mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Richard Smith
b44ba47cf3
Add `Dependent` value and initializing representations for types whose representations are unknown because they are dependent. When generating SemIR in such cases, use a worst-case initializing representation that both provides a destination address and also propagates a potential result value. Use this to fix incorrect lowering and lowering crashes for specific functions involving generic types that don't use a copy value representation. In lowering, be careful to distinguish between whether the initializing representation for the generic return type uses a return slot (which affects whether the SemIR declaration and call have one) and whether the initializing representation for the specific return type uses a return slot (which affects whether the LLVM IR declaration and call have one).
89 lines
4.2 KiB
Plaintext
89 lines
4.2 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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// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/convert.carbon
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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/interop/cpp/enum/copy.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/interop/cpp/enum/copy.carbon
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// --- enum.h
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enum Enum : short { a, b, c };
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// --- copy_enum.carbon
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library "[[@TEST_NAME]]";
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import Cpp library "enum.h";
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//@dump-sem-ir-begin
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fn F() {
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var a: Cpp.Enum = Cpp.Enum.a;
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a = Cpp.Enum.b;
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}
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//@dump-sem-ir-end
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// CHECK:STDOUT: --- copy_enum.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
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// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
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// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
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// CHECK:STDOUT: %Enum: type = class_type @Enum [concrete]
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// CHECK:STDOUT: %pattern_type.ebf: type = pattern_type %Enum [concrete]
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// CHECK:STDOUT: %int_0: %Enum = int_value 0 [concrete]
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// CHECK:STDOUT: %int_1: %Enum = int_value 1 [concrete]
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// CHECK:STDOUT: %T.as.Destroy.impl.Op.type.69f: type = fn_type @T.as.Destroy.impl.Op, @T.as.Destroy.impl(%Enum) [concrete]
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// CHECK:STDOUT: %T.as.Destroy.impl.Op.cd4: %T.as.Destroy.impl.Op.type.69f = struct_value () [concrete]
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// CHECK:STDOUT: %ptr.47b: type = ptr_type %Enum [concrete]
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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: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
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// CHECK:STDOUT: .Enum = %Enum.decl
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// CHECK:STDOUT: import Cpp//...
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Enum.decl: type = class_decl @Enum [concrete = constants.%Enum] {} {}
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// CHECK:STDOUT: %int_0: %Enum = int_value 0 [concrete = constants.%int_0]
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// CHECK:STDOUT: %int_1: %Enum = int_value 1 [concrete = constants.%int_1]
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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: %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {} {}
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @F() {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: name_binding_decl {
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// CHECK:STDOUT: %a.patt: %pattern_type.ebf = binding_pattern a [concrete]
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// CHECK:STDOUT: %a.var_patt: %pattern_type.ebf = var_pattern %a.patt [concrete]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %a.var: ref %Enum = var %a.var_patt
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// CHECK:STDOUT: %Cpp.ref.loc8_21: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %Enum.ref.loc8_24: type = name_ref Enum, imports.%Enum.decl [concrete = constants.%Enum]
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// CHECK:STDOUT: %a.ref.loc8: %Enum = name_ref a, imports.%int_0 [concrete = constants.%int_0]
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// CHECK:STDOUT: assign %a.var, %a.ref.loc8
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// CHECK:STDOUT: %.loc8: type = splice_block %Enum.ref.loc8_13 [concrete = constants.%Enum] {
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// CHECK:STDOUT: %Cpp.ref.loc8_10: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %Enum.ref.loc8_13: type = name_ref Enum, imports.%Enum.decl [concrete = constants.%Enum]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %a: ref %Enum = bind_name a, %a.var
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// CHECK:STDOUT: %a.ref.loc10: ref %Enum = name_ref a, %a
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// CHECK:STDOUT: %Cpp.ref.loc10: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %Enum.ref.loc10: type = name_ref Enum, imports.%Enum.decl [concrete = constants.%Enum]
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// CHECK:STDOUT: %b.ref: %Enum = name_ref b, imports.%int_1 [concrete = constants.%int_1]
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// CHECK:STDOUT: assign %a.ref.loc10, %b.ref
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// CHECK:STDOUT: %T.as.Destroy.impl.Op.bound: <bound method> = bound_method %a.var, constants.%T.as.Destroy.impl.Op.cd4
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// CHECK:STDOUT: <elided>
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// CHECK:STDOUT: %bound_method: <bound method> = bound_method %a.var, %T.as.Destroy.impl.Op.specific_fn
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// CHECK:STDOUT: %addr: %ptr.47b = addr_of %a.var
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// CHECK:STDOUT: %T.as.Destroy.impl.Op.call: init %empty_tuple.type = call %bound_method(%addr)
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// CHECK:STDOUT: return
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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