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select once

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This commit is contained in:
Eddie Hung 2019-09-26 10:15:05 -07:00
parent 27e5bf5aad
commit 781dda6175
2 changed files with 12 additions and 8 deletions
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8
techlibs/xilinx/synth_xilinx.cc
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@ -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");
}