// 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/while/while.carbon
// TIP: To dump output, run:
// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/while/while.carbon

fn Cond() -> bool;

fn F();
fn G();
fn H();

fn While() {
  F();
  while (Cond()) {
    G();
  }
  H();
}

// CHECK:STDOUT: ; ModuleID = 'while.carbon'
// CHECK:STDOUT: source_filename = "while.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: declare i1 @Cond()
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @F()
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @G()
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @H()
// CHECK:STDOUT:
// CHECK:STDOUT: define void @While() {
// CHECK:STDOUT: entry:
// CHECK:STDOUT:   call void @F()
// CHECK:STDOUT:   br label %while.cond
// CHECK:STDOUT:
// CHECK:STDOUT: while.cond:                                       ; preds = %while.body, %entry
// CHECK:STDOUT:   %Cond.call = call i1 @Cond()
// CHECK:STDOUT:   br i1 %Cond.call, label %while.body, label %while.done
// CHECK:STDOUT:
// CHECK:STDOUT: while.body:                                       ; preds = %while.cond
// CHECK:STDOUT:   call void @G()
// CHECK:STDOUT:   br label %while.cond
// CHECK:STDOUT:
// CHECK:STDOUT: while.done:                                       ; preds = %while.cond
// CHECK:STDOUT:   call void @H()
// CHECK:STDOUT:   ret void
// CHECK:STDOUT: }