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| author | Eddie Hung <eddie@fpgeh.com> | 2019-10-08 13:03:06 -0700 |
|---|---|---|
| committer | Eddie Hung <eddie@fpgeh.com> | 2019-10-08 13:03:06 -0700 |
| commit | 304e5f9ea45b8a4e2a28aba7f2820d1862377fef (patch) | |
| tree | be1d59d00acdcab765a2f2d43117a640d79a6d03 /techlibs/xilinx | |
| parent | 4f0818275fe44c451be59235616061be8ff5e382 (diff) | |
| parent | 3fb604c75d3e8ee45d35fac8b787cb95a8adcf84 (diff) | |
| download | yosys-304e5f9ea45b8a4e2a28aba7f2820d1862377fef.tar.gz yosys-304e5f9ea45b8a4e2a28aba7f2820d1862377fef.tar.bz2 yosys-304e5f9ea45b8a4e2a28aba7f2820d1862377fef.zip | |
Merge remote-tracking branch 'origin/master' into xaig_dff
Diffstat (limited to 'techlibs/xilinx')
| -rw-r--r-- | techlibs/xilinx/synth_xilinx.cc | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc index a99aef7c7..a5358cf64 100644 --- a/techlibs/xilinx/synth_xilinx.cc +++ b/techlibs/xilinx/synth_xilinx.cc @@ -340,13 +340,17 @@ struct SynthXilinxPass : public ScriptPass run("techmap -map +/cmp2lut.v -D LUT_WIDTH=6"); } - if (check_label("map_dsp"), "(skip if '-nodsp')") { + if (check_label("map_dsp", "(skip if '-nodsp')")) { if (!nodsp || help_mode) { // NB: Xilinx multipliers are signed only - run("techmap -map +/mul2dsp.v -map +/xilinx/dsp_map.v -D DSP_A_MAXWIDTH=25 -D DSP_A_MAXWIDTH_PARTIAL=18 -D DSP_B_MAXWIDTH=18 " - "-D DSP_A_MINWIDTH=2 -D DSP_B_MINWIDTH=2 " // Blocks Nx1 multipliers - "-D DSP_Y_MINWIDTH=9 " // UG901 suggests small multiplies are those 4x4 and smaller - "-D DSP_SIGNEDONLY=1 -D DSP_NAME=$__MUL25X18"); + run("techmap -map +/mul2dsp.v -map +/xilinx/dsp_map.v -D DSP_A_MAXWIDTH=25 " + "-D DSP_A_MAXWIDTH_PARTIAL=18 -D DSP_B_MAXWIDTH=18 " // Partial multipliers are intentionally + // limited to 18x18 in order to take + // advantage of the (PCOUT << 17) -> PCIN + // dedicated cascade chain capability + "-D DSP_A_MINWIDTH=2 -D DSP_B_MINWIDTH=2 " // Blocks Nx1 multipliers + "-D DSP_Y_MINWIDTH=9 " // UG901 suggests small multiplies are those 4x4 and smaller + "-D DSP_SIGNEDONLY=1 -D DSP_NAME=$__MUL25X18"); run("select a:mul2dsp"); run("setattr -unset mul2dsp"); run("opt_expr -fine"); |