[llvm] [X86][AVX10.2] Skip select-minmax fusion for BF16 (PR #194987)

Thu Apr 30 14:06:13 PDT 2026

github-actions[bot] wrote:

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

* 134120 tests passed
* 3189 tests skipped
* 2 tests failed

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

### LLVM
<details>
<summary>LLVM.CodeGen/X86/avx10_2_512bf16-intrinsics.ll</summary>

```
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 2
c:\_work\llvm-project\llvm-project\build\bin\llc.exe < C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\X86\avx10_2_512bf16-intrinsics.ll -verify-machineinstrs -mtriple=x86_64-unknown-unknown --show-mc-encoding -mattr=+avx10.2 | c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\X86\avx10_2_512bf16-intrinsics.ll --check-prefixes=CHECK,X64
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\llc.exe' -verify-machineinstrs -mtriple=x86_64-unknown-unknown --show-mc-encoding -mattr=+avx10.2
# .---command stderr------------
# | LLVM ERROR: Cannot select: intrinsic %llvm.x86.avx10.vminbf16512
# | PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and instructions to reproduce the bug.
# | Stack dump:
# | 0.	Program arguments: c:\\_work\\llvm-project\\llvm-project\\build\\bin\\llc.exe -verify-machineinstrs -mtriple=x86_64-unknown-unknown --show-mc-encoding -mattr=+avx10.2
# | 1.	Running pass 'Function Pass Manager' on module '<stdin>'.
# | 2.	Running pass 'X86 DAG->DAG Instruction Selection' on function '@test_int_x86_avx10_min_bf16_512'
# | Exception Code: 0xC000001D
# |  #0 0x00007ff6a917c4a6 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x2ddc4a6)
# |  #1 0x00007fff1d1bbb04 (C:\Windows\System32\ucrtbase.dll+0x7bb04)
# |  #2 0x00007fff1d1bcad1 (C:\Windows\System32\ucrtbase.dll+0x7cad1)
# |  #3 0x00007ff6a6acc41a (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x72c41a)
# |  #4 0x00007ff6a6a94ee7 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x6f4ee7)
# |  #5 0x00007ff6a6a9417b (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x6f417b)
# |  #6 0x00007ff6a83328ea (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x1f928ea)
# |  #7 0x00007ff6a6a85b5b (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x6e5b5b)
# |  #8 0x00007ff6a6a8464c (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x6e464c)
# |  #9 0x00007ff6a6a822c0 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x6e22c0)
# | #10 0x00007ff6a6a81920 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x6e1920)
# | #11 0x00007ff6a6a7d8d5 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x6dd8d5)
# | #12 0x00007ff6a832382c (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x1f8382c)
# | #13 0x00007ff6a6a7a954 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x6da954)
# | #14 0x00007ff6a6e435e3 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0xaa35e3)
# | #15 0x00007ff6a688a969 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x4ea969)
# | #16 0x00007ff6a68933fd (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x4f33fd)
# | #17 0x00007ff6a688b5e8 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x4eb5e8)
# | #18 0x00007ff6a63a747f (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x747f)
# | #19 0x00007ff6aad0eb20 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x496eb20)
# | #20 0x00007fff240a4cb0 (C:\Windows\System32\KERNEL32.DLL+0x14cb0)
# | #21 0x00007fff303dedcb (C:\Windows\SYSTEM32\ntdll.dll+0x7edcb)
# `-----------------------------
# error: command failed with exit status: 0xc000001d
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe' 'C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\X86\avx10_2_512bf16-intrinsics.ll' --check-prefixes=CHECK,X64
# .---command stderr------------
# | FileCheck error: '<stdin>' is empty.
# | FileCheck command line:  c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\X86\avx10_2_512bf16-intrinsics.ll --check-prefixes=CHECK,X64
# `-----------------------------
# error: command failed with exit status: 2

--

```
</details>
<details>
<summary>LLVM.CodeGen/X86/avx10_2bf16-intrinsics.ll</summary>

```
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 2
c:\_work\llvm-project\llvm-project\build\bin\llc.exe < C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\X86\avx10_2bf16-intrinsics.ll -verify-machineinstrs -mtriple=x86_64-unknown-unknown --show-mc-encoding -mattr=+avx10.2 | c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\X86\avx10_2bf16-intrinsics.ll --check-prefixes=CHECK,X64
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\llc.exe' -verify-machineinstrs -mtriple=x86_64-unknown-unknown --show-mc-encoding -mattr=+avx10.2
# .---command stderr------------
# | LLVM ERROR: Cannot select: intrinsic %llvm.x86.avx10.vminbf16256
# | PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and instructions to reproduce the bug.
# | Stack dump:
# | 0.	Program arguments: c:\\_work\\llvm-project\\llvm-project\\build\\bin\\llc.exe -verify-machineinstrs -mtriple=x86_64-unknown-unknown --show-mc-encoding -mattr=+avx10.2
# | 1.	Running pass 'Function Pass Manager' on module '<stdin>'.
# | 2.	Running pass 'X86 DAG->DAG Instruction Selection' on function '@test_int_x86_avx10_min_bf16_256'
# | Exception Code: 0xC000001D
# |  #0 0x00007ff6a917c4a6 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x2ddc4a6)
# |  #1 0x00007fff1d1bbb04 (C:\Windows\System32\ucrtbase.dll+0x7bb04)
# |  #2 0x00007fff1d1bcad1 (C:\Windows\System32\ucrtbase.dll+0x7cad1)
# |  #3 0x00007ff6a6acc41a (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x72c41a)
# |  #4 0x00007ff6a6a94ee7 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x6f4ee7)
# |  #5 0x00007ff6a6a9417b (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x6f417b)
# |  #6 0x00007ff6a83328ea (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x1f928ea)
# |  #7 0x00007ff6a6a85b5b (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x6e5b5b)
# |  #8 0x00007ff6a6a8464c (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x6e464c)
# |  #9 0x00007ff6a6a822c0 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x6e22c0)
# | #10 0x00007ff6a6a81920 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x6e1920)
# | #11 0x00007ff6a6a7d8d5 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x6dd8d5)
# | #12 0x00007ff6a832382c (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x1f8382c)
# | #13 0x00007ff6a6a7a954 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x6da954)
# | #14 0x00007ff6a6e435e3 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0xaa35e3)
# | #15 0x00007ff6a688a969 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x4ea969)
# | #16 0x00007ff6a68933fd (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x4f33fd)
# | #17 0x00007ff6a688b5e8 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x4eb5e8)
# | #18 0x00007ff6a63a747f (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x747f)
# | #19 0x00007ff6aad0eb20 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x496eb20)
# | #20 0x00007fff240a4cb0 (C:\Windows\System32\KERNEL32.DLL+0x14cb0)
# | #21 0x00007fff303dedcb (C:\Windows\SYSTEM32\ntdll.dll+0x7edcb)
# `-----------------------------
# error: command failed with exit status: 0xc000001d
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe' 'C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\X86\avx10_2bf16-intrinsics.ll' --check-prefixes=CHECK,X64
# .---command stderr------------
# | FileCheck error: '<stdin>' is empty.
# | FileCheck command line:  c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\X86\avx10_2bf16-intrinsics.ll --check-prefixes=CHECK,X64
# `-----------------------------
# error: command failed with exit status: 2

--

```
</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/194987