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| corecode | hm, synplify gets my design to 2117 LUTs and 27.7MHz, yosys/nextpnr-ice40 only to 2969 and 19.21MHz | 16:02 |
|---|---|---|
| corecode | hm, why? | 16:02 |
| corecode | maybe it optimized a quarter of my design away | 16:24 |
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| corecode | nevermind, during placing it goes back up to 2974, but the clock is 28.44 now | 16:42 |
| corecode | i wonder if the synthesis optimized it more or the placement is the factor in it | 16:48 |
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| Lofty | corecode: are you passing -abc9 to synth_ice40? | 19:37 |
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| agg | nextpnr's timing is pretty conservative too, not sure if you can feed its design to synplify to analyse but you could try using icetime on both to compare? | 22:24 |
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