Support DEFPARAMENUM in params.def

2015-10-13  Tom de Vries  <tom@codesourcery.com>

	* Makefile.in (PARAMS_H, PLUGIN_HEADERS): Add params-enum.h.
	* params-enum.h: New file.
	* opts.c (handle_param): Handle case that param arg is a string.
	* params-list.h: Handle DEFPARAMENUM5 in params.def.
	* params.c (find_param): New function, factored out of ...
	(set_param_value): ... here.
	(param_string_value_p): New function.
	* params.h (struct param_info): Add value_names field.
	(find_param, param_string_value_p): Declare.

From-SVN: r228755

1 files changed, 13 insertions, 6 deletions

diff --git a/gcc/opts.c b/gcc/opts.c
index 896875b..89b3e79 100644
--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -2128,14 +2128,21 @@ handle_param (struct gcc_options *opts, struct gcc_options *opts_set,
 	      arg);
   else
     {
-      value = integral_argument (equal + 1);
-      if (value == -1)
-	error_at (loc, "invalid --param value %qs", equal + 1);
+      *equal = '\0';
+
+      enum compiler_param index;
+      if (!find_param (arg, &index))
+	error_at (loc, "invalid --param name %qs", arg);
       else
 	{
-	  *equal = '\0';
-	  set_param_value (arg, value,
-			   opts->x_param_values, opts_set->x_param_values);
+	  if (!param_string_value_p (index, equal + 1, &value))
+	    value = integral_argument (equal + 1);
+
+	  if (value == -1)
+	    error_at (loc, "invalid --param value %qs", equal + 1);
+	  else
+	    set_param_value (arg, value,
+			     opts->x_param_values, opts_set->x_param_values);
 	}
     }