* double-int.h (double_int_setbit): Declare.

[pf3gnuchains/gcc-fork.git] / gcc / builtins.c

diff --git a/gcc/builtins.c b/gcc/builtins.c
index dbab484..65940dd 100644 (file)
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -5279,7 +5279,6 @@ expand_builtin_signbit (tree exp, rtx target)
 {
   const struct real_format *fmt;
   enum machine_mode fmode, imode, rmode;
-  HOST_WIDE_INT hi, lo;
   tree arg;
   int word, bitpos;
   enum insn_code icode;
@@ -5355,21 +5354,12 @@ expand_builtin_signbit (tree exp, rtx target)
 
   if (bitpos < GET_MODE_BITSIZE (rmode))
     {
-      if (bitpos < HOST_BITS_PER_WIDE_INT)
-       {
-         hi = 0;
-         lo = (HOST_WIDE_INT) 1 << bitpos;
-       }
-      else
-       {
-         hi = (HOST_WIDE_INT) 1 << (bitpos - HOST_BITS_PER_WIDE_INT);
-         lo = 0;
-       }
+      double_int mask = double_int_setbit (double_int_zero, bitpos);
 
       if (GET_MODE_SIZE (imode) > GET_MODE_SIZE (rmode))
        temp = gen_lowpart (rmode, temp);
       temp = expand_binop (rmode, and_optab, temp,
-                          immed_double_const (lo, hi, rmode),
+                          immed_double_int_const (mask, rmode),
                           NULL_RTX, 1, OPTAB_LIB_WIDEN);
     }
   else