params.c (set_param_value_internal): New.

	* params.c (set_param_value_internal): New.
	(set_param_value): Use set_param_value_internal.
	(maybe_set_param_value, set_default_param_value): New.
	* params.h (PARAM_VALUE, PARAM_SET_P): Make into rvalues.
	(maybe_set_param_value, set_default_param_value): Declare.
	* config/arm/arm.c (arm_option_override): Use
	maybe_set_param_value.
	* config/i386/i386.c (ix86_option_override_internal): Use
	maybe_set_param_value.
	* config/ia64/ia64.c (ia64_option_default_params,
	TARGET_OPTION_DEFAULT_PARAMS): New.
	(ia64_option_optimization): Move some code to
	ia64_option_default_params.
	* config/picochip/picochip.c (picochip_option_override): Use
	maybe_set_param_value.
	* config/rs6000/rs6000.c (rs6000_option_default_params,
	TARGET_OPTION_DEFAULT_PARAMS): New.
	(rs6000_option_override_internal): Use maybe_set_param_value.
	(rs6000_option_optimization): Move some code to
	rs6000_option_default_params.
	* config/s390/s390.c (s390_option_override): Use
	maybe_set_param_value.
	* config/sh/sh.c (sh_option_default_params,
	TARGET_OPTION_DEFAULT_PARAMS): New.
	(sh_option_optimization): Move some code to
	sh_option_default_params.
	* config/sparc/sparc.c (sparc_option_override): Use
	maybe_set_param_value.
	* config/spu/spu.c (spu_option_default_params,
	TARGET_OPTION_DEFAULT_PARAMS): New.
	(spu_option_optimization): Move some code to
	spu_option_default_params.
	(spu_option_override): Use maybe_set_param_value.
	* doc/tm.texi.in (TARGET_OPTION_DEFAULT_PARAMS): New @hook.
	* doc/tm.texi: Regenerate.
	* ggc-common.c (init_ggc_heuristics): Use set_default_param_value.
	* opts.c (init_options_once): Use PARAM_VALUE not direct access to
	compiler_params.
	(default_options_optimization): Use maybe_set_param_value.
	(finish_options): Use maybe_set_param_value.
	* target.def (target_option.default_params): New hook.
	* toplev.c (general_init): Call
	targetm.target_option.default_params.

From-SVN: r165303

1 files changed, 37 insertions, 5 deletions

diff --git a/gcc/params.c b/gcc/params.c
index cec5751..666913a 100644
--- a/gcc/params.c
+++ b/gcc/params.c
@@ -1,5 +1,5 @@
 /* params.c - Run-time parameters.
-   Copyright (C) 2001, 2003, 2004, 2005, 2007, 2008
+   Copyright (C) 2001, 2003, 2004, 2005, 2007, 2008, 2009, 2010
    Free Software Foundation, Inc.
    Written by Mark Mitchell <mark@codesourcery.com>.
 
@@ -51,6 +51,21 @@ add_params (const param_info params[], size_t n)
   num_compiler_params += n;
 }
 
+/* Set the value of the parameter given by NUM to VALUE.  If
+   EXPLICIT_P, this is being set by the user; otherwise it is being
+   set implicitly by the compiler.  */
+
+static void
+set_param_value_internal (compiler_param num, int value,
+			  bool explicit_p)
+{
+  size_t i = (size_t) num;
+
+  compiler_params[i].value = value;
+  if (explicit_p)
+    compiler_params[i].set = true;
+}
+
 /* Set the VALUE associated with the parameter given by NAME.  */
 
 void
@@ -75,10 +90,7 @@ set_param_value (const char *name, int value)
 		 compiler_params[i].option,
 		 compiler_params[i].max_value);
 	else
-	  {
-	    compiler_params[i].value = value;
-	    compiler_params[i].set = true;
-	  }
+	  set_param_value_internal ((compiler_param) i, value, true);
 	return;
       }
 
@@ -86,6 +98,26 @@ set_param_value (const char *name, int value)
   error ("invalid parameter %qs", name);
 }
 
+/* Set the value of the parameter given by NUM to VALUE, implicitly,
+   if it has not been set explicitly by the user.  */
+
+void
+maybe_set_param_value (compiler_param num, int value)
+{
+  if (!PARAM_SET_P (num))
+    set_param_value_internal (num, value, false);
+}
+
+/* Set the default value of a parameter given by NUM to VALUE, before
+   option processing.  */
+
+void
+set_default_param_value (compiler_param num, int value)
+{
+  gcc_assert (!PARAM_SET_P (num));
+  set_param_value_internal (num, value, false);
+}
+
 /* Return the current value of num_compiler_params, for the benefit of
    plugins that use parameters as features.  */