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authorAustin Foxley <austinf@cetoncorp.com>2009-11-22 12:17:38 -0800
committerAustin Foxley <austinf@cetoncorp.com>2009-11-22 12:17:38 -0800
commit5c9ef58ec4bcb2def9e30f0b156f9cfcb1d0d163 (patch)
treef8f889678b653d5275c285a037b9b43f27a91192 /.gitignore
parentf757db2d319ccc5f7034165046fb2bb58901afb1 (diff)
sh: Add new optimisation to the SH4 memcpy
This optimization is based on prefetching and 64bit data transfer via FPU (only for the little endianess) Tests shows that: ---------------------------------------- Memory bandwidth | Gain | sh4-300 | sh4-200 ---------------------------------------- 512 bytes to 16KiB | ~20% | ~25% from 32KiB to 16MiB | ~190% | ~5% ---------------------------------------- Signed-off-by: Austin Foxley <austinf@cetoncorp.com> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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