Counting modified bits in a 32bit data word

I have to count modified bits in a volatile 32 bit data word. Example: Initial counter32[32] := 0; olddata := 0x00000010; newdata := 0x0000000001; So we have moddata := newdata xor olddata => moddata...
Counting modified bits in a 32bit data word

I have to count modified bits in a volatile 32 bit data word. Example: Initial counter32[32] := 0; olddata := 0x00000010; newdata := 0x0000000001; So we have moddata := newdata xor olddata => moddata...
In NEON, have the three instructions( VCLS, VCLZ, VCNT), are they all count sign bit?

In NEON spec: VCLS (Vector Count Leading Sign bits) counts the number of consecutive bits following the topmost bit, that are the same as the topmost bit, in each element in a vector, and places the results...
In NEON, have the three instructions( VCLS, VCLZ, VCNT), are they all count sign bit?

In NEON spec: VCLS (Vector Count Leading Sign bits) counts the number of consecutive bits following the topmost bit, that are the same as the topmost bit, in each element in a vector, and places the results...
font[i].count & font[i-16].count in 390

The target options:contiguous mode:512KB program,off-chip code memory(0x0000:0xfc00),off-chip xdata memory(0x20000:0x10000). extern code struct font_t font[]; void main(void) { unsigned char count;...