langhooks-def.h (LANG_HOOKS_INITIALIZER): Remove LANG_HOOKS_SAFE_FROM_P.

2007-04-06  Daniel Berlin  <dberlin@dberlin.org>

	* langhooks-def.h (LANG_HOOKS_INITIALIZER): Remove
	LANG_HOOKS_SAFE_FROM_P.
	* expr.c (safe_from_p): Remove langhook call.
	* langhooks.h (lang_hooks): Remove safe_from_p.
	(lhd_safe_from_p): Remove prototype.
	* langhooks.c (lhd_safe_from_p): Remove.

From-SVN: r123624

5 files changed, 9 insertions, 26 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ed873d7..70befba 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2007-04-06  Daniel Berlin  <dberlin@dberlin.org>
+
+	* langhooks-def.h (LANG_HOOKS_INITIALIZER): Remove
+	LANG_HOOKS_SAFE_FROM_P.
+	* expr.c (safe_from_p): Remove langhook call.
+	* langhooks.h (lang_hooks): Remove safe_from_p.
+	(lhd_safe_from_p): Remove prototype.
+	* langhooks.c (lhd_safe_from_p): Remove.
+	
 2007-04-06  Jan Hubicka  <jh@suse.cz>
 
 	* cgraphunit.c (decide_is_function_needed): Do not keep always_inline
diff --git a/gcc/expr.c b/gcc/expr.c
index 77cc44a..24dfbf5 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -6302,12 +6302,6 @@ safe_from_p (rtx x, tree exp, int top_p)
 	    && ! safe_from_p (x, TREE_OPERAND (exp, i), 0))
 	  return 0;
 
-      /* If this is a language-specific tree code, it may require
-	 special handling.  */
-      if ((unsigned int) TREE_CODE (exp)
-	  >= (unsigned int) LAST_AND_UNUSED_TREE_CODE
-	  && !lang_hooks.safe_from_p (x, exp))
-	return 0;
       break;
 
     case tcc_type:
diff --git a/gcc/langhooks-def.h b/gcc/langhooks-def.h
index 5729900..004b3c5 100644
--- a/gcc/langhooks-def.h
+++ b/gcc/langhooks-def.h
@@ -49,7 +49,6 @@ extern tree lhd_return_tree (tree);
 extern tree lhd_return_null_tree_v (void);
 extern tree lhd_return_null_tree (tree);
 extern tree lhd_do_nothing_iii_return_null_tree (int, int, int);
-extern int lhd_safe_from_p (rtx, tree);
 extern tree lhd_staticp (tree);
 extern void lhd_print_tree_nothing (FILE *, tree, int);
 extern const char *lhd_decl_printable_name (tree, int);
@@ -110,7 +109,6 @@ extern void lhd_omp_firstprivatize_type_sizes (struct gimplify_omp_ctx *,
 #define LANG_HOOKS_EXPAND_CONSTANT	lhd_return_tree
 #define LANG_HOOKS_EXPAND_EXPR		lhd_expand_expr
 #define LANG_HOOKS_EXPAND_DECL		lhd_expand_decl
-#define LANG_HOOKS_SAFE_FROM_P		lhd_safe_from_p
 #define LANG_HOOKS_FINISH_INCOMPLETE_DECL lhd_do_nothing_t
 #define LANG_HOOKS_STATICP		lhd_staticp
 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL lhd_do_nothing_t
@@ -296,7 +294,6 @@ extern tree lhd_make_node (enum tree_code);
   LANG_HOOKS_EXPAND_CONSTANT, \
   LANG_HOOKS_EXPAND_EXPR, \
   LANG_HOOKS_EXPAND_DECL, \
-  LANG_HOOKS_SAFE_FROM_P, \
   LANG_HOOKS_FINISH_INCOMPLETE_DECL, \
   LANG_HOOKS_MARK_ADDRESSABLE, \
   LANG_HOOKS_STATICP, \
diff --git a/gcc/langhooks.c b/gcc/langhooks.c
index 1ba6ec2..919f05d 100644
--- a/gcc/langhooks.c
+++ b/gcc/langhooks.c
@@ -117,14 +117,6 @@ lhd_print_tree_nothing (FILE * ARG_UNUSED (file),
 {
 }
 
-/* Called from safe_from_p.  */
-
-int
-lhd_safe_from_p (rtx ARG_UNUSED (x), tree ARG_UNUSED (exp))
-{
-  return 1;
-}
-
 /* Called from staticp.  */
 
 tree
diff --git a/gcc/langhooks.h b/gcc/langhooks.h
index b711610..f0220fc 100644
--- a/gcc/langhooks.h
+++ b/gcc/langhooks.h
@@ -315,15 +315,6 @@ struct lang_hooks
      1 if handled, 0 otherwise.  */
   int (*expand_decl) (tree);
 
-  /* Hook called by safe_from_p for language-specific tree codes.  It is
-     up to the language front-end to install a hook if it has any such
-     codes that safe_from_p needs to know about.  Since same_from_p will
-     recursively explore the TREE_OPERANDs of an expression, this hook
-     should not reexamine those pieces.  This routine may recursively
-     call safe_from_p; it should always pass `0' as the TOP_P
-     parameter.  */
-  int (*safe_from_p) (rtx, tree);
-
   /* Function to finish handling an incomplete decl at the end of
      compilation.  Default hook is does nothing.  */
   void (*finish_incomplete_decl) (tree);