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https://github.com/carbon-language/carbon-lang.git
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Richard Smith
5b884ae14d
- Track the `VarPattern` instruction on the `VarStorage` instruction so that it's available for name mangling. - Mangle global variables based on the first binding name within their pattern. - Give global variables external rather than internal linkage, except if they have no bindings whatsoever in their pattern. - To support lowering references to bindings nested within a global var, such as for `var (x: i32, b: i32)`, add some basic initial support for reference constant expressions. Treat a global `var` as a reference constant, and treat an aggregate access into a reference constant as a reference constant.
36 lines
1.4 KiB
C++
36 lines
1.4 KiB
C++
// 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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#ifndef CARBON_TOOLCHAIN_SEM_IR_PATTERN_H_
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#define CARBON_TOOLCHAIN_SEM_IR_PATTERN_H_
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#include "toolchain/sem_ir/file.h"
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#include "toolchain/sem_ir/ids.h"
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namespace Carbon::SemIR {
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// Returns true if `pattern_id` is a `self` parameter pattern, such as
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// `self: Foo` or `addr self: Self*`.
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auto IsSelfPattern(const File& sem_ir, InstId pattern_id) -> bool;
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// If `pattern_id` introduces any name bindings, this returns the `EntityNameId`
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// of the lexically-first such binding. Otherwise, returns `None`.
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auto GetFirstBindingNameFromPatternId(const File& sem_ir, InstId pattern_id)
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-> EntityNameId;
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// If `pattern_id` is a declaration of a single name, this returns that name,
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// and otherwise returns `None`. This tries to "see through" wrappers like
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// `AddrPattern` and `*ParamPattern`, so this may return the same name for
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// different insts if one is an ancestor of the other (or if they represent
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// separate declarations of the same name).
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//
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// This should only be used for decorative purposes such as SemIR
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// pretty-printing or LLVM parameter naming.
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auto GetPrettyNameFromPatternId(const File& sem_ir, InstId pattern_id)
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-> NameId;
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} // namespace Carbon::SemIR
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#endif // CARBON_TOOLCHAIN_SEM_IR_PATTERN_H_
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