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Merge 163e339c69 into 7f7ad87b7b

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An_hijkt 2025-04-17 12:40:12 +03:00 committed by GitHub
parent 7f7ad87b7b 163e339c69
commit 29c12cb381
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2 changed files with 91 additions and 3 deletions
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14
techlibs/ice40/ice40_dsp.pmg
View file

@ -23,7 +23,7 @@ match mul
endmatch
code sigA sigB sigH
auto unextend = [](const SigSpec &sig) {
auto unextend_signed = [](const SigSpec &sig) {
int i;
for (i = GetSize(sig)-1; i > 0; i--)
if (sig[i] != sig[i-1])
@ -32,8 +32,16 @@ code sigA sigB sigH
++i;
return sig.extract(0, i);
};
sigA = unextend(port(mul, \A));
sigB = unextend(port(mul, \B));
auto unextend_unsigned = [](const SigSpec &sig) {
int i;
for (i = GetSize(sig)-1; i > 0; i--)
if (sig[i] != SigBit(State::S0))
break;
++i;
return sig.extract(0, i);
};
sigA = param(mul, \A_SIGNED).as_bool() ? unextend_signed(port(mul, \A)) : unextend_unsigned(port(mul, \A));
sigB = param(mul, \B_SIGNED).as_bool() ? unextend_signed(port(mul, \B)) : unextend_unsigned(port(mul, \B));
SigSpec O;
if (mul->type == $mul)

80
tests/arch/ice40/ice40_dsp_const.ys Normal file
View file

@ -0,0 +1,80 @@
read_verilog << EOT
module top(input wire [14:0] a, output wire [18:0] b);
assign b = a*$unsigned(5'b01111);
endmodule
EOT
prep
ice40_dsp
read_verilog << EOT
module ref(a, b);
wire _0_;
wire _1_;
wire _2_;
wire [12:0] _3_;
(* src = "<<EOT:1.30-1.31" *)
input [14:0] a;
wire [14:0] a;
(* src = "<<EOT:1.52-1.53" *)
output [18:0] b;
wire [18:0] b;
SB_MAC16 #(
.A_REG(1'h0),
.A_SIGNED(32'd0),
.BOTADDSUB_CARRYSELECT(2'h0),
.BOTADDSUB_LOWERINPUT(2'h2),
.BOTADDSUB_UPPERINPUT(1'h1),
.BOTOUTPUT_SELECT(2'h3),
.BOT_8x8_MULT_REG(1'h0),
.B_REG(1'h0),
.B_SIGNED(32'd0),
.C_REG(1'h0),
.D_REG(1'h0),
.MODE_8x8(1'h0),
.NEG_TRIGGER(1'h0),
.PIPELINE_16x16_MULT_REG1(1'h0),
.PIPELINE_16x16_MULT_REG2(1'h0),
.TOPADDSUB_CARRYSELECT(2'h3),
.TOPADDSUB_LOWERINPUT(2'h2),
.TOPADDSUB_UPPERINPUT(1'h1),
.TOPOUTPUT_SELECT(2'h3),
.TOP_8x8_MULT_REG(1'h0)
) _4_ (
.A({ 1'h0, a }),
.ACCUMCI(1'hx),
.ACCUMCO(_1_),
.ADDSUBBOT(1'h0),
.ADDSUBTOP(1'h0),
.AHOLD(1'h0),
.B(16'b1111),
.BHOLD(1'h0),
.C(16'h0000),
.CE(1'h0),
.CHOLD(1'h0),
.CI(1'hx),
.CLK(1'h0),
.CO(_2_),
.D(16'h0000),
.DHOLD(1'h0),
.IRSTBOT(1'h0),
.IRSTTOP(1'h0),
.O({ _3_, b }),
.OHOLDBOT(1'h0),
.OHOLDTOP(1'h0),
.OLOADBOT(1'h0),
.OLOADTOP(1'h0),
.ORSTBOT(1'h0),
.ORSTTOP(1'h0),
.SIGNEXTIN(1'hx),
.SIGNEXTOUT(_0_)
);
endmodule
EOT
techmap -wb -D EQUIV -autoproc -map +/ice40/cells_sim.v
equiv_make top ref equiv
select -assert-any -module equiv t:$equiv
equiv_induct
equiv_status -assert