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Switch ValueSymbolTable to use StringMap<Value*> instead of std::map<std::string, Value*>

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as its main datastructure.  There are many improvements yet to be made, but
this speeds up opt --std-compile-opts on 447.dealII by 7.3%.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34193 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2007-02-12 05:18:08 +00:00
parent fa48e9612e
commit dec628eead
16 changed files with 174 additions and 128 deletions
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2
lib/Bytecode/Writer/SlotCalculator.cpp
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@ -199,7 +199,7 @@ void SlotCalculator::processTypeSymbolTable(const TypeSymbolTable *TST) {
void SlotCalculator::processValueSymbolTable(const ValueSymbolTable *VST) {
for (ValueSymbolTable::const_iterator VI = VST->begin(), VE = VST->end();
VI != VE; ++VI)
CreateSlotIfNeeded(VI->second);
CreateSlotIfNeeded(VI->getValue());
}
void SlotCalculator::CreateSlotIfNeeded(const Value *V) {

15
lib/Bytecode/Writer/Writer.cpp
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@ -132,10 +132,9 @@ inline void BytecodeWriter::output_vbr(int i) {
output_vbr((unsigned)i << 1); // Low order bit is clear.
}
inline void BytecodeWriter::output(const std::string &s) {
unsigned Len = s.length();
inline void BytecodeWriter::output_str(const char *Str, unsigned Len) {
output_vbr(Len); // Strings may have an arbitrary length.
Out.insert(Out.end(), s.begin(), s.end());
Out.insert(Out.end(), Str, Str+Len);
}
inline void BytecodeWriter::output_data(const void *Ptr, const void *End) {
@ -1088,14 +1087,12 @@ void BytecodeWriter::outputValueSymbolTable(const ValueSymbolTable &VST) {
true/*ElideIfEmpty*/);
// Organize the symbol table by type
typedef std::pair<const std::string*, const Value*> PlaneMapEntry;
typedef SmallVector<PlaneMapEntry, 8> PlaneMapVector;
typedef SmallVector<const ValueName*, 8> PlaneMapVector;
typedef DenseMap<const Type*, PlaneMapVector > PlaneMap;
PlaneMap Planes;
for (ValueSymbolTable::const_iterator SI = VST.begin(), SE = VST.end();
SI != SE; ++SI)
Planes[SI->second->getType()]
.push_back(std::make_pair(&SI->first, SI->second));
Planes[SI->getValue()->getType()].push_back(&*SI);
for (PlaneMap::iterator PI = Planes.begin(), PE = Planes.end();
PI != PE; ++PI) {
@ -1113,8 +1110,8 @@ void BytecodeWriter::outputValueSymbolTable(const ValueSymbolTable &VST) {
// Write each of the values in this plane
for (; I != End; ++I) {
// Symtab entry: [def slot #][name]
output_vbr(Table.getSlot(I->second));
output(*I->first);
output_vbr(Table.getSlot((*I)->getValue()));
output_str((*I)->getKeyData(), (*I)->getKeyLength());
}
}
}

5
lib/Bytecode/Writer/WriterInternals.h
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@ -85,7 +85,10 @@ private:
/// @brief Signed 32-bit variable bit rate output primitive.
inline void output_vbr(int i);
inline void output(const std::string &s);
inline void output_str(const char *Str, unsigned Len);
inline void output(const std::string &s) {
output_str(&s[0], s.size());
}
inline void output_data(const void *Ptr, const void *End);