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

[Kerry McLaughlin via cfe-commits]

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+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 6
+// RUN: %clang_cc1 -triple aarch64 -target-feature +sve -target-feature +sve2 -target-feature +sve2p3 -disable-O0-optnone -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64 -target-feature +sve -target-feature +sve2 -target-feature +sve2p3 -disable-O0-optnone -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s -check-prefix=CPP-CHECK
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kmclaughlin-arm wrote:

Are all three of `+sve`, `+sve2` and `+sve2p3` necessary? I see that the tests still pass without `+sve2`, so maybe this can be removed.

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