> Index: gcc/config/sparc/sparc.c
> ===================================================================
> --- gcc/config/sparc/sparc.c (revision 191083)
> +++ gcc/config/sparc/sparc.c (working copy)
> @@ -10113,33 +10113,27 @@ sparc_fold_builtin (tree fndecl, int n_a
> && TREE_CODE (arg1) == VECTOR_CST
> && TREE_CODE (arg2) == INTEGER_CST)
> {
> - int overflow = 0;
> - unsigned HOST_WIDE_INT low = TREE_INT_CST_LOW (arg2);
> - HOST_WIDE_INT high = TREE_INT_CST_HIGH (arg2);
> + bool overflow = false;
> + double_int di_arg2 = TREE_INT_CST (arg2);
> unsigned i;
>
> for (i = 0; i < VECTOR_CST_NELTS (arg0); ++i)
> {
> - unsigned HOST_WIDE_INT
> - low0 = TREE_INT_CST_LOW (VECTOR_CST_ELT (arg0, i)),
> - low1 = TREE_INT_CST_LOW (VECTOR_CST_ELT (arg1, i));
> - HOST_WIDE_INT
> - high0 = TREE_INT_CST_HIGH (VECTOR_CST_ELT (arg0, i));
> - HOST_WIDE_INT
> - high1 = TREE_INT_CST_HIGH (VECTOR_CST_ELT (arg1, i));
> + double_int e0 = TREE_INT_CST (VECTOR_CST_ELT (arg0, i));
> + double_int e1 = TREE_INT_CST (VECTOR_CST_ELT (arg1, i));
>
> - unsigned HOST_WIDE_INT l;
> - HOST_WIDE_INT h;
> + bool neg1_ovf, neg2_ovf, add1_ovf, add2_ovf;
>
> - overflow |= neg_double (low1, high1, &l, &h);
> - overflow |= add_double (low0, high0, l, h, &l, &h);
> - if (h < 0)
> - overflow |= neg_double (l, h, &l, &h);
> + double_int tmp = e1.neg_with_overflow (&neg1_ovf);
> + tmp = e0.add_with_sign (tmp, false, &add1_ovf);
> + if (tmp.is_negative ())
> + tmp = tmp.neg_with_overflow (&neg2_ovf);
>
> - overflow |= add_double (low, high, l, h, &low, &high);
> + tmp = di_arg2.add_with_sign (tmp, false, &add2_ovf);
> + overflow |= neg1_ovf | neg2_ovf | add1_ovf | add2_ovf;
> }
>
> - gcc_assert (overflow == 0);
> + gcc_assert (!overflow);
>
> return build_int_cst_wide (rtype, low, high);
> }
This cannot build because of the references to low and high in the last line.
As Richard said, building a cross cc1 is very easy.
--
Eric Botcazou
