| Issue |
145571
|
| Summary |
[DXIL] IsSpecialFloat for 16-bit types must be emulated
|
| Labels |
backend:DirectX
|
| Assignees |
|
| Reporter |
llvm-beanz
|
Due to a [bug in DXC](https://github.com/microsoft/DirectXShaderCompiler/issues/7496), the `IsSpecialFloat` DXIL operations were never generated for 16-bit types. As a result drivers are not able to handle the operation, so we need to update Clang to emulate the functions using integers.
We are also tracking a change for SM 6.9 to address this issue (https://github.com/microsoft/hlsl-specs/issues/521).
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