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gpr pipeline optimization

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This commit is contained in:
Blaise Tine
2020-08-01 12:38:30 -04:00
parent 31ee824862
commit b8cd3b0b28
17 changed files with 121 additions and 140 deletions
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11
hw/rtl/VX_issue.v
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@@ -24,10 +24,11 @@ module VX_issue #(
assign gpr_read_if.rs2 = decode_if.rs2;
assign gpr_read_if.rs3 = decode_if.rs3;
assign gpr_read_if.use_rs3 = decode_if.use_rs3;
assign gpr_read_if.out_ready = decode_if.ready;
wire [`ISTAG_BITS-1:0] issue_tag, issue_tmp_tag;
wire gpr_busy = ~gpr_read_if.ready;
wire gpr_busy = ~gpr_read_if.in_ready;
wire alu_busy = ~alu_req_if.ready;
wire lsu_busy = ~lsu_req_if.ready;
wire csr_busy = ~csr_req_if.ready;
@@ -63,7 +64,7 @@ module VX_issue #(
);
VX_decode_if decode_tmp_if();
VX_gpr_read_if gpr_data_tmp_if();
VX_gpr_read_if gpr_read_tmp_if();
wire stall = ~alu_req_if.ready || ~decode_if.ready;
wire flush = alu_req_if.ready && ~decode_if.ready;
@@ -75,13 +76,13 @@ module VX_issue #(
.reset (reset),
.stall (stall),
.flush (flush),
.in ({decode_if.valid, issue_tag, decode_if.warp_num, decode_if.thread_mask, decode_if.curr_PC, decode_if.next_PC, decode_if.rd, decode_if.rs1, decode_if.rs2, decode_if.imm, decode_if.rs1_is_PC, decode_if.rs2_is_imm, decode_if.ex_type, decode_if.ex_op, decode_if.wb, decode_if.rs3, decode_if.use_rs3, decode_if.frm, gpr_read_if.rs1_data, gpr_read_if.rs2_data, gpr_read_if.rs3_data}),
.out ({decode_tmp_if.valid, issue_tmp_tag, decode_tmp_if.warp_num, decode_tmp_if.thread_mask, decode_tmp_if.curr_PC, decode_tmp_if.next_PC, decode_tmp_if.rd, decode_tmp_if.rs1, decode_tmp_if.rs2, decode_tmp_if.imm, decode_tmp_if.rs1_is_PC, decode_tmp_if.rs2_is_imm, decode_tmp_if.ex_type, decode_tmp_if.ex_op, decode_tmp_if.wb, decode_tmp_if.rs3, decode_tmp_if.use_rs3, decode_tmp_if.frm, gpr_data_tmp_if.rs1_data, gpr_data_tmp_if.rs2_data, gpr_data_tmp_if.rs3_data})
.in ({decode_if.valid, issue_tag, decode_if.warp_num, decode_if.thread_mask, decode_if.curr_PC, decode_if.next_PC, decode_if.rd, decode_if.rs1, decode_if.rs2, decode_if.imm, decode_if.rs1_is_PC, decode_if.rs2_is_imm, decode_if.ex_type, decode_if.ex_op, decode_if.wb, decode_if.rs3, decode_if.use_rs3, decode_if.frm, gpr_read_if.rs1_data, gpr_read_if.rs2_data, gpr_read_if.rs3_data}),
.out ({decode_tmp_if.valid, issue_tmp_tag, decode_tmp_if.warp_num, decode_tmp_if.thread_mask, decode_tmp_if.curr_PC, decode_tmp_if.next_PC, decode_tmp_if.rd, decode_tmp_if.rs1, decode_tmp_if.rs2, decode_tmp_if.imm, decode_tmp_if.rs1_is_PC, decode_tmp_if.rs2_is_imm, decode_tmp_if.ex_type, decode_tmp_if.ex_op, decode_tmp_if.wb, decode_tmp_if.rs3, decode_tmp_if.use_rs3, decode_tmp_if.frm, gpr_read_tmp_if.rs1_data, gpr_read_tmp_if.rs2_data, gpr_read_tmp_if.rs3_data})
);
VX_issue_demux issue_demux (
.decode_if (decode_tmp_if),
.gpr_read_if (gpr_data_tmp_if),
.gpr_read_if (gpr_read_tmp_if),
.issue_tag (issue_tmp_tag),
.alu_req_if (alu_req_if),
.lsu_req_if (lsu_req_if),