Invalid OpPtrAccessChain into a Function Storage pointer

[bmanga]

The following:

struct InstanceTest
{
  uint data1_;
  uint data2_;
  uint data3_;
};

__kernel void test(__global InstanceTest* dst)
{
  const size_t index = get_global_id(0);
  InstanceTest instances[2];

  if (index < 2) {
    dst[index] = instances[index];
  }
}

Generates a OpPtrAccessChain into a function storage pointer:

%35 = OpPtrAccessChain %_ptr_Function_uint %33 %uint_3

https://gcc.godbolt.org/z/oz5MGoWd5

I don't think this is valid.
See also #135