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

[via cfe-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 +sme2p1 -target-feature +sme-f16f16 -target-feature +b16b16 -O2 -S -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1                        -x c++ -fclang-abi-compat=latest -triple aarch64-none-linux-gnu -target-feature +sme2p1 -target-feature +sme-f16f16 -target-feature +b16b16 -O2 -S -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 +sme2p1 -target-feature +sme-f16f16 -target-feature +b16b16 -O2 -S -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 +sme2p1 -target-feature +sme-f16f16 -target-feature +b16b16 -O2 -S -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
+
+// REQUIRES: aarch64-registered-target
+#include <arm_sme.h>
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CarolineConcatto wrote:

I believe we could add these tests in clang/test/CodeGen/aarch64-sme2-intrinsics/acle_sme2_mla.c

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