<dawn>/test/tint/diagnostic_filtering/if_body_attribute.wgsl:7:9 warning: 'textureSample' must only be called from uniform control flow
    _ = textureSample(t, s, vec2(0, 0));
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

<dawn>/test/tint/diagnostic_filtering/if_body_attribute.wgsl:6:3 note: control flow depends on possibly non-uniform value
  if (x > 0) @diagnostic(warning, derivative_uniformity) {
  ^^

<dawn>/test/tint/diagnostic_filtering/if_body_attribute.wgsl:6:7 note: user-defined input 'x' of 'main' may be non-uniform
  if (x > 0) @diagnostic(warning, derivative_uniformity) {
      ^

#include <metal_stdlib>

using namespace metal;
struct tint_symbol_2 {
  float x [[user(locn0)]];
};

void tint_symbol_inner(float x, texture2d<float, access::sample> tint_symbol_3, sampler tint_symbol_4) {
  if ((x > 0.0f)) {
    float4 const tint_phony = tint_symbol_3.sample(tint_symbol_4, float2(0.0f));
  }
}

fragment void tint_symbol(texture2d<float, access::sample> tint_symbol_5 [[texture(0)]], sampler tint_symbol_6 [[sampler(0)]], tint_symbol_2 tint_symbol_1 [[stage_in]]) {
  tint_symbol_inner(tint_symbol_1.x, tint_symbol_5, tint_symbol_6);
  return;
}