SVE Instruction List by Dougall Johnson
FMMLA (non-widening): Floating-point matrix multiply-accumulate
FMMLA Zda.H, Zn.H, Zm.H (SVE2.2+F16MM+NS
128-bit SVE

Within each 64-bit segment, interpreting the 16-bit floats from (1), (2) and (3) as 2-by-2 matrices, multiply (1) by (2), add the resulting 2-by-2 matrix to (3), and write the result to (4). See
the documentation for the exact order of operations.
256-bit SVE

Within each 64-bit segment, interpreting the 16-bit floats from (1), (2) and (3) as 2-by-2 matrices, multiply (1) by (2), add the resulting 2-by-2 matrix to (3), and write the result to (4). See
the documentation for the exact order of operations.
512-bit SVE

Within each 64-bit segment, interpreting the 16-bit floats from (1), (2) and (3) as 2-by-2 matrices, multiply (1) by (2), add the resulting 2-by-2 matrix to (3), and write the result to (4). See
the documentation for the exact order of operations.
Larger sizes
1024-bit SVE

Within each 64-bit segment, interpreting the 16-bit floats from (1), (2) and (3) as 2-by-2 matrices, multiply (1) by (2), add the resulting 2-by-2 matrix to (3), and write the result to (4). See
the documentation for the exact order of operations.
2048-bit SVE

Within each 64-bit segment, interpreting the 16-bit floats from (1), (2) and (3) as 2-by-2 matrices, multiply (1) by (2), add the resulting 2-by-2 matrix to (3), and write the result to (4). 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.