<dawn>/test/tint/diagnostic_filtering/while_loop_attribute.wgsl:5:21 warning: 'dpdx' must only be called from uniform control flow
  while (x > 0.0 && dpdx(1.0) > 0.0)  {
                    ^^^^^^^^^

<dawn>/test/tint/diagnostic_filtering/while_loop_attribute.wgsl:5:3 note: control flow depends on possibly non-uniform value
  while (x > 0.0 && dpdx(1.0) > 0.0)  {
  ^^^^^

<dawn>/test/tint/diagnostic_filtering/while_loop_attribute.wgsl:5:21 note: return value of 'dpdx' may be non-uniform
  while (x > 0.0 && dpdx(1.0) > 0.0)  {
                    ^^^^^^^^^

#include <metal_stdlib>
using namespace metal;

struct tint_symbol_inputs {
  float x [[user(locn0)]];
};

void tint_symbol_inner(float x) {
  float4 v = float4(0.0f);
  {
    while(true) {
      bool v_1 = false;
      if ((x > 0.0f)) {
        v_1 = (dfdx(1.0f) > 0.0f);
      } else {
        v_1 = false;
      }
      if (v_1) {
      } else {
        break;
      }
      {
      }
      continue;
    }
  }
}

fragment void tint_symbol(tint_symbol_inputs inputs [[stage_in]]) {
  tint_symbol_inner(inputs.x);
}