Remove first_pass_instance

2015-11-16  Tom de Vries  <tom@codesourcery.com>

	* passes.c (first_pass_instance): Remove variable.
	(execute_todo): Remove setting of first_pass_instance.
	* tree-pass.h (first_pass_instance): Remove declaration.

From-SVN: r230420

gcc/ChangeLog

 2015-11-16  Tom de Vries  <tom@codesourcery.com>
 
+	* passes.c (first_pass_instance): Remove variable.
+	(execute_todo): Remove setting of first_pass_instance.
+	* tree-pass.h (first_pass_instance): Remove declaration.
+
+2015-11-16  Tom de Vries  <tom@codesourcery.com>
+
 	* passes.def: Add arg to pass_ccp pass instantiation.
 	* tree-ssa-ccp.c (ccp_finalize): Add param nonzero_p.  Use nonzero_p
 	instead of first_pass_instance.

gcc/passes.c

@@ -151,7 +151,6 @@ debug_pass (void)
 
 /* Global variables used to communicate with passes.  */
 bool in_gimple_form;
-bool first_pass_instance;
 
 
 /* This is called from various places for FUNCTION_DECL, VAR_DECL,
@@ -2005,9 +2004,6 @@ execute_todo (unsigned int flags)
 
   timevar_push (TV_TODO);
 
-  /* Inform the pass whether it is the first time it is run.  */
-  first_pass_instance = (flags & TODO_mark_first_instance) != 0;
-
   statistics_fini_pass ();
 
   if (flags)

gcc/tree-pass.h

@@ -629,12 +629,6 @@ extern void ipa_read_optimization_summaries (void);
 extern void register_one_dump_file (opt_pass *);
 extern bool function_called_by_processed_nodes_p (void);
 
-/* Set to true if the pass is called the first time during compilation of the
-   current function.  Note that using this information in the optimization
-   passes is considered not to be clean, and it should be avoided if
-   possible.  */
-extern bool first_pass_instance;
-
 /* Declare for plugins.  */
 extern void do_per_function_toporder (void (*) (function *, void *), void *);