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Stop trying to be too smart by prematurely optimising

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This commit is contained in:
Eddie Hung 2019-09-26 09:57:11 -07:00
parent 35aaa8d73a
commit 27e5bf5aad
3 changed files with 14 additions and 38 deletions
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8
techlibs/ice40/synth_ice40.cc
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@ -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");