[clang] [CIR][Aarch64] upstream scalar & vector intrinsics (FP16) (PR #190310)

[via cfe-commits]

github-actions[bot] wrote:

<!--PREMERGE ADVISOR COMMENT: Windows-->
# :window: Windows x64 Test Results

* 53525 tests passed
* 1656 tests skipped
* 1 test failed

## Failed Tests
(click on a test name to see its output)

### Clang
<details>
<summary>Clang.CodeGen/AArch64/neon/fp16_intrinsics.c</summary>

```
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 2
c:\_work\llvm-project\llvm-project\build\bin\clang.exe -cc1 -internal-isystem C:\_work\llvm-project\llvm-project\build\lib\clang\23\include -nostdsysteminc -triple arm64-none-linux-gnu -target-feature +fullfp16     -fclangir -disable-O0-optnone   -flax-vector-conversions=none -emit-cir -o C:\_work\llvm-project\llvm-project\build\tools\clang\test\CodeGen\AArch64\neon\Output\fp16_intrinsics.c.tmp.cir C:\_work\llvm-project\llvm-project\clang\test\CodeGen\AArch64\neon\fp16_intrinsics.c
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\clang.exe' -cc1 -internal-isystem 'C:\_work\llvm-project\llvm-project\build\lib\clang\23\include' -nostdsysteminc -triple arm64-none-linux-gnu -target-feature +fullfp16 -fclangir -disable-O0-optnone -flax-vector-conversions=none -emit-cir -o 'C:\_work\llvm-project\llvm-project\build\tools\clang\test\CodeGen\AArch64\neon\Output\fp16_intrinsics.c.tmp.cir' 'C:\_work\llvm-project\llvm-project\clang\test\CodeGen\AArch64\neon\fp16_intrinsics.c'
# .---command stderr------------
# | error: clang IR support not available, rebuild clang with -DCLANG_ENABLE_CIR=ON
# `-----------------------------
# error: command failed with exit status: 1

--

```
</details>

If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.

https://github.com/llvm/llvm-project/pull/190310