[clang] [llvm] [AArch64] Add intrinsics for 16-bit non-widening FMLA/FMLS (PR #88553)

[Tomas Matheson via llvm-commits]

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+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 4
+// RUN: %clang_cc1                               -fclang-abi-compat=latest -triple aarch64-none-linux-gnu -target-feature +sme2 -target-feature +sme-f16f16 -target-feature +b16b16 -O2 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1                        -x c++ -fclang-abi-compat=latest -triple aarch64-none-linux-gnu -target-feature +sme2 -target-feature +sme-f16f16 -target-feature +b16b16 -O2 -Werror -Wall -emit-llvm -o - %s | FileCheck %s --check-prefix CHECK-CXX
+// RUN: %clang_cc1 -DSME_OVERLOADED_FORMS        -fclang-abi-compat=latest -triple aarch64-none-linux-gnu -target-feature +sme2 -target-feature +sme-f16f16 -target-feature +b16b16 -O2 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -DSME_OVERLOADED_FORMS -x c++ -fclang-abi-compat=latest -triple aarch64-none-linux-gnu -target-feature +sme2 -target-feature +sme-f16f16 -target-feature +b16b16 -O2 -Werror -Wall -emit-llvm -o - %s | FileCheck %s --check-prefix CHECK-CXX
+
+// RUN: %clang_cc1 -fclang-abi-compat=latest -triple aarch64-none-linux-gnu -target-feature +sme2p1 -target-feature +sme-f16f16 -target-feature +b16b16 -O2 -S -Werror -Wall %s -o /dev/null
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tmatheson-arm wrote:

This needs something like `-target-feature +sme2`

https://github.com/llvm/llvm-project/pull/88553