Effect of SMS register move scheduling

[Richard Sandiford]

Revital Eres <revital.eres at linaro.org> writes:
> btw, do you also have numbers of how much SMS (hopefully) improves
> performance on top of the vectorized code?

OK, here's a comparison of:

    -mcpu=cortex-a8 -mfpu=neon -mfloat-abi=softfp -mvectorize-with-neon-quad
    -fno-auto-inc-dec

vs:

    -mcpu=cortex-a8 -mfpu=neon -mfloat-abi=softfp -mvectorize-with-neon-quad
    -fmodulo-sched -fmodulo-sched-allow-regmoves -fno-auto-inc-dec

(including the register-scheduling patch).  As you can see, it's a bit
of a mixed bag.

mjpegenc is another case where SMS generates lots of spilling while the
normal scheduler doesn't.

Richard


a3dec
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aacsbr-1
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aacsbr-2
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aacsbr-3
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aes
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avs
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cdgraphics
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dwt
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dxa
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mjpegenc
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qtrle
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