PATCH: PR lto/42613: -save-temps doesn't work completely for -fwhopr

[H.J. Lu]

Hi,

This patch sets WPA_SAVE_LTRANS if -save-temps is passed to gcc with
LTO. OK for trunk?

Thanks.



H.J.
---
2010-01-04  H.J. Lu  <hongjiu.lu@intel.com>
 
	PR lto/42613
	* collect2.c (maybe_run_lto_and_relink): Set WPA_SAVE_LTRANS if
	-save-temps is passed to gcc.

diff --git a/gcc/collect2.c b/gcc/collect2.c
index 6e25b1e..332a062 100644
--- a/gcc/collect2.c
+++ b/gcc/collect2.c
@@ -934,6 +934,7 @@ maybe_run_lto_and_relink (char **lto_ld_argv, char **object_lst,
       char *lto_wrapper = getenv ("COLLECT_LTO_WRAPPER");
       struct pex_obj *pex;
       const char *prog = "lto-wrapper";
+      bool save_temps = false;
 
       if (!lto_wrapper)
 	fatal ("COLLECT_LTO_WRAPPER must be set.");
@@ -977,6 +978,9 @@ maybe_run_lto_and_relink (char **lto_ld_argv, char **object_lst,
         {
           const char *s = extract_string (&cp);
 
+	  if (strncmp (s, "-save-temps", 11) == 0)
+	    save_temps = true;
+
 	  /* Pass the option or argument to the wrapper.  */
 	  *lto_c_ptr++ = xstrdup (s);
         }
@@ -992,7 +996,7 @@ maybe_run_lto_and_relink (char **lto_ld_argv, char **object_lst,
       *lto_c_ptr = NULL;
 
       /* Save intermediate WPA files in lto1 if debug.  */
-      if (debug)
+      if (debug || save_temps)
 	putenv (xstrdup ("WPA_SAVE_LTRANS=1"));
 
       /* Run the LTO back end.  */