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Diffstat (limited to 'lib/Bitcode/Writer/BitcodeWriter.cpp')
-rw-r--r--lib/Bitcode/Writer/BitcodeWriter.cpp64
1 files changed, 45 insertions, 19 deletions
diff --git a/lib/Bitcode/Writer/BitcodeWriter.cpp b/lib/Bitcode/Writer/BitcodeWriter.cpp
index b2b1ea6de374c..0e518d2bbc8ff 100644
--- a/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -114,6 +114,8 @@ class ModuleBitcodeWriter : public BitcodeWriterBase {
/// True if a module hash record should be written.
bool GenerateHash;
+ SHA1 Hasher;
+
/// If non-null, when GenerateHash is true, the resulting hash is written
/// into ModHash. When GenerateHash is false, that specified value
/// is used as the hash instead of computing from the generated bitcode.
@@ -176,6 +178,8 @@ public:
private:
uint64_t bitcodeStartBit() { return BitcodeStartBit; }
+ size_t addToStrtab(StringRef Str);
+
void writeAttributeGroupTable();
void writeAttributeTable();
void writeTypeTable();
@@ -262,6 +266,7 @@ private:
const GlobalObject &GO);
void writeModuleMetadataKinds();
void writeOperandBundleTags();
+ void writeSyncScopeNames();
void writeConstants(unsigned FirstVal, unsigned LastVal, bool isGlobal);
void writeModuleConstants();
bool pushValueAndType(const Value *V, unsigned InstID,
@@ -312,6 +317,10 @@ private:
return VE.getValueID(VI.getValue());
}
std::map<GlobalValue::GUID, unsigned> &valueIds() { return GUIDToValueIdMap; }
+
+ unsigned getEncodedSyncScopeID(SyncScope::ID SSID) {
+ return unsigned(SSID);
+ }
};
/// Class to manage the bitcode writing for a combined index.
@@ -481,14 +490,6 @@ static unsigned getEncodedOrdering(AtomicOrdering Ordering) {
llvm_unreachable("Invalid ordering");
}
-static unsigned getEncodedSynchScope(SynchronizationScope SynchScope) {
- switch (SynchScope) {
- case SingleThread: return bitc::SYNCHSCOPE_SINGLETHREAD;
- case CrossThread: return bitc::SYNCHSCOPE_CROSSTHREAD;
- }
- llvm_unreachable("Invalid synch scope");
-}
-
static void writeStringRecord(BitstreamWriter &Stream, unsigned Code,
StringRef Str, unsigned AbbrevToUse) {
SmallVector<unsigned, 64> Vals;
@@ -947,11 +948,17 @@ static unsigned getEncodedUnnamedAddr(const GlobalValue &GV) {
llvm_unreachable("Invalid unnamed_addr");
}
+size_t ModuleBitcodeWriter::addToStrtab(StringRef Str) {
+ if (GenerateHash)
+ Hasher.update(Str);
+ return StrtabBuilder.add(Str);
+}
+
void ModuleBitcodeWriter::writeComdats() {
SmallVector<unsigned, 64> Vals;
for (const Comdat *C : VE.getComdats()) {
// COMDAT: [strtab offset, strtab size, selection_kind]
- Vals.push_back(StrtabBuilder.add(C->getName()));
+ Vals.push_back(addToStrtab(C->getName()));
Vals.push_back(C->getName().size());
Vals.push_back(getEncodedComdatSelectionKind(*C));
Stream.EmitRecord(bitc::MODULE_CODE_COMDAT, Vals, /*AbbrevToUse=*/0);
@@ -1122,7 +1129,7 @@ void ModuleBitcodeWriter::writeModuleInfo() {
// linkage, alignment, section, visibility, threadlocal,
// unnamed_addr, externally_initialized, dllstorageclass,
// comdat, attributes]
- Vals.push_back(StrtabBuilder.add(GV.getName()));
+ Vals.push_back(addToStrtab(GV.getName()));
Vals.push_back(GV.getName().size());
Vals.push_back(VE.getTypeID(GV.getValueType()));
Vals.push_back(GV.getType()->getAddressSpace() << 2 | 2 | GV.isConstant());
@@ -1161,7 +1168,7 @@ void ModuleBitcodeWriter::writeModuleInfo() {
// linkage, paramattrs, alignment, section, visibility, gc,
// unnamed_addr, prologuedata, dllstorageclass, comdat,
// prefixdata, personalityfn]
- Vals.push_back(StrtabBuilder.add(F.getName()));
+ Vals.push_back(addToStrtab(F.getName()));
Vals.push_back(F.getName().size());
Vals.push_back(VE.getTypeID(F.getFunctionType()));
Vals.push_back(F.getCallingConv());
@@ -1191,7 +1198,7 @@ void ModuleBitcodeWriter::writeModuleInfo() {
for (const GlobalAlias &A : M.aliases()) {
// ALIAS: [strtab offset, strtab size, alias type, aliasee val#, linkage,
// visibility, dllstorageclass, threadlocal, unnamed_addr]
- Vals.push_back(StrtabBuilder.add(A.getName()));
+ Vals.push_back(addToStrtab(A.getName()));
Vals.push_back(A.getName().size());
Vals.push_back(VE.getTypeID(A.getValueType()));
Vals.push_back(A.getType()->getAddressSpace());
@@ -1210,7 +1217,7 @@ void ModuleBitcodeWriter::writeModuleInfo() {
for (const GlobalIFunc &I : M.ifuncs()) {
// IFUNC: [strtab offset, strtab size, ifunc type, address space, resolver
// val#, linkage, visibility]
- Vals.push_back(StrtabBuilder.add(I.getName()));
+ Vals.push_back(addToStrtab(I.getName()));
Vals.push_back(I.getName().size());
Vals.push_back(VE.getTypeID(I.getValueType()));
Vals.push_back(I.getType()->getAddressSpace());
@@ -2032,6 +2039,24 @@ void ModuleBitcodeWriter::writeOperandBundleTags() {
Stream.ExitBlock();
}
+void ModuleBitcodeWriter::writeSyncScopeNames() {
+ SmallVector<StringRef, 8> SSNs;
+ M.getContext().getSyncScopeNames(SSNs);
+ if (SSNs.empty())
+ return;
+
+ Stream.EnterSubblock(bitc::SYNC_SCOPE_NAMES_BLOCK_ID, 2);
+
+ SmallVector<uint64_t, 64> Record;
+ for (auto SSN : SSNs) {
+ Record.append(SSN.begin(), SSN.end());
+ Stream.EmitRecord(bitc::SYNC_SCOPE_NAME, Record, 0);
+ Record.clear();
+ }
+
+ Stream.ExitBlock();
+}
+
static void emitSignedInt64(SmallVectorImpl<uint64_t> &Vals, uint64_t V) {
if ((int64_t)V >= 0)
Vals.push_back(V << 1);
@@ -2648,7 +2673,7 @@ void ModuleBitcodeWriter::writeInstruction(const Instruction &I,
Vals.push_back(cast<LoadInst>(I).isVolatile());
if (cast<LoadInst>(I).isAtomic()) {
Vals.push_back(getEncodedOrdering(cast<LoadInst>(I).getOrdering()));
- Vals.push_back(getEncodedSynchScope(cast<LoadInst>(I).getSynchScope()));
+ Vals.push_back(getEncodedSyncScopeID(cast<LoadInst>(I).getSyncScopeID()));
}
break;
case Instruction::Store:
@@ -2662,7 +2687,8 @@ void ModuleBitcodeWriter::writeInstruction(const Instruction &I,
Vals.push_back(cast<StoreInst>(I).isVolatile());
if (cast<StoreInst>(I).isAtomic()) {
Vals.push_back(getEncodedOrdering(cast<StoreInst>(I).getOrdering()));
- Vals.push_back(getEncodedSynchScope(cast<StoreInst>(I).getSynchScope()));
+ Vals.push_back(
+ getEncodedSyncScopeID(cast<StoreInst>(I).getSyncScopeID()));
}
break;
case Instruction::AtomicCmpXchg:
@@ -2674,7 +2700,7 @@ void ModuleBitcodeWriter::writeInstruction(const Instruction &I,
Vals.push_back(
getEncodedOrdering(cast<AtomicCmpXchgInst>(I).getSuccessOrdering()));
Vals.push_back(
- getEncodedSynchScope(cast<AtomicCmpXchgInst>(I).getSynchScope()));
+ getEncodedSyncScopeID(cast<AtomicCmpXchgInst>(I).getSyncScopeID()));
Vals.push_back(
getEncodedOrdering(cast<AtomicCmpXchgInst>(I).getFailureOrdering()));
Vals.push_back(cast<AtomicCmpXchgInst>(I).isWeak());
@@ -2688,12 +2714,12 @@ void ModuleBitcodeWriter::writeInstruction(const Instruction &I,
Vals.push_back(cast<AtomicRMWInst>(I).isVolatile());
Vals.push_back(getEncodedOrdering(cast<AtomicRMWInst>(I).getOrdering()));
Vals.push_back(
- getEncodedSynchScope(cast<AtomicRMWInst>(I).getSynchScope()));
+ getEncodedSyncScopeID(cast<AtomicRMWInst>(I).getSyncScopeID()));
break;
case Instruction::Fence:
Code = bitc::FUNC_CODE_INST_FENCE;
Vals.push_back(getEncodedOrdering(cast<FenceInst>(I).getOrdering()));
- Vals.push_back(getEncodedSynchScope(cast<FenceInst>(I).getSynchScope()));
+ Vals.push_back(getEncodedSyncScopeID(cast<FenceInst>(I).getSyncScopeID()));
break;
case Instruction::Call: {
const CallInst &CI = cast<CallInst>(I);
@@ -3648,7 +3674,6 @@ void ModuleBitcodeWriter::writeModuleHash(size_t BlockStartPos) {
// Emit the module's hash.
// MODULE_CODE_HASH: [5*i32]
if (GenerateHash) {
- SHA1 Hasher;
uint32_t Vals[5];
Hasher.update(ArrayRef<uint8_t>((const uint8_t *)&(Buffer)[BlockStartPos],
Buffer.size() - BlockStartPos));
@@ -3707,6 +3732,7 @@ void ModuleBitcodeWriter::write() {
writeUseListBlock(nullptr);
writeOperandBundleTags();
+ writeSyncScopeNames();
// Emit function bodies.
DenseMap<const Function *, uint64_t> FunctionToBitcodeIndex;
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-23 23:10:52 +0000