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util/ByteReverse: use C99 "restrict" 

Micro-optimization.
This commit is contained in:
Max Kellermann 2013-10-16 21:12:11 +02:00
parent 6b2b5af344
commit 08eca827b6
1 changed files with 13 additions and 7 deletions
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20
src/util/ByteReverse.cxx
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@ -18,12 +18,14 @@
*/
#include "ByteReverse.hxx"
#include "Compiler.h"
#include <glib.h>
#include <assert.h>
void
reverse_bytes_16(uint16_t *dest, const uint16_t *src, const uint16_t *src_end)
reverse_bytes_16(uint16_t *gcc_restrict dest,
const uint16_t *gcc_restrict src, const uint16_t *src_end)
{
assert(dest != nullptr);
assert(src != nullptr);
@ -36,7 +38,8 @@ reverse_bytes_16(uint16_t *dest, const uint16_t *src, const uint16_t *src_end)
}
void
reverse_bytes_32(uint32_t *dest, const uint32_t *src, const uint32_t *src_end)
reverse_bytes_32(uint32_t *gcc_restrict dest,
const uint32_t *gcc_restrict src, const uint32_t *src_end)
{
assert(dest != nullptr);
assert(src != nullptr);
@ -49,7 +52,8 @@ reverse_bytes_32(uint32_t *dest, const uint32_t *src, const uint32_t *src_end)
}
void
reverse_bytes_64(uint64_t *dest, const uint64_t *src, const uint64_t *src_end)
reverse_bytes_64(uint64_t *gcc_restrict dest,
const uint64_t *gcc_restrict src, const uint64_t *src_end)
{
assert(dest != nullptr);
assert(src != nullptr);
@ -62,7 +66,8 @@ reverse_bytes_64(uint64_t *dest, const uint64_t *src, const uint64_t *src_end)
}
static void
reverse_bytes_linear(uint8_t *dest, const uint8_t *src, size_t n)
reverse_bytes_linear(uint8_t *gcc_restrict dest,
const uint8_t *gcc_restrict src, size_t n)
{
src += n;
@ -71,8 +76,8 @@ reverse_bytes_linear(uint8_t *dest, const uint8_t *src, size_t n)
}
static void
reverse_bytes_generic(uint8_t *dest,
const uint8_t *src, const uint8_t *src_end,
reverse_bytes_generic(uint8_t *gcc_restrict dest,
const uint8_t *gcc_restrict src, const uint8_t *src_end,
size_t frame_size)
{
assert(dest != nullptr);
@ -89,7 +94,8 @@ reverse_bytes_generic(uint8_t *dest,
}
void
reverse_bytes(uint8_t *dest, const uint8_t *src, const uint8_t *src_end,
reverse_bytes(uint8_t *gcc_restrict dest,
const uint8_t *gcc_restrict src, const uint8_t *src_end,
size_t frame_size)
{
assert(dest != nullptr);