mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-05 22:02:55 +01:00
Richard Smith
1b335402d1
Move completeness check to the point where the function is defined or first called. This means we also defer deciding whether the function has a return slot until that point. Instead of storing a return slot per function, store the location of the return storage, which may or may not be used, and compute and store a separate flag saying whether to use it at the point of first use or definition. This is the final piece in supporting simple `Make` functions in classes as a replacement for constructors.
71 lines
2.6 KiB
Plaintext
71 lines
2.6 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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class Class {
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var field: i32;
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fn F() -> i32 {
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// CHECK:STDERR: fail_unbound_field.carbon:[[@LINE+4]]:12: ERROR: Expression cannot be used as a value.
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// CHECK:STDERR: return field;
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// CHECK:STDERR: ^~~~~
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// CHECK:STDERR:
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return field;
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}
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}
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fn G() -> i32 {
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// CHECK:STDERR: fail_unbound_field.carbon:[[@LINE+3]]:10: ERROR: Expression cannot be used as a value.
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// CHECK:STDERR: return Class.field;
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// CHECK:STDERR: ^~~~~~~~~~~
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return Class.field;
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}
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// CHECK:STDOUT: --- fail_unbound_field.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %Class: type = class_type @Class [template]
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// CHECK:STDOUT: %.1: type = unbound_element_type Class, i32 [template]
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// CHECK:STDOUT: %.2: type = struct_type {.field: i32} [template]
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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 = %Core
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// CHECK:STDOUT: .Class = %Class.decl
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// CHECK:STDOUT: .G = %G
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Core: <namespace> = namespace [template] {}
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// CHECK:STDOUT: %Class.decl: type = class_decl @Class [template = constants.%Class] {}
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// CHECK:STDOUT: %G: <function> = fn_decl @G [template] {
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// CHECK:STDOUT: @G.%return: ref i32 = var <return slot>
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @Class {
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// CHECK:STDOUT: %.loc8: <unbound element of class Class> = field_decl field, element0 [template]
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// CHECK:STDOUT: %F: <function> = fn_decl @F [template] {
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// CHECK:STDOUT: %return.var: ref i32 = var <return slot>
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = constants.%Class
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// CHECK:STDOUT: .field = %.loc8
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// CHECK:STDOUT: .F = %F
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @F() -> i32 {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %field.ref: <unbound element of class Class> = name_ref field, @Class.%.loc8 [template = @Class.%.loc8]
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// CHECK:STDOUT: return <error>
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @G() -> i32 {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %Class.ref: type = name_ref Class, file.%Class.decl [template = constants.%Class]
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// CHECK:STDOUT: %field.ref: <unbound element of class Class> = name_ref field, @Class.%.loc8 [template = @Class.%.loc8]
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// CHECK:STDOUT: return <error>
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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