Jens Arnold
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c1cd0469ca
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Implement mono predictor in assembler for coldfire, yielding a ~6% speedup for mono -c1000. Apply ideas gained from it back to the stereo predictor, saving 4 instructions. No speed increase for stereo, probably due to cache aliasing effects. * 80-column police.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19296 a1c6a512-1295-4272-9138-f99709370657
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2008-12-02 02:26:04 +00:00 |
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Jens Arnold
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75bd4adbc2
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Shuffling around register allocation allows to keep decoded0 and decoded1 in registers, for a slight speedup.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19287 a1c6a512-1295-4272-9138-f99709370657
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2008-12-01 13:21:06 +00:00 |
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Jens Arnold
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3761c0108c
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Branch optimisation in both C (giving hints to gcc - verified using -fprofile-arcs and gcov) and asm files. Biggest effect on coldfire (-c1000: +8%, -c2000: +5%), but ARM also profits a bit (less than 1% on ARM7TDMI, around 1% on ARM1136).
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19199 a1c6a512-1295-4272-9138-f99709370657
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2008-11-24 18:40:49 +00:00 |
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Jens Arnold
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1b14167861
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Centralise compile-time configuration.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19121 a1c6a512-1295-4272-9138-f99709370657
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2008-11-16 17:49:37 +00:00 |
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Jens Arnold
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87f5359d60
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Shuffle some instructions around for that extra percent of performance. Fix a bunch of comments.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15216 a1c6a512-1295-4272-9138-f99709370657
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2007-10-19 22:57:19 +00:00 |
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Jens Arnold
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5d066590cc
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APE codec: Assembler optimised predictor for coldfire. Heavily based on the arm version atm, instruction reordering will probably allow for a bit more speedup soon. Speedup: -c1000: 177% -> 210%, -c2000: 135% -> 147%, -c3000: 97% -> 103%.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15211 a1c6a512-1295-4272-9138-f99709370657
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2007-10-19 21:35:07 +00:00 |
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