| Issue |
171263
|
| Summary |
[clang] Add `__builtin_fmaximum` which lowers to `llvm.maximum`
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
eisenwave
|
This is a feature request.
Currently, there exists a `__builtin_fmax` and a `__builtin_fmaximum_num` to implement the corresponding `<math.h>` functions, but there exists no `__builtin_fmaximum`.
Such a portable builtin would be quite useful:
- it implements `fmaximum` / `std::fmaximum` directly
- it already has a portable `llvm.maximum` intrinsic backing it
- on WASM, it lowers to a single `f32.max` or `f64.max` instruction
- on ARMv8, I think it lowers directly to `fmax`, though I'd need to double-check that
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