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| author | Eddie Hung <eddie@fpgeh.com> | 2019-06-24 11:51:55 -0700 |
|---|---|---|
| committer | Eddie Hung <eddie@fpgeh.com> | 2019-06-24 11:51:55 -0700 |
| commit | aa1eeda567d09e2d2ffd40cd008d0166d2910273 (patch) | |
| tree | 016ba7d84d64abde2db534128d517f8b3e6fc152 /techlibs/xilinx | |
| parent | c2387394e32e7a4513076b5d81beb499ceea2542 (diff) | |
| download | yosys-aa1eeda567d09e2d2ffd40cd008d0166d2910273.tar.gz yosys-aa1eeda567d09e2d2ffd40cd008d0166d2910273.tar.bz2 yosys-aa1eeda567d09e2d2ffd40cd008d0166d2910273.zip | |
Modify costs for muxcover
Diffstat (limited to 'techlibs/xilinx')
| -rw-r--r-- | techlibs/xilinx/synth_xilinx.cc | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc index 2cf28fce1..a84f54e99 100644 --- a/techlibs/xilinx/synth_xilinx.cc +++ b/techlibs/xilinx/synth_xilinx.cc @@ -282,7 +282,21 @@ struct SynthXilinxPass : public ScriptPass // NB: Cost of mux2 is 100; mux8 should cost between 3 and 4 // of those so that 4:1 muxes and below are implemented // out of mux2s - std::string muxcover_args = " -dmux=0 -mux8=350 -mux16=400"; + std::string muxcover_args = " -dmux=0"; + switch (minmuxf) { + case 5: muxcover_args += " -mux8=350 -mux16=400"; break; + case 6: muxcover_args += " -mux8=450 -mux16=500"; break; + case 7: muxcover_args += " -mux8=550 -mux16=600"; break; + case 8: muxcover_args += " -mux8=650 -mux16=700"; break; + case 9: muxcover_args += " -mux16=750"; break; + case 10: muxcover_args += " -mux16=850"; break; + case 11: muxcover_args += " -mux16=950"; break; + case 12: muxcover_args += " -mux16=1050"; break; + case 13: muxcover_args += " -mux16=1150"; break; + case 14: muxcover_args += " -mux16=1250"; break; + case 15: muxcover_args += " -mux16=1350"; break; + default: muxcover_args += " -mux16=1450"; break; + } run("muxcover " + muxcover_args, "('-minmuxf' only)"); } } |