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.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@182370 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 13 insertions, 2 deletions

diff --git a/gcc/lto-wrapper.c b/gcc/lto-wrapper.c
index 5fb37624810..1cc7bfb843d 100644
--- a/gcc/lto-wrapper.c
+++ b/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;