diff options
Diffstat (limited to 'passes/pmgen/ice40_dsp.cc')
| -rw-r--r-- | passes/pmgen/ice40_dsp.cc | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/passes/pmgen/ice40_dsp.cc b/passes/pmgen/ice40_dsp.cc index 7463d598f..8c50a9393 100644 --- a/passes/pmgen/ice40_dsp.cc +++ b/passes/pmgen/ice40_dsp.cc @@ -59,10 +59,15 @@ void create_ice40_dsp(ice40_dsp_pm &pm) return; } - log(" replacing $mul with SB_MAC16 cell.\n"); - bool mul_signed = pm.st.mul->getParam("\\A_SIGNED").as_bool(); + if (mul_signed) { + log(" inference of signed iCE40 DSP arithmetic is currently not supported.\n"); + return; + } + + log(" replacing $mul with SB_MAC16 cell.\n"); + Cell *cell = pm.module->addCell(NEW_ID, "\\SB_MAC16"); pm.module->swap_names(cell, pm.st.mul); |