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The FAST_STREAM_TRANSFERS compile time option has been removed due to lack of use and low cost/benefit ratio.

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Add GCC_FORCE_POINTER_ACCESS() macro use to the RingBuffer library header, to attempt to force GCC into producing more efficient code for manipulating the buffers.
This commit is contained in:
Dean Camera 2011-01-08 00:54:30 +00:00
parent 1c74fd78bd
commit d126146887
8 changed files with 17 additions and 173 deletions
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14
LUFA/Drivers/Misc/RingBuffer.h
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@ -126,10 +126,10 @@
*/
static inline void RingBuffer_InitBuffer(RingBuffer_t* Buffer, uint8_t* const DataPtr, const uint16_t Size)
{
GCC_FORCE_POINTER_ACCESS(Buffer);
ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
{
GCC_FORCE_POINTER_ACCESS(Buffer);
{
Buffer->In = DataPtr;
Buffer->Out = DataPtr;
Buffer->Start = &DataPtr[0];
@ -203,9 +203,11 @@
* \param[in,out] Buffer Pointer to a ring buffer structure to insert into.
* \param[in] Data Data element to insert into the buffer.
*/
static inline void RingBuffer_Insert(RingBuffer_t* const Buffer,
static inline void RingBuffer_Insert(RingBuffer_t* Buffer,
const uint8_t Data)
{
GCC_FORCE_POINTER_ACCESS(Buffer);
*Buffer->In = Data;
if (++Buffer->In == Buffer->End)
@ -227,8 +229,10 @@
*
* \return Next data element stored in the buffer.
*/
static inline uint8_t RingBuffer_Remove(RingBuffer_t* const Buffer)
static inline uint8_t RingBuffer_Remove(RingBuffer_t* Buffer)
{
GCC_FORCE_POINTER_ACCESS(Buffer);
uint8_t Data = *Buffer->Out;
if (++Buffer->Out == Buffer->End)