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DMA: Template transfer functions

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~20% speedup in FMV playback on a Ryzen 9 7950X3D. CPUs hate branches.
This commit is contained in:
Stenzek
2023-12-19 00:55:04 +10:00
parent e736998f1e
commit f5ddd7ba32
3 changed files with 75 additions and 31 deletions
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4
src/core/mdec.cpp
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@ -248,7 +248,7 @@ void MDEC::WriteRegister(u32 offset, u32 value)
void MDEC::DMARead(u32* words, u32 word_count)
{
if (s_data_out_fifo.GetSize() < word_count)
if (s_data_out_fifo.GetSize() < word_count) [[unlikely]]
{
Log_WarningPrintf("Insufficient data in output FIFO (requested %u, have %u)", word_count,
s_data_out_fifo.GetSize());
@ -269,7 +269,7 @@ void MDEC::DMARead(u32* words, u32 word_count)
void MDEC::DMAWrite(const u32* words, u32 word_count)
{
if (s_data_in_fifo.GetSpace() < (word_count * 2))
if (s_data_in_fifo.GetSpace() < (word_count * 2)) [[unlikely]]
{
Log_WarningPrintf("Input FIFO overflow (writing %u, space %u)", word_count * 2, s_data_in_fifo.GetSpace());
}