[libc-commits] [clang] [libc] [libcxx] [clang][X86] Emit AVX level mismatch psABI warnings on function definitions (PR #199091)

[via libc-commits]

github-actions[bot] wrote:

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

* 54054 tests passed
* 1264 tests skipped
* 1 test failed

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

### Clang
<details>
<summary>Clang.CodeGen/target-builtin-error-3.c</summary>

```
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 1
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 C:\_work\llvm-project\llvm-project\clang\test\CodeGen\target-builtin-error-3.c -triple=x86_64-apple-darwin -S -verify -o - -target-feature +avx
# 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 'C:\_work\llvm-project\llvm-project\clang\test\CodeGen\target-builtin-error-3.c' -triple=x86_64-apple-darwin -S -verify -o - -target-feature +avx
# .---command stderr------------
# | error: 'expected-warning' diagnostics expected but not seen: 
# |   File C:\_work\llvm-project\llvm-project\clang\test\CodeGen\target-builtin-error-3.c Line 21 (directive at C:\_work\llvm-project\llvm-project\clang\test\CodeGen\target-builtin-error-3.c:20): AVX vector argument of type 'float16' (vector of 16 'float' values) without 'avx512f' enabled changes the ABI
# | 1 error generated.
# `-----------------------------
# 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/199091