<dawn>/test/tint/diagnostic_filtering/function_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/function_attribute.wgsl:6:3 note: control flow depends on possibly non-uniform value
  if (x > 0) {
  ^^

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

#include <metal_stdlib>
using namespace metal;

struct tint_module_vars_struct {
  texture2d<float, access::sample> t;
  sampler s;
};

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

void tint_symbol_inner(float x, tint_module_vars_struct tint_module_vars) {
  if ((x > 0.0f)) {
    tint_module_vars.t.sample(tint_module_vars.s, float2(0.0f));
  }
}

fragment void tint_symbol(tint_symbol_inputs inputs [[stage_in]], texture2d<float, access::sample> t [[texture(0)]], sampler s [[sampler(0)]]) {
  tint_module_vars_struct const tint_module_vars = tint_module_vars_struct{.t=t, .s=s};
  tint_symbol_inner(inputs.x, tint_module_vars);
}