fix inverted eval

Author: kkent030315

lld/COFF/Driver.cpp

@@ -2339,7 +2339,7 @@ void LinkerDriver::linkerMain(ArrayRef<const char *> argsArr) {
       args.hasFlag(OPT_highentropyva, OPT_highentropyva_no, true);
 
   // Handle /nodbgdirmerge
-  config->mergeDebugDirectory = args.hasArg(OPT_nodbgdirmerge);
+  config->mergeDebugDirectory = !args.hasArg(OPT_nodbgdirmerge);
 
   if (!config->dynamicBase &&
       (config->machine == ARMNT || isAnyArm64(config->machine)))

lld/COFF/Writer.cpp

@@ -1232,7 +1232,7 @@ void Writer::createMiscChunks() {
   // Create Debug Information Chunks
   if (config->mingw) {
     debugInfoSec = buildidSec;
-  } else if (config->mergeDebugDirectory) {
+  } else if (!config->mergeDebugDirectory) {
     debugInfoSec = cvinfoSec;
   } else {
     debugInfoSec = rdataSec;