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removing pipeline additional registers

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This commit is contained in:
Blaise Tine
2020-08-25 14:02:35 -07:00
parent efbe4a07ef
commit b211b29670
9 changed files with 74 additions and 91 deletions
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26
hw/rtl/VX_instr_demux.v
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@@ -17,12 +17,6 @@ module VX_instr_demux (
VX_fpu_req_if fpu_req_if,
VX_gpu_req_if gpu_req_if
);
// ALU unit
wire alu_req_valid = execute_if.valid && (execute_if.ex_type == `EX_ALU);
wire alu_req_ready;
wire is_br_op = `IS_BR_MOD(execute_if.op_mod);
wire [`NT_BITS-1:0] tid;
VX_priority_encoder #(
.N(`NUM_THREADS)
@@ -32,15 +26,23 @@ module VX_instr_demux (
`UNUSED_PIN (valid_out)
);
wire [31:0] next_PC = execute_if.curr_PC + 4;
// ALU unit
wire alu_req_valid = execute_if.valid && (execute_if.ex_type == `EX_ALU);
wire alu_req_ready;
wire is_br_op = `IS_BR_MOD(execute_if.op_mod);
VX_skid_buffer #(
.DATAW (`NW_BITS + `NUM_THREADS + 32 + `ALU_BR_BITS + 1 + 32 + 1 + 1 + `NR_BITS + 1 + `NT_BITS)
.DATAW (`NW_BITS + `NUM_THREADS + 32 + 32 + `ALU_BR_BITS + 1 + 32 + 1 + 1 + `NR_BITS + 1 + `NT_BITS)
) alu_reg (
.clk (clk),
.reset (reset),
.ready_in (alu_req_ready),
.valid_in (alu_req_valid),
.data_in ({execute_if.wid, execute_if.thread_mask, execute_if.curr_PC, `ALU_BR_OP(execute_if.op_type), is_br_op, execute_if.imm, execute_if.rs1_is_PC, execute_if.rs2_is_imm, execute_if.rd, execute_if.wb, tid}),
.data_out ({alu_req_if.wid, alu_req_if.thread_mask, alu_req_if.curr_PC, alu_req_if.op_type, alu_req_if.is_br_op, alu_req_if.imm, alu_req_if.rs1_is_PC, alu_req_if.rs2_is_imm, alu_req_if.rd, alu_req_if.wb, alu_req_if.tid}),
.data_in ({execute_if.wid, execute_if.thread_mask, execute_if.curr_PC, next_PC, `ALU_BR_OP(execute_if.op_type), is_br_op, execute_if.imm, execute_if.rs1_is_PC, execute_if.rs2_is_imm, execute_if.rd, execute_if.wb, tid}),
.data_out ({alu_req_if.wid, alu_req_if.thread_mask, alu_req_if.curr_PC, alu_req_if.next_PC, alu_req_if.op_type, alu_req_if.is_br_op, alu_req_if.imm, alu_req_if.rs1_is_PC, alu_req_if.rs2_is_imm, alu_req_if.rd, alu_req_if.wb, alu_req_if.tid}),
.ready_out (alu_req_if.ready),
.valid_out (alu_req_if.valid)
);
@@ -196,14 +198,14 @@ module VX_instr_demux (
wire gpu_req_ready;
VX_skid_buffer #(
.DATAW (`NW_BITS + `NUM_THREADS + 32 + `GPU_BITS + `NR_BITS + 1)
.DATAW (`NW_BITS + `NUM_THREADS + 32 + 32 + `GPU_BITS + `NR_BITS + 1)
) gpu_reg (
.clk (clk),
.reset (reset),
.ready_in (gpu_req_ready),
.valid_in (gpu_req_valid),
.data_in ({execute_if.wid, execute_if.thread_mask, execute_if.curr_PC, `GPU_OP(execute_if.op_type), execute_if.rd, execute_if.wb}),
.data_out ({gpu_req_if.wid, gpu_req_if.thread_mask, gpu_req_if.curr_PC, gpu_req_if.op_type, gpu_req_if.rd, gpu_req_if.wb}),
.data_in ({execute_if.wid, execute_if.thread_mask, execute_if.curr_PC, next_PC, `GPU_OP(execute_if.op_type), execute_if.rd, execute_if.wb}),
.data_out ({gpu_req_if.wid, gpu_req_if.thread_mask, gpu_req_if.curr_PC, gpu_req_if.next_PC, gpu_req_if.op_type, gpu_req_if.rd, gpu_req_if.wb}),
.ready_out (gpu_req_if.ready),
.valid_out (gpu_req_if.valid)
);