_zone_1): Mark TYPE as unused. Don't save it in the chunk.
From-SVN: r86456
Diffstat (limited to 'gcc/ggc-zone.c')
| -rw-r--r-- | gcc/ggc-zone.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/gcc/ggc-zone.c b/gcc/ggc-zone.c index fc605f4..86fbc28 100644 --- a/gcc/ggc-zone.c +++ b/gcc/ggc-zone.c @@ -146,10 +146,13 @@ struct alloc_chunk { unsigned int magic; #endif unsigned int type:1; - unsigned int typecode:14; - unsigned int large:1; - unsigned int size:15; unsigned int mark:1; + unsigned char large; + unsigned short size; + /* Right now, on 32-bit hosts we don't have enough room to save the + typecode unless we make the one remaining flag into a bitfield. + There's a performance cost to that, so we don't do it until we're + ready to use the type information for something. */ union { struct alloc_chunk *next_free; char data[1]; @@ -594,7 +597,8 @@ free_chunk (struct alloc_chunk *chunk, size_t size, struct alloc_zone *zone) /* Allocate a chunk of memory of SIZE bytes. */ static void * -ggc_alloc_zone_1 (size_t orig_size, struct alloc_zone *zone, short type +ggc_alloc_zone_1 (size_t orig_size, struct alloc_zone *zone, + short type ATTRIBUTE_UNUSED MEM_STAT_DECL) { size_t bin = 0; @@ -696,7 +700,8 @@ ggc_alloc_zone_1 (size_t orig_size, struct alloc_zone *zone, short type #endif chunk->type = 1; chunk->mark = 0; - chunk->typecode = type; + /* We could save TYPE in the chunk, but we don't use that for + anything yet. */ result = chunk->u.data; #ifdef ENABLE_GC_CHECKING |