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carbon-lang/toolchain/check/testdata/pointer/address_of_deref.carbon
T
Geoff Romer 4329a83e4c Form-aware textual format for return parameters and arguments (#6588) 
The key changes are:
- Function output parameters are now prefixed with `out`, and more
consistently formatted as named parameters.
- Function and inst output arguments are now written as part of the inst
form, rather than as one of the inst arguments.

As a drive-by fix, this also changes `Temporary::storage_id` from
`DestInstId` to `InstId`, because it doesn't represent an output
parameter of the `Temporary` inst itself.

See the review of
[#6532](https://github.com/carbon-language/carbon-lang/pull/6532) and
[this Discord
discussion](https://discord.com/channels/655572317891461132/999638000126394370/1458268977020141589)
for additional background.
2026-01-14 23:27:21 +00:00

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// 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
//
// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/int.carbon
// TODO: Add ranges and switch to "--dump-sem-ir-ranges=only".
// EXTRA-ARGS: --dump-sem-ir-ranges=if-present
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/pointer/address_of_deref.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/pointer/address_of_deref.carbon
fn F() -> i32 {
var n: i32 = 0;
return *&*&n;
}
// CHECK:STDOUT: --- address_of_deref.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %Int.type: type = generic_class_type @Int [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %Int.generic: %Int.type = struct_value () [concrete]
// CHECK:STDOUT: %N: Core.IntLiteral = symbolic_binding N, 0 [symbolic]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %.941: form = init_form %i32, call_param0 [concrete]
// CHECK:STDOUT: %pattern_type.7ce: type = pattern_type %i32 [concrete]
// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
// CHECK:STDOUT: %int_0.5c6: Core.IntLiteral = int_value 0 [concrete]
// CHECK:STDOUT: %ImplicitAs.type.cc7: type = generic_interface_type @ImplicitAs [concrete]
// CHECK:STDOUT: %ImplicitAs.generic: %ImplicitAs.type.cc7 = struct_value () [concrete]
// CHECK:STDOUT: %ImplicitAs.type.e8c: type = facet_type <@ImplicitAs, @ImplicitAs(%i32)> [concrete]
// CHECK:STDOUT: %ImplicitAs.Convert.type.1b6: type = fn_type @ImplicitAs.Convert, @ImplicitAs(%i32) [concrete]
// CHECK:STDOUT: %To: Core.IntLiteral = symbolic_binding To, 0 [symbolic]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.4e6: type = fn_type @Core.IntLiteral.as.ImplicitAs.impl.Convert, @Core.IntLiteral.as.ImplicitAs.impl(%To) [symbolic]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.3c2: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.4e6 = struct_value () [symbolic]
// CHECK:STDOUT: %ImplicitAs.impl_witness.6bc: <witness> = impl_witness imports.%ImplicitAs.impl_witness_table.74f, @Core.IntLiteral.as.ImplicitAs.impl(%int_32) [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.e0d: type = fn_type @Core.IntLiteral.as.ImplicitAs.impl.Convert, @Core.IntLiteral.as.ImplicitAs.impl(%int_32) [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.0b5: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.e0d = struct_value () [concrete]
// CHECK:STDOUT: %ImplicitAs.facet: %ImplicitAs.type.e8c = facet_value Core.IntLiteral, (%ImplicitAs.impl_witness.6bc) [concrete]
// CHECK:STDOUT: %.863: type = fn_type_with_self_type %ImplicitAs.Convert.type.1b6, %ImplicitAs.facet [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.bound: <bound method> = bound_method %int_0.5c6, %Core.IntLiteral.as.ImplicitAs.impl.Convert.0b5 [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn: <specific function> = specific_function %Core.IntLiteral.as.ImplicitAs.impl.Convert.0b5, @Core.IntLiteral.as.ImplicitAs.impl.Convert(%int_32) [concrete]
// CHECK:STDOUT: %bound_method: <bound method> = bound_method %int_0.5c6, %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn [concrete]
// CHECK:STDOUT: %int_0.6a9: %i32 = int_value 0 [concrete]
// CHECK:STDOUT: %ptr.235: type = ptr_type %i32 [concrete]
// CHECK:STDOUT: %Copy.type: type = facet_type <@Copy> [concrete]
// CHECK:STDOUT: %Copy.Op.type: type = fn_type @Copy.Op [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.type.824: type = fn_type @Int.as.Copy.impl.Op, @Int.as.Copy.impl(%N) [symbolic]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.9b9: %Int.as.Copy.impl.Op.type.824 = struct_value () [symbolic]
// CHECK:STDOUT: %Copy.impl_witness.f17: <witness> = impl_witness imports.%Copy.impl_witness_table.e76, @Int.as.Copy.impl(%int_32) [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.type.546: type = fn_type @Int.as.Copy.impl.Op, @Int.as.Copy.impl(%int_32) [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.664: %Int.as.Copy.impl.Op.type.546 = struct_value () [concrete]
// CHECK:STDOUT: %Copy.facet: %Copy.type = facet_value %i32, (%Copy.impl_witness.f17) [concrete]
// CHECK:STDOUT: %.f79: type = fn_type_with_self_type %Copy.Op.type, %Copy.facet [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.specific_fn: <specific function> = specific_function %Int.as.Copy.impl.Op.664, @Int.as.Copy.impl.Op(%int_32) [concrete]
// CHECK:STDOUT: %Destroy.type: type = facet_type <@Destroy> [concrete]
// CHECK:STDOUT: %DestroyOp.type: type = fn_type @DestroyOp [concrete]
// CHECK:STDOUT: %DestroyOp: %DestroyOp.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Int = %Core.Int
// CHECK:STDOUT: .ImplicitAs = %Core.ImplicitAs
// CHECK:STDOUT: .Copy = %Core.Copy
// CHECK:STDOUT: .Destroy = %Core.Destroy
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.Int: %Int.type = import_ref Core//prelude/parts/int, Int, loaded [concrete = constants.%Int.generic]
// CHECK:STDOUT: %Core.ImplicitAs: %ImplicitAs.type.cc7 = import_ref Core//prelude/parts/as, ImplicitAs, loaded [concrete = constants.%ImplicitAs.generic]
// CHECK:STDOUT: %Core.import_ref.42d: @Core.IntLiteral.as.ImplicitAs.impl.%Core.IntLiteral.as.ImplicitAs.impl.Convert.type (%Core.IntLiteral.as.ImplicitAs.impl.Convert.type.4e6) = import_ref Core//prelude/parts/int, loc{{\d+_\d+}}, loaded [symbolic = @Core.IntLiteral.as.ImplicitAs.impl.%Core.IntLiteral.as.ImplicitAs.impl.Convert (constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.3c2)]
// CHECK:STDOUT: %ImplicitAs.impl_witness_table.74f = impl_witness_table (%Core.import_ref.42d), @Core.IntLiteral.as.ImplicitAs.impl [concrete]
// CHECK:STDOUT: %Core.Copy: type = import_ref Core//prelude/parts/copy, Copy, loaded [concrete = constants.%Copy.type]
// CHECK:STDOUT: %Core.import_ref.18d: @Int.as.Copy.impl.%Int.as.Copy.impl.Op.type (%Int.as.Copy.impl.Op.type.824) = import_ref Core//prelude/parts/int, loc{{\d+_\d+}}, loaded [symbolic = @Int.as.Copy.impl.%Int.as.Copy.impl.Op (constants.%Int.as.Copy.impl.Op.9b9)]
// CHECK:STDOUT: %Copy.impl_witness_table.e76 = impl_witness_table (%Core.import_ref.18d), @Int.as.Copy.impl [concrete]
// CHECK:STDOUT: %Core.Destroy: type = import_ref Core//prelude/parts/destroy, Destroy, loaded [concrete = constants.%Destroy.type]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .F = %F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {
// CHECK:STDOUT: %return.patt: %pattern_type.7ce = return_slot_pattern [concrete]
// CHECK:STDOUT: %return.param_patt: %pattern_type.7ce = out_param_pattern %return.patt, call_param0 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %int_32.loc15: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc15: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %.loc15: form = init_form %i32.loc15, call_param0 [concrete = constants.%.941]
// CHECK:STDOUT: %return.param: ref %i32 = out_param call_param0
// CHECK:STDOUT: %return: ref %i32 = return_slot %return.param
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() -> out %return.param: %i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %n.patt: %pattern_type.7ce = ref_binding_pattern n [concrete]
// CHECK:STDOUT: %n.var_patt: %pattern_type.7ce = var_pattern %n.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %n.var: ref %i32 = var %n.var_patt
// CHECK:STDOUT: %int_0: Core.IntLiteral = int_value 0 [concrete = constants.%int_0.5c6]
// CHECK:STDOUT: %impl.elem0.loc16: %.863 = impl_witness_access constants.%ImplicitAs.impl_witness.6bc, element0 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.0b5]
// CHECK:STDOUT: %bound_method.loc16_3.1: <bound method> = bound_method %int_0, %impl.elem0.loc16 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.bound]
// CHECK:STDOUT: %specific_fn.loc16: <specific function> = specific_function %impl.elem0.loc16, @Core.IntLiteral.as.ImplicitAs.impl.Convert(constants.%int_32) [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc16_3.2: <bound method> = bound_method %int_0, %specific_fn.loc16 [concrete = constants.%bound_method]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.call: init %i32 = call %bound_method.loc16_3.2(%int_0) [concrete = constants.%int_0.6a9]
// CHECK:STDOUT: %.loc16_3: init %i32 = converted %int_0, %Core.IntLiteral.as.ImplicitAs.impl.Convert.call [concrete = constants.%int_0.6a9]
// CHECK:STDOUT: assign %n.var, %.loc16_3
// CHECK:STDOUT: %.loc16_10: type = splice_block %i32.loc16 [concrete = constants.%i32] {
// CHECK:STDOUT: %int_32.loc16: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc16: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: }
// CHECK:STDOUT: %n: ref %i32 = ref_binding n, %n.var
// CHECK:STDOUT: %n.ref: ref %i32 = name_ref n, %n
// CHECK:STDOUT: %addr.loc17_13: %ptr.235 = addr_of %n.ref
// CHECK:STDOUT: %.loc17_12: ref %i32 = deref %addr.loc17_13
// CHECK:STDOUT: %addr.loc17_11: %ptr.235 = addr_of %.loc17_12
// CHECK:STDOUT: %.loc17_10.1: ref %i32 = deref %addr.loc17_11
// CHECK:STDOUT: %.loc17_10.2: %i32 = acquire_value %.loc17_10.1
// CHECK:STDOUT: %impl.elem0.loc17: %.f79 = impl_witness_access constants.%Copy.impl_witness.f17, element0 [concrete = constants.%Int.as.Copy.impl.Op.664]
// CHECK:STDOUT: %bound_method.loc17_10.1: <bound method> = bound_method %.loc17_10.2, %impl.elem0.loc17
// CHECK:STDOUT: %specific_fn.loc17: <specific function> = specific_function %impl.elem0.loc17, @Int.as.Copy.impl.Op(constants.%int_32) [concrete = constants.%Int.as.Copy.impl.Op.specific_fn]
// CHECK:STDOUT: %bound_method.loc17_10.2: <bound method> = bound_method %.loc17_10.2, %specific_fn.loc17
// CHECK:STDOUT: %Int.as.Copy.impl.Op.call: init %i32 = call %bound_method.loc17_10.2(%.loc17_10.2)
// CHECK:STDOUT: %DestroyOp.bound: <bound method> = bound_method %n.var, constants.%DestroyOp
// CHECK:STDOUT: %DestroyOp.call: init %empty_tuple.type = call %DestroyOp.bound(%n.var)
// CHECK:STDOUT: return %Int.as.Copy.impl.Op.call
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @DestroyOp(%self.param: %i32) = "no_op";
// CHECK:STDOUT:
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