Additional trace signals

core/decode.sv

@@ -61,6 +61,9 @@ module decode(
         output logic tr_no_id_stall,
         output logic tr_no_instruction_stall,
         output logic tr_other_stall,
+        output logic tr_branch_operand_stall,
+        output logic tr_alu_operand_stall,
+        output logic tr_ls_operand_stall,
 
         output logic tr_instruction_issued_dec,
         output logic [31:0] tr_instruction_pc_dec,
@@ -435,6 +438,9 @@ module decode(
         assign tr_no_id_stall = (|issue_ready) & (fb_valid & ~ti.id_available & ~gc_issue_hold & ~gc_fetch_flush) & load_store_operands_ready;
         assign tr_no_instruction_stall = ~fb_valid;
         assign tr_other_stall = fb_valid & ~instruction_issued & ~(tr_operand_stall | tr_unit_stall | tr_no_id_stall | tr_no_instruction_stall) & ~gc_fetch_flush;
+        assign tr_branch_operand_stall = tr_operand_stall & new_request[BRANCH_UNIT_ID];
+        assign tr_alu_operand_stall = tr_operand_stall & new_request[ALU_UNIT_WB_ID] & ~new_request[BRANCH_UNIT_ID];
+        assign tr_ls_operand_stall = tr_operand_stall & new_request[LS_UNIT_WB_ID];
 
         assign tr_instruction_issued_dec = instruction_issued;
         assign tr_instruction_pc_dec = fb.pc;

core/taiga.sv

@@ -120,6 +120,9 @@ module taiga (
     logic tr_no_id_stall;
     logic tr_no_instruction_stall;
     logic tr_other_stall;
+    logic tr_branch_operand_stall;
+    logic tr_alu_operand_stall;
+    logic tr_ls_operand_stall;
 
     logic tr_instruction_issued_dec;
     logic [31:0] tr_instruction_pc_dec;
@@ -215,6 +218,9 @@ module taiga (
             tr.events.no_instruction_stall <= tr_no_instruction_stall;
             tr.events.other_stall <= tr_other_stall;
             tr.events.instruction_issued_dec <= tr_instruction_issued_dec;
+            tr.events.branch_operand_stall <= tr_branch_operand_stall;
+            tr.events.alu_operand_stall <= tr_alu_operand_stall;
+            tr.events.ls_operand_stall <= tr_ls_operand_stall;
             tr.events.branch_misspredict <= tr_branch_misspredict;
             tr.events.return_misspredict <= tr_return_misspredict;
             tr.events.wb_mux_contention <= tr_wb_mux_contention;

core/taiga_types.sv

@@ -450,6 +450,9 @@ package taiga_types;
         logic no_instruction_stall;
         logic other_stall;
         logic instruction_issued_dec;
+        logic branch_operand_stall;
+        logic alu_operand_stall;
+        logic ls_operand_stall;
 
         //Branch Unit
         logic branch_misspredict;

test_benches/verilator/TaigaTracer.h

@@ -43,6 +43,9 @@ static const char * const eventNames[] = {
     "no_instruction_stall",
     "other_stall",
     "instruction_issued_dec",
+    "branch_operand_stall",
+    "alu_operand_stall",
+    "ls_operand_stall",
     "branch_misspredict",
     "return_misspredict",
     "wb_mux_contention",