| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // hadd = (x+y)>>1 |
| // This can be simplified to x>>1 + y>>1 + (1 if both x and y have the 1s bit |
| // set) This saves us having to do any checks for overflow in the addition sum |
| _CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE __clc_hadd(__CLC_GENTYPE x, |
| __CLC_GENTYPE y) { |
| return (x >> (__CLC_GENTYPE)1) + (y >> (__CLC_GENTYPE)1) + |
| (x & y & (__CLC_GENTYPE)1); |
| } |
