Update while tests, adding a bool min_prelude (#5550)

In the vein of #5455.

The bool min_prelude will probably also get used for other constructs,
like `if`.

toolchain/check/testdata/while/break_continue.carbon

@@ -1,271 +0,0 @@
-// 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/check/testdata/while/break_continue.carbon
-// TIP: To dump output, run:
-// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/while/break_continue.carbon
-
-fn A() -> bool;
-fn B() -> bool;
-fn C() -> bool;
-fn D() -> bool;
-fn E() -> bool;
-fn F() -> bool;
-fn G() -> bool;
-fn H() -> bool;
-
-fn While() {
-  while (A()) {
-    if (B()) { continue; }
-    if (C()) { break; }
-    while (D()) {
-      if (E()) { continue; }
-      if (F()) { break; }
-    }
-    if (G()) { continue; }
-    if (H()) { break; }
-  }
-}
-
-// CHECK:STDOUT: --- break_continue.carbon
-// CHECK:STDOUT:
-// CHECK:STDOUT: constants {
-// CHECK:STDOUT:   %Bool.type: type = fn_type @Bool [concrete]
-// CHECK:STDOUT:   %Bool: %Bool.type = struct_value () [concrete]
-// CHECK:STDOUT:   %pattern_type.831: type = pattern_type bool [concrete]
-// CHECK:STDOUT:   %A.type: type = fn_type @A [concrete]
-// CHECK:STDOUT:   %A: %A.type = struct_value () [concrete]
-// CHECK:STDOUT:   %B.type: type = fn_type @B [concrete]
-// CHECK:STDOUT:   %B: %B.type = struct_value () [concrete]
-// CHECK:STDOUT:   %C.type: type = fn_type @C [concrete]
-// CHECK:STDOUT:   %C: %C.type = struct_value () [concrete]
-// CHECK:STDOUT:   %D.type: type = fn_type @D [concrete]
-// CHECK:STDOUT:   %D: %D.type = struct_value () [concrete]
-// CHECK:STDOUT:   %E.type: type = fn_type @E [concrete]
-// CHECK:STDOUT:   %E: %E.type = struct_value () [concrete]
-// CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
-// CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]
-// CHECK:STDOUT:   %G.type: type = fn_type @G [concrete]
-// CHECK:STDOUT:   %G: %G.type = struct_value () [concrete]
-// CHECK:STDOUT:   %H.type: type = fn_type @H [concrete]
-// CHECK:STDOUT:   %H: %H.type = struct_value () [concrete]
-// CHECK:STDOUT:   %While.type: type = fn_type @While [concrete]
-// CHECK:STDOUT:   %While: %While.type = struct_value () [concrete]
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: imports {
-// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
-// CHECK:STDOUT:     .Bool = %Core.Bool
-// CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/...
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Core.Bool: %Bool.type = import_ref Core//prelude/types/bool, Bool, loaded [concrete = constants.%Bool]
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: file {
-// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
-// CHECK:STDOUT:     .Core = imports.%Core
-// CHECK:STDOUT:     .A = %A.decl
-// CHECK:STDOUT:     .B = %B.decl
-// CHECK:STDOUT:     .C = %C.decl
-// CHECK:STDOUT:     .D = %D.decl
-// CHECK:STDOUT:     .E = %E.decl
-// CHECK:STDOUT:     .F = %F.decl
-// CHECK:STDOUT:     .G = %G.decl
-// CHECK:STDOUT:     .H = %H.decl
-// CHECK:STDOUT:     .While = %While.decl
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Core.import = import Core
-// CHECK:STDOUT:   %A.decl: %A.type = fn_decl @A [concrete = constants.%A] {
-// CHECK:STDOUT:     %return.patt: %pattern_type.831 = return_slot_pattern [concrete]
-// CHECK:STDOUT:     %return.param_patt: %pattern_type.831 = out_param_pattern %return.patt, call_param0 [concrete]
-// CHECK:STDOUT:   } {
-// CHECK:STDOUT:     %bool.make_type: init type = call constants.%Bool() [concrete = bool]
-// CHECK:STDOUT:     %.loc11_11.1: type = value_of_initializer %bool.make_type [concrete = bool]
-// CHECK:STDOUT:     %.loc11_11.2: type = converted %bool.make_type, %.loc11_11.1 [concrete = bool]
-// CHECK:STDOUT:     %return.param: ref bool = out_param call_param0
-// CHECK:STDOUT:     %return: ref bool = return_slot %return.param
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %B.decl: %B.type = fn_decl @B [concrete = constants.%B] {
-// CHECK:STDOUT:     %return.patt: %pattern_type.831 = return_slot_pattern [concrete]
-// CHECK:STDOUT:     %return.param_patt: %pattern_type.831 = out_param_pattern %return.patt, call_param0 [concrete]
-// CHECK:STDOUT:   } {
-// CHECK:STDOUT:     %bool.make_type: init type = call constants.%Bool() [concrete = bool]
-// CHECK:STDOUT:     %.loc12_11.1: type = value_of_initializer %bool.make_type [concrete = bool]
-// CHECK:STDOUT:     %.loc12_11.2: type = converted %bool.make_type, %.loc12_11.1 [concrete = bool]
-// CHECK:STDOUT:     %return.param: ref bool = out_param call_param0
-// CHECK:STDOUT:     %return: ref bool = return_slot %return.param
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %C.decl: %C.type = fn_decl @C [concrete = constants.%C] {
-// CHECK:STDOUT:     %return.patt: %pattern_type.831 = return_slot_pattern [concrete]
-// CHECK:STDOUT:     %return.param_patt: %pattern_type.831 = out_param_pattern %return.patt, call_param0 [concrete]
-// CHECK:STDOUT:   } {
-// CHECK:STDOUT:     %bool.make_type: init type = call constants.%Bool() [concrete = bool]
-// CHECK:STDOUT:     %.loc13_11.1: type = value_of_initializer %bool.make_type [concrete = bool]
-// CHECK:STDOUT:     %.loc13_11.2: type = converted %bool.make_type, %.loc13_11.1 [concrete = bool]
-// CHECK:STDOUT:     %return.param: ref bool = out_param call_param0
-// CHECK:STDOUT:     %return: ref bool = return_slot %return.param
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %D.decl: %D.type = fn_decl @D [concrete = constants.%D] {
-// CHECK:STDOUT:     %return.patt: %pattern_type.831 = return_slot_pattern [concrete]
-// CHECK:STDOUT:     %return.param_patt: %pattern_type.831 = out_param_pattern %return.patt, call_param0 [concrete]
-// CHECK:STDOUT:   } {
-// CHECK:STDOUT:     %bool.make_type: init type = call constants.%Bool() [concrete = bool]
-// CHECK:STDOUT:     %.loc14_11.1: type = value_of_initializer %bool.make_type [concrete = bool]
-// CHECK:STDOUT:     %.loc14_11.2: type = converted %bool.make_type, %.loc14_11.1 [concrete = bool]
-// CHECK:STDOUT:     %return.param: ref bool = out_param call_param0
-// CHECK:STDOUT:     %return: ref bool = return_slot %return.param
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %E.decl: %E.type = fn_decl @E [concrete = constants.%E] {
-// CHECK:STDOUT:     %return.patt: %pattern_type.831 = return_slot_pattern [concrete]
-// CHECK:STDOUT:     %return.param_patt: %pattern_type.831 = out_param_pattern %return.patt, call_param0 [concrete]
-// CHECK:STDOUT:   } {
-// CHECK:STDOUT:     %bool.make_type: init type = call constants.%Bool() [concrete = bool]
-// CHECK:STDOUT:     %.loc15_11.1: type = value_of_initializer %bool.make_type [concrete = bool]
-// CHECK:STDOUT:     %.loc15_11.2: type = converted %bool.make_type, %.loc15_11.1 [concrete = bool]
-// CHECK:STDOUT:     %return.param: ref bool = out_param call_param0
-// CHECK:STDOUT:     %return: ref bool = return_slot %return.param
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {
-// CHECK:STDOUT:     %return.patt: %pattern_type.831 = return_slot_pattern [concrete]
-// CHECK:STDOUT:     %return.param_patt: %pattern_type.831 = out_param_pattern %return.patt, call_param0 [concrete]
-// CHECK:STDOUT:   } {
-// CHECK:STDOUT:     %bool.make_type: init type = call constants.%Bool() [concrete = bool]
-// CHECK:STDOUT:     %.loc16_11.1: type = value_of_initializer %bool.make_type [concrete = bool]
-// CHECK:STDOUT:     %.loc16_11.2: type = converted %bool.make_type, %.loc16_11.1 [concrete = bool]
-// CHECK:STDOUT:     %return.param: ref bool = out_param call_param0
-// CHECK:STDOUT:     %return: ref bool = return_slot %return.param
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %G.decl: %G.type = fn_decl @G [concrete = constants.%G] {
-// CHECK:STDOUT:     %return.patt: %pattern_type.831 = return_slot_pattern [concrete]
-// CHECK:STDOUT:     %return.param_patt: %pattern_type.831 = out_param_pattern %return.patt, call_param0 [concrete]
-// CHECK:STDOUT:   } {
-// CHECK:STDOUT:     %bool.make_type: init type = call constants.%Bool() [concrete = bool]
-// CHECK:STDOUT:     %.loc17_11.1: type = value_of_initializer %bool.make_type [concrete = bool]
-// CHECK:STDOUT:     %.loc17_11.2: type = converted %bool.make_type, %.loc17_11.1 [concrete = bool]
-// CHECK:STDOUT:     %return.param: ref bool = out_param call_param0
-// CHECK:STDOUT:     %return: ref bool = return_slot %return.param
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %H.decl: %H.type = fn_decl @H [concrete = constants.%H] {
-// CHECK:STDOUT:     %return.patt: %pattern_type.831 = return_slot_pattern [concrete]
-// CHECK:STDOUT:     %return.param_patt: %pattern_type.831 = out_param_pattern %return.patt, call_param0 [concrete]
-// CHECK:STDOUT:   } {
-// CHECK:STDOUT:     %bool.make_type: init type = call constants.%Bool() [concrete = bool]
-// CHECK:STDOUT:     %.loc18_11.1: type = value_of_initializer %bool.make_type [concrete = bool]
-// CHECK:STDOUT:     %.loc18_11.2: type = converted %bool.make_type, %.loc18_11.1 [concrete = bool]
-// CHECK:STDOUT:     %return.param: ref bool = out_param call_param0
-// CHECK:STDOUT:     %return: ref bool = return_slot %return.param
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %While.decl: %While.type = fn_decl @While [concrete = constants.%While] {} {}
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @A() -> bool;
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @B() -> bool;
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @C() -> bool;
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @D() -> bool;
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @E() -> bool;
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @F() -> bool;
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @G() -> bool;
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @H() -> bool;
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @While() {
-// CHECK:STDOUT: !entry:
-// CHECK:STDOUT:   br !while.cond.loc21
-// CHECK:STDOUT:
-// CHECK:STDOUT: !while.cond.loc21:
-// CHECK:STDOUT:   %A.ref: %A.type = name_ref A, file.%A.decl [concrete = constants.%A]
-// CHECK:STDOUT:   %A.call: init bool = call %A.ref()
-// CHECK:STDOUT:   %.loc21_13.1: bool = value_of_initializer %A.call
-// CHECK:STDOUT:   %.loc21_13.2: bool = converted %A.call, %.loc21_13.1
-// CHECK:STDOUT:   if %.loc21_13.2 br !while.body.loc21 else br !while.done.loc21
-// CHECK:STDOUT:
-// CHECK:STDOUT: !while.body.loc21:
-// CHECK:STDOUT:   %B.ref: %B.type = name_ref B, file.%B.decl [concrete = constants.%B]
-// CHECK:STDOUT:   %B.call: init bool = call %B.ref()
-// CHECK:STDOUT:   %.loc22_12.1: bool = value_of_initializer %B.call
-// CHECK:STDOUT:   %.loc22_12.2: bool = converted %B.call, %.loc22_12.1
-// CHECK:STDOUT:   if %.loc22_12.2 br !if.then.loc22 else br !if.else.loc22
-// CHECK:STDOUT:
-// CHECK:STDOUT: !if.then.loc22:
-// CHECK:STDOUT:   br !while.cond.loc21
-// CHECK:STDOUT:
-// CHECK:STDOUT: !if.else.loc22:
-// CHECK:STDOUT:   %C.ref: %C.type = name_ref C, file.%C.decl [concrete = constants.%C]
-// CHECK:STDOUT:   %C.call: init bool = call %C.ref()
-// CHECK:STDOUT:   %.loc23_12.1: bool = value_of_initializer %C.call
-// CHECK:STDOUT:   %.loc23_12.2: bool = converted %C.call, %.loc23_12.1
-// CHECK:STDOUT:   if %.loc23_12.2 br !if.then.loc23 else br !if.else.loc23
-// CHECK:STDOUT:
-// CHECK:STDOUT: !if.then.loc23:
-// CHECK:STDOUT:   br !while.done.loc21
-// CHECK:STDOUT:
-// CHECK:STDOUT: !if.else.loc23:
-// CHECK:STDOUT:   br !while.cond.loc24
-// CHECK:STDOUT:
-// CHECK:STDOUT: !while.cond.loc24:
-// CHECK:STDOUT:   %D.ref: %D.type = name_ref D, file.%D.decl [concrete = constants.%D]
-// CHECK:STDOUT:   %D.call: init bool = call %D.ref()
-// CHECK:STDOUT:   %.loc24_15.1: bool = value_of_initializer %D.call
-// CHECK:STDOUT:   %.loc24_15.2: bool = converted %D.call, %.loc24_15.1
-// CHECK:STDOUT:   if %.loc24_15.2 br !while.body.loc24 else br !while.done.loc24
-// CHECK:STDOUT:
-// CHECK:STDOUT: !while.body.loc24:
-// CHECK:STDOUT:   %E.ref: %E.type = name_ref E, file.%E.decl [concrete = constants.%E]
-// CHECK:STDOUT:   %E.call: init bool = call %E.ref()
-// CHECK:STDOUT:   %.loc25_14.1: bool = value_of_initializer %E.call
-// CHECK:STDOUT:   %.loc25_14.2: bool = converted %E.call, %.loc25_14.1
-// CHECK:STDOUT:   if %.loc25_14.2 br !if.then.loc25 else br !if.else.loc25
-// CHECK:STDOUT:
-// CHECK:STDOUT: !if.then.loc25:
-// CHECK:STDOUT:   br !while.cond.loc24
-// CHECK:STDOUT:
-// CHECK:STDOUT: !if.else.loc25:
-// CHECK:STDOUT:   %F.ref: %F.type = name_ref F, file.%F.decl [concrete = constants.%F]
-// CHECK:STDOUT:   %F.call: init bool = call %F.ref()
-// CHECK:STDOUT:   %.loc26_14.1: bool = value_of_initializer %F.call
-// CHECK:STDOUT:   %.loc26_14.2: bool = converted %F.call, %.loc26_14.1
-// CHECK:STDOUT:   if %.loc26_14.2 br !if.then.loc26 else br !if.else.loc26
-// CHECK:STDOUT:
-// CHECK:STDOUT: !if.then.loc26:
-// CHECK:STDOUT:   br !while.done.loc24
-// CHECK:STDOUT:
-// CHECK:STDOUT: !if.else.loc26:
-// CHECK:STDOUT:   br !while.cond.loc24
-// CHECK:STDOUT:
-// CHECK:STDOUT: !while.done.loc24:
-// CHECK:STDOUT:   %G.ref: %G.type = name_ref G, file.%G.decl [concrete = constants.%G]
-// CHECK:STDOUT:   %G.call: init bool = call %G.ref()
-// CHECK:STDOUT:   %.loc28_12.1: bool = value_of_initializer %G.call
-// CHECK:STDOUT:   %.loc28_12.2: bool = converted %G.call, %.loc28_12.1
-// CHECK:STDOUT:   if %.loc28_12.2 br !if.then.loc28 else br !if.else.loc28
-// CHECK:STDOUT:
-// CHECK:STDOUT: !if.then.loc28:
-// CHECK:STDOUT:   br !while.cond.loc21
-// CHECK:STDOUT:
-// CHECK:STDOUT: !if.else.loc28:
-// CHECK:STDOUT:   %H.ref: %H.type = name_ref H, file.%H.decl [concrete = constants.%H]
-// CHECK:STDOUT:   %H.call: init bool = call %H.ref()
-// CHECK:STDOUT:   %.loc29_12.1: bool = value_of_initializer %H.call
-// CHECK:STDOUT:   %.loc29_12.2: bool = converted %H.call, %.loc29_12.1
-// CHECK:STDOUT:   if %.loc29_12.2 br !if.then.loc29 else br !if.else.loc29
-// CHECK:STDOUT:
-// CHECK:STDOUT: !if.then.loc29:
-// CHECK:STDOUT:   br !while.done.loc21
-// CHECK:STDOUT:
-// CHECK:STDOUT: !if.else.loc29:
-// CHECK:STDOUT:   br !while.cond.loc21
-// CHECK:STDOUT:
-// CHECK:STDOUT: !while.done.loc21:
-// CHECK:STDOUT:   return
-// CHECK:STDOUT: }
-// CHECK:STDOUT:

toolchain/check/testdata/while/fail_bad_condition.carbon

@@ -1,65 +0,0 @@
-// 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/check/testdata/while/fail_bad_condition.carbon
-// TIP: To dump output, run:
-// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/while/fail_bad_condition.carbon
-
-fn While() {
-  // CHECK:STDERR: fail_bad_condition.carbon:[[@LINE+7]]:9: error: cannot implicitly convert expression of type `String` to `bool` [ConversionFailure]
-  // CHECK:STDERR:   while ("Hello") {}
-  // CHECK:STDERR:         ^~~~~~~~~
-  // CHECK:STDERR: fail_bad_condition.carbon:[[@LINE+4]]:9: note: type `String` does not implement interface `Core.ImplicitAs(bool)` [MissingImplInMemberAccessNote]
-  // CHECK:STDERR:   while ("Hello") {}
-  // CHECK:STDERR:         ^~~~~~~~~
-  // CHECK:STDERR:
-  while ("Hello") {}
-}
-
-// CHECK:STDOUT: --- fail_bad_condition.carbon
-// CHECK:STDOUT:
-// CHECK:STDOUT: constants {
-// CHECK:STDOUT:   %While.type: type = fn_type @While [concrete]
-// CHECK:STDOUT:   %While: %While.type = struct_value () [concrete]
-// CHECK:STDOUT:   %str: String = string_literal "Hello" [concrete]
-// CHECK:STDOUT:   %ImplicitAs.type.cc7: type = generic_interface_type @ImplicitAs [concrete]
-// CHECK:STDOUT:   %ImplicitAs.generic: %ImplicitAs.type.cc7 = struct_value () [concrete]
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: imports {
-// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
-// CHECK:STDOUT:     .ImplicitAs = %Core.ImplicitAs
-// CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/...
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Core.ImplicitAs: %ImplicitAs.type.cc7 = import_ref Core//prelude/operators/as, ImplicitAs, loaded [concrete = constants.%ImplicitAs.generic]
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: file {
-// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
-// CHECK:STDOUT:     .Core = imports.%Core
-// CHECK:STDOUT:     .While = %While.decl
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Core.import = import Core
-// CHECK:STDOUT:   %While.decl: %While.type = fn_decl @While [concrete = constants.%While] {} {}
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @While() {
-// CHECK:STDOUT: !entry:
-// CHECK:STDOUT:   br !while.cond
-// CHECK:STDOUT:
-// CHECK:STDOUT: !while.cond:
-// CHECK:STDOUT:   %str: String = string_literal "Hello" [concrete = constants.%str]
-// CHECK:STDOUT:   %.loc19: bool = converted %str, <error> [concrete = <error>]
-// CHECK:STDOUT:   if <error> br !while.body else br !while.done
-// CHECK:STDOUT:
-// CHECK:STDOUT: !while.body:
-// CHECK:STDOUT:   br !while.cond
-// CHECK:STDOUT:
-// CHECK:STDOUT: !while.done:
-// CHECK:STDOUT:   return
-// CHECK:STDOUT: }
-// CHECK:STDOUT:

toolchain/check/testdata/while/fail_break_continue.carbon

@@ -1,64 +0,0 @@
-// 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/check/testdata/while/fail_break_continue.carbon
-// TIP: To dump output, run:
-// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/while/fail_break_continue.carbon
-
-fn While() {
-  // CHECK:STDERR: fail_break_continue.carbon:[[@LINE+4]]:3: error: `continue` can only be used in a loop [ContinueOutsideLoop]
-  // CHECK:STDERR:   continue;
-  // CHECK:STDERR:   ^~~~~~~~
-  // CHECK:STDERR:
-  continue;
-  // CHECK:STDERR: fail_break_continue.carbon:[[@LINE+4]]:3: error: `break` can only be used in a loop [BreakOutsideLoop]
-  // CHECK:STDERR:   break;
-  // CHECK:STDERR:   ^~~~~
-  // CHECK:STDERR:
-  break;
-  while (false) {
-    continue;
-    break;
-  }
-  // CHECK:STDERR: fail_break_continue.carbon:[[@LINE+4]]:3: error: `continue` can only be used in a loop [ContinueOutsideLoop]
-  // CHECK:STDERR:   continue;
-  // CHECK:STDERR:   ^~~~~~~~
-  // CHECK:STDERR:
-  continue;
-  // CHECK:STDERR: fail_break_continue.carbon:[[@LINE+4]]:3: error: `break` can only be used in a loop [BreakOutsideLoop]
-  // CHECK:STDERR:   break;
-  // CHECK:STDERR:   ^~~~~
-  // CHECK:STDERR:
-  break;
-}
-
-// CHECK:STDOUT: --- fail_break_continue.carbon
-// CHECK:STDOUT:
-// CHECK:STDOUT: constants {
-// CHECK:STDOUT:   %While.type: type = fn_type @While [concrete]
-// CHECK:STDOUT:   %While: %While.type = struct_value () [concrete]
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: imports {
-// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
-// CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/...
-// CHECK:STDOUT:   }
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: file {
-// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
-// CHECK:STDOUT:     .Core = imports.%Core
-// CHECK:STDOUT:     .While = %While.decl
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Core.import = import Core
-// CHECK:STDOUT:   %While.decl: %While.type = fn_decl @While [concrete = constants.%While] {} {}
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @While() {
-// CHECK:STDOUT: !entry:
-// CHECK:STDOUT: }
-// CHECK:STDOUT:

toolchain/check/testdata/while/min_prelude/while.carbon

@@ -0,0 +1,338 @@
+// 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
+//
+// EXTRA-ARGS: --dump-sem-ir-ranges=only
+// INCLUDE-FILE: toolchain/testing/min_prelude/bool.carbon
+//
+// AUTOUPDATE
+// TIP: To test this file alone, run:
+// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/while/min_prelude/while.carbon
+// TIP: To dump output, run:
+// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/while/min_prelude/while.carbon
+
+// --- while.carbon
+library "[[@TEST_NAME]]";
+
+fn Cond() -> bool;
+
+fn F();
+fn G();
+fn H();
+
+//@dump-sem-ir-begin
+fn While() {
+  F();
+  while (Cond()) {
+    G();
+  }
+  H();
+}
+//@dump-sem-ir-end
+
+// --- unreachable_end.carbon
+library "[[@TEST_NAME]]";
+
+fn Cond() -> bool;
+
+fn F();
+fn G();
+fn H();
+
+//@dump-sem-ir-begin
+fn While() {
+  F();
+  while (Cond()) {
+    G();
+    return;
+  }
+  H();
+}
+//@dump-sem-ir-end
+
+// --- break_continue.carbon
+library "[[@TEST_NAME]]";
+
+fn A() -> bool;
+fn B() -> bool;
+fn C() -> bool;
+fn D() -> bool;
+fn E() -> bool;
+fn F() -> bool;
+fn G() -> bool;
+fn H() -> bool;
+
+//@dump-sem-ir-begin
+fn While() {
+  while (A()) {
+    if (B()) { continue; }
+    if (C()) { break; }
+    while (D()) {
+      if (E()) { continue; }
+      if (F()) { break; }
+    }
+    if (G()) { continue; }
+    if (H()) { break; }
+  }
+}
+//@dump-sem-ir-end
+
+// --- fail_bad_condition.carbon
+library "[[@TEST_NAME]]";
+
+fn While() {
+  // CHECK:STDERR: fail_bad_condition.carbon:[[@LINE+7]]:9: error: cannot implicitly convert expression of type `String` to `bool` [ConversionFailure]
+  // CHECK:STDERR:   while ("Hello") {}
+  // CHECK:STDERR:         ^~~~~~~~~
+  // CHECK:STDERR: fail_bad_condition.carbon:[[@LINE+4]]:9: note: type `String` does not implement interface `Core.ImplicitAs(bool)` [MissingImplInMemberAccessNote]
+  // CHECK:STDERR:   while ("Hello") {}
+  // CHECK:STDERR:         ^~~~~~~~~
+  // CHECK:STDERR:
+  while ("Hello") {}
+}
+
+// --- fail_bad_break_continue.carbon
+library "[[@TEST_NAME]]";
+
+fn While() {
+  // CHECK:STDERR: fail_bad_break_continue.carbon:[[@LINE+4]]:3: error: `continue` can only be used in a loop [ContinueOutsideLoop]
+  // CHECK:STDERR:   continue;
+  // CHECK:STDERR:   ^~~~~~~~
+  // CHECK:STDERR:
+  continue;
+  // CHECK:STDERR: fail_bad_break_continue.carbon:[[@LINE+4]]:3: error: `break` can only be used in a loop [BreakOutsideLoop]
+  // CHECK:STDERR:   break;
+  // CHECK:STDERR:   ^~~~~
+  // CHECK:STDERR:
+  break;
+  while (false) {
+    continue;
+    break;
+  }
+  // CHECK:STDERR: fail_bad_break_continue.carbon:[[@LINE+4]]:3: error: `continue` can only be used in a loop [ContinueOutsideLoop]
+  // CHECK:STDERR:   continue;
+  // CHECK:STDERR:   ^~~~~~~~
+  // CHECK:STDERR:
+  continue;
+  // CHECK:STDERR: fail_bad_break_continue.carbon:[[@LINE+4]]:3: error: `break` can only be used in a loop [BreakOutsideLoop]
+  // CHECK:STDERR:   break;
+  // CHECK:STDERR:   ^~~~~
+  // CHECK:STDERR:
+  break;
+}
+
+// CHECK:STDOUT: --- while.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
+// CHECK:STDOUT:   %Cond.type: type = fn_type @Cond [concrete]
+// CHECK:STDOUT:   %Cond: %Cond.type = struct_value () [concrete]
+// CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
+// CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]
+// CHECK:STDOUT:   %G.type: type = fn_type @G [concrete]
+// CHECK:STDOUT:   %G: %G.type = struct_value () [concrete]
+// CHECK:STDOUT:   %H.type: type = fn_type @H [concrete]
+// CHECK:STDOUT:   %H: %H.type = struct_value () [concrete]
+// CHECK:STDOUT:   %While.type: type = fn_type @While [concrete]
+// CHECK:STDOUT:   %While: %While.type = struct_value () [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: imports {
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: file {
+// CHECK:STDOUT:   %While.decl: %While.type = fn_decl @While [concrete = constants.%While] {} {}
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: fn @While() {
+// CHECK:STDOUT: !entry:
+// CHECK:STDOUT:   %F.ref: %F.type = name_ref F, file.%F.decl [concrete = constants.%F]
+// CHECK:STDOUT:   %F.call: init %empty_tuple.type = call %F.ref()
+// CHECK:STDOUT:   br !while.cond
+// CHECK:STDOUT:
+// CHECK:STDOUT: !while.cond:
+// CHECK:STDOUT:   %Cond.ref: %Cond.type = name_ref Cond, file.%Cond.decl [concrete = constants.%Cond]
+// CHECK:STDOUT:   %Cond.call: init bool = call %Cond.ref()
+// CHECK:STDOUT:   %.loc12_16.1: bool = value_of_initializer %Cond.call
+// CHECK:STDOUT:   %.loc12_16.2: bool = converted %Cond.call, %.loc12_16.1
+// CHECK:STDOUT:   if %.loc12_16.2 br !while.body else br !while.done
+// CHECK:STDOUT:
+// CHECK:STDOUT: !while.body:
+// CHECK:STDOUT:   %G.ref: %G.type = name_ref G, file.%G.decl [concrete = constants.%G]
+// CHECK:STDOUT:   %G.call: init %empty_tuple.type = call %G.ref()
+// CHECK:STDOUT:   br !while.cond
+// CHECK:STDOUT:
+// CHECK:STDOUT: !while.done:
+// CHECK:STDOUT:   %H.ref: %H.type = name_ref H, file.%H.decl [concrete = constants.%H]
+// CHECK:STDOUT:   %H.call: init %empty_tuple.type = call %H.ref()
+// CHECK:STDOUT:   return
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: --- unreachable_end.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
+// CHECK:STDOUT:   %Cond.type: type = fn_type @Cond [concrete]
+// CHECK:STDOUT:   %Cond: %Cond.type = struct_value () [concrete]
+// CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
+// CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]
+// CHECK:STDOUT:   %G.type: type = fn_type @G [concrete]
+// CHECK:STDOUT:   %G: %G.type = struct_value () [concrete]
+// CHECK:STDOUT:   %H.type: type = fn_type @H [concrete]
+// CHECK:STDOUT:   %H: %H.type = struct_value () [concrete]
+// CHECK:STDOUT:   %While.type: type = fn_type @While [concrete]
+// CHECK:STDOUT:   %While: %While.type = struct_value () [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: imports {
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: file {
+// CHECK:STDOUT:   %While.decl: %While.type = fn_decl @While [concrete = constants.%While] {} {}
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: fn @While() {
+// CHECK:STDOUT: !entry:
+// CHECK:STDOUT:   %F.ref: %F.type = name_ref F, file.%F.decl [concrete = constants.%F]
+// CHECK:STDOUT:   %F.call: init %empty_tuple.type = call %F.ref()
+// CHECK:STDOUT:   br !while.cond
+// CHECK:STDOUT:
+// CHECK:STDOUT: !while.cond:
+// CHECK:STDOUT:   %Cond.ref: %Cond.type = name_ref Cond, file.%Cond.decl [concrete = constants.%Cond]
+// CHECK:STDOUT:   %Cond.call: init bool = call %Cond.ref()
+// CHECK:STDOUT:   %.loc12_16.1: bool = value_of_initializer %Cond.call
+// CHECK:STDOUT:   %.loc12_16.2: bool = converted %Cond.call, %.loc12_16.1
+// CHECK:STDOUT:   if %.loc12_16.2 br !while.body else br !while.done
+// CHECK:STDOUT:
+// CHECK:STDOUT: !while.body:
+// CHECK:STDOUT:   %G.ref: %G.type = name_ref G, file.%G.decl [concrete = constants.%G]
+// CHECK:STDOUT:   %G.call: init %empty_tuple.type = call %G.ref()
+// CHECK:STDOUT:   return
+// CHECK:STDOUT:
+// CHECK:STDOUT: !while.done:
+// CHECK:STDOUT:   %H.ref: %H.type = name_ref H, file.%H.decl [concrete = constants.%H]
+// CHECK:STDOUT:   %H.call: init %empty_tuple.type = call %H.ref()
+// CHECK:STDOUT:   return
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: --- break_continue.carbon
+// CHECK:STDOUT:
+// CHECK:STDOUT: constants {
+// CHECK:STDOUT:   %A.type: type = fn_type @A [concrete]
+// CHECK:STDOUT:   %A: %A.type = struct_value () [concrete]
+// CHECK:STDOUT:   %B.type: type = fn_type @B [concrete]
+// CHECK:STDOUT:   %B: %B.type = struct_value () [concrete]
+// CHECK:STDOUT:   %C.type: type = fn_type @C [concrete]
+// CHECK:STDOUT:   %C: %C.type = struct_value () [concrete]
+// CHECK:STDOUT:   %D.type: type = fn_type @D [concrete]
+// CHECK:STDOUT:   %D: %D.type = struct_value () [concrete]
+// CHECK:STDOUT:   %E.type: type = fn_type @E [concrete]
+// CHECK:STDOUT:   %E: %E.type = struct_value () [concrete]
+// CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
+// CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]
+// CHECK:STDOUT:   %G.type: type = fn_type @G [concrete]
+// CHECK:STDOUT:   %G: %G.type = struct_value () [concrete]
+// CHECK:STDOUT:   %H.type: type = fn_type @H [concrete]
+// CHECK:STDOUT:   %H: %H.type = struct_value () [concrete]
+// CHECK:STDOUT:   %While.type: type = fn_type @While [concrete]
+// CHECK:STDOUT:   %While: %While.type = struct_value () [concrete]
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: imports {
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: file {
+// CHECK:STDOUT:   %While.decl: %While.type = fn_decl @While [concrete = constants.%While] {} {}
+// CHECK:STDOUT: }
+// CHECK:STDOUT:
+// CHECK:STDOUT: fn @While() {
+// CHECK:STDOUT: !entry:
+// CHECK:STDOUT:   br !while.cond.loc14
+// CHECK:STDOUT:
+// CHECK:STDOUT: !while.cond.loc14:
+// CHECK:STDOUT:   %A.ref: %A.type = name_ref A, file.%A.decl [concrete = constants.%A]
+// CHECK:STDOUT:   %A.call: init bool = call %A.ref()
+// CHECK:STDOUT:   %.loc14_13.1: bool = value_of_initializer %A.call
+// CHECK:STDOUT:   %.loc14_13.2: bool = converted %A.call, %.loc14_13.1
+// CHECK:STDOUT:   if %.loc14_13.2 br !while.body.loc14 else br !while.done.loc14
+// CHECK:STDOUT:
+// CHECK:STDOUT: !while.body.loc14:
+// CHECK:STDOUT:   %B.ref: %B.type = name_ref B, file.%B.decl [concrete = constants.%B]
+// CHECK:STDOUT:   %B.call: init bool = call %B.ref()
+// CHECK:STDOUT:   %.loc15_12.1: bool = value_of_initializer %B.call
+// CHECK:STDOUT:   %.loc15_12.2: bool = converted %B.call, %.loc15_12.1
+// CHECK:STDOUT:   if %.loc15_12.2 br !if.then.loc15 else br !if.else.loc15
+// CHECK:STDOUT:
+// CHECK:STDOUT: !if.then.loc15:
+// CHECK:STDOUT:   br !while.cond.loc14
+// CHECK:STDOUT:
+// CHECK:STDOUT: !if.else.loc15:
+// CHECK:STDOUT:   %C.ref: %C.type = name_ref C, file.%C.decl [concrete = constants.%C]
+// CHECK:STDOUT:   %C.call: init bool = call %C.ref()
+// CHECK:STDOUT:   %.loc16_12.1: bool = value_of_initializer %C.call
+// CHECK:STDOUT:   %.loc16_12.2: bool = converted %C.call, %.loc16_12.1
+// CHECK:STDOUT:   if %.loc16_12.2 br !if.then.loc16 else br !if.else.loc16
+// CHECK:STDOUT:
+// CHECK:STDOUT: !if.then.loc16:
+// CHECK:STDOUT:   br !while.done.loc14
+// CHECK:STDOUT:
+// CHECK:STDOUT: !if.else.loc16:
+// CHECK:STDOUT:   br !while.cond.loc17
+// CHECK:STDOUT:
+// CHECK:STDOUT: !while.cond.loc17:
+// CHECK:STDOUT:   %D.ref: %D.type = name_ref D, file.%D.decl [concrete = constants.%D]
+// CHECK:STDOUT:   %D.call: init bool = call %D.ref()
+// CHECK:STDOUT:   %.loc17_15.1: bool = value_of_initializer %D.call
+// CHECK:STDOUT:   %.loc17_15.2: bool = converted %D.call, %.loc17_15.1
+// CHECK:STDOUT:   if %.loc17_15.2 br !while.body.loc17 else br !while.done.loc17
+// CHECK:STDOUT:
+// CHECK:STDOUT: !while.body.loc17:
+// CHECK:STDOUT:   %E.ref: %E.type = name_ref E, file.%E.decl [concrete = constants.%E]
+// CHECK:STDOUT:   %E.call: init bool = call %E.ref()
+// CHECK:STDOUT:   %.loc18_14.1: bool = value_of_initializer %E.call
+// CHECK:STDOUT:   %.loc18_14.2: bool = converted %E.call, %.loc18_14.1
+// CHECK:STDOUT:   if %.loc18_14.2 br !if.then.loc18 else br !if.else.loc18
+// CHECK:STDOUT:
+// CHECK:STDOUT: !if.then.loc18:
+// CHECK:STDOUT:   br !while.cond.loc17
+// CHECK:STDOUT:
+// CHECK:STDOUT: !if.else.loc18:
+// CHECK:STDOUT:   %F.ref: %F.type = name_ref F, file.%F.decl [concrete = constants.%F]
+// CHECK:STDOUT:   %F.call: init bool = call %F.ref()
+// CHECK:STDOUT:   %.loc19_14.1: bool = value_of_initializer %F.call
+// CHECK:STDOUT:   %.loc19_14.2: bool = converted %F.call, %.loc19_14.1
+// CHECK:STDOUT:   if %.loc19_14.2 br !if.then.loc19 else br !if.else.loc19
+// CHECK:STDOUT:
+// CHECK:STDOUT: !if.then.loc19:
+// CHECK:STDOUT:   br !while.done.loc17
+// CHECK:STDOUT:
+// CHECK:STDOUT: !if.else.loc19:
+// CHECK:STDOUT:   br !while.cond.loc17
+// CHECK:STDOUT:
+// CHECK:STDOUT: !while.done.loc17:
+// CHECK:STDOUT:   %G.ref: %G.type = name_ref G, file.%G.decl [concrete = constants.%G]
+// CHECK:STDOUT:   %G.call: init bool = call %G.ref()
+// CHECK:STDOUT:   %.loc21_12.1: bool = value_of_initializer %G.call
+// CHECK:STDOUT:   %.loc21_12.2: bool = converted %G.call, %.loc21_12.1
+// CHECK:STDOUT:   if %.loc21_12.2 br !if.then.loc21 else br !if.else.loc21
+// CHECK:STDOUT:
+// CHECK:STDOUT: !if.then.loc21:
+// CHECK:STDOUT:   br !while.cond.loc14
+// CHECK:STDOUT:
+// CHECK:STDOUT: !if.else.loc21:
+// CHECK:STDOUT:   %H.ref: %H.type = name_ref H, file.%H.decl [concrete = constants.%H]
+// CHECK:STDOUT:   %H.call: init bool = call %H.ref()
+// CHECK:STDOUT:   %.loc22_12.1: bool = value_of_initializer %H.call
+// CHECK:STDOUT:   %.loc22_12.2: bool = converted %H.call, %.loc22_12.1
+// CHECK:STDOUT:   if %.loc22_12.2 br !if.then.loc22 else br !if.else.loc22
+// CHECK:STDOUT:
+// CHECK:STDOUT: !if.then.loc22:
+// CHECK:STDOUT:   br !while.done.loc14
+// CHECK:STDOUT:
+// CHECK:STDOUT: !if.else.loc22:
+// CHECK:STDOUT:   br !while.cond.loc14
+// CHECK:STDOUT:
+// CHECK:STDOUT: !while.done.loc14:
+// CHECK:STDOUT:   return
+// CHECK:STDOUT: }
+// CHECK:STDOUT:

toolchain/check/testdata/while/unreachable_end.carbon

@@ -1,111 +0,0 @@
-// 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/check/testdata/while/unreachable_end.carbon
-// TIP: To dump output, run:
-// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/while/unreachable_end.carbon
-
-fn Cond() -> bool;
-
-fn F();
-fn G();
-fn H();
-
-fn While() {
-  F();
-  while (Cond()) {
-    G();
-    return;
-  }
-  H();
-}
-
-// CHECK:STDOUT: --- unreachable_end.carbon
-// CHECK:STDOUT:
-// CHECK:STDOUT: constants {
-// CHECK:STDOUT:   %Bool.type: type = fn_type @Bool [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
-// CHECK:STDOUT:   %Bool: %Bool.type = struct_value () [concrete]
-// CHECK:STDOUT:   %pattern_type.831: type = pattern_type bool [concrete]
-// CHECK:STDOUT:   %Cond.type: type = fn_type @Cond [concrete]
-// CHECK:STDOUT:   %Cond: %Cond.type = struct_value () [concrete]
-// CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
-// CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]
-// CHECK:STDOUT:   %G.type: type = fn_type @G [concrete]
-// CHECK:STDOUT:   %G: %G.type = struct_value () [concrete]
-// CHECK:STDOUT:   %H.type: type = fn_type @H [concrete]
-// CHECK:STDOUT:   %H: %H.type = struct_value () [concrete]
-// CHECK:STDOUT:   %While.type: type = fn_type @While [concrete]
-// CHECK:STDOUT:   %While: %While.type = struct_value () [concrete]
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: imports {
-// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
-// CHECK:STDOUT:     .Bool = %Core.Bool
-// CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/...
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Core.Bool: %Bool.type = import_ref Core//prelude/types/bool, Bool, loaded [concrete = constants.%Bool]
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: file {
-// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
-// CHECK:STDOUT:     .Core = imports.%Core
-// CHECK:STDOUT:     .Cond = %Cond.decl
-// CHECK:STDOUT:     .F = %F.decl
-// CHECK:STDOUT:     .G = %G.decl
-// CHECK:STDOUT:     .H = %H.decl
-// CHECK:STDOUT:     .While = %While.decl
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Core.import = import Core
-// CHECK:STDOUT:   %Cond.decl: %Cond.type = fn_decl @Cond [concrete = constants.%Cond] {
-// CHECK:STDOUT:     %return.patt: %pattern_type.831 = return_slot_pattern [concrete]
-// CHECK:STDOUT:     %return.param_patt: %pattern_type.831 = out_param_pattern %return.patt, call_param0 [concrete]
-// CHECK:STDOUT:   } {
-// CHECK:STDOUT:     %bool.make_type: init type = call constants.%Bool() [concrete = bool]
-// CHECK:STDOUT:     %.loc11_14.1: type = value_of_initializer %bool.make_type [concrete = bool]
-// CHECK:STDOUT:     %.loc11_14.2: type = converted %bool.make_type, %.loc11_14.1 [concrete = bool]
-// CHECK:STDOUT:     %return.param: ref bool = out_param call_param0
-// CHECK:STDOUT:     %return: ref bool = return_slot %return.param
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {} {}
-// CHECK:STDOUT:   %G.decl: %G.type = fn_decl @G [concrete = constants.%G] {} {}
-// CHECK:STDOUT:   %H.decl: %H.type = fn_decl @H [concrete = constants.%H] {} {}
-// CHECK:STDOUT:   %While.decl: %While.type = fn_decl @While [concrete = constants.%While] {} {}
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @Cond() -> bool;
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @F();
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @G();
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @H();
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @While() {
-// CHECK:STDOUT: !entry:
-// CHECK:STDOUT:   %F.ref: %F.type = name_ref F, file.%F.decl [concrete = constants.%F]
-// CHECK:STDOUT:   %F.call: init %empty_tuple.type = call %F.ref()
-// CHECK:STDOUT:   br !while.cond
-// CHECK:STDOUT:
-// CHECK:STDOUT: !while.cond:
-// CHECK:STDOUT:   %Cond.ref: %Cond.type = name_ref Cond, file.%Cond.decl [concrete = constants.%Cond]
-// CHECK:STDOUT:   %Cond.call: init bool = call %Cond.ref()
-// CHECK:STDOUT:   %.loc19_16.1: bool = value_of_initializer %Cond.call
-// CHECK:STDOUT:   %.loc19_16.2: bool = converted %Cond.call, %.loc19_16.1
-// CHECK:STDOUT:   if %.loc19_16.2 br !while.body else br !while.done
-// CHECK:STDOUT:
-// CHECK:STDOUT: !while.body:
-// CHECK:STDOUT:   %G.ref: %G.type = name_ref G, file.%G.decl [concrete = constants.%G]
-// CHECK:STDOUT:   %G.call: init %empty_tuple.type = call %G.ref()
-// CHECK:STDOUT:   return
-// CHECK:STDOUT:
-// CHECK:STDOUT: !while.done:
-// CHECK:STDOUT:   %H.ref: %H.type = name_ref H, file.%H.decl [concrete = constants.%H]
-// CHECK:STDOUT:   %H.call: init %empty_tuple.type = call %H.ref()
-// CHECK:STDOUT:   return
-// CHECK:STDOUT: }
-// CHECK:STDOUT:

toolchain/check/testdata/while/while.carbon

@@ -1,110 +0,0 @@
-// 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/check/testdata/while/while.carbon
-// TIP: To dump output, run:
-// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/while/while.carbon
-
-fn Cond() -> bool;
-
-fn F();
-fn G();
-fn H();
-
-fn While() {
-  F();
-  while (Cond()) {
-    G();
-  }
-  H();
-}
-
-// CHECK:STDOUT: --- while.carbon
-// CHECK:STDOUT:
-// CHECK:STDOUT: constants {
-// CHECK:STDOUT:   %Bool.type: type = fn_type @Bool [concrete]
-// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
-// CHECK:STDOUT:   %Bool: %Bool.type = struct_value () [concrete]
-// CHECK:STDOUT:   %pattern_type.831: type = pattern_type bool [concrete]
-// CHECK:STDOUT:   %Cond.type: type = fn_type @Cond [concrete]
-// CHECK:STDOUT:   %Cond: %Cond.type = struct_value () [concrete]
-// CHECK:STDOUT:   %F.type: type = fn_type @F [concrete]
-// CHECK:STDOUT:   %F: %F.type = struct_value () [concrete]
-// CHECK:STDOUT:   %G.type: type = fn_type @G [concrete]
-// CHECK:STDOUT:   %G: %G.type = struct_value () [concrete]
-// CHECK:STDOUT:   %H.type: type = fn_type @H [concrete]
-// CHECK:STDOUT:   %H: %H.type = struct_value () [concrete]
-// CHECK:STDOUT:   %While.type: type = fn_type @While [concrete]
-// CHECK:STDOUT:   %While: %While.type = struct_value () [concrete]
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: imports {
-// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
-// CHECK:STDOUT:     .Bool = %Core.Bool
-// CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/...
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Core.Bool: %Bool.type = import_ref Core//prelude/types/bool, Bool, loaded [concrete = constants.%Bool]
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: file {
-// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
-// CHECK:STDOUT:     .Core = imports.%Core
-// CHECK:STDOUT:     .Cond = %Cond.decl
-// CHECK:STDOUT:     .F = %F.decl
-// CHECK:STDOUT:     .G = %G.decl
-// CHECK:STDOUT:     .H = %H.decl
-// CHECK:STDOUT:     .While = %While.decl
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %Core.import = import Core
-// CHECK:STDOUT:   %Cond.decl: %Cond.type = fn_decl @Cond [concrete = constants.%Cond] {
-// CHECK:STDOUT:     %return.patt: %pattern_type.831 = return_slot_pattern [concrete]
-// CHECK:STDOUT:     %return.param_patt: %pattern_type.831 = out_param_pattern %return.patt, call_param0 [concrete]
-// CHECK:STDOUT:   } {
-// CHECK:STDOUT:     %bool.make_type: init type = call constants.%Bool() [concrete = bool]
-// CHECK:STDOUT:     %.loc11_14.1: type = value_of_initializer %bool.make_type [concrete = bool]
-// CHECK:STDOUT:     %.loc11_14.2: type = converted %bool.make_type, %.loc11_14.1 [concrete = bool]
-// CHECK:STDOUT:     %return.param: ref bool = out_param call_param0
-// CHECK:STDOUT:     %return: ref bool = return_slot %return.param
-// CHECK:STDOUT:   }
-// CHECK:STDOUT:   %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {} {}
-// CHECK:STDOUT:   %G.decl: %G.type = fn_decl @G [concrete = constants.%G] {} {}
-// CHECK:STDOUT:   %H.decl: %H.type = fn_decl @H [concrete = constants.%H] {} {}
-// CHECK:STDOUT:   %While.decl: %While.type = fn_decl @While [concrete = constants.%While] {} {}
-// CHECK:STDOUT: }
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @Cond() -> bool;
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @F();
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @G();
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @H();
-// CHECK:STDOUT:
-// CHECK:STDOUT: fn @While() {
-// CHECK:STDOUT: !entry:
-// CHECK:STDOUT:   %F.ref: %F.type = name_ref F, file.%F.decl [concrete = constants.%F]
-// CHECK:STDOUT:   %F.call: init %empty_tuple.type = call %F.ref()
-// CHECK:STDOUT:   br !while.cond
-// CHECK:STDOUT:
-// CHECK:STDOUT: !while.cond:
-// CHECK:STDOUT:   %Cond.ref: %Cond.type = name_ref Cond, file.%Cond.decl [concrete = constants.%Cond]
-// CHECK:STDOUT:   %Cond.call: init bool = call %Cond.ref()
-// CHECK:STDOUT:   %.loc19_16.1: bool = value_of_initializer %Cond.call
-// CHECK:STDOUT:   %.loc19_16.2: bool = converted %Cond.call, %.loc19_16.1
-// CHECK:STDOUT:   if %.loc19_16.2 br !while.body else br !while.done
-// CHECK:STDOUT:
-// CHECK:STDOUT: !while.body:
-// CHECK:STDOUT:   %G.ref: %G.type = name_ref G, file.%G.decl [concrete = constants.%G]
-// CHECK:STDOUT:   %G.call: init %empty_tuple.type = call %G.ref()
-// CHECK:STDOUT:   br !while.cond
-// CHECK:STDOUT:
-// CHECK:STDOUT: !while.done:
-// CHECK:STDOUT:   %H.ref: %H.type = name_ref H, file.%H.decl [concrete = constants.%H]
-// CHECK:STDOUT:   %H.call: init %empty_tuple.type = call %H.ref()
-// CHECK:STDOUT:   return
-// CHECK:STDOUT: }
-// CHECK:STDOUT:

toolchain/testing/min_prelude/bool.carbon

@@ -0,0 +1,17 @@
+// 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
+
+// A minimal prelude for testing conversion between types.
+package Core library "prelude";
+
+interface As(Dest:! type) {
+  fn Convert[self: Self]() -> Dest;
+}
+
+interface ImplicitAs(Dest:! type) {
+  // TODO: extend As(Dest);
+  fn Convert[self: Self]() -> Dest;
+}
+
+fn Bool() -> type = "bool.make_type";