[llvm] [AMDGPU] New test for untested line in AMDGPUMarkLastScratchLoad (PR #185430)

[via llvm-commits]

github-actions[bot] wrote:

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

* 131967 tests passed
* 2983 tests skipped
* 1 test failed

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

### LLVM
<details>
<summary>LLVM.CodeGen/AMDGPU/mark-last-scratch-load.ll</summary>

```
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 2
c:\_work\llvm-project\llvm-project\build\bin\llc.exe -mtriple=amdgcn -mcpu=gfx1201 -o - C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\AMDGPU\mark-last-scratch-load.ll | c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\AMDGPU\mark-last-scratch-load.ll
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\llc.exe' -mtriple=amdgcn -mcpu=gfx1201 -o - 'C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\AMDGPU\mark-last-scratch-load.ll'
# .---command stderr------------
# | 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 -mtriple=amdgcn -mcpu=gfx1201 -o - C:\\_work\\llvm-project\\llvm-project\\llvm\\test\\CodeGen\\AMDGPU\\mark-last-scratch-load.ll
# | 1.	Running pass 'CallGraph Pass Manager' on module 'C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\AMDGPU\mark-last-scratch-load.ll'.
# | 2.	Running pass 'AMDGPU Mark Last Scratch Load' on function '@baz'
# | Exception Code: 0xC000001D
# |  #0 0x00007ff797e8fb96 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x2cefb96)
# |  #1 0x00007ffbd972bb04 (C:\Windows\System32\ucrtbase.dll+0x7bb04)
# |  #2 0x00007ffbd972cad1 (C:\Windows\System32\ucrtbase.dll+0x7cad1)
# |  #3 0x00007ff79602f32f (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0xe8f32f)
# |  #4 0x00007ff79602f643 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0xe8f643)
# |  #5 0x00007ff795be5a63 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0xa45a63)
# |  #6 0x00007ff7956588f9 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x4b88f9)
# |  #7 0x00007ff797341d66 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x21a1d66)
# |  #8 0x00007ff795659578 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x4b9578)
# |  #9 0x00007ff7951a7908 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x7908)
# | #10 0x00007ff7951a4b76 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x4b76)
# | #11 0x00007ff7999580c0 (c:\_work\llvm-project\llvm-project\build\bin\llc.exe+0x47b80c0)
# | #12 0x00007ffbdee64cb0 (C:\Windows\System32\KERNEL32.DLL+0x14cb0)
# | #13 0x00007ffbe9f7edcb (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\AMDGPU\mark-last-scratch-load.ll'
# .---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\AMDGPU\mark-last-scratch-load.ll
# `-----------------------------
# 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/185430