scoreboard optimization & profiling

hw/rtl/core/VX_schedule.sv

@@ -19,6 +19,10 @@ module VX_schedule import VX_gpu_pkg::*; #(
     input wire              clk,
     input wire              reset,
 
+`ifdef PERF_ENABLE
+    VX_pipeline_perf_if.schedule perf_schedule_if,
+`endif
+
     // configuration
     input base_dcrs_t       base_dcrs,
 
@@ -376,4 +380,21 @@ module VX_schedule import VX_gpu_pkg::*; #(
     end
     `RUNTIME_ASSERT(timeout_ctr < `STALL_TIMEOUT, ("%t: *** core%0d-scheduler-timeout: stalled_warps=%b", $time, CORE_ID, stalled_warps));
 
+`ifdef PERF_ENABLE    
+    reg [`PERF_CTR_BITS-1:0] perf_sched_stalls;
+    reg [`PERF_CTR_BITS-1:0] perf_fetch_stalls;
+    always @(posedge clk) begin
+        if (reset) begin
+            perf_sched_stalls <= '0;
+            perf_fetch_stalls <= '0;            
+        end else begin
+            perf_sched_stalls <= perf_sched_stalls + `PERF_CTR_BITS'(!schedule_valid);
+            perf_fetch_stalls <= perf_fetch_stalls + `PERF_CTR_BITS'(schedule_if.valid && !schedule_if.ready);            
+        end
+    end
+
+    assign perf_schedule_if.sched_stalls = perf_sched_stalls;
+    assign perf_schedule_if.fetch_stalls = perf_fetch_stalls;    
+`endif
+
 endmodule