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scoreboard optimization - using writeback's end-of-packet status

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This commit is contained in:
Blaise Tine
2020-12-30 06:47:56 -08:00
parent e431162347
commit 9f128085d5
15 changed files with 76 additions and 57 deletions
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6
hw/rtl/VX_issue.v
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@@ -27,6 +27,7 @@ module VX_issue #(
VX_gpr_req_if gpr_req_if();
VX_gpr_rsp_if gpr_rsp_if();
wire [`NW_BITS-1:0] deq_wid_next;
wire scoreboard_delay;
VX_ibuffer #(
@@ -36,7 +37,8 @@ module VX_issue #(
.reset (reset),
.freeze (1'b0),
.ibuf_enq_if (decode_if),
.ibuf_deq_if (ibuf_deq_if)
.ibuf_deq_if (ibuf_deq_if),
.deq_wid_next (deq_wid_next)
);
VX_scoreboard #(
@@ -46,6 +48,7 @@ module VX_issue #(
.reset (reset),
.ibuf_deq_if (ibuf_deq_if),
.writeback_if (writeback_if),
.deq_wid_next (deq_wid_next),
.delay (scoreboard_delay)
);
@@ -120,6 +123,7 @@ module VX_issue #(
`SCOPE_ASSIGN (writeback_pc, writeback_if.PC);
`SCOPE_ASSIGN (writeback_rd, writeback_if.rd);
`SCOPE_ASSIGN (writeback_data, writeback_if.data);
`SCOPE_ASSIGN (writeback_eop, writeback_if.eof);
`ifdef PERF_ENABLE
reg [63:0] perf_ibf_stalls;