<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/125605>125605</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Implement the `or` HLSL Function
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            metabug,
            HLSL,
            bot:HLSL
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          farzonl
      </td>
    </tr>
</table>

<pre>
    - [ ] Implement the `or`  api in `hlsl_intrinsics.h`
- [ ] If a clang builtin is needed add sema checks for `or` to `CheckHLSLBuiltinFunctionCall` in `SemaHLSL.cpp`
- [ ] If codegen is needed, add codegen for `or` to `EmitHLSLBuiltinExpr` in `CGBuiltin.cpp`
- [ ] Add codegen tests to `clang/test/CodeGenHLSL/builtins/or.hlsl`
- [ ] Add sema tests to `clang/test/SemaHLSL/BuiltIns/or-errors.hlsl`

## DirectX

There were no DXIL opcodes found for `or`.

## SPIR-V

There were no SPIR-V opcodes found for `or`.

## Test Case(s)

 
 ### Example 1
```hlsl
//dxc or_test.hlsl -T lib_6_8 -enable-16bit-types -O0

export bool4 fn(bool4 p1, bool4 p2) {
    return or(p1, p2);
}
```
## HLSL:

Logically `or`s a vector and produces a bool vector output


## Syntax


```syntax
bool<> or(bool<> x, bool<> y);
```


## Type Description

| Name  | [**Template Type**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/../direct3dhlsl/dx-graphics-hlsl-data-types.md)| [**Component Type**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/../direct3dhlsl/dx-graphics-hlsl-data-types.md) | Size |
|-------|--------------------------------------------------------------------|----------------------------------------------------------------------|------|
| *ret* | [**scalar**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/../direct3dhlsl/dx-graphics-hlsl-scalar.md), [**vector**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/../direct3dhlsl/dx-graphics-hlsl-vector.md), or [**matrix**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/../direct3dhlsl/dx-graphics-hlsl-matrix.md) | **bool** | any |
| *x* | [**scalar**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/../direct3dhlsl/dx-graphics-hlsl-scalar.md), [**vector**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/../direct3dhlsl/dx-graphics-hlsl-vector.md), or [**matrix**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/../direct3dhlsl/dx-graphics-hlsl-matrix.md) | **bool** | any |
| *y* | [**scalar**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/../direct3dhlsl/dx-graphics-hlsl-scalar.md), [**vector**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/../direct3dhlsl/dx-graphics-hlsl-vector.md), or [**matrix**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/../direct3dhlsl/dx-graphics-hlsl-matrix.md) | **bool** | any |

## Minimum Shader Model

This function is supported in the following shader models.
|Shader Model | Supported|
|-------------|----------|
|All Shader Models with HLSL 2021 Language Mode  | yes |

## Shader Stages

**All Shader Stages**

## Remarks

In HLSL 2021 `or(X, Y);` is a replacement for
```hlsl
int3 X = {1, 1, 1};
int3 Y = {0, 0, 0};
bool3 Cond = X || Y;
```

## See also


- [**Intrinsic Functions (DirectX HLSL)**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/../direct3dhlsl/dx-graphics-hlsl-intrinsic-functions.md)
- **See [HLSL 2021 Logical operation short-circuiting for scalars](https://github.com/microsoft/DirectXShaderCompiler/wiki/HLSL-2021#logical-operation-short-circuiting-for-scalars)**
</pre>
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