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

[Alex Sepkowski via llvm-branch-commits]

================
@@ -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>')}}
----------------
alsepkow wrote:

Do we also want test cases for converting to 16-bit types?

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