opts: Sanity check for param names.

gcc/ChangeLog:

	* optc-gen.awk: Check that params start with -param=.
	* params.opt: Fix ipa-jump-function-lookups.

gcc/optc-gen.awk

@@ -104,6 +104,9 @@ for (i = 0; i < n_opts; i++) {
 	enabledby_negarg = nth_arg(3, enabledby_arg);
         lang_enabled_by(enabledby_langs, enabledby_name, enabledby_posarg, enabledby_negarg);
     }
+
+    if (flag_set_p("Param", flags[i]) && !(opts[i] ~ "^-param="))
+      print "#error Parameter option name '" opts[i] "' must start with '-param='"
 }
 
 

gcc/params.opt

@@ -253,7 +253,7 @@ The size of translation unit that IPA-CP pass considers large.
 Common Joined UInteger Var(param_ipa_cp_value_list_size) Init(8) Param Optimization
 Maximum size of a list of values associated with each parameter for interprocedural constant propagation.
 
--param-ipa-jump-function-lookups=
+-param=ipa-jump-function-lookups=
 Common Joined UInteger Var(param_ipa_jump_function_lookups) Init(8) Param Optimization
 Maximum number of statements visited during jump function offset discovery.