[clang] [llvm] [Clang][AArch64][SVE2p3][SME2p3] Add intrinsics for v9.7a add/add-and-subtract/subtract pairwise operations (PR #187527)

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https://github.com/CarolineConcatto commented:

I left a comments in the ACLE PR, but I think SUBP should have :https://developer.arm.com/documentation/ddi0602/2025-09/SVE-Instructions/SUBPT--predicated---Subtract-checked-pointer-vectors--predicated--?lang=en
Should have the following prototypes:
_m, _x, and _z like we see for svadd:
https://developer.arm.com/architectures/instruction-sets/intrinsics/#f:@navigationhierarchiesreturnbasetype=[%5Buint,int%5D]&q=svadd
Because it should allow to zero, merge or dont care the non-active lane masks.

https://github.com/llvm/llvm-project/pull/187527