| Issue |
145437
|
| Summary |
[DirectX] dx.rootsignatures metadata is left around, causing validation failure
|
| Labels |
backend:DirectX
|
| Assignees |
|
| Reporter |
bogner
|
Currently, the `dx.rootsignatures` metadata is never removed. This causes us to emit it into the DXIL module, which then fails validation (ie, `dxv`) because DXIL doesn't have such metadata.
To fix this, we should make the `DXILPrepare` pass depend on root and preserve root signature analysis to ensure that the analysis runs early enough, and then have that same pass do something to the effect of:
```c++
if (NamedMDNode *RootSignature = M.getNamedMetadata("dx.rootsignatures"))
RootSignature->eraseFromParent();
```
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