| Issue |
168737
|
| Summary |
[Matrix][HLSL] Disallow Matrix as an HLSL Elementwise cast
|
| Labels |
clang:frontend,
HLSL
|
| Assignees |
farzonl
|
| Reporter |
farzonl
|
> This case needs to be a part of the tests
> ```
> export int3x2 fn_helper(float2x3 f23) {
> int3x2 i32 = (int3x2)f23;
> return i32;
> }
> ```
> ```
> <source>:3:18: error: cannot convert from 'float2x3' to 'int3x2'
> int3x2 i32 = (int3x2)f23;
> ```
> https://godbolt.org/z/anTMGGGc9
_Originally posted by @farzonl in [#162711](https://github.com/llvm/llvm-project/issues/162711#issuecomment-3549912958)_
`CanPerformElementwiseCast` in clang/lib/Sema/SemaHLSL.cpp defaults to true. Meaning right now we are erroneously makring all matrix casts as elementwise cast. Now that we have a new type in ConstantMantrix we need to check for this inside of `CanPerformElementwiseCast`.
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