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minor update

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This commit is contained in:
Blaise Tine
2021-07-03 04:47:19 -07:00
parent 360f8e4e37
commit dc34c5c5bd
5 changed files with 29 additions and 51 deletions
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13
hw/rtl/VX_ibuffer.v
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@@ -110,10 +110,11 @@ module VX_ibuffer #(
// schedule the next instruction to issue
always @(*) begin
deq_valid_n = enq_fire;
deq_wid_n = decode_if.wid;
deq_instr_n = q_data_in;
if (num_warps > 1) begin
deq_valid_n = 1;
deq_wid_n = 'x;
deq_instr_n = 'x;
for (integer i = `NUM_WARPS-1; i >= 0; --i) begin
if (schedule_table[i]) begin
deq_wid_n = `NW_BITS'(i);
@@ -124,17 +125,12 @@ module VX_ibuffer #(
deq_valid_n = 1;
deq_wid_n = deq_wid;
deq_instr_n = deq_fire ? q_data_prev[deq_wid] : q_data_out[deq_wid];
end else begin
deq_valid_n = enq_fire;
deq_wid_n = decode_if.wid;
deq_instr_n = q_data_in;
end
end
// do round-robin scheduling with multiple active warps
always @(*) begin
if (1 == $countones(schedule_table)
|| (num_warps < 2)) begin
if ($countones(schedule_table) <= 1) begin
schedule_table_n = valid_table_n;
end else begin
schedule_table_n = schedule_table;
@@ -150,6 +146,7 @@ module VX_ibuffer #(
valid_table <= 0;
deq_valid <= 0;
num_warps <= 0;
schedule_table <= 0;
end else begin
valid_table <= valid_table_n;
deq_valid <= deq_valid_n;