rtl.h (target_rtl): Remove lang_dependent_initialized.

gcc/
	* rtl.h (target_rtl): Remove lang_dependent_initialized.
	* toplev.c (initialize_rtl): Don't use it.  Move previously
	"language-dependent" calls to...
	(backend_init): ...here.
	(lang_dependent_init_target): Don't set lang_dependent_initialized.
	Assert that RTL initialization hasn't happend yet.

From-SVN: r213004

gcc/ChangeLog

 2014-07-24  Richard Sandiford  <rdsandiford@googlemail.com>
 
+	* rtl.h (target_rtl): Remove lang_dependent_initialized.
+	* toplev.c (initialize_rtl): Don't use it.  Move previously
+	"language-dependent" calls to...
+	(backend_init): ...here.
+	(lang_dependent_init_target): Don't set lang_dependent_initialized.
+	Assert that RTL initialization hasn't happend yet.
+
+2014-07-24  Richard Sandiford  <rdsandiford@googlemail.com>
+
 	PR rtl-optimization/61629
 	* reginfo.c (reinit_regs): Only call ira_init and recog_init if
 	they have already been initialized.

gcc/rtl.h

@@ -2517,7 +2517,6 @@ struct GTY(()) target_rtl {
 
   /* Track if RTL has been initialized.  */
   bool target_specific_initialized;
-  bool lang_dependent_initialized;
 };
 
 extern GTY(()) struct target_rtl default_target_rtl;

gcc/toplev.c

@@ -1607,6 +1607,10 @@ backend_init_target (void)
      on a mode change.  */
   init_expmed ();
   init_lower_subreg ();
+  init_set_costs ();
+
+  init_expr_target ();
+  ira_init ();
 
   /* We may need to recompute regno_save_code[] and regno_restore_code[]
      after a mode change as well.  */
@@ -1685,7 +1689,8 @@ lang_dependent_init_target (void)
      front end is initialized.  It also depends on the HAVE_xxx macros
      generated from the target machine description.  */
   init_optabs ();
-  this_target_rtl->lang_dependent_initialized = false;
+
+  gcc_assert (!this_target_rtl->target_specific_initialized);
 }
 
 /* Perform initializations that are lang-dependent or target-dependent.
@@ -1704,26 +1709,10 @@ initialize_rtl (void)
 
   /* Target specific RTL backend initialization.  */
   if (!this_target_rtl->target_specific_initialized)
-    backend_init_target ();
-  this_target_rtl->target_specific_initialized = true;
-
-  if (this_target_rtl->lang_dependent_initialized)
-    return;
-  this_target_rtl->lang_dependent_initialized = true;
-
-  /* The following initialization functions need to generate rtl, so
-     provide a dummy function context for them.  */
-  init_dummy_function_start ();
-
-  /* Do the target-specific parts of expr initialization.  */
-  init_expr_target ();
-
-  /* Although the actions of these functions are language-independent,
-     they use optabs, so we cannot call them from backend_init.  */
-  init_set_costs ();
-  ira_init ();
-
-  expand_dummy_function_end ();
+    {
+      backend_init_target ();
+      this_target_rtl->target_specific_initialized = true;
+    }
 }
 
 /* Language-dependent initialization.  Returns nonzero on success.  */