[llvm-branch-commits] [clang] [HLSL][Matrix] Add implicit matrix floating-point conversion checks (PR #179568)

[Deric C. via llvm-branch-commits]

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@@ -239,6 +239,7 @@ void matOrVec3(float4x4 F) {}
 export void Case8(float2x3 f23, float4x4 f44, float3x3 f33, float3x2 f32) {
   int2x2 i22 = f23;
   // expected-warning at -1{{implicit conversion truncates matrix: 'float2x3' (aka 'matrix<float, 2, 3>') to 'int2x2' (aka 'matrix<int, 2, 2>')}}
+  // expected-warning at -2{{implicit conversion turns floating-point number into integer: 'float2x3' (aka 'matrix<float, 2, 3>') to 'int2x2' (aka 'matrix<int, 2, 2>')}}
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Icohedron wrote:

The existing analogous tests for vector and scalars do not exercise int16 types.
So if we want to exercise warnings for int16 then that should be done in a separate PR for vectors and scalars as well. 

https://github.com/llvm/llvm-project/pull/179568