* opt-functions.awk (global_state_p, needs_state_p, static_var): New.

	(var_ref): Take the option's flags as a second parameter.  Check
	static_var.
	* optc-gen.awk: Declare local state variables.  Pass flags to var_ref.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@100937 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f768e4f..0de0972 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2005-06-14  Richard Sandiford  <richard@codesourcery.com>
+
+       * opt-functions.awk (global_state_p, needs_state_p, static_var): New.
+       (var_ref): Take the option's flags as a second parameter.  Check
+       static_var.
+       * optc-gen.awk: Declare local state variables.  Pass flags to var_ref.
+
 2005-06-14  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
        PR target/20301

diff --git a/gcc/opt-functions.awk b/gcc/opt-functions.awk
index 9097dfb..b512496 100644 (file)
--- a/gcc/opt-functions.awk
+++ b/gcc/opt-functions.awk
@@ -89,6 +89,32 @@ function var_name(flags)
        return nth_arg(0, opt_args("Var", flags))
 }
 
+# Return true if the option described by FLAGS has a globally-visible state.
+function global_state_p(flags)
+{
+       return (var_name(flags) != "" \
+               || opt_args("Mask", flags) != "" \
+               || opt_args("InverseMask", flags) != "")
+}
+
+# Return true if the option described by FLAGS must have some state
+# associated with it.
+function needs_state_p(flags)
+{
+       return flag_set_p("Target", flags)
+}
+
+# If FLAGS describes an option that needs a static state variable,
+# return the name of that variable, otherwise return "".  NAME is
+# the name of the option.
+function static_var(name, flags)
+{
+       if (global_state_p(flags) || !needs_state_p(flags))
+               return ""
+       gsub ("[^A-Za-z0-9]", "_", name)
+       return "VAR_" name
+}
+
 # Return the type of variable that should be associated with the given flags.
 function var_type(flags)
 {
@@ -128,11 +154,11 @@ function var_set(flags)
        return "CLVC_BOOLEAN, 0"
 }
 
-# Given that an option has flags FLAGS, return an initializer for the
-# "flag_var" field of its cl_options[] entry.
-function var_ref(flags)
+# Given that an option called NAME has flags FLAGS, return an initializer
+# for the "flag_var" field of its cl_options[] entry.
+function var_ref(name, flags)
 {
-       name = var_name(flags)
+       name = var_name(flags) static_var(name, flags)
        if (name != "")
                return "&" name
        if (opt_args("Mask", flags) != "")

diff --git a/gcc/optc-gen.awk b/gcc/optc-gen.awk
index a71eb2a..85876e0 100644 (file)
--- a/gcc/optc-gen.awk
+++ b/gcc/optc-gen.awk
@@ -85,6 +85,14 @@ for (i = 0; i < n_opts; i++) {
        var_seen[name] = 1;
 }
 
+print ""
+print "/* Local state variables.  */"
+for (i = 0; i < n_opts; i++) {
+       name = static_var(opts[i], flags[i]);
+       if (name != "")
+               print "static " var_type(flags[i]) name ";"
+}
+print ""
 
 print "const char * const lang_names[] =\n{"
 for (i = 0; i < n_langs; i++) {
@@ -152,7 +160,8 @@ for (i = 0; i < n_opts; i++) {
                       condition, cl_flags, cl_flags)
        else
                printf("    %s,\n", cl_flags)
-       printf("    %s, %s }%s\n", var_ref(flags[i]), var_set(flags[i]), comma)
+       printf("    %s, %s }%s\n", var_ref(opts[i], flags[i]),
+              var_set(flags[i]), comma)
 }
 
 print "};"