mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-30 22:02:41 +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.
71 lines
4.4 KiB
Plaintext
71 lines
4.4 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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var a: (i32, i32, i32) = (1, 2, 3);
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var b: [i32; 3] = a;
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// CHECK:STDOUT: --- assign_var.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %.1: type = tuple_type (type, type, type) [template]
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// CHECK:STDOUT: %.2: type = tuple_type (i32, i32, i32) [template]
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// CHECK:STDOUT: %.3: type = ptr_type (i32, i32, i32) [template]
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// CHECK:STDOUT: %.4: i32 = int_literal 1 [template]
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// CHECK:STDOUT: %.5: i32 = int_literal 2 [template]
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// CHECK:STDOUT: %.6: i32 = int_literal 3 [template]
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// CHECK:STDOUT: %.7: (i32, i32, i32) = tuple_value (%.4, %.5, %.6) [template]
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// CHECK:STDOUT: %.8: type = array_type %.6, i32 [template]
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// CHECK:STDOUT: %.9: type = ptr_type [i32; 3] [template]
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// CHECK:STDOUT: %.10: i32 = int_literal 0 [template]
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// CHECK:STDOUT: %.11: i32 = int_literal 1 [template]
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// CHECK:STDOUT: %.12: i32 = int_literal 2 [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 {.a = %a, .b = %b} [template]
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// CHECK:STDOUT: %.loc7_22.1: (type, type, type) = tuple_literal (i32, i32, i32)
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// CHECK:STDOUT: %.loc7_22.2: type = converted %.loc7_22.1, constants.%.2 [template = constants.%.2]
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// CHECK:STDOUT: %a.var: ref (i32, i32, i32) = var a
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// CHECK:STDOUT: %a: ref (i32, i32, i32) = bind_name a, %a.var
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// CHECK:STDOUT: %.loc7_27: i32 = int_literal 1 [template = constants.%.4]
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// CHECK:STDOUT: %.loc7_30: i32 = int_literal 2 [template = constants.%.5]
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// CHECK:STDOUT: %.loc7_33: i32 = int_literal 3 [template = constants.%.6]
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// CHECK:STDOUT: %.loc7_34.1: (i32, i32, i32) = tuple_literal (%.loc7_27, %.loc7_30, %.loc7_33)
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// CHECK:STDOUT: %.loc7_34.2: ref i32 = tuple_access %a.var, element0
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// CHECK:STDOUT: %.loc7_34.3: init i32 = initialize_from %.loc7_27 to %.loc7_34.2 [template = constants.%.4]
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// CHECK:STDOUT: %.loc7_34.4: ref i32 = tuple_access %a.var, element1
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// CHECK:STDOUT: %.loc7_34.5: init i32 = initialize_from %.loc7_30 to %.loc7_34.4 [template = constants.%.5]
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// CHECK:STDOUT: %.loc7_34.6: ref i32 = tuple_access %a.var, element2
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// CHECK:STDOUT: %.loc7_34.7: init i32 = initialize_from %.loc7_33 to %.loc7_34.6 [template = constants.%.6]
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// CHECK:STDOUT: %.loc7_34.8: init (i32, i32, i32) = tuple_init (%.loc7_34.3, %.loc7_34.5, %.loc7_34.7) to %a.var [template = constants.%.7]
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// CHECK:STDOUT: %.loc7_34.9: init (i32, i32, i32) = converted %.loc7_34.1, %.loc7_34.8 [template = constants.%.7]
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// CHECK:STDOUT: assign %a.var, %.loc7_34.9
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// CHECK:STDOUT: %.loc8_14: i32 = int_literal 3 [template = constants.%.6]
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// CHECK:STDOUT: %.loc8_15: type = array_type %.loc8_14, i32 [template = constants.%.8]
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// CHECK:STDOUT: %b.var: ref [i32; 3] = var b
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// CHECK:STDOUT: %b: ref [i32; 3] = bind_name b, %b.var
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// CHECK:STDOUT: %a.ref: ref (i32, i32, i32) = name_ref a, %a
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// CHECK:STDOUT: %.loc8_19.1: ref i32 = tuple_access %a.ref, element0
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// CHECK:STDOUT: %.loc8_19.2: i32 = bind_value %.loc8_19.1
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// CHECK:STDOUT: %.loc8_19.3: i32 = int_literal 0 [template = constants.%.10]
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// CHECK:STDOUT: %.loc8_19.4: ref i32 = array_index %b.var, %.loc8_19.3
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// CHECK:STDOUT: %.loc8_19.5: init i32 = initialize_from %.loc8_19.2 to %.loc8_19.4
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// CHECK:STDOUT: %.loc8_19.6: ref i32 = tuple_access %a.ref, element1
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// CHECK:STDOUT: %.loc8_19.7: i32 = bind_value %.loc8_19.6
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// CHECK:STDOUT: %.loc8_19.8: i32 = int_literal 1 [template = constants.%.11]
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// CHECK:STDOUT: %.loc8_19.9: ref i32 = array_index %b.var, %.loc8_19.8
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// CHECK:STDOUT: %.loc8_19.10: init i32 = initialize_from %.loc8_19.7 to %.loc8_19.9
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// CHECK:STDOUT: %.loc8_19.11: ref i32 = tuple_access %a.ref, element2
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// CHECK:STDOUT: %.loc8_19.12: i32 = bind_value %.loc8_19.11
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// CHECK:STDOUT: %.loc8_19.13: i32 = int_literal 2 [template = constants.%.12]
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// CHECK:STDOUT: %.loc8_19.14: ref i32 = array_index %b.var, %.loc8_19.13
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// CHECK:STDOUT: %.loc8_19.15: init i32 = initialize_from %.loc8_19.12 to %.loc8_19.14
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// CHECK:STDOUT: %.loc8_19.16: init [i32; 3] = array_init (%.loc8_19.5, %.loc8_19.10, %.loc8_19.15) to %b.var
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// CHECK:STDOUT: %.loc8_19.17: init [i32; 3] = converted %a.ref, %.loc8_19.16
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// CHECK:STDOUT: assign %b.var, %.loc8_19.17
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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