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carbon-lang/toolchain/check/testdata/pointer/address_of_lvalue.carbon
T
Richard Smith 5b884ae14d Improve lowering for global variables. (#5492) 
- Track the `VarPattern` instruction on the `VarStorage` instruction so
that it's available for name mangling.
- Mangle global variables based on the first binding name within their
pattern.
- Give global variables external rather than internal linkage, except if
they have no bindings whatsoever in their pattern.
- To support lowering references to bindings nested within a global var,
such as for `var (x: i32, b: i32)`, add some basic initial support for
reference constant expressions. Treat a global `var` as a reference
constant, and treat an aggregate access into a reference constant as a
reference constant.
2025-05-21 00:09:10 +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
//
// 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_lvalue.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/pointer/address_of_lvalue.carbon
fn F() {
var s: {.a: i32, .b: i32} = {.a = 1, .b = 2};
var p: {.a: i32, .b: i32}* = &s;
var q: i32* = &s.a;
var r: i32* = &s.b;
var t: (i32, i32) = (1, 2);
var t0: i32* = &t.0;
var t1: i32* = &t.1;
}
// CHECK:STDOUT: --- address_of_lvalue.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %Int.type: type = generic_class_type @Int [concrete]
// CHECK:STDOUT: %Int.generic: %Int.type = struct_value () [concrete]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %struct_type.a.b.501: type = struct_type {.a: %i32, .b: %i32} [concrete]
// CHECK:STDOUT: %ptr.3ee: type = ptr_type %struct_type.a.b.501 [concrete]
// CHECK:STDOUT: %pattern_type.851: type = pattern_type %struct_type.a.b.501 [concrete]
// CHECK:STDOUT: %int_1.5b8: Core.IntLiteral = int_value 1 [concrete]
// CHECK:STDOUT: %int_2.ecc: Core.IntLiteral = int_value 2 [concrete]
// CHECK:STDOUT: %struct_type.a.b.cfd: type = struct_type {.a: Core.IntLiteral, .b: Core.IntLiteral} [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.205: type = facet_type <@ImplicitAs, @ImplicitAs(%i32)> [concrete]
// CHECK:STDOUT: %Convert.type.1b6: type = fn_type @Convert.1, @ImplicitAs(%i32) [concrete]
// CHECK:STDOUT: %To.c80: Core.IntLiteral = bind_symbolic_name To, 0 [symbolic]
// CHECK:STDOUT: %Convert.type.0f9: type = fn_type @Convert.2, @impl.4f9(%To.c80) [symbolic]
// CHECK:STDOUT: %Convert.f06: %Convert.type.0f9 = struct_value () [symbolic]
// CHECK:STDOUT: %ImplicitAs.impl_witness.c75: <witness> = impl_witness imports.%ImplicitAs.impl_witness_table.a2f, @impl.4f9(%int_32) [concrete]
// CHECK:STDOUT: %Convert.type.035: type = fn_type @Convert.2, @impl.4f9(%int_32) [concrete]
// CHECK:STDOUT: %Convert.956: %Convert.type.035 = struct_value () [concrete]
// CHECK:STDOUT: %ImplicitAs.facet: %ImplicitAs.type.205 = facet_value Core.IntLiteral, (%ImplicitAs.impl_witness.c75) [concrete]
// CHECK:STDOUT: %.9c3: type = fn_type_with_self_type %Convert.type.1b6, %ImplicitAs.facet [concrete]
// CHECK:STDOUT: %Convert.bound.ab5: <bound method> = bound_method %int_1.5b8, %Convert.956 [concrete]
// CHECK:STDOUT: %Convert.specific_fn: <specific function> = specific_function %Convert.956, @Convert.2(%int_32) [concrete]
// CHECK:STDOUT: %bound_method.9a1: <bound method> = bound_method %int_1.5b8, %Convert.specific_fn [concrete]
// CHECK:STDOUT: %int_1.5d2: %i32 = int_value 1 [concrete]
// CHECK:STDOUT: %Convert.bound.ef9: <bound method> = bound_method %int_2.ecc, %Convert.956 [concrete]
// CHECK:STDOUT: %bound_method.b92: <bound method> = bound_method %int_2.ecc, %Convert.specific_fn [concrete]
// CHECK:STDOUT: %int_2.ef8: %i32 = int_value 2 [concrete]
// CHECK:STDOUT: %struct: %struct_type.a.b.501 = struct_value (%int_1.5d2, %int_2.ef8) [concrete]
// CHECK:STDOUT: %pattern_type.8dd: type = pattern_type %ptr.3ee [concrete]
// CHECK:STDOUT: %ptr.235: type = ptr_type %i32 [concrete]
// CHECK:STDOUT: %pattern_type.fe8: type = pattern_type %ptr.235 [concrete]
// CHECK:STDOUT: %tuple.type.24b: type = tuple_type (type, type) [concrete]
// CHECK:STDOUT: %tuple.type.d07: type = tuple_type (%i32, %i32) [concrete]
// CHECK:STDOUT: %pattern_type.511: type = pattern_type %tuple.type.d07 [concrete]
// CHECK:STDOUT: %tuple.type.f94: type = tuple_type (Core.IntLiteral, Core.IntLiteral) [concrete]
// CHECK:STDOUT: %tuple: %tuple.type.d07 = tuple_value (%int_1.5d2, %int_2.ef8) [concrete]
// CHECK:STDOUT: %int_0: Core.IntLiteral = int_value 0 [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: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.Int: %Int.type = import_ref Core//prelude/types/int, Int, loaded [concrete = constants.%Int.generic]
// CHECK:STDOUT: %Core.ImplicitAs: %ImplicitAs.type.cc7 = import_ref Core//prelude/operators/as, ImplicitAs, loaded [concrete = constants.%ImplicitAs.generic]
// CHECK:STDOUT: %Core.import_ref.a5b: @impl.4f9.%Convert.type (%Convert.type.0f9) = import_ref Core//prelude/types/int, loc19_39, loaded [symbolic = @impl.4f9.%Convert (constants.%Convert.f06)]
// CHECK:STDOUT: %ImplicitAs.impl_witness_table.a2f = impl_witness_table (%Core.import_ref.a5b), @impl.4f9 [concrete]
// 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: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %s.patt: %pattern_type.851 = binding_pattern s [concrete]
// CHECK:STDOUT: %s.var_patt: %pattern_type.851 = var_pattern %s.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %s.var: ref %struct_type.a.b.501 = var %s.var_patt
// CHECK:STDOUT: %int_1.loc12: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
// CHECK:STDOUT: %int_2.loc12: Core.IntLiteral = int_value 2 [concrete = constants.%int_2.ecc]
// CHECK:STDOUT: %.loc12_46.1: %struct_type.a.b.cfd = struct_literal (%int_1.loc12, %int_2.loc12)
// CHECK:STDOUT: %impl.elem0.loc12_46.1: %.9c3 = impl_witness_access constants.%ImplicitAs.impl_witness.c75, element0 [concrete = constants.%Convert.956]
// CHECK:STDOUT: %bound_method.loc12_46.1: <bound method> = bound_method %int_1.loc12, %impl.elem0.loc12_46.1 [concrete = constants.%Convert.bound.ab5]
// CHECK:STDOUT: %specific_fn.loc12_46.1: <specific function> = specific_function %impl.elem0.loc12_46.1, @Convert.2(constants.%int_32) [concrete = constants.%Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc12_46.2: <bound method> = bound_method %int_1.loc12, %specific_fn.loc12_46.1 [concrete = constants.%bound_method.9a1]
// CHECK:STDOUT: %int.convert_checked.loc12_46.1: init %i32 = call %bound_method.loc12_46.2(%int_1.loc12) [concrete = constants.%int_1.5d2]
// CHECK:STDOUT: %.loc12_46.2: init %i32 = converted %int_1.loc12, %int.convert_checked.loc12_46.1 [concrete = constants.%int_1.5d2]
// CHECK:STDOUT: %.loc12_46.3: ref %i32 = struct_access %s.var, element0
// CHECK:STDOUT: %.loc12_46.4: init %i32 = initialize_from %.loc12_46.2 to %.loc12_46.3 [concrete = constants.%int_1.5d2]
// CHECK:STDOUT: %impl.elem0.loc12_46.2: %.9c3 = impl_witness_access constants.%ImplicitAs.impl_witness.c75, element0 [concrete = constants.%Convert.956]
// CHECK:STDOUT: %bound_method.loc12_46.3: <bound method> = bound_method %int_2.loc12, %impl.elem0.loc12_46.2 [concrete = constants.%Convert.bound.ef9]
// CHECK:STDOUT: %specific_fn.loc12_46.2: <specific function> = specific_function %impl.elem0.loc12_46.2, @Convert.2(constants.%int_32) [concrete = constants.%Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc12_46.4: <bound method> = bound_method %int_2.loc12, %specific_fn.loc12_46.2 [concrete = constants.%bound_method.b92]
// CHECK:STDOUT: %int.convert_checked.loc12_46.2: init %i32 = call %bound_method.loc12_46.4(%int_2.loc12) [concrete = constants.%int_2.ef8]
// CHECK:STDOUT: %.loc12_46.5: init %i32 = converted %int_2.loc12, %int.convert_checked.loc12_46.2 [concrete = constants.%int_2.ef8]
// CHECK:STDOUT: %.loc12_46.6: ref %i32 = struct_access %s.var, element1
// CHECK:STDOUT: %.loc12_46.7: init %i32 = initialize_from %.loc12_46.5 to %.loc12_46.6 [concrete = constants.%int_2.ef8]
// CHECK:STDOUT: %.loc12_46.8: init %struct_type.a.b.501 = struct_init (%.loc12_46.4, %.loc12_46.7) to %s.var [concrete = constants.%struct]
// CHECK:STDOUT: %.loc12_3: init %struct_type.a.b.501 = converted %.loc12_46.1, %.loc12_46.8 [concrete = constants.%struct]
// CHECK:STDOUT: assign %s.var, %.loc12_3
// CHECK:STDOUT: %.loc12_27: type = splice_block %struct_type.a.b.loc12 [concrete = constants.%struct_type.a.b.501] {
// CHECK:STDOUT: %int_32.loc12_15: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc12_15: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %int_32.loc12_24: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc12_24: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %struct_type.a.b.loc12: type = struct_type {.a: %i32, .b: %i32} [concrete = constants.%struct_type.a.b.501]
// CHECK:STDOUT: }
// CHECK:STDOUT: %s: ref %struct_type.a.b.501 = bind_name s, %s.var
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %p.patt: %pattern_type.8dd = binding_pattern p [concrete]
// CHECK:STDOUT: %p.var_patt: %pattern_type.8dd = var_pattern %p.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %p.var: ref %ptr.3ee = var %p.var_patt
// CHECK:STDOUT: %s.ref.loc14: ref %struct_type.a.b.501 = name_ref s, %s
// CHECK:STDOUT: %addr.loc14: %ptr.3ee = addr_of %s.ref.loc14
// CHECK:STDOUT: assign %p.var, %addr.loc14
// CHECK:STDOUT: %.loc14: type = splice_block %ptr.loc14 [concrete = constants.%ptr.3ee] {
// CHECK:STDOUT: %int_32.loc14_15: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc14_15: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %int_32.loc14_24: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc14_24: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %struct_type.a.b.loc14: type = struct_type {.a: %i32, .b: %i32} [concrete = constants.%struct_type.a.b.501]
// CHECK:STDOUT: %ptr.loc14: type = ptr_type %struct_type.a.b.loc14 [concrete = constants.%ptr.3ee]
// CHECK:STDOUT: }
// CHECK:STDOUT: %p: ref %ptr.3ee = bind_name p, %p.var
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %q.patt: %pattern_type.fe8 = binding_pattern q [concrete]
// CHECK:STDOUT: %q.var_patt: %pattern_type.fe8 = var_pattern %q.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %q.var: ref %ptr.235 = var %q.var_patt
// CHECK:STDOUT: %s.ref.loc15: ref %struct_type.a.b.501 = name_ref s, %s
// CHECK:STDOUT: %.loc15_19: ref %i32 = struct_access %s.ref.loc15, element0
// CHECK:STDOUT: %addr.loc15: %ptr.235 = addr_of %.loc15_19
// CHECK:STDOUT: assign %q.var, %addr.loc15
// CHECK:STDOUT: %.loc15_13: type = splice_block %ptr.loc15 [concrete = constants.%ptr.235] {
// 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: %ptr.loc15: type = ptr_type %i32.loc15 [concrete = constants.%ptr.235]
// CHECK:STDOUT: }
// CHECK:STDOUT: %q: ref %ptr.235 = bind_name q, %q.var
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %r.patt: %pattern_type.fe8 = binding_pattern r [concrete]
// CHECK:STDOUT: %r.var_patt: %pattern_type.fe8 = var_pattern %r.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %r.var: ref %ptr.235 = var %r.var_patt
// CHECK:STDOUT: %s.ref.loc16: ref %struct_type.a.b.501 = name_ref s, %s
// CHECK:STDOUT: %.loc16_19: ref %i32 = struct_access %s.ref.loc16, element1
// CHECK:STDOUT: %addr.loc16: %ptr.235 = addr_of %.loc16_19
// CHECK:STDOUT: assign %r.var, %addr.loc16
// CHECK:STDOUT: %.loc16_13: type = splice_block %ptr.loc16 [concrete = constants.%ptr.235] {
// 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: %ptr.loc16: type = ptr_type %i32.loc16 [concrete = constants.%ptr.235]
// CHECK:STDOUT: }
// CHECK:STDOUT: %r: ref %ptr.235 = bind_name r, %r.var
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %t.patt: %pattern_type.511 = binding_pattern t [concrete]
// CHECK:STDOUT: %t.var_patt: %pattern_type.511 = var_pattern %t.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %t.var: ref %tuple.type.d07 = var %t.var_patt
// CHECK:STDOUT: %int_1.loc18: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
// CHECK:STDOUT: %int_2.loc18: Core.IntLiteral = int_value 2 [concrete = constants.%int_2.ecc]
// CHECK:STDOUT: %.loc18_28.1: %tuple.type.f94 = tuple_literal (%int_1.loc18, %int_2.loc18)
// CHECK:STDOUT: %impl.elem0.loc18_28.1: %.9c3 = impl_witness_access constants.%ImplicitAs.impl_witness.c75, element0 [concrete = constants.%Convert.956]
// CHECK:STDOUT: %bound_method.loc18_28.1: <bound method> = bound_method %int_1.loc18, %impl.elem0.loc18_28.1 [concrete = constants.%Convert.bound.ab5]
// CHECK:STDOUT: %specific_fn.loc18_28.1: <specific function> = specific_function %impl.elem0.loc18_28.1, @Convert.2(constants.%int_32) [concrete = constants.%Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc18_28.2: <bound method> = bound_method %int_1.loc18, %specific_fn.loc18_28.1 [concrete = constants.%bound_method.9a1]
// CHECK:STDOUT: %int.convert_checked.loc18_28.1: init %i32 = call %bound_method.loc18_28.2(%int_1.loc18) [concrete = constants.%int_1.5d2]
// CHECK:STDOUT: %.loc18_28.2: init %i32 = converted %int_1.loc18, %int.convert_checked.loc18_28.1 [concrete = constants.%int_1.5d2]
// CHECK:STDOUT: %tuple.elem0.loc18: ref %i32 = tuple_access %t.var, element0
// CHECK:STDOUT: %.loc18_28.3: init %i32 = initialize_from %.loc18_28.2 to %tuple.elem0.loc18 [concrete = constants.%int_1.5d2]
// CHECK:STDOUT: %impl.elem0.loc18_28.2: %.9c3 = impl_witness_access constants.%ImplicitAs.impl_witness.c75, element0 [concrete = constants.%Convert.956]
// CHECK:STDOUT: %bound_method.loc18_28.3: <bound method> = bound_method %int_2.loc18, %impl.elem0.loc18_28.2 [concrete = constants.%Convert.bound.ef9]
// CHECK:STDOUT: %specific_fn.loc18_28.2: <specific function> = specific_function %impl.elem0.loc18_28.2, @Convert.2(constants.%int_32) [concrete = constants.%Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc18_28.4: <bound method> = bound_method %int_2.loc18, %specific_fn.loc18_28.2 [concrete = constants.%bound_method.b92]
// CHECK:STDOUT: %int.convert_checked.loc18_28.2: init %i32 = call %bound_method.loc18_28.4(%int_2.loc18) [concrete = constants.%int_2.ef8]
// CHECK:STDOUT: %.loc18_28.4: init %i32 = converted %int_2.loc18, %int.convert_checked.loc18_28.2 [concrete = constants.%int_2.ef8]
// CHECK:STDOUT: %tuple.elem1.loc18: ref %i32 = tuple_access %t.var, element1
// CHECK:STDOUT: %.loc18_28.5: init %i32 = initialize_from %.loc18_28.4 to %tuple.elem1.loc18 [concrete = constants.%int_2.ef8]
// CHECK:STDOUT: %.loc18_28.6: init %tuple.type.d07 = tuple_init (%.loc18_28.3, %.loc18_28.5) to %t.var [concrete = constants.%tuple]
// CHECK:STDOUT: %.loc18_3: init %tuple.type.d07 = converted %.loc18_28.1, %.loc18_28.6 [concrete = constants.%tuple]
// CHECK:STDOUT: assign %t.var, %.loc18_3
// CHECK:STDOUT: %.loc18_19.1: type = splice_block %.loc18_19.3 [concrete = constants.%tuple.type.d07] {
// CHECK:STDOUT: %int_32.loc18_11: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc18_11: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %int_32.loc18_16: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc18_16: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %.loc18_19.2: %tuple.type.24b = tuple_literal (%i32.loc18_11, %i32.loc18_16)
// CHECK:STDOUT: %.loc18_19.3: type = converted %.loc18_19.2, constants.%tuple.type.d07 [concrete = constants.%tuple.type.d07]
// CHECK:STDOUT: }
// CHECK:STDOUT: %t: ref %tuple.type.d07 = bind_name t, %t.var
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %t0.patt: %pattern_type.fe8 = binding_pattern t0 [concrete]
// CHECK:STDOUT: %t0.var_patt: %pattern_type.fe8 = var_pattern %t0.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %t0.var: ref %ptr.235 = var %t0.var_patt
// CHECK:STDOUT: %t.ref.loc19: ref %tuple.type.d07 = name_ref t, %t
// CHECK:STDOUT: %int_0: Core.IntLiteral = int_value 0 [concrete = constants.%int_0]
// CHECK:STDOUT: %tuple.elem0.loc19: ref %i32 = tuple_access %t.ref.loc19, element0
// CHECK:STDOUT: %addr.loc19: %ptr.235 = addr_of %tuple.elem0.loc19
// CHECK:STDOUT: assign %t0.var, %addr.loc19
// CHECK:STDOUT: %.loc19: type = splice_block %ptr.loc19 [concrete = constants.%ptr.235] {
// CHECK:STDOUT: %int_32.loc19: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc19: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %ptr.loc19: type = ptr_type %i32.loc19 [concrete = constants.%ptr.235]
// CHECK:STDOUT: }
// CHECK:STDOUT: %t0: ref %ptr.235 = bind_name t0, %t0.var
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %t1.patt: %pattern_type.fe8 = binding_pattern t1 [concrete]
// CHECK:STDOUT: %t1.var_patt: %pattern_type.fe8 = var_pattern %t1.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %t1.var: ref %ptr.235 = var %t1.var_patt
// CHECK:STDOUT: %t.ref.loc20: ref %tuple.type.d07 = name_ref t, %t
// CHECK:STDOUT: %int_1.loc20: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
// CHECK:STDOUT: %tuple.elem1.loc20: ref %i32 = tuple_access %t.ref.loc20, element1
// CHECK:STDOUT: %addr.loc20: %ptr.235 = addr_of %tuple.elem1.loc20
// CHECK:STDOUT: assign %t1.var, %addr.loc20
// CHECK:STDOUT: %.loc20: type = splice_block %ptr.loc20 [concrete = constants.%ptr.235] {
// CHECK:STDOUT: %int_32.loc20: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc20: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %ptr.loc20: type = ptr_type %i32.loc20 [concrete = constants.%ptr.235]
// CHECK:STDOUT: }
// CHECK:STDOUT: %t1: ref %ptr.235 = bind_name t1, %t1.var
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
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