[9/10] Remove host_integerp and tree_low_cst

[Richard Sandiford <rdsandiford at googlemail dot com>]

Remove the old functions, which are now unused.

Thanks,
Richard


gcc/
	* tree.h (host_integerp, tree_low_cst): Delete.
	* tree.c (host_integerp, tree_low_cst): Delete.

Index: gcc/tree.h
===================================================================
--- gcc/tree.h	2013-11-16 09:35:59.381239766 +0000
+++ gcc/tree.h	2013-11-16 10:14:00.618868694 +0000
@@ -3654,11 +3654,6 @@ extern int attribute_list_contained (con
 extern int tree_int_cst_equal (const_tree, const_tree);
 extern int tree_int_cst_lt (const_tree, const_tree);
 extern int tree_int_cst_compare (const_tree, const_tree);
-extern int host_integerp (const_tree, int)
-#ifndef ENABLE_TREE_CHECKING
-  ATTRIBUTE_PURE /* host_integerp is pure only when checking is disabled.  */
-#endif
-  ;
 extern bool tree_fits_shwi_p (const_tree)
 #ifndef ENABLE_TREE_CHECKING
   ATTRIBUTE_PURE /* tree_fits_shwi_p is pure only when checking is disabled.  */
@@ -3669,18 +3664,10 @@ extern bool tree_fits_uhwi_p (const_tree
   ATTRIBUTE_PURE /* tree_fits_uhwi_p is pure only when checking is disabled.  */
 #endif
   ;
-extern HOST_WIDE_INT tree_low_cst (const_tree, int);
 extern HOST_WIDE_INT tree_to_shwi (const_tree);
 extern HOST_WIDE_INT tree_to_uhwi (const_tree);
 #if !defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 4003)
 extern inline __attribute__ ((__gnu_inline__)) HOST_WIDE_INT
-tree_low_cst (const_tree t, int pos)
-{
-  gcc_assert (host_integerp (t, pos));
-  return TREE_INT_CST_LOW (t);
-}
-
-extern inline __attribute__ ((__gnu_inline__)) HOST_WIDE_INT
 tree_to_shwi (const_tree t)
 {
   gcc_assert (tree_fits_shwi_p (t));
Index: gcc/tree.c
===================================================================
--- gcc/tree.c	2013-11-16 09:59:37.205620348 +0000
+++ gcc/tree.c	2013-11-16 10:14:00.604868554 +0000
@@ -6970,26 +6970,6 @@ tree_int_cst_compare (const_tree t1, con
     return 0;
 }
 
-/* Return 1 if T is an INTEGER_CST that can be manipulated efficiently on
-   the host.  If POS is zero, the value can be represented in a single
-   HOST_WIDE_INT.  If POS is nonzero, the value must be non-negative and can
-   be represented in a single unsigned HOST_WIDE_INT.  */
-
-int
-host_integerp (const_tree t, int pos)
-{
-  if (t == NULL_TREE)
-    return 0;
-
-  return (TREE_CODE (t) == INTEGER_CST
-	  && ((TREE_INT_CST_HIGH (t) == 0
-	       && (HOST_WIDE_INT) TREE_INT_CST_LOW (t) >= 0)
-	      || (! pos && TREE_INT_CST_HIGH (t) == -1
-		  && (HOST_WIDE_INT) TREE_INT_CST_LOW (t) < 0
-		  && !TYPE_UNSIGNED (TREE_TYPE (t)))
-	      || (pos && TREE_INT_CST_HIGH (t) == 0)));
-}
-
 /* Return true if T is an INTEGER_CST whose numerical value (extended
    according to TYPE_UNSIGNED) fits in a signed HOST_WIDE_INT.  */
 
@@ -7016,17 +6996,6 @@ tree_fits_uhwi_p (const_tree t)
 	  && TREE_INT_CST_HIGH (t) == 0);
 }
 
-/* Return the HOST_WIDE_INT least significant bits of T if it is an
-   INTEGER_CST and there is no overflow.  POS is nonzero if the result must
-   be non-negative.  We must be able to satisfy the above conditions.  */
-
-HOST_WIDE_INT
-tree_low_cst (const_tree t, int pos)
-{
-  gcc_assert (host_integerp (t, pos));
-  return TREE_INT_CST_LOW (t);
-}
-
 /* T is an INTEGER_CST whose numerical value (extended according to
    TYPE_UNSIGNED) fits in a signed HOST_WIDE_INT.  Return that
    HOST_WIDE_INT.  */