mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-01 22:02:45 +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.
67 lines
3.5 KiB
Plaintext
67 lines
3.5 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; 2] = (12, 24);
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var b: i32 = 1;
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var c: i32 = a[0];
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var d: i32 = a[b];
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// CHECK:STDOUT: --- array_element_access.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %.1: i32 = int_literal 2 [template]
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// CHECK:STDOUT: %.2: type = array_type %.1, i32 [template]
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// CHECK:STDOUT: %.3: type = ptr_type [i32; 2] [template]
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// CHECK:STDOUT: %.4: i32 = int_literal 12 [template]
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// CHECK:STDOUT: %.5: i32 = int_literal 24 [template]
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// CHECK:STDOUT: %.6: type = tuple_type (i32, i32) [template]
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// CHECK:STDOUT: %.7: i32 = int_literal 0 [template]
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// CHECK:STDOUT: %.8: i32 = int_literal 1 [template]
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// CHECK:STDOUT: %.9: [i32; 2] = tuple_value (%.4, %.5) [template]
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// CHECK:STDOUT: %.10: i32 = int_literal 1 [template]
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// CHECK:STDOUT: %.11: i32 = int_literal 0 [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, .c = %c, .d = %d} [template]
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// CHECK:STDOUT: %.loc7_14: i32 = int_literal 2 [template = constants.%.1]
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// CHECK:STDOUT: %.loc7_15: type = array_type %.loc7_14, i32 [template = constants.%.2]
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// CHECK:STDOUT: %a.var: ref [i32; 2] = var a
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// CHECK:STDOUT: %a: ref [i32; 2] = bind_name a, %a.var
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// CHECK:STDOUT: %.loc7_20: i32 = int_literal 12 [template = constants.%.4]
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// CHECK:STDOUT: %.loc7_24: i32 = int_literal 24 [template = constants.%.5]
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// CHECK:STDOUT: %.loc7_26.1: (i32, i32) = tuple_literal (%.loc7_20, %.loc7_24)
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// CHECK:STDOUT: %.loc7_26.2: i32 = int_literal 0 [template = constants.%.7]
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// CHECK:STDOUT: %.loc7_26.3: ref i32 = array_index %a.var, %.loc7_26.2
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// CHECK:STDOUT: %.loc7_26.4: init i32 = initialize_from %.loc7_20 to %.loc7_26.3 [template = constants.%.4]
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// CHECK:STDOUT: %.loc7_26.5: i32 = int_literal 1 [template = constants.%.8]
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// CHECK:STDOUT: %.loc7_26.6: ref i32 = array_index %a.var, %.loc7_26.5
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// CHECK:STDOUT: %.loc7_26.7: init i32 = initialize_from %.loc7_24 to %.loc7_26.6 [template = constants.%.5]
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// CHECK:STDOUT: %.loc7_26.8: init [i32; 2] = array_init (%.loc7_26.4, %.loc7_26.7) to %a.var [template = constants.%.9]
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// CHECK:STDOUT: %.loc7_26.9: init [i32; 2] = converted %.loc7_26.1, %.loc7_26.8 [template = constants.%.9]
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// CHECK:STDOUT: assign %a.var, %.loc7_26.9
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// CHECK:STDOUT: %b.var: ref i32 = var b
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// CHECK:STDOUT: %b: ref i32 = bind_name b, %b.var
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// CHECK:STDOUT: %.loc8: i32 = int_literal 1 [template = constants.%.10]
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// CHECK:STDOUT: assign %b.var, %.loc8
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// CHECK:STDOUT: %c.var: ref i32 = var c
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// CHECK:STDOUT: %c: ref i32 = bind_name c, %c.var
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// CHECK:STDOUT: %a.ref.loc9: ref [i32; 2] = name_ref a, %a
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// CHECK:STDOUT: %.loc9_16: i32 = int_literal 0 [template = constants.%.11]
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// CHECK:STDOUT: %.loc9_17.1: ref i32 = array_index %a.ref.loc9, %.loc9_16
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// CHECK:STDOUT: %.loc9_17.2: i32 = bind_value %.loc9_17.1
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// CHECK:STDOUT: assign %c.var, %.loc9_17.2
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// CHECK:STDOUT: %d.var: ref i32 = var d
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// CHECK:STDOUT: %d: ref i32 = bind_name d, %d.var
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// CHECK:STDOUT: %a.ref.loc10: ref [i32; 2] = name_ref a, %a
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// CHECK:STDOUT: %b.ref: ref i32 = name_ref b, %b
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// CHECK:STDOUT: %.loc10_16: i32 = bind_value %b.ref
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// CHECK:STDOUT: %.loc10_17.1: ref i32 = array_index %a.ref.loc10, %.loc10_16
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// CHECK:STDOUT: %.loc10_17.2: i32 = bind_value %.loc10_17.1
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// CHECK:STDOUT: assign %d.var, %.loc10_17.2
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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