[llvm] [SelectionDAG] Fix condition used for unsigned subtraction overflow (PR #170896)

[via llvm-commits]

aabhinavg1 wrote:


Hi @jayfoad,
The `AMDGPU` test case due to which CI job is failing is at location:

```
$LLVM_SOURCE/llvm/test/CodeGen/AMDGPU/carryout-selection.ll
```

I tried updating the checks using the standard script:

```python
python3 ./llvm/utils/update_llc_test_checks.py \
  ./llvm/test/CodeGen/AMDGPU/carryout-selection.ll
```

Is this the correct way to update AMDGPU test cases, or does AMD follow a different mechanism for generating/refreshing these tests?


https://github.com/llvm/llvm-project/pull/170896