<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Issue</th>
<td>
<a href=https://github.com/llvm/llvm-project/issues/162169>162169</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>
[HLSL] Miscompilation of `ElementWise_DequantizeLinear.*` DML shaders directly cause 110 operator test failures
</td>
</tr>
<tr>
<th>Labels</th>
<td>
miscompilation,
backend:DirectX,
HLSL
</td>
</tr>
<tr>
<th>Assignees</th>
<td>
</td>
</tr>
<tr>
<th>Reporter</th>
<td>
Icohedron
</td>
</tr>
</table>
<pre>
110 DML operator test failures consistent across devices with AMD, NVIDIA, and Intel GPUs are confirmed to be caused by the following shaders:
```
ElementWise_DequantizeLinearTyped_256_8_typed_c32_int
ElementWise_DequantizeLinearTyped_256_8_typed_c32_uint
ElementWise_DequantizeLinearTyped_256_4_typed_c32_uint
ElementWise_DequantizeLinearTyped_256_4_typed_c32_int
```
**Random sample of failing tests**
```
OperatorTests::MatrixMultiplyIntegerToFloatLargeGemm#607
OperatorTests::MatrixMultiplyIntegerToFloatLargeGemm#183
OperatorTests::MatrixMultiplyIntegerToFloatLargeGemm#136
OperatorTests::MatrixMultiplyIntegerToFloatLargeGemm#598
OperatorTests::MatrixMultiplyIntegerToFloatLargeGemm#445
OperatorTests::MatrixMultiplyIntegerToFloatLargeGemm#458
OperatorTests::MatrixMultiplyIntegerToFloatLargeGemm#186
OperatorTests::MatrixMultiplyIntegerToFloatLargeGemm#211
OperatorTests::MatrixMultiplyIntegerToFloatLargeGemm#355
OperatorTests::MatrixMultiplyIntegerToFloatLargeGemm#41
```
## Sample Reproduction
```
> ./TE.exe DirectML.Test.OperatorTests.dll /name:"OperatorTests::MatrixMultiplyIntegerToFloatLargeGemm#607" /p:DisableMetacommands=1 /logOutput:low
Test Authoring and Execution Framework v10.72 for x64
StartGroup: OperatorTests::MatrixMultiplyIntegerToFloatLargeGemm#607
Error: Output Tensor #0:
Error: Tensor Sizes: 3,3,63,15
Error: Tensor Data Type: float16
Error: Index: 0120 @00000128 [0,0,8,0]. Ref: 0.6362304688 (0x3917). DML: -92.4375000000 (0xD5C7). Abs: 93.073730. Rel: 100.688282%. Ulp: 25424
Error: Index: 0121 @00000129 [0,0,8,1]. Ref: 0.5625000000 (0x3880). DML: inf (0x7C00). Abs: inf. Rel: -nan(ind)%. Ulp: 17280
Error: Index: 0122 @00000130 [0,0,8,2]. Ref: 0.1716308594 (0x317E). DML: -0.5336914062 (0xB845). Abs: 0.705322. Rel: 132.159195%. Ulp: 31033
Error: Index: 0123 @00000131 [0,0,8,3]. Ref: 2.0683593750 (0x4023). DML: 1.7968750000 (0x3F30). Abs: 0.271484. Rel: 13.125590%. Ulp: 243
Error: Index: 0124 @00000132 [0,0,8,4]. Ref: -1.7207031250 (0xBEE2). DML: -110.6875000000 (0xD6EB). Abs: 108.966797. Rel: 98.445440%. Ulp: 6153
Error: Index: 0125 @00000133 [0,0,8,5]. Ref: 1.5742187500 (0x3E4C). DML: 1.3027343750 (0x3D36). Abs: 0.271484. Rel: 17.245658%. Ulp: 278
Error: Index: 0126 @00000134 [0,0,8,6]. Ref: 0.1311035156 (0x3032). DML: -1.7675781250 (0xBF12). Abs: 1.898682. Rel: 107.417127%. Ulp: 28960
Error: Index: 0127 @00000135 [0,0,8,7]. Ref: -0.5932617188 (0xB8BF). DML: inf (0x7C00). Abs: inf. Rel: -nan(ind)%. Ulp: 49985
Error: Index: 0128 @00000136 [0,0,8,8]. Ref: 2.2597656250 (0x4085). DML: -inf (0xFC00). Abs: inf. Rel: -nan(ind)%. Ulp: 17541
Error: 7172 / 8505 (84.326867%) of elements were found to be above tolerance.
Error: Max absolute delta: inf. Allowed absolute tolerance: 0.020000.
Error: Max relative delta: 200.000000%. Allowed relative tolerance: 1.000000%.
Error: Max ULP delta: 60203. Allowed tolerance: 6 ULPs (float16).
Error: Verify: Fail [File: C:\workspace\DirectML\SharedToolingLib\External\Test\TaefHelper\TaefHelper.cpp, Function: TaefHelper::Fail, Line: 133]
EndGroup: OperatorTests::MatrixMultiplyIntegerToFloatLargeGemm#607 [Failed]
Summary of Non-passing Tests:
OperatorTests::MatrixMultiplyIntegerToFloatLargeGemm#607 [Failed]
Summary: Total=1, Passed=0, Failed=1, Blocked=0, Not Run=0, Skipped=0
```
</pre>
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