// RUN: mlir-translate -mlir-to-cpp %s | FileCheck %s -check-prefix=CPP-DEFAULT
// RUN: mlir-translate -mlir-to-cpp -declare-variables-at-top %s | FileCheck %s -check-prefix=CPP-DECLTOP

func.func @std_call() {
  %0 = call @one_result () : () -> i32
  %1 = call @one_result () : () -> i32
  return
}
// CPP-DEFAULT: void std_call() {
// CPP-DEFAULT-NEXT: int32_t [[V0:[^ ]*]] = one_result();
// CPP-DEFAULT-NEXT: int32_t [[V1:[^ ]*]] = one_result();

// CPP-DECLTOP: void std_call() {
// CPP-DECLTOP-NEXT: int32_t [[V0:[^ ]*]];
// CPP-DECLTOP-NEXT: int32_t [[V1:[^ ]*]];
// CPP-DECLTOP-NEXT: [[V0]] = one_result();
// CPP-DECLTOP-NEXT: [[V1]] = one_result();


func.func @std_call_two_results() {
  %0:2 = call @two_results () : () -> (i32, f32)
  %1:2 = call @two_results () : () -> (i32, f32)
  return
}
// CPP-DEFAULT: void std_call_two_results() {
// CPP-DEFAULT-NEXT: int32_t [[V1:[^ ]*]];
// CPP-DEFAULT-NEXT: float [[V2:[^ ]*]];
// CPP-DEFAULT-NEXT: std::tie([[V1]], [[V2]]) = two_results();
// CPP-DEFAULT-NEXT: int32_t [[V3:[^ ]*]];
// CPP-DEFAULT-NEXT: float [[V4:[^ ]*]];
// CPP-DEFAULT-NEXT: std::tie([[V3]], [[V4]]) = two_results();

// CPP-DECLTOP: void std_call_two_results() {
// CPP-DECLTOP-NEXT: int32_t [[V1:[^ ]*]];
// CPP-DECLTOP-NEXT: float [[V2:[^ ]*]];
// CPP-DECLTOP-NEXT: int32_t [[V3:[^ ]*]];
// CPP-DECLTOP-NEXT: float [[V4:[^ ]*]];
// CPP-DECLTOP-NEXT: std::tie([[V1]], [[V2]]) = two_results();
// CPP-DECLTOP-NEXT: std::tie([[V3]], [[V4]]) = two_results();


func.func @one_result() -> i32 {
  %0 = "emitc.constant"() <{value = 0 : i32}> : () -> i32
  return %0 : i32
}
// CPP-DEFAULT: int32_t one_result() {
// CPP-DEFAULT-NEXT: int32_t [[V0:[^ ]*]] = 0;
// CPP-DEFAULT-NEXT: return [[V0]];

// CPP-DECLTOP: int32_t one_result() {
// CPP-DECLTOP-NEXT: int32_t [[V0:[^ ]*]];
// CPP-DECLTOP-NEXT: [[V0]] = 0;
// CPP-DECLTOP-NEXT: return [[V0]];


func.func @two_results() -> (i32, f32) {
  %0 = "emitc.constant"() <{value = 0 : i32}> : () -> i32
  %1 = "emitc.constant"() <{value = 1.0 : f32}> : () -> f32
  return %0, %1 : i32, f32
}
// CPP-DEFAULT: std::tuple<int32_t, float> two_results() {
// CPP-DEFAULT: int32_t [[V0:[^ ]*]] = 0;
// CPP-DEFAULT: float [[V1:[^ ]*]] = 1.000000000e+00f;
// CPP-DEFAULT: return std::make_tuple([[V0]], [[V1]]);

// CPP-DECLTOP: std::tuple<int32_t, float> two_results() {
// CPP-DECLTOP: int32_t [[V0:[^ ]*]];
// CPP-DECLTOP: float [[V1:[^ ]*]];
// CPP-DECLTOP: [[V0]] = 0;
// CPP-DECLTOP: [[V1]] = 1.000000000e+00f;
// CPP-DECLTOP: return std::make_tuple([[V0]], [[V1]]);


func.func @single_return_statement(%arg0 : i32) -> i32 {
  return %arg0 : i32
}
// CPP-DEFAULT: int32_t single_return_statement(int32_t [[V0:[^ ]*]]) {
// CPP-DEFAULT-NEXT: return [[V0]];

// CPP-DECLTOP: int32_t single_return_statement(int32_t [[V0:[^ ]*]]) {
// CPP-DECLTOP-NEXT: return [[V0]];