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| author | Eddie Hung <eddie@fpgeh.com> | 2019-09-26 10:15:05 -0700 |
|---|---|---|
| committer | Eddie Hung <eddie@fpgeh.com> | 2019-09-26 10:15:05 -0700 |
| commit | 781dda6175c86fcb2b08d055565d3d99a687e636 (patch) | |
| tree | 1a73ee71cf7f4c89dccd128947e6218bb5a845fa /techlibs/xilinx/synth_xilinx.cc | |
| parent | 27e5bf5aad229ef330bfea932f6b194ec5c09b68 (diff) | |
| download | yosys-781dda6175c86fcb2b08d055565d3d99a687e636.tar.gz yosys-781dda6175c86fcb2b08d055565d3d99a687e636.tar.bz2 yosys-781dda6175c86fcb2b08d055565d3d99a687e636.zip | |
select once
Diffstat (limited to 'techlibs/xilinx/synth_xilinx.cc')
| -rw-r--r-- | techlibs/xilinx/synth_xilinx.cc | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc index b87fa9f6f..0445eb720 100644 --- a/techlibs/xilinx/synth_xilinx.cc +++ b/techlibs/xilinx/synth_xilinx.cc @@ -346,9 +346,11 @@ struct SynthXilinxPass : public ScriptPass "-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("opt_expr -fine a:mul2dsp"); - run("wreduce a:mul2dsp"); - run("setattr -unset mul2dsp a:mul2dsp"); + run("select a:mul2dsp"); + run("opt_expr -fine"): + run("wreduce"); + run("setattr -unset mul2dsp"); + run("select -clear"); run("xilinx_dsp"); run("chtype -set $mul t:$__soft_mul"); } |