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profiling timing optimization

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minor update

minor update

minor update
This commit is contained in:
Blaise Tine
2023-12-13 18:04:12 -08:00
parent f5f9e3dfdb
commit c6845a4c8d
11 changed files with 64 additions and 56 deletions
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12
hw/rtl/libs/VX_stream_xbar.sv
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@@ -176,8 +176,9 @@ module VX_stream_xbar #(
// we have a collision when there exists a valid transfer with multiple input candicates
// we count the unique duplicates each cycle.
reg [NUM_INPUTS-1:0] per_cycle_collision, per_cycle_collision_r;
wire [`CLOG2(NUM_INPUTS+1)-1:0] collision_count;
reg [PERF_CTR_BITS-1:0] collisions_r;
reg [NUM_INPUTS-1:0] per_cycle_collision;
always @(*) begin
per_cycle_collision = 0;
@@ -190,16 +191,15 @@ module VX_stream_xbar #(
end
end
end
wire [`CLOG2(NUM_INPUTS+1)-1:0] collision_count, collision_count_r;
`POP_COUNT(collision_count, per_cycle_collision);
`BUFFER(collision_count_r, collision_count);
`BUFFER(per_cycle_collision_r, per_cycle_collision);
`POP_COUNT(collision_count, per_cycle_collision_r);
always @(posedge clk) begin
if (reset) begin
collisions_r <= '0;
end else begin
collisions_r <= collisions_r + PERF_CTR_BITS'(collision_count_r);
collisions_r <= collisions_r + PERF_CTR_BITS'(collision_count);
end
end