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| author | N. Engelhardt <nak@symbioticeda.com> | 2019-10-17 21:33:54 +0200 |
|---|---|---|
| committer | N. Engelhardt <nak@symbioticeda.com> | 2019-10-17 21:33:54 +0200 |
| commit | 3b405d985e789ecf0082f724d2d62d3752e4b60c (patch) | |
| tree | 22bc7aea6e7df31a45e2754e14e26a76f8d83423 /techlibs/ice40/synth_ice40.cc | |
| parent | 0d037bf9d8d866239de15d72dc8c5acd7ab5e5cf (diff) | |
| download | yosys-3b405d985e789ecf0082f724d2d62d3752e4b60c.tar.gz yosys-3b405d985e789ecf0082f724d2d62d3752e4b60c.tar.bz2 yosys-3b405d985e789ecf0082f724d2d62d3752e4b60c.zip | |
Call memory_dff before DSP mapping to reserve registers (fixes #1447)
Diffstat (limited to 'techlibs/ice40/synth_ice40.cc')
| -rw-r--r-- | techlibs/ice40/synth_ice40.cc | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/techlibs/ice40/synth_ice40.cc b/techlibs/ice40/synth_ice40.cc index b66c6bf57..c942126e1 100644 --- a/techlibs/ice40/synth_ice40.cc +++ b/techlibs/ice40/synth_ice40.cc @@ -273,6 +273,7 @@ struct SynthIce40Pass : public ScriptPass run("opt_expr"); run("opt_clean"); if (help_mode || dsp) { + run("memory_dff"); run("techmap -map +/mul2dsp.v -map +/ice40/dsp_map.v -D DSP_A_MAXWIDTH=16 -D DSP_B_MAXWIDTH=16 " "-D DSP_A_MINWIDTH=2 -D DSP_B_MINWIDTH=2 -D DSP_Y_MINWIDTH=11 " "-D DSP_NAME=$__MUL16X16", "(if -dsp)"); |