Vortex 2.0 changes:

+ Microarchitecture optimizations
+ 64-bit support
+ Xilinx FPGA support
+ LLVM-16 support
+ Refactoring and quality control fixes

hw/rtl/core/VX_ibuffer.sv

@@ -0,0 +1,73 @@
+// Copyright © 2019-2023
+// 
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+`include "VX_define.vh"
+
+module VX_ibuffer import VX_gpu_pkg::*; #(
+    parameter CORE_ID = 0
+) (
+    input wire          clk,
+    input wire          reset,
+
+    // inputs
+    VX_decode_if.slave  decode_if,
+
+    // outputs
+    VX_ibuffer_if.master ibuffer_if [`ISSUE_WIDTH]
+);
+    `UNUSED_PARAM (CORE_ID)
+    localparam ISW_WIDTH  = `LOG2UP(`ISSUE_WIDTH);
+    localparam DATAW = `UUID_WIDTH + ISSUE_WIS_W + `NUM_THREADS + `XLEN + 1 + `EX_BITS + `INST_OP_BITS + `INST_MOD_BITS + 1 + 1 + `XLEN + (`NR_BITS * 4);
+    
+    wire [`ISSUE_WIDTH-1:0] ibuf_ready_in;
+
+    wire [ISW_WIDTH-1:0] decode_isw = wid_to_isw(decode_if.data.wid);
+    wire [ISSUE_WIS_W-1:0] decode_wis = wid_to_wis(decode_if.data.wid);
+    
+    assign decode_if.ready = ibuf_ready_in[decode_isw];
+
+    for (genvar i = 0; i < `ISSUE_WIDTH; ++i) begin
+        VX_elastic_buffer #(
+            .DATAW   (DATAW),
+            .SIZE    (`IBUF_SIZE),
+            .OUT_REG (1)
+        ) instr_buf (
+            .clk      (clk),
+            .reset    (reset),
+            .valid_in (decode_if.valid && decode_isw == i),
+            .ready_in (ibuf_ready_in[i]),
+            .data_in  ({
+                decode_if.data.uuid,
+                decode_wis,
+                decode_if.data.tmask,
+                decode_if.data.ex_type,
+                decode_if.data.op_type,
+                decode_if.data.op_mod,
+                decode_if.data.wb,
+                decode_if.data.use_PC,
+                decode_if.data.use_imm,
+                decode_if.data.PC,
+                decode_if.data.imm,
+                decode_if.data.rd, 
+                decode_if.data.rs1, 
+                decode_if.data.rs2, 
+                decode_if.data.rs3}),
+            .data_out(ibuffer_if[i].data),
+            .valid_out (ibuffer_if[i].valid),
+            .ready_out(ibuffer_if[i].ready)
+        );        
+
+        assign decode_if.ibuf_pop[i] = ibuffer_if[i].valid && ibuffer_if[i].ready;
+    end
+
+endmodule