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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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12
techlibs/ice40/synth_ice40.cc
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@@ -276,11 +276,13 @@ 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("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("select a:mul2dsp", " (if -dsp)");
run("opt_expr -fine", " (if -dsp)");
run("wreduce", " (if -dsp)");
run("setattr -unset mul2dsp", " (if -dsp)");
run("select -clear", " (if -dsp)");
run("ice40_dsp", " (if -dsp)");
run("chtype -set $mul t:$__soft_mul", "(if -dsp)");
}
run("alumacc");
run("opt");

8
techlibs/xilinx/synth_xilinx.cc
View File

@@ -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");
}