| Issue |
144608
|
| Summary |
[DirectX] DXIL Data Scalarization is not scalarizing GEP for an array of vectors
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
Icohedron
|
The following shader compiles without error under clang, but fails validation
https://godbolt.org/z/Tnq16cMxh
```hlsl
uint foo(uint2 v[2], uint i) { return v[i]; }
RWStructuredBuffer<uint> output;
[numthreads(1, 1, 1)]
void CSMain(uint3 Tid : SV_DispatchThreadID) {
uint2 v[2] = {Tid.xy, Tid.yx};
output[Tid.z] = foo(v, Tid.z);
}
```
Validation error:
```
Invalid record
Validation failed.
```
The validation error is likely due to this GEP in the resulting DXIL
```llvm
%13 = getelementptr inbounds nuw [2 x <2 x i32>], ptr %12, i32 0, i32 %7, !dbg !106
```
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