SVE Instruction List by Dougall Johnson
FDOT (2-way, indexed, FP16 to FP32): Half-precision dot product by indexed element to single-precision
FDOT Zda.S, Zn.H, Zm.H[imm] (SVE2.1 (SME2
svfloat32_t svdot_lane[_f32_f16](svfloat32_t zda, svfloat16_t zn, svfloat16_t zm, uint64_t imm_idx)
128-bit SVE
For each pair of 16-bit floats from (1) and (2), compute the dot-product, then add the result to the corresponding 32-bit float accumulator from (3), setting (4) to the total. Within each 128-bit segment, the pair of values used from (1) is specified by
imm. See
the documentation for the exact order of operations.
256-bit SVE
For each pair of 16-bit floats from (1) and (2), compute the dot-product, then add the result to the corresponding 32-bit float accumulator from (3), setting (4) to the total. Within each 128-bit segment, the pair of values used from (1) is specified by
imm. See
the documentation for the exact order of operations.
512-bit SVE
For each pair of 16-bit floats from (1) and (2), compute the dot-product, then add the result to the corresponding 32-bit float accumulator from (3), setting (4) to the total. Within each 128-bit segment, the pair of values used from (1) is specified by
imm. See
the documentation for the exact order of operations.
Larger sizes
1024-bit SVE
For each pair of 16-bit floats from (1) and (2), compute the dot-product, then add the result to the corresponding 32-bit float accumulator from (3), setting (4) to the total. Within each 128-bit segment, the pair of values used from (1) is specified by
imm. See
the documentation for the exact order of operations.
2048-bit SVE
For each pair of 16-bit floats from (1) and (2), compute the dot-product, then add the result to the corresponding 32-bit float accumulator from (3), setting (4) to the total. Within each 128-bit segment, the pair of values used from (1) is specified by
imm. See
the documentation for the exact order of operations.
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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.