wu-arch/kernels
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

minor ibuffer critical path optimization.

Browse Source
This commit is contained in:
Blaise Tine
2021-04-19 20:53:13 -07:00
parent 6ef0c99389
commit aff5903a22
10 changed files with 35 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
hw/rtl/VX_ibuffer.v
View File

@@ -7,7 +7,6 @@ module VX_ibuffer #(
input wire reset,
// inputs
input wire freeze, // keep current warp
VX_decode_if ibuf_enq_if,
// outputs
@@ -117,18 +116,9 @@ module VX_ibuffer #(
deq_valid_n = 0;
deq_wid_n = 'x;
deq_instr_n = 'x;
schedule_table_n = 'x;
if ((0 == num_warps)
|| (1 == num_warps && deq_fire && q_alm_empty[deq_wid])) begin
deq_valid_n = enq_fire;
deq_wid_n = ibuf_enq_if.wid;
deq_instr_n = q_data_in;
end else if ((1 == num_warps) || freeze) begin
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
schedule_table_n = 'x;
if (num_warps > 1) begin
deq_valid_n = (| schedule_table);
schedule_table_n = schedule_table;
for (integer i = 0; i < `NUM_WARPS; i++) begin
@@ -139,6 +129,14 @@ module VX_ibuffer #(
break;
end
end
end else if (1 == num_warps && !(deq_fire && q_alm_empty[deq_wid])) begin
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 = ibuf_enq_if.wid;
deq_instr_n = q_data_in;
end
end