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https://github.com/carbon-language/carbon-lang.git
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Richard Smith
07efa026de
Add a mechanism to define instruction categories, to support inspecting the common representation of similar kinds of instruction. Use that mechanism to make formatting of branch instructions slightly more type-safe. The idea here is to use the existing `Inst` mechanism for converting to and from structs, extended to operate on a struct representing multiple different kinds of instruction. In this case, the concrete kind of instruction is stored in the struct in a `kind` field, rather than being implied by the type. Factored out of #3555 where this mechanism is used to provide a common interface for runtime and symbolic name bindings.
38 lines
1.1 KiB
C++
38 lines
1.1 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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#include "toolchain/sem_ir/inst.h"
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namespace Carbon::SemIR {
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auto Inst::Print(llvm::raw_ostream& out) const -> void {
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out << "{kind: " << kind_;
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auto print_args = [&](auto info) {
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using Info = decltype(info);
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if constexpr (Info::NumArgs > 0) {
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out << ", arg0: " << FromRaw<typename Info::template ArgType<0>>(arg0_);
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}
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if constexpr (Info::NumArgs > 1) {
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out << ", arg1: " << FromRaw<typename Info::template ArgType<1>>(arg1_);
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}
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};
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// clang warns on unhandled enum values; clang-tidy is incorrect here.
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// NOLINTNEXTLINE(bugprone-switch-missing-default-case)
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switch (kind_) {
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#define CARBON_SEM_IR_INST_KIND(Name) \
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case Name::Kind: \
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print_args(InstLikeTypeInfo<Name>()); \
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break;
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#include "toolchain/sem_ir/inst_kind.def"
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}
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if (type_id_.is_valid()) {
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out << ", type: " << type_id_;
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}
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out << "}";
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}
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} // namespace Carbon::SemIR
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