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carbon-lang/toolchain/check/testdata/const/import.carbon
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Richard SmithandDana Jansens bba32900c3 Preserve type sugar in ArrayType, ConstType, and PointerType. (#5235) 
Each of these types takes another type as an operand. Instead of storing
that other type as a `TypeId`, store it as an `InstId` so that we can
track how it was written, not only its canonical form.

The canonical constant values of these types continue to store the
canonical constant values of their operands, as normal.

---------

Co-authored-by: Dana Jansens <danakj@orodu.net>
2025-04-03 21:14:03 +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/const/import.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/const/import.carbon
// --- implicit.carbon
package Implicit;
fn F() -> const i32;
var a_ref: const i32 = F();
var a_ptr_ref: const i32* = &a_ref;
// --- implicit.impl.carbon
impl package Implicit;
// Take a reference to avoid unsupported copy logic. This still validates the
// `const` is handled.
var a: const i32* = &a_ref;
var a_ptr: const i32* = a_ptr_ref;
// CHECK:STDOUT: --- implicit.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %const: type = const_type %i32 [concrete]
// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
// CHECK:STDOUT: %ptr: type = ptr_type %const [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Int = %Core.Int
// 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: .F = %F.decl
// CHECK:STDOUT: .a_ref = %a_ref
// CHECK:STDOUT: .a_ptr_ref = %a_ptr_ref
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {
// CHECK:STDOUT: %return.patt: %const = return_slot_pattern
// CHECK:STDOUT: %return.param_patt: %const = out_param_pattern %return.patt, call_param0
// CHECK:STDOUT: } {
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %const: type = const_type %i32 [concrete = constants.%const]
// CHECK:STDOUT: %return.param: ref %const = out_param call_param0
// CHECK:STDOUT: %return: ref %const = return_slot %return.param
// CHECK:STDOUT: }
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %a_ref.patt: %const = binding_pattern a_ref
// CHECK:STDOUT: %.loc6_1: %const = var_pattern %a_ref.patt
// CHECK:STDOUT: }
// CHECK:STDOUT: %a_ref.var: ref %const = var a_ref
// CHECK:STDOUT: %.loc6_12: type = splice_block %const.loc6 [concrete = constants.%const] {
// CHECK:STDOUT: %int_32.loc6: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc6: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %const.loc6: type = const_type %i32.loc6 [concrete = constants.%const]
// CHECK:STDOUT: }
// CHECK:STDOUT: %a_ref: ref %const = bind_name a_ref, %a_ref.var
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %a_ptr_ref.patt: %ptr = binding_pattern a_ptr_ref
// CHECK:STDOUT: %.loc7_1: %ptr = var_pattern %a_ptr_ref.patt
// CHECK:STDOUT: }
// CHECK:STDOUT: %a_ptr_ref.var: ref %ptr = var a_ptr_ref
// CHECK:STDOUT: %.loc7_25: type = splice_block %ptr [concrete = constants.%ptr] {
// CHECK:STDOUT: %int_32.loc7: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc7: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %const.loc7: type = const_type %i32.loc7 [concrete = constants.%const]
// CHECK:STDOUT: %ptr: type = ptr_type %const.loc7 [concrete = constants.%ptr]
// CHECK:STDOUT: }
// CHECK:STDOUT: %a_ptr_ref: ref %ptr = bind_name a_ptr_ref, %a_ptr_ref.var
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() -> %const;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @__global_init() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %F.ref: %F.type = name_ref F, file.%F.decl [concrete = constants.%F]
// CHECK:STDOUT: %F.call: init %const = call %F.ref()
// CHECK:STDOUT: assign file.%a_ref.var, %F.call
// CHECK:STDOUT: %a_ref.ref: ref %const = name_ref a_ref, file.%a_ref
// CHECK:STDOUT: %addr: %ptr = addr_of %a_ref.ref
// CHECK:STDOUT: assign file.%a_ptr_ref.var, %addr
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- implicit.impl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %const: type = const_type %i32 [concrete]
// CHECK:STDOUT: %ptr: type = ptr_type %const [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Implicit.F = import_ref Implicit//default, F, unloaded
// CHECK:STDOUT: %Implicit.a_ref: ref %const = import_ref Implicit//default, a_ref, loaded
// CHECK:STDOUT: %Implicit.a_ptr_ref: ref %ptr = import_ref Implicit//default, a_ptr_ref, loaded
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Int = %Core.Int
// 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: .F = imports.%Implicit.F
// CHECK:STDOUT: .a_ref = imports.%Implicit.a_ref
// CHECK:STDOUT: .a_ptr_ref = imports.%Implicit.a_ptr_ref
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .a = %a
// CHECK:STDOUT: .a_ptr = %a_ptr
// CHECK:STDOUT: }
// CHECK:STDOUT: %Implicit.import = import Implicit
// CHECK:STDOUT: %default.import = import <none>
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %a.patt: %ptr = binding_pattern a
// CHECK:STDOUT: %.loc6_1: %ptr = var_pattern %a.patt
// CHECK:STDOUT: }
// CHECK:STDOUT: %a.var: ref %ptr = var a
// CHECK:STDOUT: %.loc6_17: type = splice_block %ptr.loc6 [concrete = constants.%ptr] {
// CHECK:STDOUT: %int_32.loc6: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc6: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %const.loc6: type = const_type %i32.loc6 [concrete = constants.%const]
// CHECK:STDOUT: %ptr.loc6: type = ptr_type %const.loc6 [concrete = constants.%ptr]
// CHECK:STDOUT: }
// CHECK:STDOUT: %a: ref %ptr = bind_name a, %a.var
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %a_ptr.patt: %ptr = binding_pattern a_ptr
// CHECK:STDOUT: %.loc7_1: %ptr = var_pattern %a_ptr.patt
// CHECK:STDOUT: }
// CHECK:STDOUT: %a_ptr.var: ref %ptr = var a_ptr
// CHECK:STDOUT: %.loc7_21: type = splice_block %ptr.loc7 [concrete = constants.%ptr] {
// CHECK:STDOUT: %int_32.loc7: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc7: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %const.loc7: type = const_type %i32.loc7 [concrete = constants.%const]
// CHECK:STDOUT: %ptr.loc7: type = ptr_type %const.loc7 [concrete = constants.%ptr]
// CHECK:STDOUT: }
// CHECK:STDOUT: %a_ptr: ref %ptr = bind_name a_ptr, %a_ptr.var
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @__global_init() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %a_ref.ref: ref %const = name_ref a_ref, imports.%Implicit.a_ref
// CHECK:STDOUT: %addr: %ptr = addr_of %a_ref.ref
// CHECK:STDOUT: assign file.%a.var, %addr
// CHECK:STDOUT: %a_ptr_ref.ref: ref %ptr = name_ref a_ptr_ref, imports.%Implicit.a_ptr_ref
// CHECK:STDOUT: %.loc7: %ptr = bind_value %a_ptr_ref.ref
// CHECK:STDOUT: assign file.%a_ptr.var, %.loc7
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
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