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util/ByteReverse: use C99 "restrict"

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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 "ByteReverse.hxx"
#include "Compiler.h"
#include <glib.h> #include <glib.h>
#include <assert.h> #include <assert.h>
void 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(dest != nullptr);
assert(src != nullptr); assert(src != nullptr);
@@ -36,7 +38,8 @@ reverse_bytes_16(uint16_t *dest, const uint16_t *src, const uint16_t *src_end)
} }
void 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(dest != nullptr);
assert(src != nullptr); assert(src != nullptr);
@@ -49,7 +52,8 @@ reverse_bytes_32(uint32_t *dest, const uint32_t *src, const uint32_t *src_end)
} }
void 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(dest != nullptr);
assert(src != 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 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; src += n;
@@ -71,8 +76,8 @@ reverse_bytes_linear(uint8_t *dest, const uint8_t *src, size_t n)
} }
static void static void
reverse_bytes_generic(uint8_t *dest, reverse_bytes_generic(uint8_t *gcc_restrict dest,
const uint8_t *src, const uint8_t *src_end, const uint8_t *gcc_restrict src, const uint8_t *src_end,
size_t frame_size) size_t frame_size)
{ {
assert(dest != nullptr); assert(dest != nullptr);
@@ -89,7 +94,8 @@ reverse_bytes_generic(uint8_t *dest,
} }
void 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) size_t frame_size)
{ {
assert(dest != nullptr); assert(dest != nullptr);