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a23631f360
Previously we walked the global variables defined by the current file and emitted an LLVM global variable definition for each of them. Now instead, when emitting a constant reference to a global variable, we emit an LLVM global variable declaration, and we then subsequently walk the global variables defined by the current file and convert each of them from a declaration to a definition. In order to make import of names of global variables work, add support for import of `var`, as well as support for importing `tuple_access` and `tuple_pattern` in the case where the `var` has a tuple pattern in its declaration. Also treat `bind_name`s that are reference bindings to `var`s as having the same constant reference value as their `var` so that we can properly import and lower them. --------- Co-authored-by: Jon Ross-Perkins <jperkins@google.com> Co-authored-by: Carbon Infra Bot <carbon-external-infra@google.com>
59 lines
2.8 KiB
Plaintext
59 lines
2.8 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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// 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/struct/fail_assign_to_empty.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/struct/fail_assign_to_empty.carbon
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// CHECK:STDERR: fail_assign_to_empty.carbon:[[@LINE+4]]:13: error: cannot initialize struct with 0 fields from struct with 1 field [StructInitElementCountMismatch]
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// CHECK:STDERR: var x: {} = {.a = 1};
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// CHECK:STDERR: ^~~~~~~~
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// CHECK:STDERR:
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var x: {} = {.a = 1};
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// CHECK:STDOUT: --- fail_assign_to_empty.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
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// CHECK:STDOUT: %pattern_type: type = pattern_type %empty_struct_type [concrete]
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// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [concrete]
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// CHECK:STDOUT: %struct_type.a: type = struct_type {.a: Core.IntLiteral} [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: %Core: <namespace> = namespace file.%Core.import, [concrete] {
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// CHECK:STDOUT: import Core//prelude
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// CHECK:STDOUT: import Core//prelude/...
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// CHECK:STDOUT: }
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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 [concrete] {
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// CHECK:STDOUT: .Core = imports.%Core
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// CHECK:STDOUT: .x = %x
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Core.import = import Core
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// CHECK:STDOUT: name_binding_decl {
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// CHECK:STDOUT: %x.patt: %pattern_type = binding_pattern x [concrete]
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// CHECK:STDOUT: %x.var_patt: %pattern_type = var_pattern %x.patt [concrete]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %x.var: ref %empty_struct_type = var %x.var_patt [concrete]
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// CHECK:STDOUT: %.loc15_9.1: type = splice_block %.loc15_9.3 [concrete = constants.%empty_struct_type] {
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// CHECK:STDOUT: %.loc15_9.2: %empty_struct_type = struct_literal ()
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// CHECK:STDOUT: %.loc15_9.3: type = converted %.loc15_9.2, constants.%empty_struct_type [concrete = constants.%empty_struct_type]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %x: ref %empty_struct_type = bind_name x, %x.var [concrete = %x.var]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @__global_init() {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [concrete = constants.%int_1]
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// CHECK:STDOUT: %.loc15: %struct_type.a = struct_literal (%int_1)
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// CHECK:STDOUT: assign file.%x.var, <error>
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// CHECK:STDOUT: return
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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