[PATCH] Move LTO option processing to common code

[Richard Guenther]

As requested from Joseph this moves LTO option processing to
common code, -flto and -fwhopr are in common.opt already.

Bootstrapped and tested on x86_64-unknown-linux-gnu, ok?

Thanks,
Richard.

2009-10-31  Richard Guenther  <rguenther@suse.de>

	* c-opts.c (c_common_post_options): Move LTO option processing
	code ...
	* opts.c (decode_options): ... here.

	fortran/
	* options.c (gfc_post_options): Rely on common code processing
	LTO options.  Only enable -fwhole-file here.

Index: trunk/gcc/c-opts.c
===================================================================
*** trunk.orig/gcc/c-opts.c	2009-10-31 13:20:18.000000000 +0100
--- trunk/gcc/c-opts.c	2009-10-31 13:24:45.000000000 +0100
*************** c_common_post_options (const char **pfil
*** 1033,1061 ****
    C_COMMON_OVERRIDE_OPTIONS;
  #endif
  
-   if (flag_lto || flag_whopr)
-     {
- #ifdef ENABLE_LTO
-       flag_generate_lto = 1;
- 
-       /* When generating IL, do not operate in whole-program mode.
- 	 Otherwise, symbols will be privatized too early, causing link
- 	 errors later.  */
-       flag_whole_program = 0;
- 
-       /* FIXME lto.  Disable var-tracking until debug information
- 	 is properly handled in free_lang_data.  */
-       flag_var_tracking = 0;
- #else
-       error ("LTO support has not been enabled in this configuration");
- #endif
-     }
- 
-   /* Reconcile -flto and -fwhopr.  Set additional flags as appropriate and
-      check option consistency.  */
-   if (flag_lto && flag_whopr)
-     error ("-flto and -fwhopr are mutually exclusive");
- 
    /* Excess precision other than "fast" requires front-end
       support.  */
    if (c_dialect_cxx ())
--- 1033,1038 ----
Index: trunk/gcc/fortran/options.c
===================================================================
*** trunk.orig/gcc/fortran/options.c	2009-10-31 13:29:42.000000000 +0100
--- trunk/gcc/fortran/options.c	2009-10-31 13:29:45.000000000 +0100
*************** gfc_post_options (const char **pfilename
*** 242,268 ****
    if (flag_whole_program)
      gfc_option.flag_whole_file = 1;
  
    if (flag_lto || flag_whopr)
!     {
! #ifdef ENABLE_LTO
!       flag_generate_lto = 1;
! 
!       /* When generating IL, do not operate in whole-program mode.
! 	 Otherwise, symbols will be privatized too early, causing link
! 	 errors later.  */
!       flag_whole_program = 0;
! 
!       /* But do enable whole-file mode.  */
!       gfc_option.flag_whole_file = 1;
! #else
!       error ("LTO support has not been enabled in this configuration");
! #endif
!     }
! 
!   /* Reconcile -flto and -fwhopr.  Set additional flags as appropriate and
!      check option consistency.  */
!   if (flag_lto && flag_whopr)
!     error ("-flto and -fwhopr are mutually exclusive");
  
    /* -fbounds-check is equivalent to -fcheck=bounds */
    if (flag_bounds_check)
--- 242,250 ----
    if (flag_whole_program)
      gfc_option.flag_whole_file = 1;
  
+   /* Enable whole-file mode if LTO is in effect.  */
    if (flag_lto || flag_whopr)
!     gfc_option.flag_whole_file = 1;
  
    /* -fbounds-check is equivalent to -fcheck=bounds */
    if (flag_bounds_check)
Index: trunk/gcc/opts.c
===================================================================
*** trunk.orig/gcc/opts.c	2009-10-31 13:20:18.000000000 +0100
--- trunk/gcc/opts.c	2009-10-31 13:24:44.000000000 +0100
*************** decode_options (unsigned int argc, const
*** 1117,1122 ****
--- 1117,1144 ----
          PARAM_VALUE (PARAM_STACK_FRAME_GROWTH) = 40;
      }
  
+   if (flag_lto || flag_whopr)
+     {
+ #ifdef ENABLE_LTO
+       flag_generate_lto = 1;
+ 
+       /* When generating IL, do not operate in whole-program mode.
+ 	 Otherwise, symbols will be privatized too early, causing link
+ 	 errors later.  */
+       flag_whole_program = 0;
+ 
+       /* FIXME lto.  Disable var-tracking until debug information
+ 	 is properly handled in free_lang_data.  */
+       flag_var_tracking = 0;
+ #else
+       error ("LTO support has not been enabled in this configuration");
+ #endif
+     }
+ 
+   /* Reconcile -flto and -fwhopr.  Set additional flags as appropriate and
+      check option consistency.  */
+   if (flag_lto && flag_whopr)
+     error ("-flto and -fwhopr are mutually exclusive");
  }
  
  #define LEFT_COLUMN	27