SKIP: FAILED

#include <metal_stdlib>
using namespace metal;

thread float2x4 u = float2x4(float4(1.0f, 2.0f, 3.0f, 4.0f), float4(5.0f, 6.0f, 7.0f, 8.0f));
void f() {
  half2x4 v = half2x4(u);
}
program_source:4:17: error: program scope variable must reside in constant address space
thread float2x4 u = float2x4(float4(1.0f, 2.0f, 3.0f, 4.0f), float4(5.0f, 6.0f, 7.0f, 8.0f));
                ^
program_source:6:11: warning: unused variable 'v' [-Wunused-variable]
  half2x4 v = half2x4(u);
          ^