SKIP: FAILED Validation Failure: void isNan_4d280d() { vector res = isnan(float4(0.0f, 0.0f, 0.0f, 0.0f)); } void vertex_main() { isNan_4d280d(); return; } void fragment_main() { isNan_4d280d(); return; } [numthreads(1, 1, 1)] void compute_main() { isNan_4d280d(); return; } dxc: /build/directxshadercompiler-1.4.0.2274-413-1lunarg18.04/include/llvm/Support/Casting.h:238: typename llvm::cast_retty::ret_type llvm::cast(Y*) [with X = llvm::ConstantFP; Y = llvm::Value; typename llvm::cast_retty::ret_type = llvm::ConstantFP*]: Assertion `isa(Val) && "cast() argument of incompatible type!"' failed. dxc: /build/directxshadercompiler-1.4.0.2274-413-1lunarg18.04/include/llvm/Support/Casting.h:238: typename llvm::cast_retty::ret_type llvm::cast(Y*) [with X = llvm::ConstantFP; Y = llvm::Value; typename llvm::cast_retty::ret_type = llvm::ConstantFP*]: Assertion `isa(Val) && "cast() argument of incompatible type!"' failed. dxc: /build/directxshadercompiler-1.4.0.2274-413-1lunarg18.04/include/llvm/Support/Casting.h:238: typename llvm::cast_retty::ret_type llvm::cast(Y*) [with X = llvm::ConstantFP; Y = llvm::Value; typename llvm::cast_retty::ret_type = llvm::ConstantFP*]: Assertion `isa(Val) && "cast() argument of incompatible type!"' failed.