mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-27 20:40:10 +01:00
Richard Smith
842b471e67
This implements initializing expression semantics for structs and tuples, following #2006 and discussions since. Tuple and (and analogously, struct) literals are treated as having a mixed expression category that is later resolved based on how the literal is used, as either a tuple initializer or a tuple value, at which point we create a `TupleInit` or `TupleValue` that represents the formation of the tuple initializer or tuple value from the tuple literal. There's quite a lot of TODOs here, and the SemIR representation is still not quite right, but this seems like a good place to checkpoint some incremental progress.
32 lines
1.1 KiB
Plaintext
32 lines
1.1 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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fn F(a: (), b: (i32,), c: (i32, i32)) {}
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fn Main() {
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F((), (1,), (2, 3));
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}
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// CHECK:STDOUT: ; ModuleID = 'tuple_param.carbon'
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// CHECK:STDOUT: source_filename = "tuple_param.carbon"
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// CHECK:STDOUT:
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// CHECK:STDOUT: define void @F({ i32 } %b, ptr %c) {
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// CHECK:STDOUT: ret void
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: define void @Main() {
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// CHECK:STDOUT: %tuple = alloca { i32, i32 }, align 8
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// CHECK:STDOUT: %1 = getelementptr inbounds { i32, i32 }, ptr %tuple, i32 0, i32 0
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// CHECK:STDOUT: store i32 2, ptr %1, align 4
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// CHECK:STDOUT: %2 = getelementptr inbounds { i32, i32 }, ptr %tuple, i32 0, i32 1
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// CHECK:STDOUT: store i32 3, ptr %2, align 4
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// CHECK:STDOUT: call void @F({ i32 } { i32 1 }, ptr %tuple)
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// CHECK:STDOUT: ret void
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; uselistorder directives
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// CHECK:STDOUT: uselistorder i32 1, { 2, 0, 1 }
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