carbon-lang/toolchain/check/testdata/if/unreachable_fallthrough.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

fn If(b: bool) -> i32 {
  if (b) {
    return 1;
  } else {
    return 2;
  }
  // Missing return here is OK.
}

// CHECK:STDOUT: --- unreachable_fallthrough.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %If: type = fn_type @If [template]
// CHECK:STDOUT:   %.1: type = tuple_type () [template]
// CHECK:STDOUT:   %struct: If = struct_value () [template]
// CHECK:STDOUT:   %.2: i32 = int_literal 1 [template]
// CHECK:STDOUT:   %.3: i32 = int_literal 2 [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [template] {
// CHECK:STDOUT:     .Core = %Core
// CHECK:STDOUT:     .If = %If.decl
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %Core: <namespace> = namespace [template] {}
// CHECK:STDOUT:   %If.decl: If = fn_decl @If [template = constants.%struct] {
// CHECK:STDOUT:     %b.loc7_7.1: bool = param b
// CHECK:STDOUT:     @If.%b: bool = bind_name b, %b.loc7_7.1
// CHECK:STDOUT:     @If.%return: ref i32 = var <return slot>
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @If(%b: bool) -> i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   %b.ref: bool = name_ref b, %b
// CHECK:STDOUT:   if %b.ref br !if.then else br !if.else
// CHECK:STDOUT:
// CHECK:STDOUT: !if.then:
// CHECK:STDOUT:   %.loc9: i32 = int_literal 1 [template = constants.%.2]
// CHECK:STDOUT:   return %.loc9
// CHECK:STDOUT:
// CHECK:STDOUT: !if.else:
// CHECK:STDOUT:   %.loc11: i32 = int_literal 2 [template = constants.%.3]
// CHECK:STDOUT:   return %.loc11
// CHECK:STDOUT: }
// CHECK:STDOUT: