albus-droid wrote:
Thanks for the review. I’ve implemented all the requested changes but still
have a few questions:
* Originally, using `IVTy` to query the iteration variable’s width always
returned “32-bit int,” even if the loop was declared as `char` or `short`. As a
result, errors only appeared when the factor exceeded 32 bits, and the
diagnostic always said “int (32 bits).” However, when the loop variable was
`long`, the code compiled successfully, so larger types were recognized. I’m
not sure whether this was due to how I was reading the type or something else.
* In the current implementation I switched to using `OrigVar->getType()` to get
the variable’s `QualType`. Now `getTypeSize()` correctly returns 8 bits for
`char`, 16 for `short`, 64 for `long`, etc. That means code like
```cpp
#pragma omp unroll partial(0xFFFFF)
for (char i = 0; …) { }
```
now rejects, whereas it used to compile.
* One remaining concern: the bit-width check treats all iteration variables as
unsigned. It doesn’t account for signed types. Should I add a separate
signed-range check, as suggested here in this
[comment](https://github.com/llvm/llvm-project/issues/139268#issuecomment-2867068205)?
https://github.com/llvm/llvm-project/pull/139986
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