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carbon-lang/toolchain/check/testdata/function/call/i32.carbon
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Richard SmithandGeoff Romer 1ec8ac7ef9 Add Copy interface and use it for making copies. (#6034) 
Instead of hardcoding which types are copyable, add a `Core.Copy`
interface to perform copying. Move almost all the current copy support
to that interface. Some remaining pieces are still using builtin logic
after this PR:

* For tuples and structs, builtin logic is used to perform elementwise
copies. This also supports copying *adapters of* tuples and structs,
which seems like it may not be desirable, especially for non-extending
adapters. A `Copy` impl is provided for tuples of at most 2 elements, so
that `Core.Copy` constraints are satisfied, but we can't implement this
generally until we have variadics support, and don't yet have a
mechanism to generalize this to structs.
* For `enum` types imported from C++, builtin logic is used to perform a
copy. This is temporary until we have a mechanism to identify these
types from an impl in the prelude.

One lowering test in `toolchain/lower/testdata/class/generic.carbon` is
disabled for now, as it causes a crash in the lowering code due to an
ABI mismatch between the call signature in the lowered declaration of a
specific function and the call that is generated in the specific callee.
Fixing this is a little involved, and will be done in a separate PR.

---------

Co-authored-by: Geoff Romer <gromer@google.com>
2025-09-10 23:55:55 +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/function/call/i32.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/function/call/i32.carbon
fn Echo(a: i32) -> i32 {
return a;
}
fn Main() {
var b: i32 = Echo(1);
}
// CHECK:STDOUT: --- i32.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: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %pattern_type.7ce: type = pattern_type %i32 [concrete]
// CHECK:STDOUT: %Echo.type: type = fn_type @Echo [concrete]
// CHECK:STDOUT: %Echo: %Echo.type = struct_value () [concrete]
// CHECK:STDOUT: %Main.type: type = fn_type @Main [concrete]
// CHECK:STDOUT: %Main: %Main.type = struct_value () [concrete]
// CHECK:STDOUT: %int_1.5b8: Core.IntLiteral = int_value 1 [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 = bind_symbolic_name To, 0 [symbolic]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.49e: type = fn_type @Core.IntLiteral.as.ImplicitAs.impl.Convert, @Core.IntLiteral.as.ImplicitAs.impl(%To) [symbolic]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.f01: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.49e = struct_value () [symbolic]
// CHECK:STDOUT: %ImplicitAs.impl_witness.acc: <witness> = impl_witness imports.%ImplicitAs.impl_witness_table.b6b, @Core.IntLiteral.as.ImplicitAs.impl(%int_32) [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.9ec: 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.592: %Core.IntLiteral.as.ImplicitAs.impl.Convert.type.9ec = struct_value () [concrete]
// CHECK:STDOUT: %ImplicitAs.facet: %ImplicitAs.type.e8c = facet_value Core.IntLiteral, (%ImplicitAs.impl_witness.acc) [concrete]
// CHECK:STDOUT: %.7ea: 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_1.5b8, %Core.IntLiteral.as.ImplicitAs.impl.Convert.592 [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn: <specific function> = specific_function %Core.IntLiteral.as.ImplicitAs.impl.Convert.592, @Core.IntLiteral.as.ImplicitAs.impl.Convert(%int_32) [concrete]
// CHECK:STDOUT: %bound_method: <bound method> = bound_method %int_1.5b8, %Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn [concrete]
// CHECK:STDOUT: %int_1.5d2: %i32 = int_value 1 [concrete]
// CHECK:STDOUT: %Destroy.type: type = facet_type <@Destroy> [concrete]
// CHECK:STDOUT: %Int.as.Destroy.impl.Op.type.11b: type = fn_type @Int.as.Destroy.impl.Op, @Int.as.Destroy.impl(%int_32) [concrete]
// CHECK:STDOUT: %Int.as.Destroy.impl.Op.054: %Int.as.Destroy.impl.Op.type.11b = struct_value () [concrete]
// CHECK:STDOUT: %ptr.235: type = ptr_type %i32 [concrete]
// CHECK:STDOUT: %Int.as.Destroy.impl.Op.specific_fn: <specific function> = specific_function %Int.as.Destroy.impl.Op.054, @Int.as.Destroy.impl.Op(%int_32) [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: .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.428: @Core.IntLiteral.as.ImplicitAs.impl.%Core.IntLiteral.as.ImplicitAs.impl.Convert.type (%Core.IntLiteral.as.ImplicitAs.impl.Convert.type.49e) = import_ref Core//prelude/parts/int, loc23_39, loaded [symbolic = @Core.IntLiteral.as.ImplicitAs.impl.%Core.IntLiteral.as.ImplicitAs.impl.Convert (constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.f01)]
// CHECK:STDOUT: %ImplicitAs.impl_witness_table.b6b = impl_witness_table (%Core.import_ref.428), @Core.IntLiteral.as.ImplicitAs.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: .Echo = %Echo.decl
// CHECK:STDOUT: .Main = %Main.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Echo.decl: %Echo.type = fn_decl @Echo [concrete = constants.%Echo] {
// CHECK:STDOUT: %a.patt: %pattern_type.7ce = binding_pattern a [concrete]
// CHECK:STDOUT: %a.param_patt: %pattern_type.7ce = value_param_pattern %a.patt, call_param0 [concrete]
// 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_param1 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %int_32.loc15_20: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc15_20: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %a.param: %i32 = value_param call_param0
// CHECK:STDOUT: %.loc15: type = splice_block %i32.loc15_12 [concrete = constants.%i32] {
// CHECK:STDOUT: %int_32.loc15_12: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc15_12: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: }
// CHECK:STDOUT: %a: %i32 = bind_name a, %a.param
// CHECK:STDOUT: %return.param: ref %i32 = out_param call_param1
// CHECK:STDOUT: %return: ref %i32 = return_slot %return.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %Main.decl: %Main.type = fn_decl @Main [concrete = constants.%Main] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Echo(%a.param: %i32) -> %i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %a.ref: %i32 = name_ref a, %a
// CHECK:STDOUT: return %a.ref
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Main() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %b.patt: %pattern_type.7ce = binding_pattern b [concrete]
// CHECK:STDOUT: %b.var_patt: %pattern_type.7ce = var_pattern %b.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %b.var: ref %i32 = var %b.var_patt
// CHECK:STDOUT: %Echo.ref: %Echo.type = name_ref Echo, file.%Echo.decl [concrete = constants.%Echo]
// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
// CHECK:STDOUT: %impl.elem0: %.7ea = impl_witness_access constants.%ImplicitAs.impl_witness.acc, element0 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.592]
// CHECK:STDOUT: %bound_method.loc20_21.1: <bound method> = bound_method %int_1, %impl.elem0 [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.bound]
// CHECK:STDOUT: %specific_fn: <specific function> = specific_function %impl.elem0, @Core.IntLiteral.as.ImplicitAs.impl.Convert(constants.%int_32) [concrete = constants.%Core.IntLiteral.as.ImplicitAs.impl.Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc20_21.2: <bound method> = bound_method %int_1, %specific_fn [concrete = constants.%bound_method]
// CHECK:STDOUT: %Core.IntLiteral.as.ImplicitAs.impl.Convert.call: init %i32 = call %bound_method.loc20_21.2(%int_1) [concrete = constants.%int_1.5d2]
// CHECK:STDOUT: %.loc20_21.1: %i32 = value_of_initializer %Core.IntLiteral.as.ImplicitAs.impl.Convert.call [concrete = constants.%int_1.5d2]
// CHECK:STDOUT: %.loc20_21.2: %i32 = converted %int_1, %.loc20_21.1 [concrete = constants.%int_1.5d2]
// CHECK:STDOUT: %Echo.call: init %i32 = call %Echo.ref(%.loc20_21.2)
// CHECK:STDOUT: assign %b.var, %Echo.call
// CHECK:STDOUT: %.loc20_10: type = splice_block %i32 [concrete = constants.%i32] {
// 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: }
// CHECK:STDOUT: %b: ref %i32 = bind_name b, %b.var
// CHECK:STDOUT: %Int.as.Destroy.impl.Op.bound: <bound method> = bound_method %b.var, constants.%Int.as.Destroy.impl.Op.054
// CHECK:STDOUT: %Int.as.Destroy.impl.Op.specific_fn: <specific function> = specific_function constants.%Int.as.Destroy.impl.Op.054, @Int.as.Destroy.impl.Op(constants.%int_32) [concrete = constants.%Int.as.Destroy.impl.Op.specific_fn]
// CHECK:STDOUT: %bound_method.loc20_3: <bound method> = bound_method %b.var, %Int.as.Destroy.impl.Op.specific_fn
// CHECK:STDOUT: %addr: %ptr.235 = addr_of %b.var
// CHECK:STDOUT: %Int.as.Destroy.impl.Op.call: init %empty_tuple.type = call %bound_method.loc20_3(%addr)
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
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