| _CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE popcount(__CLC_GENTYPE x) { |
| /* LLVM-4+ implements i16 ops for VI+ ASICs. However, ctpop implementation |
| * is missing until r326535. Therefore we have to convert sub i32 types to uint |
| * as a workaround. */ |
| #if __clang_major__ < 7 && __clang_major__ > 3 && __CLC_GENSIZE < 32 |
| /* Prevent sign extension on uint conversion */ |
| const __CLC_U_GENTYPE y = __CLC_XCONCAT(as_, __CLC_U_GENTYPE)(x); |
| /* Convert to uintX */ |
| const __CLC_XCONCAT(uint, __CLC_VECSIZE) z = __CLC_XCONCAT(convert_uint, __CLC_VECSIZE)(y); |
| /* Call popcount on uintX type */ |
| const __CLC_XCONCAT(uint, __CLC_VECSIZE) res = __clc_native_popcount(z); |
| /* Convert the result back to gentype. */ |
| return __CLC_XCONCAT(convert_, __CLC_GENTYPE)(res); |
| #else |
| return __clc_native_popcount(x); |
| #endif |
| } |
