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-rw-r--r--lib/Frontend/PCHReader.cpp125
1 files changed, 120 insertions, 5 deletions
diff --git a/lib/Frontend/PCHReader.cpp b/lib/Frontend/PCHReader.cpp
index 36cddd32e5..7d8fee94f0 100644
--- a/lib/Frontend/PCHReader.cpp
+++ b/lib/Frontend/PCHReader.cpp
@@ -21,6 +21,7 @@
#include "clang/AST/Type.h"
#include "clang/AST/TypeLocVisitor.h"
#include "clang/Lex/MacroInfo.h"
+#include "clang/Lex/PreprocessingRecord.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Lex/HeaderSearch.h"
#include "clang/Basic/OnDiskHashTable.h"
@@ -326,8 +327,9 @@ PCHReader::PCHReader(Preprocessor &PP, ASTContext *Context,
IdentifierOffsets(0),
MethodPoolLookupTable(0), MethodPoolLookupTableData(0),
TotalSelectorsInMethodPool(0), SelectorOffsets(0),
- TotalNumSelectors(0), Comments(0), NumComments(0), isysroot(isysroot),
- NumStatHits(0), NumStatMisses(0),
+ TotalNumSelectors(0), MacroDefinitionOffsets(0),
+ NumPreallocatedPreprocessingEntities(0), Comments(0), NumComments(0),
+ isysroot(isysroot), NumStatHits(0), NumStatMisses(0),
NumSLocEntriesRead(0), NumStatementsRead(0),
NumMacrosRead(0), NumMethodPoolSelectorsRead(0), NumMethodPoolMisses(0),
NumLexicalDeclContextsRead(0), NumVisibleDeclContextsRead(0),
@@ -343,8 +345,9 @@ PCHReader::PCHReader(SourceManager &SourceMgr, FileManager &FileMgr,
IdentifierOffsets(0),
MethodPoolLookupTable(0), MethodPoolLookupTableData(0),
TotalSelectorsInMethodPool(0), SelectorOffsets(0),
- TotalNumSelectors(0), Comments(0), NumComments(0), isysroot(isysroot),
- NumStatHits(0), NumStatMisses(0),
+ TotalNumSelectors(0), MacroDefinitionOffsets(0),
+ NumPreallocatedPreprocessingEntities(0), Comments(0), NumComments(0),
+ isysroot(isysroot), NumStatHits(0), NumStatMisses(0),
NumSLocEntriesRead(0), NumStatementsRead(0),
NumMacrosRead(0), NumMethodPoolSelectorsRead(0), NumMethodPoolMisses(0),
NumLexicalDeclContextsRead(0), NumVisibleDeclContextsRead(0),
@@ -1047,12 +1050,14 @@ void PCHReader::ReadMacroRecord(uint64_t Offset) {
MacroInfo *MI = PP->AllocateMacroInfo(Loc);
MI->setIsUsed(isUsed);
+ unsigned NextIndex = 3;
if (RecType == pch::PP_MACRO_FUNCTION_LIKE) {
// Decode function-like macro info.
bool isC99VarArgs = Record[3];
bool isGNUVarArgs = Record[4];
MacroArgs.clear();
unsigned NumArgs = Record[5];
+ NextIndex = 6 + NumArgs;
for (unsigned i = 0; i != NumArgs; ++i)
MacroArgs.push_back(DecodeIdentifierInfo(Record[6+i]));
@@ -1070,6 +1075,13 @@ void PCHReader::ReadMacroRecord(uint64_t Offset) {
// Remember that we saw this macro last so that we add the tokens that
// form its body to it.
Macro = MI;
+
+ if (NextIndex + 1 == Record.size() && PP->getPreprocessingRecord()) {
+ // We have a macro definition. Load it now.
+ PP->getPreprocessingRecord()->RegisterMacroDefinition(Macro,
+ getMacroDefinition(Record[NextIndex]));
+ }
+
++NumMacrosRead;
break;
}
@@ -1090,6 +1102,64 @@ void PCHReader::ReadMacroRecord(uint64_t Offset) {
Macro->AddTokenToBody(Tok);
break;
}
+
+ case pch::PP_MACRO_INSTANTIATION: {
+ // If we already have a macro, that means that we've hit the end
+ // of the definition of the macro we were looking for. We're
+ // done.
+ if (Macro)
+ return;
+
+ if (!PP->getPreprocessingRecord()) {
+ Error("missing preprocessing record in PCH file");
+ return;
+ }
+
+ PreprocessingRecord &PPRec = *PP->getPreprocessingRecord();
+ if (PPRec.getPreprocessedEntity(Record[0]))
+ return;
+
+ MacroInstantiation *MI
+ = new (PPRec) MacroInstantiation(DecodeIdentifierInfo(Record[3]),
+ SourceRange(
+ SourceLocation::getFromRawEncoding(Record[1]),
+ SourceLocation::getFromRawEncoding(Record[2])),
+ getMacroDefinition(Record[4]));
+ PPRec.SetPreallocatedEntity(Record[0], MI);
+ return;
+ }
+
+ case pch::PP_MACRO_DEFINITION: {
+ // If we already have a macro, that means that we've hit the end
+ // of the definition of the macro we were looking for. We're
+ // done.
+ if (Macro)
+ return;
+
+ if (!PP->getPreprocessingRecord()) {
+ Error("missing preprocessing record in PCH file");
+ return;
+ }
+
+ PreprocessingRecord &PPRec = *PP->getPreprocessingRecord();
+ if (PPRec.getPreprocessedEntity(Record[0]))
+ return;
+
+ if (Record[1] >= MacroDefinitionsLoaded.size()) {
+ Error("out-of-bounds macro definition record");
+ return;
+ }
+
+ MacroDefinition *MD
+ = new (PPRec) MacroDefinition(DecodeIdentifierInfo(Record[4]),
+ SourceLocation::getFromRawEncoding(Record[5]),
+ SourceRange(
+ SourceLocation::getFromRawEncoding(Record[2]),
+ SourceLocation::getFromRawEncoding(Record[3])));
+ PPRec.SetPreallocatedEntity(Record[0], MD);
+ MacroDefinitionsLoaded[Record[1]] = MD;
+ return;
+ }
}
}
}
@@ -1139,16 +1209,32 @@ void PCHReader::ReadDefinedMacros() {
case pch::PP_MACRO_OBJECT_LIKE:
case pch::PP_MACRO_FUNCTION_LIKE:
- DecodeIdentifierInfo(Record[0]);
+ DecodeIdentifierInfo(Record[0]);
break;
case pch::PP_TOKEN:
// Ignore tokens.
break;
+
+ case pch::PP_MACRO_INSTANTIATION:
+ case pch::PP_MACRO_DEFINITION:
+ // Read the macro record.
+ ReadMacroRecord(Cursor.GetCurrentBitNo());
+ break;
}
}
}
+MacroDefinition *PCHReader::getMacroDefinition(pch::IdentID ID) {
+ if (ID == 0 || ID >= MacroDefinitionsLoaded.size())
+ return 0;
+
+ if (!MacroDefinitionsLoaded[ID])
+ ReadMacroRecord(MacroDefinitionOffsets[ID]);
+
+ return MacroDefinitionsLoaded[ID];
+}
+
/// \brief If we are loading a relocatable PCH file, and the filename is
/// not an absolute path, add the system root to the beginning of the file
/// name.
@@ -1431,6 +1517,19 @@ PCHReader::ReadPCHBlock() {
}
break;
}
+
+ case pch::MACRO_DEFINITION_OFFSETS:
+ MacroDefinitionOffsets = (const uint32_t *)BlobStart;
+ if (PP) {
+ if (!PP->getPreprocessingRecord())
+ PP->createPreprocessingRecord();
+ PP->getPreprocessingRecord()->SetExternalSource(*this, Record[0]);
+ } else {
+ NumPreallocatedPreprocessingEntities = Record[0];
+ }
+
+ MacroDefinitionsLoaded.resize(Record[1]);
+ break;
}
}
Error("premature end of bitstream in PCH file");
@@ -1562,6 +1661,18 @@ PCHReader::PCHReadResult PCHReader::ReadPCH(const std::string &FileName) {
return Success;
}
+void PCHReader::setPreprocessor(Preprocessor &pp) {
+ PP = &pp;
+
+ if (NumPreallocatedPreprocessingEntities) {
+ if (!PP->getPreprocessingRecord())
+ PP->createPreprocessingRecord();
+ PP->getPreprocessingRecord()->SetExternalSource(*this,
+ NumPreallocatedPreprocessingEntities);
+ NumPreallocatedPreprocessingEntities = 0;
+ }
+}
+
void PCHReader::InitializeContext(ASTContext &Ctx) {
Context = &Ctx;
assert(Context && "Passed null context!");
@@ -1823,6 +1934,10 @@ bool PCHReader::ParseLanguageOptions(
return false;
}
+void PCHReader::ReadPreprocessedEntities() {
+ ReadDefinedMacros();
+}
+
void PCHReader::ReadComments(std::vector<SourceRange> &Comments) {
Comments.resize(NumComments);
std::copy(this->Comments, this->Comments + NumComments,
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-07-17 07:46:23 +0000