ld: Add -plugin-save-temps

Add -plugin-save-temps to store plugin intermediate files permanently.
It can be used to exam the final input object files generated from IR
inputs.

	* NEWS: Mention -plugin-save-temps.
	* ld.h (ld_config_type): Add plugin_save_temps.
	* ld.texi: Document -plugin-save-temps.
	* ldlex.h (option_values): Add OPTION_PLUGIN_SAVE_TEMPS.
	* lexsup.c (ld_options): Add -plugin-save-temps.
	(parse_args): Handle OPTION_PLUGIN_SAVE_TEMPS.
	* plugin.c (plugin_call_cleanup): Don't call plugin
	cleanup_handler for -plugin-save-temps.

ld/NEWS

@@ -1,5 +1,7 @@
 -*- text -*-
 
+* Add -plugin-save-temps to store plugin intermediate files permanently.
+
 Changes in 2.42:
 
 * Add -z mark-plt/-z nomark-plt options to x86-64 ELF linker to mark PLT

ld/ld.h

@@ -300,6 +300,9 @@ typedef struct
   /* The size of the hash table to use.  */
   unsigned long hash_table_size;
 
+  /* If set, store plugin intermediate files permanently.  */
+  bool plugin_save_temps;
+
   /* If set, print discarded sections in map file output.  */
   bool print_map_discarded;
 

ld/ld.texi

@@ -1140,6 +1140,10 @@ Omit debugger symbol information (but not all symbols) from the output file.
 Omit (or do not omit) global symbols defined in discarded sections.
 Enabled by default.
 
+@kindex -plugin-save-temps
+@item -plugin-save-temps
+Store the plugin ``temporary'' intermediate files permanently.
+
 @kindex -t
 @kindex --trace
 @cindex input files, displaying

ld/ldlex.h

@@ -146,6 +146,7 @@ enum option_values
 #if BFD_SUPPORTS_PLUGINS
   OPTION_PLUGIN,
   OPTION_PLUGIN_OPT,
+  OPTION_PLUGIN_SAVE_TEMPS,
 #endif /* BFD_SUPPORTS_PLUGINS */
   OPTION_DEFAULT_SCRIPT,
   OPTION_PRINT_OUTPUT_FORMAT,

ld/lexsup.c

@@ -187,6 +187,9 @@ static const struct ld_option ld_options[] =
     '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
   { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
     '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH },
+  { {"plugin-save-temps", no_argument, NULL, OPTION_PLUGIN_SAVE_TEMPS},
+    '\0', NULL, N_("Store plugin intermediate files permanently"),
+    ONE_DASH },
   { {"flto", optional_argument, NULL, OPTION_IGNORE},
     '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
     ONE_DASH },
@@ -1211,6 +1214,9 @@ parse_args (unsigned argc, char **argv)
 	  if (plugin_opt_plugin_arg (optarg))
 	    einfo (_("%F%P: bad -plugin-opt option\n"));
 	  break;
+	case OPTION_PLUGIN_SAVE_TEMPS:
+	  config.plugin_save_temps = true;
+	  break;
 #endif /* BFD_SUPPORTS_PLUGINS */
 	case 'q':
 	  link_info.emitrelocations = true;

ld/plugin.c

@@ -1366,6 +1366,8 @@ plugin_call_cleanup (void)
   while (curplug)
     {
       if (curplug->cleanup_handler && !curplug->cleanup_done)
+	{
+	  if (!config.plugin_save_temps)
 	    {
 	      enum ld_plugin_status rv;
 	      curplug->cleanup_done = true;
@@ -1375,6 +1377,7 @@ plugin_call_cleanup (void)
 	      if (rv != LDPS_OK)
 		info_msg (_("%P: %s: error in plugin cleanup: %d (ignored)\n"),
 			  curplug->name, rv);
+	    }
 	  dlclose (curplug->dlhandle);
 	}
       curplug = curplug->next;