| Issue |
172600
|
| Summary |
[LoongArch] Crash when running the LoongArch Optimize W Instructions pass
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
SixWeining
|
llvm commit: f734cebc396bfb0a3523d205071764f689432ab4
testcase: [reduced.ll.txt](https://github.com/user-attachments/files/24205982/reduced.ll.txt) (rename it to `reduced.ll`) (This is a test case simplified from ffmpeg's source code h264dsp_lasx.c)
```
$ _build/bin/llc reduced.ll
llc: /home/user/llvm-project/llvm/include/llvm/CodeGen/Register.h:88: unsigned int llvm::Register::virtRegIndex() const: Assertion `isVirtual() && "Not a virtual register"' failed.
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: /home/user/llvm-project/_build/bin/llc reduced.ll
1. Running pass 'Function Pass Manager' on module 'reduced.ll'.
2. Running pass 'LoongArch Optimize W Instructions' on function '@ff_h264_v_lpf_luma_8_lasx'
^C
```
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