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minor optimization

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This commit is contained in:
Blaise Tine
2021-02-18 16:03:16 -08:00
parent 31b3e380dc
commit 143319d557
2 changed files with 50 additions and 38 deletions
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25
hw/rtl/libs/VX_priority_encoder.v
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@@ -40,7 +40,8 @@ module VX_priority_encoder #(
end
VX_onehot_encoder #(
.N (N)
.N (N),
.REVERSE (REVERSE)
) b (
.data_in (onehot),
.data_out (index),
@@ -51,15 +52,25 @@ module VX_priority_encoder #(
reg [N-1:0] onehot_r;
reg [LN-1:0] index_r;
always @(*) begin
index_r = 'x;
onehot_r = 0;
for (integer i = 0; i < N; i++) begin
if (data_in[i]) begin
index_r = LN'(i);
onehot_r[i] = 1'b1;
break;
if (REVERSE) begin
for (integer i = N-1; i >= 0; i--) begin
if (data_in[i]) begin
index_r = LN'(i);
onehot_r[i] = 1'b1;
break;
end
end
end else begin
for (integer i = 0; i < N; i++) begin
if (data_in[i]) begin
index_r = LN'(i);
onehot_r[i] = 1'b1;
break;
end
end
end
end