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pipeline optimization: fixed GPR fanout delay to execute units

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This commit is contained in:
Blaise Tine
2020-11-07 02:01:21 -08:00
parent af2bb3b789
commit b14007f930
13 changed files with 155 additions and 151 deletions
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18
hw/rtl/VX_gpr_bypass.v
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@@ -40,27 +40,25 @@ module VX_gpr_bypass #(
buffer2 <= 0;
end else begin
delayed_push <= push;
assert(!use_buffer2 || use_buffer);
assert(!use_buffer2 || use_buffer);
if (pop) begin
if (use_buffer) begin
buffer <= buffer2;
use_buffer <= use_buffer2;
use_buffer2 <= 0;
end
buffer <= buffer2;
use_buffer <= use_buffer2;
use_buffer2 <= 0;
end
if (delayed_push) begin
if (use_buffer) begin
assert(!use_buffer2); // queue full!
assert(!use_buffer2); // full!
use_buffer <= 1;
if (pop) begin
buffer <= data_in;
end else begin
buffer2 <= data_in;
use_buffer2 <= 1;
end
use_buffer <= 1;
end
end else if (!pop) begin
buffer <= data_in;
use_buffer <= 1;
use_buffer <= 1;
end
end
end