增加其他情况的实验

2_vcs_comp/Makefile

@@ -1,4 +1,17 @@
 .PHONY: clean comp all
+LAB = 1
+ifeq ($(LAB), 1)
+	TB_FILE = ./rtl/testbench1.sv
+else ifeq ($(LAB), 2)
+	TB_FILE = ./rtl/testbench2.sv
+else ifeq ($(LAB), 3)
+	TB_FILE = ./rtl/testbench3.sv
+else ifeq ($(LAB), 4)
+	TB_FILE = ./rtl/testbench4.sv
+else
+	TB_FILE = ./rtl/testbench1.sv
+endif
+
 GENLIB = 1
 ifeq ($(GENLIB), 1)
 	COMP_TB_ARG = +define+TEST1
@@ -28,7 +41,7 @@ endif
 comp_tb:
 	- vlogan -full64 +v2k -sverilog \
 		-l compile_tb.log -timescale=1ns/1ps \
-		-ntb_opts uvm-1.2 -f ./tb_flist.f ./partcfg.sv -work TB $(COMP_TB_ARG)
+		-ntb_opts uvm-1.2 $(TB_FILE) ./partcfg.sv -work TB $(COMP_TB_ARG)
 
 comp_elab:
 	- vcs -full64 -sverilog -LDFLAGS -Wl,--no-as-need \

2_vcs_comp/ReadMe.md

@@ -88,3 +88,17 @@ Note-[PC_RECOMPILE] Recompiling partition
 ```
 
 检查log可以发现，穿层信号变化涉及到的模块`counter_b、counter_c`都无法reuse。
+
+## 结论
+
+| 序号 | 条件                                                  | 现象    | 结论                         | 备注 |
+| ---- | ----------------------------------------------------- | ------- | ---------------------------- | ---- |
+| 1    | 第一次：引用a.name； 第二次引用a.name/b.name/c.name； | b/c重编 | 不同的模块，增加的引用会重编 |      |
+| 2    | 第一次：引用a.name；第二次引用a.age；                 | a重编   | 同一个模块，不同引用也会重编 |      |
+| 3    | 第一次：引用a.name/a.age；第二次引用a.name；          | a重编   | 同一个模块，减少引用也会重编 |      |
+| 4    | 第一次：引用a.name；第二次引用a.name/a.age；          | a重编   | 同一个模块，增加引用也会重编 |      |
+
+⚠：只要模块的穿层引用发生变化，就会导致该模块重编。
+
+✍官方文档VCSLCAFeatures.pdf第408页，也有类似表述：Any change in XMRs, trigger recompilation of the referee partition.  
+

2_vcs_comp/rtl/counter_a.sv

@@ -17,4 +17,5 @@
 //===========================================================================
 module counter_a;
     string name = "counter_a";
+    string age  = "10";
 endmodule

2_vcs_comp/rtl/counter_b.sv

@@ -17,4 +17,5 @@
 //===========================================================================
 module counter_b;
     string name = "counter_b";
+    string age  = "11";
 endmodule

2_vcs_comp/rtl/counter_c.sv

@@ -17,4 +17,5 @@
 //===========================================================================
 module counter_c;
     string name = "counter_c";
+    string age  = "12";
 endmodule

2_vcs_comp/rtl/testbench1.sv

@@ -19,16 +19,18 @@
 import uvm_pkg::*;
 module testbench;
     top dut_top();
-`ifdef TEST2
-    string version = "test2";
-`else
+`ifdef TEST1
     string version = "test1";
+`else
+    string version = "test2";
 `endif
 
     initial begin
         `uvm_info("testbench::", $sformatf("start %s", version), UVM_LOW)
+    `ifdef TEST1
+        $display("sub_module name = %s", dut_top.a.name);
+    `else
         $display("sub_module name = %s", dut_top.a.name);
-    `ifdef TEST2
         $display("sub_module name = %s", dut_top.b.name);
         $display("sub_module name = %s", dut_top.c.name);
     `endif

2_vcs_comp/rtl/testbench2.sv

@@ -0,0 +1,37 @@
+//=========================================================================== 
+// Organization : Individual Developer 
+// Filename     : testbench.sv
+// Author       : Feng Bohan
+// Create Time  : 20:06:44 2024-12-02
+// Last Modified: 20:12:07 2024-12-02
+// Abstract     :  
+//--------------------------------------------------------------------------
+// Description:
+// 
+//--------------------------------------------------------------------------
+// Modification History:
+//--------------------------------------------------------------------------
+// Rev      Date        Who         Description
+// ---      ----        ---         -----------
+// 0.0.01   2024-12-02  Feng Bohan  initial version
+//===========================================================================
+`include "uvm_macros.svh"
+import uvm_pkg::*;
+module testbench;
+    top dut_top();
+`ifdef TEST1
+    string version = "test1";
+`else
+    string version = "test2";
+`endif
+
+    initial begin
+        `uvm_info("testbench::", $sformatf("start %s", version), UVM_LOW)
+    `ifdef TEST1
+        $display("sub_module name = %s", dut_top.a.name);
+    `else
+        $display("sub_module age  = %s", dut_top.a.age);
+    `endif
+        `uvm_info("testbench::", $sformatf("finish %s", version), UVM_LOW)
+    end
+endmodule

2_vcs_comp/rtl/testbench3.sv

@@ -0,0 +1,38 @@
+//=========================================================================== 
+// Organization : Individual Developer 
+// Filename     : testbench.sv
+// Author       : Feng Bohan
+// Create Time  : 20:06:44 2024-12-02
+// Last Modified: 20:12:07 2024-12-02
+// Abstract     :  
+//--------------------------------------------------------------------------
+// Description:
+// 
+//--------------------------------------------------------------------------
+// Modification History:
+//--------------------------------------------------------------------------
+// Rev      Date        Who         Description
+// ---      ----        ---         -----------
+// 0.0.01   2024-12-02  Feng Bohan  initial version
+//===========================================================================
+`include "uvm_macros.svh"
+import uvm_pkg::*;
+module testbench;
+    top dut_top();
+`ifdef TEST1
+    string version = "test1";
+`else
+    string version = "test2";
+`endif
+
+    initial begin
+        `uvm_info("testbench::", $sformatf("start %s", version), UVM_LOW)
+    `ifdef TEST1
+        $display("sub_module name = %s", dut_top.a.name);
+        $display("sub_module age  = %s", dut_top.a.age);
+    `else
+        $display("sub_module name = %s", dut_top.a.name);
+    `endif
+        `uvm_info("testbench::", $sformatf("finish %s", version), UVM_LOW)
+    end
+endmodule

2_vcs_comp/rtl/testbench4.sv

@@ -0,0 +1,38 @@
+//=========================================================================== 
+// Organization : Individual Developer 
+// Filename     : testbench.sv
+// Author       : Feng Bohan
+// Create Time  : 20:06:44 2024-12-02
+// Last Modified: 20:12:07 2024-12-02
+// Abstract     :  
+//--------------------------------------------------------------------------
+// Description:
+// 
+//--------------------------------------------------------------------------
+// Modification History:
+//--------------------------------------------------------------------------
+// Rev      Date        Who         Description
+// ---      ----        ---         -----------
+// 0.0.01   2024-12-02  Feng Bohan  initial version
+//===========================================================================
+`include "uvm_macros.svh"
+import uvm_pkg::*;
+module testbench;
+    top dut_top();
+`ifdef TEST1
+    string version = "test1";
+`else
+    string version = "test2";
+`endif
+
+    initial begin
+        `uvm_info("testbench::", $sformatf("start %s", version), UVM_LOW)
+    `ifdef TEST1
+        $display("sub_module name = %s", dut_top.a.name);
+    `else
+        $display("sub_module name = %s", dut_top.a.name);
+        $display("sub_module age  = %s", dut_top.a.age);
+    `endif
+        `uvm_info("testbench::", $sformatf("finish %s", version), UVM_LOW)
+    end
+endmodule

2_vcs_comp/tb_flist.f

@@ -1,2 +0,0 @@
-./rtl/testbench.sv
-