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optimize 16- and 32-bit moves

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function                                             old     new   delta
udhcpd_main                                         1239    1257     +18
udhcp_add_simple_option                               93      92      -1
buffer_read_le_u32                                    19      18      -1
unpack_gz_stream_with_info                           526     520      -6
dnsd_main                                           1470    1463      -7
udhcp_run_script                                    1208    1186     -22
send_ACK                                             255     229     -26
arping_main                                         1661    1623     -38
send_offer                                           470     428     -42
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/8 up/down: 18/-143)          Total: -125 bytes
This commit is contained in:
Denis Vlasenko
2008-12-08 22:56:18 +00:00
parent d1a84a2880
commit efb545b9bd
13 changed files with 97 additions and 77 deletions
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3
networking/zcip.c
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@@ -279,7 +279,8 @@ int zcip_main(int argc, char **argv)
// NOTE: the sequence of addresses we try changes only
// depending on when we detect conflicts.
{
uint32_t t = get_unaligned_u32p((uint32_t *) ((char *)&eth_addr + 2));
uint32_t t;
move_from_unaligned32(t, ((char *)&eth_addr + 2));
srand(t);
}
if (ip.s_addr == 0)