mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-30 10:45:00 +01:00
Richard Smith
246ec785df
Add a builtin `"int.convert"` supporting unchecked conversions between different integer types. This performs a truncation, zero-extension, or sign-extension, depending on the widths of the operands and the signedness of the source type. Add explicit `As` support to the prelude. No implicit conversions are supported yet as we don't have a way to express the constraint that we can only implicitly convert to wider types.
324 lines
18 KiB
Plaintext
324 lines
18 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/class/import.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/import.carbon
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// --- a.carbon
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library "[[@TEST_NAME]]";
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class Empty {
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}
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class Field {
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var x: i32;
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}
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class ForwardDeclared;
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class ForwardDeclared {
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fn F[self: Self]();
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fn G[addr self: Self*]();
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}
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class Incomplete;
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// --- b.carbon
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library "[[@TEST_NAME]]";
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import library "a";
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fn Run() {
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var a: Empty = {};
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var b: Field = {.x = 1};
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b.x = 2;
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var c: ForwardDeclared = {};
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c.F();
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c.G();
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var d: ForwardDeclared* = &c;
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var e: Incomplete*;
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}
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// CHECK:STDOUT: --- a.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %Empty: type = class_type @Empty [template]
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// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [template]
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// CHECK:STDOUT: %complete_type.357: <witness> = complete_type_witness %empty_struct_type [template]
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// CHECK:STDOUT: %Field: type = class_type @Field [template]
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// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [template]
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// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [template]
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// CHECK:STDOUT: %Field.elem: type = unbound_element_type %Field, %i32 [template]
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// CHECK:STDOUT: %struct_type.x: type = struct_type {.x: %i32} [template]
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// CHECK:STDOUT: %complete_type.f6d: <witness> = complete_type_witness %struct_type.x [template]
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// CHECK:STDOUT: %ForwardDeclared: type = class_type @ForwardDeclared [template]
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// CHECK:STDOUT: %F.type: type = fn_type @F [template]
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// CHECK:STDOUT: %F: %F.type = struct_value () [template]
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// CHECK:STDOUT: %ptr: type = ptr_type %ForwardDeclared [template]
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// CHECK:STDOUT: %G.type: type = fn_type @G [template]
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// CHECK:STDOUT: %G: %G.type = struct_value () [template]
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// CHECK:STDOUT: %Incomplete: type = class_type @Incomplete [template]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: imports {
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// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
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// CHECK:STDOUT: .Int = %import_ref.187
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// CHECK:STDOUT: import Core//prelude
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// CHECK:STDOUT: import Core//prelude/...
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: file {
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// CHECK:STDOUT: package: <namespace> = namespace [template] {
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// CHECK:STDOUT: .Core = imports.%Core
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// CHECK:STDOUT: .Empty = %Empty.decl
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// CHECK:STDOUT: .Field = %Field.decl
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// CHECK:STDOUT: .ForwardDeclared = %ForwardDeclared.decl.loc11
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// CHECK:STDOUT: .Incomplete = %Incomplete.decl
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Core.import = import Core
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// CHECK:STDOUT: %Empty.decl: type = class_decl @Empty [template = constants.%Empty] {} {}
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// CHECK:STDOUT: %Field.decl: type = class_decl @Field [template = constants.%Field] {} {}
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// CHECK:STDOUT: %ForwardDeclared.decl.loc11: type = class_decl @ForwardDeclared [template = constants.%ForwardDeclared] {} {}
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// CHECK:STDOUT: %ForwardDeclared.decl.loc13: type = class_decl @ForwardDeclared [template = constants.%ForwardDeclared] {} {}
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// CHECK:STDOUT: %Incomplete.decl: type = class_decl @Incomplete [template = constants.%Incomplete] {} {}
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @Empty {
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// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %empty_struct_type [template = constants.%complete_type.357]
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = constants.%Empty
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// CHECK:STDOUT: complete_type_witness = %complete_type
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @Field {
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// CHECK:STDOUT: %.loc8: %Field.elem = field_decl x, element0 [template]
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// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %struct_type.x [template = constants.%complete_type.f6d]
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = constants.%Field
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// CHECK:STDOUT: .x = %.loc8
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// CHECK:STDOUT: complete_type_witness = %complete_type
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @ForwardDeclared {
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// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [template = constants.%F] {
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// CHECK:STDOUT: %self.patt: %ForwardDeclared = binding_pattern self
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// CHECK:STDOUT: %self.param_patt: %ForwardDeclared = value_param_pattern %self.patt, runtime_param0
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// CHECK:STDOUT: } {
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// CHECK:STDOUT: %self.param: %ForwardDeclared = value_param runtime_param0
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// CHECK:STDOUT: %Self.ref: type = name_ref Self, constants.%ForwardDeclared [template = constants.%ForwardDeclared]
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// CHECK:STDOUT: %self: %ForwardDeclared = bind_name self, %self.param
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %G.decl: %G.type = fn_decl @G [template = constants.%G] {
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// CHECK:STDOUT: %self.patt: %ptr = binding_pattern self
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// CHECK:STDOUT: %self.param_patt: %ptr = value_param_pattern %self.patt, runtime_param0
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// CHECK:STDOUT: %.loc15_8: auto = addr_pattern %self.param_patt
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// CHECK:STDOUT: } {
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// CHECK:STDOUT: %self.param: %ptr = value_param runtime_param0
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// CHECK:STDOUT: %.loc15_23: type = splice_block %ptr [template = constants.%ptr] {
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// CHECK:STDOUT: %Self.ref: type = name_ref Self, constants.%ForwardDeclared [template = constants.%ForwardDeclared]
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// CHECK:STDOUT: %ptr: type = ptr_type %ForwardDeclared [template = constants.%ptr]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %self: %ptr = bind_name self, %self.param
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %empty_struct_type [template = constants.%complete_type.357]
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = constants.%ForwardDeclared
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// CHECK:STDOUT: .F = %F.decl
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// CHECK:STDOUT: .G = %G.decl
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// CHECK:STDOUT: complete_type_witness = %complete_type
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @Incomplete;
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @F[%self.param_patt: %ForwardDeclared]();
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @G[addr %self.param_patt: %ptr]();
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// CHECK:STDOUT:
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// CHECK:STDOUT: --- b.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %Run.type: type = fn_type @Run [template]
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// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [template]
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// CHECK:STDOUT: %Run: %Run.type = struct_value () [template]
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// CHECK:STDOUT: %Empty: type = class_type @Empty [template]
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// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [template]
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// CHECK:STDOUT: %complete_type.357: <witness> = complete_type_witness %empty_struct_type [template]
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// CHECK:STDOUT: %Empty.val: %Empty = struct_value () [template]
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// CHECK:STDOUT: %Field: type = class_type @Field [template]
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// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [template]
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// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [template]
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// CHECK:STDOUT: %struct_type.x.6d6: type = struct_type {.x: %i32} [template]
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// CHECK:STDOUT: %complete_type.555: <witness> = complete_type_witness %struct_type.x.6d6 [template]
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// CHECK:STDOUT: %int_1.5b8: Core.IntLiteral = int_value 1 [template]
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// CHECK:STDOUT: %struct_type.x.c96: type = struct_type {.x: Core.IntLiteral} [template]
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// CHECK:STDOUT: %Convert.type.e4d: type = fn_type @Convert.1, @ImplicitAs(%i32) [template]
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// CHECK:STDOUT: %impl_witness.5b0: <witness> = impl_witness (imports.%import_ref.723), @impl.1(%int_32) [template]
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// CHECK:STDOUT: %Convert.type.466: type = fn_type @Convert.2, @impl.1(%int_32) [template]
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// CHECK:STDOUT: %Convert.925: %Convert.type.466 = struct_value () [template]
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// CHECK:STDOUT: %Convert.bound.afd: <bound method> = bound_method %int_1.5b8, %Convert.925 [template]
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// CHECK:STDOUT: %Convert.specific_fn.b73: <specific function> = specific_function %Convert.bound.afd, @Convert.2(%int_32) [template]
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// CHECK:STDOUT: %int_1.059: %i32 = int_value 1 [template]
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// CHECK:STDOUT: %Field.val: %Field = struct_value (%int_1.059) [template]
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// CHECK:STDOUT: %Field.elem: type = unbound_element_type %Field, %i32 [template]
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// CHECK:STDOUT: %int_2.ecc: Core.IntLiteral = int_value 2 [template]
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// CHECK:STDOUT: %Convert.bound.f0b: <bound method> = bound_method %int_2.ecc, %Convert.925 [template]
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// CHECK:STDOUT: %Convert.specific_fn.20e: <specific function> = specific_function %Convert.bound.f0b, @Convert.2(%int_32) [template]
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// CHECK:STDOUT: %int_2.ed9: %i32 = int_value 2 [template]
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// CHECK:STDOUT: %ForwardDeclared.7b34f2.1: type = class_type @ForwardDeclared.1 [template]
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// CHECK:STDOUT: %ForwardDeclared.val: %ForwardDeclared.7b34f2.1 = struct_value () [template]
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// CHECK:STDOUT: %F.type: type = fn_type @F [template]
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// CHECK:STDOUT: %F: %F.type = struct_value () [template]
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// CHECK:STDOUT: %G.type: type = fn_type @G [template]
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// CHECK:STDOUT: %G: %G.type = struct_value () [template]
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// CHECK:STDOUT: %ptr.6cf: type = ptr_type %ForwardDeclared.7b34f2.1 [template]
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// CHECK:STDOUT: %Incomplete: type = class_type @Incomplete [template]
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// CHECK:STDOUT: %ptr.c62: type = ptr_type %Incomplete [template]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: imports {
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// CHECK:STDOUT: %import_ref.b50: type = import_ref Main//a, Empty, loaded [template = constants.%Empty]
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// CHECK:STDOUT: %import_ref.ad2: type = import_ref Main//a, Field, loaded [template = constants.%Field]
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// CHECK:STDOUT: %import_ref.a15: type = import_ref Main//a, ForwardDeclared, loaded [template = constants.%ForwardDeclared.7b34f2.1]
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// CHECK:STDOUT: %import_ref.81e: type = import_ref Main//a, Incomplete, loaded [template = constants.%Incomplete]
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// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
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// CHECK:STDOUT: .ImplicitAs = %import_ref.a69
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// CHECK:STDOUT: import Core//prelude
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// CHECK:STDOUT: import Core//prelude/...
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %import_ref.8f24d3.1: <witness> = import_ref Main//a, loc5_1, loaded [template = constants.%complete_type.357]
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// CHECK:STDOUT: %import_ref.fd7 = import_ref Main//a, inst16 [no loc], unloaded
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// CHECK:STDOUT: %import_ref.377: <witness> = import_ref Main//a, loc9_1, loaded [template = constants.%complete_type.555]
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// CHECK:STDOUT: %import_ref.845 = import_ref Main//a, inst21 [no loc], unloaded
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// CHECK:STDOUT: %import_ref.64e: %Field.elem = import_ref Main//a, loc8_8, loaded [template = %.259]
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// CHECK:STDOUT: %import_ref.8f24d3.2: <witness> = import_ref Main//a, loc16_1, loaded [template = constants.%complete_type.357]
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// CHECK:STDOUT: %import_ref.39e731.1 = import_ref Main//a, inst56 [no loc], unloaded
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// CHECK:STDOUT: %import_ref.40e: %F.type = import_ref Main//a, loc14_21, loaded [template = constants.%F]
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// CHECK:STDOUT: %import_ref.876: %G.type = import_ref Main//a, loc15_27, loaded [template = constants.%G]
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// CHECK:STDOUT: %import_ref.8f24d3.3: <witness> = import_ref Main//a, loc16_1, loaded [template = constants.%complete_type.357]
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// CHECK:STDOUT: %import_ref.39e731.2 = import_ref Main//a, inst56 [no loc], unloaded
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// CHECK:STDOUT: %import_ref.31e = import_ref Main//a, loc14_21, unloaded
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// CHECK:STDOUT: %import_ref.ed7 = import_ref Main//a, loc15_27, unloaded
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: file {
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// CHECK:STDOUT: package: <namespace> = namespace [template] {
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// CHECK:STDOUT: .Empty = imports.%import_ref.b50
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// CHECK:STDOUT: .Field = imports.%import_ref.ad2
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// CHECK:STDOUT: .ForwardDeclared = imports.%import_ref.a15
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// CHECK:STDOUT: .Incomplete = imports.%import_ref.81e
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// CHECK:STDOUT: .Core = imports.%Core
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// CHECK:STDOUT: .Run = %Run.decl
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Core.import = import Core
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// CHECK:STDOUT: %default.import = import <invalid>
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// CHECK:STDOUT: %Run.decl: %Run.type = fn_decl @Run [template = constants.%Run] {} {}
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @Empty [from "a.carbon"] {
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = imports.%import_ref.fd7
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// CHECK:STDOUT: complete_type_witness = imports.%import_ref.8f24d3.1
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @Field [from "a.carbon"] {
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = imports.%import_ref.845
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// CHECK:STDOUT: .x = imports.%import_ref.64e
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// CHECK:STDOUT: complete_type_witness = imports.%import_ref.377
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @ForwardDeclared.1 [from "a.carbon"] {
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = imports.%import_ref.39e731.1
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// CHECK:STDOUT: .F = imports.%import_ref.40e
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// CHECK:STDOUT: .G = imports.%import_ref.876
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// CHECK:STDOUT: complete_type_witness = imports.%import_ref.8f24d3.2
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @ForwardDeclared.2 [from "a.carbon"] {
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = imports.%import_ref.39e731.2
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// CHECK:STDOUT: .F = imports.%import_ref.31e
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// CHECK:STDOUT: .G = imports.%import_ref.ed7
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// CHECK:STDOUT: complete_type_witness = imports.%import_ref.8f24d3.3
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @Incomplete [from "a.carbon"];
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @Run() {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %a.var: ref %Empty = var a
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// CHECK:STDOUT: %a: ref %Empty = bind_name a, %a.var
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// CHECK:STDOUT: %.loc7_19.1: %empty_struct_type = struct_literal ()
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// CHECK:STDOUT: %.loc7_19.2: init %Empty = class_init (), %a.var [template = constants.%Empty.val]
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// CHECK:STDOUT: %.loc7_20: init %Empty = converted %.loc7_19.1, %.loc7_19.2 [template = constants.%Empty.val]
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// CHECK:STDOUT: assign %a.var, %.loc7_20
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// CHECK:STDOUT: %b.var: ref %Field = var b
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// CHECK:STDOUT: %b: ref %Field = bind_name b, %b.var
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// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [template = constants.%int_1.5b8]
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// CHECK:STDOUT: %.loc9_25.1: %struct_type.x.c96 = struct_literal (%int_1)
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// CHECK:STDOUT: %impl.elem0.loc9: %Convert.type.e4d = impl_witness_access constants.%impl_witness.5b0, element0 [template = constants.%Convert.925]
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// CHECK:STDOUT: %Convert.bound.loc9: <bound method> = bound_method %int_1, %impl.elem0.loc9 [template = constants.%Convert.bound.afd]
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// CHECK:STDOUT: %Convert.specific_fn.loc9: <specific function> = specific_function %Convert.bound.loc9, @Convert.2(constants.%int_32) [template = constants.%Convert.specific_fn.b73]
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// CHECK:STDOUT: %int.convert_checked.loc9: init %i32 = call %Convert.specific_fn.loc9(%int_1) [template = constants.%int_1.059]
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// CHECK:STDOUT: %.loc9_25.2: init %i32 = converted %int_1, %int.convert_checked.loc9 [template = constants.%int_1.059]
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// CHECK:STDOUT: %.loc9_25.3: ref %i32 = class_element_access %b.var, element0
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// CHECK:STDOUT: %.loc9_25.4: init %i32 = initialize_from %.loc9_25.2 to %.loc9_25.3 [template = constants.%int_1.059]
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// CHECK:STDOUT: %.loc9_25.5: init %Field = class_init (%.loc9_25.4), %b.var [template = constants.%Field.val]
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// CHECK:STDOUT: %.loc9_26: init %Field = converted %.loc9_25.1, %.loc9_25.5 [template = constants.%Field.val]
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// CHECK:STDOUT: assign %b.var, %.loc9_26
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// CHECK:STDOUT: %b.ref: ref %Field = name_ref b, %b
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// CHECK:STDOUT: %x.ref: %Field.elem = name_ref x, imports.%import_ref.64e [template = imports.%.259]
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// CHECK:STDOUT: %.loc10_4: ref %i32 = class_element_access %b.ref, element0
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// CHECK:STDOUT: %int_2: Core.IntLiteral = int_value 2 [template = constants.%int_2.ecc]
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// CHECK:STDOUT: %impl.elem0.loc10: %Convert.type.e4d = impl_witness_access constants.%impl_witness.5b0, element0 [template = constants.%Convert.925]
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// CHECK:STDOUT: %Convert.bound.loc10: <bound method> = bound_method %int_2, %impl.elem0.loc10 [template = constants.%Convert.bound.f0b]
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// CHECK:STDOUT: %Convert.specific_fn.loc10: <specific function> = specific_function %Convert.bound.loc10, @Convert.2(constants.%int_32) [template = constants.%Convert.specific_fn.20e]
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// CHECK:STDOUT: %int.convert_checked.loc10: init %i32 = call %Convert.specific_fn.loc10(%int_2) [template = constants.%int_2.ed9]
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// CHECK:STDOUT: %.loc10_7: init %i32 = converted %int_2, %int.convert_checked.loc10 [template = constants.%int_2.ed9]
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// CHECK:STDOUT: assign %.loc10_4, %.loc10_7
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// CHECK:STDOUT: %c.var: ref %ForwardDeclared.7b34f2.1 = var c
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// CHECK:STDOUT: %c: ref %ForwardDeclared.7b34f2.1 = bind_name c, %c.var
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// CHECK:STDOUT: %.loc12_29.1: %empty_struct_type = struct_literal ()
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// CHECK:STDOUT: %.loc12_29.2: init %ForwardDeclared.7b34f2.1 = class_init (), %c.var [template = constants.%ForwardDeclared.val]
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// CHECK:STDOUT: %.loc12_30: init %ForwardDeclared.7b34f2.1 = converted %.loc12_29.1, %.loc12_29.2 [template = constants.%ForwardDeclared.val]
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// CHECK:STDOUT: assign %c.var, %.loc12_30
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// CHECK:STDOUT: %c.ref.loc13: ref %ForwardDeclared.7b34f2.1 = name_ref c, %c
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// CHECK:STDOUT: %F.ref: %F.type = name_ref F, imports.%import_ref.40e [template = constants.%F]
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// CHECK:STDOUT: %F.bound: <bound method> = bound_method %c.ref.loc13, %F.ref
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// CHECK:STDOUT: %.loc13: %ForwardDeclared.7b34f2.1 = bind_value %c.ref.loc13
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// CHECK:STDOUT: %F.call: init %empty_tuple.type = call %F.bound(%.loc13)
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// CHECK:STDOUT: %c.ref.loc14: ref %ForwardDeclared.7b34f2.1 = name_ref c, %c
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// CHECK:STDOUT: %G.ref: %G.type = name_ref G, imports.%import_ref.876 [template = constants.%G]
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// CHECK:STDOUT: %G.bound: <bound method> = bound_method %c.ref.loc14, %G.ref
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// CHECK:STDOUT: %addr.loc14: %ptr.6cf = addr_of %c.ref.loc14
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// CHECK:STDOUT: %G.call: init %empty_tuple.type = call %G.bound(%addr.loc14)
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// CHECK:STDOUT: %d.var: ref %ptr.6cf = var d
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// CHECK:STDOUT: %d: ref %ptr.6cf = bind_name d, %d.var
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// CHECK:STDOUT: %c.ref.loc16: ref %ForwardDeclared.7b34f2.1 = name_ref c, %c
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// CHECK:STDOUT: %addr.loc16: %ptr.6cf = addr_of %c.ref.loc16
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// CHECK:STDOUT: assign %d.var, %addr.loc16
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// CHECK:STDOUT: %e.var: ref %ptr.c62 = var e
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// CHECK:STDOUT: %e: ref %ptr.c62 = bind_name e, %e.var
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// CHECK:STDOUT: return
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @F[%self.param_patt: %ForwardDeclared.7b34f2.1]() [from "a.carbon"];
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @G[addr <unexpected>.inst1063: %ptr.6cf]() [from "a.carbon"];
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// CHECK:STDOUT:
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