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authorDenis Vlasenko2008-12-08 22:56:18 +0000
committerDenis Vlasenko2008-12-08 22:56:18 +0000
commitefb545b9bdd3934dcdbf9bc0890a42081b330049 (patch)
tree4dc9212e49a5dae9890bd324bcc9bf4941e2321d /archival
parentd1a84a2880073f6cc5e2f9f4e5f236cd110f01a0 (diff)
downloadbusybox-efb545b9bdd3934dcdbf9bc0890a42081b330049.zip
busybox-efb545b9bdd3934dcdbf9bc0890a42081b330049.tar.gz
optimize 16- and 32-bit moves
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
Diffstat (limited to 'archival')
-rw-r--r--archival/libunarchive/decompress_unzip.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/archival/libunarchive/decompress_unzip.c b/archival/libunarchive/decompress_unzip.c
index e83cd4f..8696925 100644
--- a/archival/libunarchive/decompress_unzip.c
+++ b/archival/libunarchive/decompress_unzip.c
@@ -1083,8 +1083,7 @@ static uint16_t buffer_read_le_u16(STATE_PARAM_ONLY)
{
uint16_t res;
#if BB_LITTLE_ENDIAN
- /* gcc 4.2.1 is very clever */
- memcpy(&res, &bytebuffer[bytebuffer_offset], 2);
+ move_from_unaligned16(res, &bytebuffer[bytebuffer_offset]);
#else
res = bytebuffer[bytebuffer_offset];
res |= bytebuffer[bytebuffer_offset + 1] << 8;
@@ -1097,7 +1096,7 @@ static uint32_t buffer_read_le_u32(STATE_PARAM_ONLY)
{
uint32_t res;
#if BB_LITTLE_ENDIAN
- memcpy(&res, &bytebuffer[bytebuffer_offset], 4);
+ move_from_unaligned32(res, &bytebuffer[bytebuffer_offset]);
#else
res = bytebuffer[bytebuffer_offset];
res |= bytebuffer[bytebuffer_offset + 1] << 8;