| Issue |
171132
|
| Summary |
clang frontend missing nounwind for extern "C" functions
|
| Labels |
clang:codegen,
missed-optimization
|
| Assignees |
|
| Reporter |
NewSigma
|
Clang frontend failed to emit `unwind` attribute for `fn()`. The behavior is inconsistent to GCC. [godbolt](https://godbolt.org/z/cezrzP6Ys)
``` C++
extern "C" {
void fn();
}
void call() noexcept {
fn();
}
```
Expected behavior: Generate code that is as efficient as GCC.
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