No point in making __parityti2 go through 2 calls to get to
__paritysi2.
Reviewed By: MaskRay, efriedma
Differential Revision: https://reviews.llvm.org/D87218
COMPILER_RT_ABI int __paritydi2(di_int a) {
dwords x;
x.all = a;
- return __paritysi2(x.s.high ^ x.s.low);
+ su_int x2 = x.s.high ^ x.s.low;
+ x2 ^= x2 >> 16;
+ x2 ^= x2 >> 8;
+ x2 ^= x2 >> 4;
+ return (0x6996 >> (x2 & 0xF)) & 1;
}
COMPILER_RT_ABI int __parityti2(ti_int a) {
twords x;
+ dwords x2;
x.all = a;
- return __paritydi2(x.s.high ^ x.s.low);
+ x2.all = x.s.high ^ x.s.low;
+ su_int x3 = x2.s.high ^ x2.s.low;
+ x3 ^= x3 >> 16;
+ x3 ^= x3 >> 8;
+ x3 ^= x3 >> 4;
+ return (0x6996 >> (x3 & 0xF)) & 1;
}
#endif // CRT_HAS_128BIT