| 1 | //===- RemarkStringTable.cpp ----------------------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | // |
| 9 | // Implementation of the Remark string table used at remark generation. |
| 10 | // |
| 11 | //===----------------------------------------------------------------------===// |
| 12 | |
| 13 | #include "llvm/Remarks/RemarkStringTable.h" |
| 14 | #include "llvm/ADT/StringRef.h" |
| 15 | #include "llvm/Remarks/Remark.h" |
| 16 | #include "llvm/Remarks/RemarkParser.h" |
| 17 | #include "llvm/Support/raw_ostream.h" |
| 18 | #include <vector> |
| 19 | |
| 20 | using namespace llvm; |
| 21 | using namespace llvm::remarks; |
| 22 | |
| 23 | StringTable::StringTable(const ParsedStringTable &Other) { |
| 24 | for (unsigned i = 0, e = Other.size(); i < e; ++i) |
| 25 | if (Expected<StringRef> MaybeStr = Other[i]) |
| 26 | add(Str: *MaybeStr); |
| 27 | else |
| 28 | llvm_unreachable("Unexpected error while building remarks string table."); |
| 29 | } |
| 30 | |
| 31 | std::pair<unsigned, StringRef> StringTable::add(StringRef Str) { |
| 32 | size_t NextID = StrTab.size(); |
| 33 | auto KV = StrTab.insert(KV: {Str, NextID}); |
| 34 | // If it's a new string, add it to the final size. |
| 35 | if (KV.second) |
| 36 | SerializedSize += KV.first->first().size() + 1; // +1 for the '\0' |
| 37 | // Can be either NextID or the previous ID if the string is already there. |
| 38 | return {KV.first->second, KV.first->first()}; |
| 39 | } |
| 40 | |
| 41 | void StringTable::internalize(Remark &R) { |
| 42 | auto Impl = [&](StringRef &S) { S = add(Str: S).second; }; |
| 43 | Impl(R.PassName); |
| 44 | Impl(R.RemarkName); |
| 45 | Impl(R.FunctionName); |
| 46 | if (R.Loc) |
| 47 | Impl(R.Loc->SourceFilePath); |
| 48 | for (Argument &Arg : R.Args) { |
| 49 | Impl(Arg.Key); |
| 50 | Impl(Arg.Val); |
| 51 | if (Arg.Loc) |
| 52 | Impl(Arg.Loc->SourceFilePath); |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | void StringTable::serialize(raw_ostream &OS) const { |
| 57 | // Emit the sequence of strings. |
| 58 | for (StringRef Str : serialize()) { |
| 59 | OS << Str; |
| 60 | // Explicitly emit a '\0'. |
| 61 | OS.write(C: '\0'); |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | std::vector<StringRef> StringTable::serialize() const { |
| 66 | std::vector<StringRef> Strings{StrTab.size()}; |
| 67 | for (const auto &KV : StrTab) |
| 68 | Strings[KV.second] = KV.first(); |
| 69 | return Strings; |
| 70 | } |
| 71 |