* tm.texi (POINTERS_EXTEND_UNSIGNED) Modify definition.

[thirdparty/gcc.git] / gcc / simplify-rtx.c

diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c
index 1d090ba77839bcd42211cfb726127dda7dbd81ca..ed7b0ea6e55054f6bf7f327d36b085336849dd87 100644 (file)
--- a/gcc/simplify-rtx.c
+++ b/gcc/simplify-rtx.c
@@ -699,7 +699,7 @@ simplify_unary_operation (code, mode, op, op_mode)
              && GET_CODE (XEXP (XEXP (op, 0), 1)) == LABEL_REF)
            return XEXP (op, 0);
 
-#ifdef POINTERS_EXTEND_UNSIGNED
+#if defined(POINTERS_EXTEND_UNSIGNED) && !defined(HAVE_ptr_extend)
          if (! POINTERS_EXTEND_UNSIGNED
              && mode == Pmode && GET_MODE (op) == ptr_mode
              && (CONSTANT_P (op)
@@ -711,9 +711,9 @@ simplify_unary_operation (code, mode, op, op_mode)
 #endif
          break;
 
-#ifdef POINTERS_EXTEND_UNSIGNED
+#if defined(POINTERS_EXTEND_UNSIGNED) && !defined(HAVE_ptr_extend)
        case ZERO_EXTEND:
-         if (POINTERS_EXTEND_UNSIGNED
+         if (POINTERS_EXTEND_UNSIGNED > 0
              && mode == Pmode && GET_MODE (op) == ptr_mode
              && (CONSTANT_P (op)
                  || (GET_CODE (op) == SUBREG