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carbon-lang/toolchain/check/testdata/array/init_dependent_bound.carbon
T
Richard Smith 344f0b7550 Support for heterogeneous operators. (#5653) 
Replace the binary `Operation` interfaces with the `OperationWith(T:!
type)` interfaces described in the design, and add a `Result` associated
type for both unary and binary operations. Update the `impl`s in the
prelude for integer types to use the new form, including supporting
implicit conversion of either operand.

I've tried to split this PR up into commits focused on distinct changes
for review convenience. It may be simplest to review it one commit at a
time.
2025-06-13 01:55:24 +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/array/init_dependent_bound.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/array/init_dependent_bound.carbon
// --- generic_empty.carbon
library "[[@TEST_NAME]]";
fn G(T:! type) {
// We can initialize this without knowing T.
//@dump-sem-ir-begin
var arr: array(T, 0) = ();
//@dump-sem-ir-end
}
class C {}
fn H() {
G(C);
}
// --- fail_init_dependent_bound.carbon
library "[[@TEST_NAME]]";
fn F(N:! i32) {
// CHECK:STDERR: fail_init_dependent_bound.carbon:[[@LINE+4]]:28: error: cannot initialize array with dependent bound from a list of initializers [ArrayInitDependentBound]
// CHECK:STDERR: var arr: array(i32, N) = (1, 2, 3);
// CHECK:STDERR: ^~~~~~~~~
// CHECK:STDERR:
var arr: array(i32, N) = (1, 2, 3);
}
// --- fail_todo_init_template_dependent_bound.carbon
library "[[@TEST_NAME]]";
// TODO: This should be valid.
fn G(template N:! i32) {
//@dump-sem-ir-begin
// CHECK:STDERR: fail_todo_init_template_dependent_bound.carbon:[[@LINE+4]]:12: error: cannot evaluate type expression [TypeExprEvaluationFailure]
// CHECK:STDERR: var arr: array(i32, N) = (1, 2, 3);
// CHECK:STDERR: ^~~~~~~~~~~~~
// CHECK:STDERR:
var arr: array(i32, N) = (1, 2, 3);
//@dump-sem-ir-end
}
fn H() { G(3); }
// CHECK:STDOUT: --- generic_empty.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %T: type = bind_symbolic_name T, 0 [symbolic]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %int_0: Core.IntLiteral = int_value 0 [concrete]
// CHECK:STDOUT: %array_type.281: type = array_type %int_0, %T [symbolic]
// CHECK:STDOUT: %require_complete: <witness> = require_complete_type %array_type.281 [symbolic]
// CHECK:STDOUT: %pattern_type.d48: type = pattern_type %array_type.281 [symbolic]
// CHECK:STDOUT: %array.2ed: %array_type.281 = tuple_value () [symbolic]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: %array_type.6f1: type = array_type %int_0, %C [concrete]
// CHECK:STDOUT: %complete_type.ed6: <witness> = complete_type_witness %array_type.6f1 [concrete]
// CHECK:STDOUT: %pattern_type.9c8: type = pattern_type %array_type.6f1 [concrete]
// CHECK:STDOUT: %array.2e5: %array_type.6f1 = tuple_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @G(%T.loc4_6.1: type) {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %array_type.loc7_22.2: type = array_type constants.%int_0, %T.loc4_6.2 [symbolic = %array_type.loc7_22.2 (constants.%array_type.281)]
// CHECK:STDOUT: %require_complete: <witness> = require_complete_type %array_type.loc7_22.2 [symbolic = %require_complete (constants.%require_complete)]
// CHECK:STDOUT: %pattern_type: type = pattern_type %array_type.loc7_22.2 [symbolic = %pattern_type (constants.%pattern_type.d48)]
// CHECK:STDOUT: %array: @G.%array_type.loc7_22.2 (%array_type.281) = tuple_value () [symbolic = %array (constants.%array.2ed)]
// CHECK:STDOUT:
// CHECK:STDOUT: fn() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %arr.patt: @G.%pattern_type (%pattern_type.d48) = binding_pattern arr [concrete]
// CHECK:STDOUT: %arr.var_patt: @G.%pattern_type (%pattern_type.d48) = var_pattern %arr.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %arr.var: ref @G.%array_type.loc7_22.2 (%array_type.281) = var %arr.var_patt
// CHECK:STDOUT: %.loc7_27.1: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT: %.loc7_27.2: init @G.%array_type.loc7_22.2 (%array_type.281) = array_init () to %arr.var [symbolic = %array (constants.%array.2ed)]
// CHECK:STDOUT: %.loc7_3: init @G.%array_type.loc7_22.2 (%array_type.281) = converted %.loc7_27.1, %.loc7_27.2 [symbolic = %array (constants.%array.2ed)]
// CHECK:STDOUT: assign %arr.var, %.loc7_3
// CHECK:STDOUT: %.loc7_22: type = splice_block %array_type.loc7_22.1 [symbolic = %array_type.loc7_22.2 (constants.%array_type.281)] {
// CHECK:STDOUT: %T.ref: type = name_ref T, %T.loc4_6.1 [symbolic = %T.loc4_6.2 (constants.%T)]
// CHECK:STDOUT: %int_0: Core.IntLiteral = int_value 0 [concrete = constants.%int_0]
// CHECK:STDOUT: %array_type.loc7_22.1: type = array_type %int_0, %T.ref [symbolic = %array_type.loc7_22.2 (constants.%array_type.281)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %arr: ref @G.%array_type.loc7_22.2 (%array_type.281) = bind_name arr, %arr.var
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @G(constants.%T) {
// CHECK:STDOUT: %T.loc4_6.2 => constants.%T
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @G(constants.%C) {
// CHECK:STDOUT: %T.loc4_6.2 => constants.%C
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %array_type.loc7_22.2 => constants.%array_type.6f1
// CHECK:STDOUT: %require_complete => constants.%complete_type.ed6
// CHECK:STDOUT: %pattern_type => constants.%pattern_type.9c8
// CHECK:STDOUT: %array => constants.%array.2e5
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_todo_init_template_dependent_bound.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: %N.51e: %i32 = bind_symbolic_name N, 0, template [template]
// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [concrete]
// CHECK:STDOUT: %int_2: Core.IntLiteral = int_value 2 [concrete]
// CHECK:STDOUT: %int_3.1ba: Core.IntLiteral = int_value 3 [concrete]
// CHECK:STDOUT: %tuple.type: type = tuple_type (Core.IntLiteral, Core.IntLiteral, Core.IntLiteral) [concrete]
// CHECK:STDOUT: %ImplicitAs.type.2fd: type = facet_type <@ImplicitAs, @ImplicitAs(Core.IntLiteral)> [concrete]
// CHECK:STDOUT: %From: Core.IntLiteral = bind_symbolic_name From, 0 [symbolic]
// CHECK:STDOUT: %Convert.type.708: type = fn_type @Convert.4, @impl.971(%From) [symbolic]
// CHECK:STDOUT: %Convert.c68: %Convert.type.708 = struct_value () [symbolic]
// CHECK:STDOUT: %Convert.type.71e: type = fn_type @Convert.1, @ImplicitAs(Core.IntLiteral) [concrete]
// CHECK:STDOUT: %int_3.822: %i32 = int_value 3 [concrete]
// CHECK:STDOUT: %ImplicitAs.impl_witness.a11: <witness> = impl_witness imports.%ImplicitAs.impl_witness_table.1d9, @impl.971(%int_32) [concrete]
// CHECK:STDOUT: %Convert.type.4ad: type = fn_type @Convert.4, @impl.971(%int_32) [concrete]
// CHECK:STDOUT: %Convert.960: %Convert.type.4ad = struct_value () [concrete]
// CHECK:STDOUT: %ImplicitAs.facet.f49: %ImplicitAs.type.2fd = facet_value %i32, (%ImplicitAs.impl_witness.a11) [concrete]
// CHECK:STDOUT: %.0ea: type = fn_type_with_self_type %Convert.type.71e, %ImplicitAs.facet.f49 [concrete]
// CHECK:STDOUT: %Convert.bound.2d6: <bound method> = bound_method %int_3.822, %Convert.960 [concrete]
// CHECK:STDOUT: %Convert.specific_fn.8a8: <specific function> = specific_function %Convert.960, @Convert.4(%int_32) [concrete]
// CHECK:STDOUT: %bound_method.c6f: <bound method> = bound_method %int_3.822, %Convert.specific_fn.8a8 [concrete]
// CHECK:STDOUT: %inst.splice_block: <instruction> = inst_value [concrete] {
// CHECK:STDOUT: %.df7: Core.IntLiteral = splice_block %.dd0 [concrete = %int_3.1ba] {
// CHECK:STDOUT: %impl.elem0.c2d: %.0ea = impl_witness_access %ImplicitAs.impl_witness.a11, element0 [concrete = %Convert.960]
// CHECK:STDOUT: %bound_method.8d1: <bound method> = bound_method %int_3.822, %impl.elem0.c2d [concrete = %Convert.bound.2d6]
// CHECK:STDOUT: %specific_fn: <specific function> = specific_function %impl.elem0.c2d, @Convert.4(%int_32) [concrete = %Convert.specific_fn.8a8]
// CHECK:STDOUT: %bound_method.9ef: <bound method> = bound_method %int_3.822, %specific_fn [concrete = %bound_method.c6f]
// CHECK:STDOUT: %int.convert_checked.367: init Core.IntLiteral = call %bound_method.9ef(%int_3.822) [concrete = %int_3.1ba]
// CHECK:STDOUT: %.5d1: Core.IntLiteral = value_of_initializer %int.convert_checked.367 [concrete = %int_3.1ba]
// CHECK:STDOUT: %.dd0: Core.IntLiteral = converted %int_3.822, %.5d1 [concrete = %int_3.1ba]
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core.import_ref.85c: @impl.971.%Convert.type (%Convert.type.708) = import_ref Core//prelude/types/int, loc23_44, loaded [symbolic = @impl.971.%Convert (constants.%Convert.c68)]
// CHECK:STDOUT: %ImplicitAs.impl_witness_table.1d9 = impl_witness_table (%Core.import_ref.85c), @impl.971 [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @G(%N.loc5_15.1: %i32) {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %.loc11_23.2: <instruction> = convert_to_value_action %N.ref, Core.IntLiteral [template]
// CHECK:STDOUT:
// CHECK:STDOUT: fn() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %arr.patt: <error> = binding_pattern arr [concrete]
// CHECK:STDOUT: %arr.var_patt: <error> = var_pattern %arr.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %arr.var: ref <error> = var %arr.var_patt [concrete = <error>]
// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [concrete = constants.%int_1]
// CHECK:STDOUT: %int_2: Core.IntLiteral = int_value 2 [concrete = constants.%int_2]
// CHECK:STDOUT: %int_3: Core.IntLiteral = int_value 3 [concrete = constants.%int_3.1ba]
// CHECK:STDOUT: %.loc11_36: %tuple.type = tuple_literal (%int_1, %int_2, %int_3)
// CHECK:STDOUT: assign %arr.var, <error>
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: %arr: <error> = bind_name arr, <error> [concrete = <error>]
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @G(constants.%N.51e) {
// CHECK:STDOUT: %N.loc5_15.2 => constants.%N.51e
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @G(constants.%int_3.822) {
// CHECK:STDOUT: %N.loc5_15.2 => constants.%int_3.822
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %.loc11_23.2 => constants.%inst.splice_block
// CHECK:STDOUT: }
// CHECK:STDOUT:
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