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SIMD ISAReturn TypeNameArgumentsInstruction Group
Neonint8x8_tvaba_s8(int8x8_t a, int8x8_t b, int8x8_t c)Vector arithmetic / Absolute / Absolute difference and accumulate
Description
Signed Absolute difference and Accumulate. This instruction subtracts the elements of the vector of the second source SIMD&FP register from the corresponding elements of the first source SIMD&FP register, and accumulates the absolute values of the results into the elements of the vector of the destination SIMD&FP register.
Results
Vd.8B result
This intrinsic compiles to the following instructions:

SABA Vd.8B,Vn.8B,Vm.8B

Argument Preparation
a register: Vd.8Bb register: Vn.8Bc register: Vm.8B
Architectures
v7, A32, A64

Operation

CheckFPAdvSIMDEnabled64();
bits(datasize) operand1 = V[n];
bits(datasize) operand2 = V[m];
bits(datasize) result;
integer element1;
integer element2;
bits(esize) absdiff;

result = if accumulate then V[d] else Zeros();
for e = 0 to elements-1
    element1 = Int(Elem[operand1, e, esize], unsigned);
    element2 = Int(Elem[operand2, e, esize], unsigned);
    absdiff = Abs(element1 - element2)<esize-1:0>;
    Elem[result, e, esize] = Elem[result, e, esize] + absdiff;
V[d] = result;