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move some code around, fix a bug in the reader reading globalinits (which

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I just introduced), stub out function reading, purge aggregate values from
the value table before reading functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36463 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2007-04-26 03:27:58 +00:00
parent eb0107af86
commit 198f34ac35
5 changed files with 123 additions and 69 deletions
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152
lib/Bitcode/Writer/BitcodeWriter.cpp
View File

@@ -324,69 +324,6 @@ static void WriteModuleInfo(const Module *M, const ValueEnumerator &VE,
}
/// WriteTypeSymbolTable - Emit a block for the specified type symtab.
static void WriteTypeSymbolTable(const TypeSymbolTable &TST,
const ValueEnumerator &VE,
BitstreamWriter &Stream) {
if (TST.empty()) return;
Stream.EnterSubblock(bitc::TYPE_SYMTAB_BLOCK_ID, 3);
// FIXME: Set up the abbrev, we know how many types there are!
// FIXME: We know if the type names can use 7-bit ascii.
SmallVector<unsigned, 64> NameVals;
for (TypeSymbolTable::const_iterator TI = TST.begin(), TE = TST.end();
TI != TE; ++TI) {
unsigned AbbrevToUse = 0;
// TST_ENTRY: [typeid, namelen, namechar x N]
NameVals.push_back(VE.getTypeID(TI->second));
const std::string &Str = TI->first;
NameVals.push_back(Str.size());
for (unsigned i = 0, e = Str.size(); i != e; ++i)
NameVals.push_back(Str[i]);
// Emit the finished record.
Stream.EmitRecord(bitc::VST_CODE_ENTRY, NameVals, AbbrevToUse);
NameVals.clear();
}
Stream.ExitBlock();
}
// Emit names for globals/functions etc.
static void WriteValueSymbolTable(const ValueSymbolTable &VST,
const ValueEnumerator &VE,
BitstreamWriter &Stream) {
if (VST.empty()) return;
Stream.EnterSubblock(bitc::VALUE_SYMTAB_BLOCK_ID, 3);
// FIXME: Set up the abbrev, we know how many values there are!
// FIXME: We know if the type names can use 7-bit ascii.
SmallVector<unsigned, 64> NameVals;
for (ValueSymbolTable::const_iterator SI = VST.begin(), SE = VST.end();
SI != SE; ++SI) {
unsigned AbbrevToUse = 0;
// VST_ENTRY: [valueid, namelen, namechar x N]
NameVals.push_back(VE.getValueID(SI->getValue()));
NameVals.push_back(SI->getKeyLength());
for (const char *P = SI->getKeyData(),
*E = SI->getKeyData()+SI->getKeyLength(); P != E; ++P)
NameVals.push_back((unsigned char)*P);
// Emit the finished record.
Stream.EmitRecord(bitc::VST_CODE_ENTRY, NameVals, AbbrevToUse);
NameVals.clear();
}
Stream.ExitBlock();
}
static void WriteConstants(unsigned FirstVal, unsigned LastVal,
const ValueEnumerator &VE,
BitstreamWriter &Stream) {
@@ -541,15 +478,85 @@ static void WriteModuleConstants(const ValueEnumerator &VE,
}
}
static void WriteFunction(const Function &F, ValueEnumerator &VE,
BitstreamWriter &Stream) {
}
/// WriteTypeSymbolTable - Emit a block for the specified type symtab.
static void WriteTypeSymbolTable(const TypeSymbolTable &TST,
const ValueEnumerator &VE,
BitstreamWriter &Stream) {
if (TST.empty()) return;
Stream.EnterSubblock(bitc::TYPE_SYMTAB_BLOCK_ID, 3);
// FIXME: Set up the abbrev, we know how many types there are!
// FIXME: We know if the type names can use 7-bit ascii.
SmallVector<unsigned, 64> NameVals;
for (TypeSymbolTable::const_iterator TI = TST.begin(), TE = TST.end();
TI != TE; ++TI) {
unsigned AbbrevToUse = 0;
// TST_ENTRY: [typeid, namelen, namechar x N]
NameVals.push_back(VE.getTypeID(TI->second));
const std::string &Str = TI->first;
NameVals.push_back(Str.size());
for (unsigned i = 0, e = Str.size(); i != e; ++i)
NameVals.push_back(Str[i]);
// Emit the finished record.
Stream.EmitRecord(bitc::VST_CODE_ENTRY, NameVals, AbbrevToUse);
NameVals.clear();
}
Stream.ExitBlock();
}
// Emit names for globals/functions etc.
static void WriteValueSymbolTable(const ValueSymbolTable &VST,
const ValueEnumerator &VE,
BitstreamWriter &Stream) {
if (VST.empty()) return;
Stream.EnterSubblock(bitc::VALUE_SYMTAB_BLOCK_ID, 3);
// FIXME: Set up the abbrev, we know how many values there are!
// FIXME: We know if the type names can use 7-bit ascii.
SmallVector<unsigned, 64> NameVals;
for (ValueSymbolTable::const_iterator SI = VST.begin(), SE = VST.end();
SI != SE; ++SI) {
unsigned AbbrevToUse = 0;
// VST_ENTRY: [valueid, namelen, namechar x N]
NameVals.push_back(VE.getValueID(SI->getValue()));
NameVals.push_back(SI->getKeyLength());
for (const char *P = SI->getKeyData(),
*E = SI->getKeyData()+SI->getKeyLength(); P != E; ++P)
NameVals.push_back((unsigned char)*P);
// Emit the finished record.
Stream.EmitRecord(bitc::VST_CODE_ENTRY, NameVals, AbbrevToUse);
NameVals.clear();
}
Stream.ExitBlock();
}
/// WriteModule - Emit the specified module to the bitstream.
static void WriteModule(const Module *M, BitstreamWriter &Stream) {
Stream.EnterSubblock(bitc::MODULE_BLOCK_ID, 3);
// Emit the version number if it is non-zero.
if (CurVersion) {
SmallVector<unsigned, 1> VersionVals;
VersionVals.push_back(CurVersion);
Stream.EmitRecord(bitc::MODULE_CODE_VERSION, VersionVals);
SmallVector<unsigned, 1> Vals;
Vals.push_back(CurVersion);
Stream.EmitRecord(bitc::MODULE_CODE_VERSION, Vals);
}
// Analyze the module, enumerating globals, functions, etc.
@@ -565,6 +572,19 @@ static void WriteModule(const Module *M, BitstreamWriter &Stream) {
// Emit constants.
WriteModuleConstants(VE, Stream);
// FIXME: Purge aggregate values from the VE, emit a record that indicates how
// many to purge.
int NumNonAggregates = VE.PurgeAggregateValues();
if (NumNonAggregates != -1) {
SmallVector<unsigned, 1> Vals;
Vals.push_back(NumNonAggregates);
Stream.EmitRecord(bitc::MODULE_CODE_PURGEVALS, Vals);
}
// Emit function bodies.
for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I)
WriteFunction(*I, VE, Stream);
// Emit the type symbol table information.
WriteTypeSymbolTable(M->getTypeSymbolTable(), VE, Stream);