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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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40
LUFA/Drivers/USB/HighLevel/PipeStream.c
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@ -45,46 +45,6 @@ uint8_t Pipe_Discard_Stream(uint16_t Length
if ((ErrorCode = Pipe_WaitUntilReady()))
return ErrorCode;
#if defined(FAST_STREAM_TRANSFERS)
uint8_t BytesRemToAlignment = (Pipe_BytesInPipe() & 0x07);
if (Length >= 8)
{
Length -= BytesRemToAlignment;
switch (BytesRemToAlignment)
{
default:
do
{
if (!(Pipe_IsReadWriteAllowed()))
{
Pipe_ClearIN();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return PIPE_RWSTREAM_CallbackAborted;
#endif
if ((ErrorCode = Pipe_WaitUntilReady()))
return ErrorCode;
}
Length -= 8;
Pipe_Discard_Byte();
case 7: Pipe_Discard_Byte();
case 6: Pipe_Discard_Byte();
case 5: Pipe_Discard_Byte();
case 4: Pipe_Discard_Byte();
case 3: Pipe_Discard_Byte();
case 2: Pipe_Discard_Byte();
case 1: Pipe_Discard_Byte();
} while (Length >= 8);
}
}
#endif
while (Length)
{
if (!(Pipe_IsReadWriteAllowed()))