Add --coverage-per-instance

src/V3EmitCMain.cpp

@@ -157,6 +157,9 @@ private:
 
         if (v3Global.opt.coverage()) {
             puts("// Write coverage data (since Verilated with --coverage)\n");
+            if (v3Global.opt.coveragePerInstance()) {
+                puts("contextp->coveragep()->forcePerInstance(true);\n");
+            }
             puts("contextp->coveragep()->write();\n");
             puts("\n");
         }