diff options
| author | Eddie Hung <eddie@fpgeh.com> | 2019-09-26 09:57:11 -0700 |
|---|---|---|
| committer | Eddie Hung <eddie@fpgeh.com> | 2019-09-26 09:57:11 -0700 |
| commit | 27e5bf5aad229ef330bfea932f6b194ec5c09b68 (patch) | |
| tree | 1cc494f9b2e75298da55df2303c8f833a20ff86f /techlibs/ice40 | |
| parent | 35aaa8d73a75f36a42eea9ef2b210d9e79e5edc3 (diff) | |
| download | yosys-27e5bf5aad229ef330bfea932f6b194ec5c09b68.tar.gz yosys-27e5bf5aad229ef330bfea932f6b194ec5c09b68.tar.bz2 yosys-27e5bf5aad229ef330bfea932f6b194ec5c09b68.zip | |
Stop trying to be too smart by prematurely optimising
Diffstat (limited to 'techlibs/ice40')
| -rw-r--r-- | techlibs/ice40/synth_ice40.cc | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/techlibs/ice40/synth_ice40.cc b/techlibs/ice40/synth_ice40.cc index 98d3e44e3..694782e5b 100644 --- a/techlibs/ice40/synth_ice40.cc +++ b/techlibs/ice40/synth_ice40.cc @@ -276,9 +276,11 @@ struct SynthIce40Pass : public ScriptPass 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=$__MUL16X16", "(if -dsp)"); - run("wreduce t:$add", " (if -dsp)"); - run("ice40_dsp", " (if -dsp)"); - run("chtype -set $mul t:$__soft_mul","(if -dsp)"); + run("opt_expr -fine a:mul2dsp", " (if -dsp)"); + run("wreduce a:mul2dsp", " (if -dsp)"); + run("ice40_dsp", " (if -dsp)"); + run("setattr -unset mul2dsp a:mul2dsp", "(if -dsp)"); + run("chtype -set $mul t:$__soft_mul", " (if -dsp)"); } run("alumacc"); run("opt"); |