mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-30 16:25:01 +01:00
Jon Ross-Perkins
91f0c23124
Building on #3636 which handles the general import case, add special casing for namespaces. Namespaces can be combined cross-IR, so it's a little more complex. The implementation adds import_id to the Namespace instruction as a reference to find the original using the normal structure. This is achieved by moving the name_id to NameScope to free up space. --- I considered a few alternatives... I considered adding import_id to NameScope, but: 1. It's more consistent with things such as Function or Class that provide name_id on the info object rather than the instruction. 2. I thought it more likely that there would be more NameScope cases that might want a name_id rather than the import_id, since ImportRef will typically be used. I considered putting the import source (cross-ref IR id + inst id) on the NameScope versus a separate ImportRef, which seems like the strongest argument towards the NameScope approach because it removes an instruction. That just felt inconsistent though, and the overhead of instruction-per-imported-namespace should be low (theoretically few namespaces should be used). Plus I feel a bit odd adding two generally-unused ids to NameScope. A specialized Namespace structure could also have been created to store the import_id, but that would add an indirection to the NameScope.
93 lines
3.6 KiB
Plaintext
93 lines
3.6 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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base class Base {
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var a: i32;
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fn F[addr self: Self*]();
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}
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fn Base.F[addr self: Base*]() {
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(*self).a = 1;
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}
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class Derived {
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extend base: Base;
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}
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fn Call(p: Derived*) {
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(*p).F();
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}
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// CHECK:STDOUT: --- base_method.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %Base: type = class_type @Base [template]
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// CHECK:STDOUT: %.1: type = unbound_element_type Base, i32 [template]
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// CHECK:STDOUT: %.2: type = ptr_type Base [template]
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// CHECK:STDOUT: %.3: type = struct_type {.a: i32} [template]
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// CHECK:STDOUT: %.4: type = ptr_type {.a: i32} [template]
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// CHECK:STDOUT: %.5: i32 = int_literal 1 [template]
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// CHECK:STDOUT: %Derived: type = class_type @Derived [template]
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// CHECK:STDOUT: %.6: type = unbound_element_type Derived, Base [template]
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// CHECK:STDOUT: %.7: type = struct_type {.base: Base} [template]
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// CHECK:STDOUT: %.8: type = ptr_type Derived [template]
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// CHECK:STDOUT: %.9: type = struct_type {.base: {.a: i32}*} [template]
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// CHECK:STDOUT: %.10: type = ptr_type {.base: Base} [template]
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// CHECK:STDOUT: %.11: type = tuple_type () [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 {.Base = %Base.decl, .Derived = %Derived.decl, .Call = %Call} [template]
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// CHECK:STDOUT: %Base.decl = class_decl @Base, ()
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// CHECK:STDOUT: %F: <function> = fn_decl @F [template]
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// CHECK:STDOUT: %Derived.decl = class_decl @Derived, ()
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// CHECK:STDOUT: %Call: <function> = fn_decl @Call [template]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @Base {
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// CHECK:STDOUT: %.loc8: <unbound element of class Base> = field_decl a, element0 [template]
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// CHECK:STDOUT: %F: <function> = fn_decl @F [template]
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .a = %.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: class @Derived {
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// CHECK:STDOUT: %Base.ref: type = name_ref Base, constants.%Base [template = constants.%Base]
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// CHECK:STDOUT: %.loc18: <unbound element of class Derived> = base_decl Base, element0 [template]
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .base = %.loc18
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// CHECK:STDOUT: extend name_scope1
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @F[addr %self: Base*]() {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %self.ref: Base* = name_ref self, %self
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// CHECK:STDOUT: %.loc14_4: ref Base = deref %self.ref
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// CHECK:STDOUT: %.loc14_10: ref i32 = class_element_access %.loc14_4, element0
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// CHECK:STDOUT: %.loc14_15: i32 = int_literal 1 [template = constants.%.5]
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// CHECK:STDOUT: assign %.loc14_10, %.loc14_15
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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 @Call(%p: Derived*) {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %p.ref: Derived* = name_ref p, %p
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// CHECK:STDOUT: %.loc22_4.1: ref Derived = deref %p.ref
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// CHECK:STDOUT: %.loc22_7: <bound method> = bound_method %.loc22_4.1, @Base.%F
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// CHECK:STDOUT: %.loc22_4.2: Derived* = addr_of %.loc22_4.1
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// CHECK:STDOUT: %.loc22_9.1: ref Derived = deref %.loc22_4.2
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// CHECK:STDOUT: %.loc22_9.2: ref Base = class_element_access %.loc22_9.1, element0
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// CHECK:STDOUT: %.loc22_9.3: Base* = addr_of %.loc22_9.2
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// CHECK:STDOUT: %.loc22_4.3: Base* = converted %.loc22_4.2, %.loc22_9.3
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// CHECK:STDOUT: %.loc22_9.4: init () = call %.loc22_7(%.loc22_4.3)
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// CHECK:STDOUT: return
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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