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https://github.com/carbon-language/carbon-lang.git
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Richard Smith
9a5f2d734b
Instead of including the raw index of the specific, which is unstable across files and across unrelated changes, use a fingerprint of the constant values of the specific arguments. This is a placeholder until we decide on how we want to mangle specific functions.
62 lines
2.2 KiB
C++
62 lines
2.2 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_LOWER_MANGLER_H_
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#define CARBON_TOOLCHAIN_LOWER_MANGLER_H_
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#include <string>
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#include "toolchain/lower/file_context.h"
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#include "toolchain/sem_ir/constant.h"
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#include "toolchain/sem_ir/ids.h"
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#include "toolchain/sem_ir/inst_fingerprinter.h"
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namespace Carbon::Lower {
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// A class for producing mangled (deterministically unique, at least partially
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// human readable) names for externally referenceable entities such as
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// functions.
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class Mangler {
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public:
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// Initialize a new Mangler instance for mangling entities within the
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// specified `FileContext`.
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explicit Mangler(FileContext& file_context) : file_context_(file_context) {}
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// Produce a deterministically unique mangled name for the function specified
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// by `function_id` and `specific_id`.
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auto Mangle(SemIR::FunctionId function_id, SemIR::SpecificId specific_id)
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-> std::string;
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private:
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// Mangle this qualified name with inner scope first, working outwards. This
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// may reduce the incidence of common prefixes in the name mangling. (i.e.:
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// every standard library name won't have a common prefix that has to be
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// skipped and compared before getting to the interesting part)
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auto MangleInverseQualifiedNameScope(llvm::raw_ostream& os,
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SemIR::NameScopeId name_scope_id)
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-> void;
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auto sem_ir() const -> const SemIR::File& { return file_context_.sem_ir(); }
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auto names() const -> SemIR::NameStoreWrapper { return sem_ir().names(); }
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auto insts() const -> const SemIR::InstStore& { return sem_ir().insts(); }
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auto types() const -> const SemIR::TypeStore& { return sem_ir().types(); }
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auto constant_values() const -> const SemIR::ConstantValueStore& {
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return sem_ir().constant_values();
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}
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FileContext& file_context_;
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// TODO: If `file_context_` has an `InstNamer`, we could share its
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// fingerprinter.
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SemIR::InstFingerprinter fingerprinter_;
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};
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} // namespace Carbon::Lower
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#endif // CARBON_TOOLCHAIN_LOWER_MANGLER_H_
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