Restore original scattering when the transform is not legal.

[pf3gnuchains/gcc-fork.git] / gcc / params.c

diff --git a/gcc/params.c b/gcc/params.c
index 72c67be..d7179c0 100644 (file)
--- a/gcc/params.c
+++ b/gcc/params.c
@@ -1,12 +1,13 @@
 /* params.c - Run-time parameters.
-   Copyright (C) 2001 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003, 2004, 2005, 2007, 2008
+   Free Software Foundation, Inc.
    Written by Mark Mitchell <mark@codesourcery.com>.
 
 This file is part of GCC.
 
 GCC is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
 version.
 
 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
@@ -15,14 +16,13 @@ FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 for more details.
 
 You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING.  If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA.
-
-*/
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
 
 #include "config.h"
 #include "system.h"
+#include "coretypes.h"
+#include "tm.h"
 #include "params.h"
 #include "toplev.h"
 
@@ -38,15 +38,11 @@ static size_t num_compiler_params;
 /* Add the N PARAMS to the current list of compiler parameters.  */
 
 void
-add_params (params, n)
-     const param_info params[];
-     size_t n;
+add_params (const param_info params[], size_t n)
 {
   /* Allocate enough space for the new parameters.  */
-  compiler_params =
-    ((param_info *)
-     xrealloc (compiler_params,
-              (num_compiler_params + n) * sizeof (param_info)));
+  compiler_params = XRESIZEVEC (param_info, compiler_params,
+                               num_compiler_params + n);
   /* Copy them into the table.  */
   memcpy (compiler_params + num_compiler_params,
          params,
@@ -58,24 +54,34 @@ add_params (params, n)
 /* Set the VALUE associated with the parameter given by NAME.  */
 
 void
-set_param_value (name, value)
-     const char *name;
-     int value;
+set_param_value (const char *name, int value)
 {
   size_t i;
 
   /* Make sure nobody tries to set a parameter to an invalid value.  */
-  if (value == INVALID_PARAM_VAL)
-    abort ();
+  gcc_assert (value != INVALID_PARAM_VAL);
 
   /* Scan the parameter table to find a matching entry.  */
   for (i = 0; i < num_compiler_params; ++i)
     if (strcmp (compiler_params[i].option, name) == 0)
       {
-       compiler_params[i].value = value;
+       if (value < compiler_params[i].min_value)
+         error ("minimum value of parameter %qs is %u",
+                compiler_params[i].option,
+                compiler_params[i].min_value);
+       else if (compiler_params[i].max_value > compiler_params[i].min_value
+                && value > compiler_params[i].max_value)
+         error ("maximum value of parameter %qs is %u",
+                compiler_params[i].option,
+                compiler_params[i].max_value);
+       else
+         {
+           compiler_params[i].value = value;
+           compiler_params[i].set = true;
+         }
        return;
       }
 
   /* If we didn't find this parameter, issue an error message.  */
-  error ("invalid parameter `%s'", name);
+  error ("invalid parameter %qs", name);
 }