DirectXShaderCompiler/tools/clang/test/CodeGenSPIRV/oo.class.method.hlsl

// Run: %dxc -T vs_6_0 -E main

class S {
  float    a;
  float3   b;

  // Not referencing members
  float fn_no_ref() {
    return 4.2;
  }

  // Referencing members
  float fn_ref() {
    return a + this.b[0];
  }

  // Calling a method defined later
  float fn_call(float c) {
    return fn_param(c);
  }

  // Passing in parameters
  float fn_param(float c) {
    return a + c;
  }

  // Unused method
  float fn_unused() {
    return 2.4;
  }

  // Static method
  static float fn_static() {
    return 3.5;
  }
};

class T {
  S s;

  // Calling method in nested class
  float fn_nested() {
    return s.fn_ref();
  }

  // Static method with the same name as S
  static float fn_static() {
    return 6.7;
  }

  // Get inner object
  S get_S() {
    return s;
  }
};

T foo() {
  T t;
  return t;
}

// CHECK:     [[ft_f32:%\d+]] = OpTypeFunction %float
// CHECK:       [[ft_S:%\d+]] = OpTypeFunction %float %_ptr_Function_S
// CHECK:   [[ft_S_f32:%\d+]] = OpTypeFunction %float %_ptr_Function_S %_ptr_Function_float
// CHECK:       [[ft_T:%\d+]] = OpTypeFunction %float %_ptr_Function_T
// CHECK:  [[fooFnType:%\d+]] = OpTypeFunction %T
// CHECK: [[getSFntype:%\d+]] = OpTypeFunction %S %_ptr_Function_T

float main() : A {

// CHECK-LABEL:   %src_main = OpFunction
// CHECK-NEXT:    %bb_entry = OpLabel
// CHECK-NEXT:           %s = OpVariable %_ptr_Function_S Function
// CHECK-NEXT:           %t = OpVariable %_ptr_Function_T Function
// CHECK-NEXT:          %f1 = OpVariable %_ptr_Function_float Function
// CHECK-NEXT: %param_var_c = OpVariable %_ptr_Function_float Function
// CHECK-NEXT:          %f2 = OpVariable %_ptr_Function_float Function
// CHECK-NEXT:  %temp_var_T = OpVariable %_ptr_Function_T Function
// CHECK-NEXT:  %temp_var_S = OpVariable %_ptr_Function_S Function
    S s;
    T t;

// CHECK:          {{%\d+}} = OpFunctionCall %float %S_fn_no_ref %s
// CHECK:          {{%\d+}} = OpFunctionCall %float %S_fn_ref %s
// CHECK:          {{%\d+}} = OpFunctionCall %float %S_fn_call %s %param_var_c
// CHECK:          {{%\d+}} = OpFunctionCall %float %T_fn_nested %t
// CHECK:          {{%\d+}} = OpFunctionCall %float %S_fn_static
// CHECK:          {{%\d+}} = OpFunctionCall %float %T_fn_static
// CHECK:          {{%\d+}} = OpFunctionCall %float %S_fn_static
// CHECK:          {{%\d+}} = OpFunctionCall %float %T_fn_static
  float f1 = s.fn_no_ref() + s.fn_ref() + s.fn_call(5.0) + t.fn_nested() +
             s.fn_static() + t.fn_static() + S::fn_static() + T::fn_static();

// CHECK:      [[temp_T:%\d+]] = OpFunctionCall %T %foo
// CHECK-NEXT:                   OpStore %temp_var_T [[temp_T]]
// CHECK-NEXT: [[temp_S:%\d+]] = OpFunctionCall %S %T_get_S %temp_var_T
// CHECK-NEXT:                   OpStore %temp_var_S [[temp_S]]
// CHECK-NEXT:        {{%\d+}} = OpFunctionCall %float %S_fn_ref %temp_var_S
  float f2 = foo().get_S().fn_ref();

  return f1;
// CHECK:                     OpFunctionEnd
}

// CHECK:       %S_fn_no_ref = OpFunction %float None [[ft_S]]
// CHECK-NEXT:   %param_this = OpFunctionParameter %_ptr_Function_S
// CHECK-NEXT:   %bb_entry_0 = OpLabel
// CHECK:                      OpFunctionEnd


// CHECK:          %S_fn_ref = OpFunction %float None [[ft_S]]
// CHECK-NEXT: %param_this_0 = OpFunctionParameter %_ptr_Function_S
// CHECK-NEXT:   %bb_entry_1 = OpLabel
// CHECK:           {{%\d+}} = OpAccessChain %_ptr_Function_float %param_this_0 %int_0
// CHECK:           {{%\d+}} = OpAccessChain %_ptr_Function_float %param_this_0 %int_1 %uint_0
// CHECK:                      OpFunctionEnd


// CHECK:          %S_fn_call = OpFunction %float None [[ft_S_f32]]
// CHECK-NEXT:  %param_this_1 = OpFunctionParameter %_ptr_Function_S
// CHECK-NEXT:             %c = OpFunctionParameter %_ptr_Function_float
// CHECK-NEXT:    %bb_entry_2 = OpLabel
// CHECK-NEXT: %param_var_c_0 = OpVariable %_ptr_Function_float Function
// CHECK:            {{%\d+}} = OpFunctionCall %float %S_fn_param %param_this_1 %param_var_c_0
// CHECK:                       OpFunctionEnd

// CHECK:       %T_fn_nested = OpFunction %float None [[ft_T]]
// CHECK-NEXT: %param_this_2 = OpFunctionParameter %_ptr_Function_T
// CHECK-NEXT:   %bb_entry_3 = OpLabel
// CHECK:       [[t_s:%\d+]] = OpAccessChain %_ptr_Function_S %param_this_2 %int_0
// CHECK:           {{%\d+}} = OpFunctionCall %float %S_fn_ref [[t_s]]
// CHECK:                      OpFunctionEnd


// CHECK:        %S_fn_static = OpFunction %float None [[ft_f32]]
// CHECK-NEXT:    %bb_entry_4 = OpLabel
// CHECK:                       OpFunctionEnd


// CHECK:        %T_fn_static = OpFunction %float None [[ft_f32]]
// CHECK-NEXT:    %bb_entry_5 = OpLabel
// CHECK:                       OpFunctionEnd

// CHECK:               %foo = OpFunction %T None [[fooFnType]]
// CHECK-NEXT:   %bb_entry_6 = OpLabel
// CHECK:                      OpFunctionEnd

// CHECK:           %T_get_S = OpFunction %S None [[getSFntype]]
// CHECK-NEXT: %param_this_3 = OpFunctionParameter %_ptr_Function_T
// CHECK-NEXT:   %bb_entry_7 = OpLabel
// CHECK:                      OpFunctionEnd

// CHECK:        %S_fn_param = OpFunction %float None [[ft_S_f32]]
// CHECK-NEXT: %param_this_4 = OpFunctionParameter %_ptr_Function_S
// CHECK-NEXT:          %c_0 = OpFunctionParameter %_ptr_Function_float
// CHECK-NEXT:   %bb_entry_8 = OpLabel
// CHECK:           {{%\d+}} = OpAccessChain %_ptr_Function_float %param_this_4 %int_0
// CHECK:                      OpFunctionEnd