carbon-lang/toolchain/lowering/testdata/operators/and_empty_block.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
// CHECK:STDOUT: ; ModuleID = 'and_empty_block.carbon'
// CHECK:STDOUT: source_filename = "and_empty_block.carbon"
// CHECK:STDOUT:
// CHECK:STDOUT: define i1 @And(i1 %b, i1 %c) {
// CHECK:STDOUT:   br i1 %b, label %1, label %2
// CHECK:STDOUT:
// CHECK:STDOUT: 1:                                                ; preds = %0
// CHECK:STDOUT:   br label %2
// CHECK:STDOUT:
// CHECK:STDOUT: 2:                                                ; preds = %1, %0
// CHECK:STDOUT:   %3 = phi i1 [ false, %0 ], [ %c, %1 ]
// CHECK:STDOUT:   ret i1 %3
// CHECK:STDOUT: }

fn And(b: bool, c: bool) -> bool {
  // Note that in this case, we must generate an empty block so that the `phi`
  // has two distinct predecessors.
  return b and c;
}