carbon-lang/toolchain/lower/testdata/function/call/empty_tuple.carbon

// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/function/call/empty_tuple.carbon
// TIP: To dump output, run:
// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/function/call/empty_tuple.carbon

fn Echo(a: ()) -> () {
  return a;
}

fn Main() {
  var b: () = Echo(());
}

// CHECK:STDOUT: ; ModuleID = 'empty_tuple.carbon'
// CHECK:STDOUT: source_filename = "empty_tuple.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: define void @Echo() {
// CHECK:STDOUT: entry:
// CHECK:STDOUT:   ret void
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: define void @Main() {
// CHECK:STDOUT: entry:
// CHECK:STDOUT:   %b.var = alloca {}, align 8
// CHECK:STDOUT:   call void @Echo()
// CHECK:STDOUT:   ret void
// CHECK:STDOUT: }