lto-wrapper.c (run_gcc): In non-parallel mode remove ltrans inputs immediately…

lto-wrapper.c (run_gcc): In non-parallel mode remove ltrans inputs immediately after processing them.

2011-12-15  Richard Guenther  <rguenther@suse.de>

	* lto-wrapper.c (run_gcc): In non-parallel mode remove
	ltrans inputs immediately after processing them.  In parallel
	mode truncate the ltrans inputs in the make rule that processes
	them if temporary files are not to be preserved.

From-SVN: r182370

gcc/ChangeLog

+2011-12-15  Richard Guenther  <rguenther@suse.de>
+
+	* lto-wrapper.c (run_gcc): In non-parallel mode remove
+	ltrans inputs immediately after processing them.  In parallel
+	mode truncate the ltrans inputs in the make rule that processes
+	them if temporary files are not to be preserved.
+
 2011-12-15  Anatoly Sokolov  <aesok@post.ru>
 
 	* config/arm/arm.h (REGISTER_MOVE_COST, MEMORY_MOVE_COST): Remove.

gcc/lto-wrapper.c

@@ -811,9 +811,19 @@ cont:
 	      for (j = 1; new_argv[j] != NULL; ++j)
 		fprintf (mstream, " '%s'", new_argv[j]);
 	      fprintf (mstream, "\n");
+	      /* If we are not preserving the ltrans input files then
+	         truncate them as soon as we have processed it.  This
+		 reduces temporary disk-space usage.  */
+	      if (! debug)
+		fprintf (mstream, "\t@-touch -r %s %s.tem > /dev/null 2>&1 "
+			 "&& mv %s.tem %s\n",
+			 input_name, input_name, input_name, input_name); 
 	    }
 	  else
-	    fork_execute (CONST_CAST (char **, new_argv));
+	    {
+	      fork_execute (CONST_CAST (char **, new_argv));
+	      maybe_unlink_file (input_name);
+	    }
 
 	  output_names[i] = output_name;
 	}
@@ -851,12 +861,13 @@ cont:
 	  collect_wait (new_argv[0], pex);
 	  maybe_unlink_file (makefile);
 	  makefile = NULL;
+	  for (i = 0; i < nr; ++i)
+	    maybe_unlink_file (input_names[i]);
 	}
       for (i = 0; i < nr; ++i)
 	{
 	  fputs (output_names[i], stdout);
 	  putc ('\n', stdout);
-	  maybe_unlink_file (input_names[i]);
 	  free (input_names[i]);
 	}
       nr = 0;