Changes in directory llvm/lib/Bytecode/Writer:
Writer.cpp updated: 1.163 -> 1.164
---
Log message:
Make BytecodeWriter::outputValueSymbolTable *significantly* less abusive
of memory, through a combination of DenseMap and SmallVector. This speeds
up bcwriter on 447.dealII from 1.31s to 0.82s (60% faster).
---
Diffs of the changes: (+4 -3)
Writer.cpp | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
Index: llvm/lib/Bytecode/Writer/Writer.cpp
diff -u llvm/lib/Bytecode/Writer/Writer.cpp:1.163
llvm/lib/Bytecode/Writer/Writer.cpp:1.164
--- llvm/lib/Bytecode/Writer/Writer.cpp:1.163 Sat Feb 10 01:11:51 2007
+++ llvm/lib/Bytecode/Writer/Writer.cpp Sat Feb 10 01:31:44 2007
@@ -33,6 +33,7 @@
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/Streams.h"
#include "llvm/System/Program.h"
+#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Statistic.h"
#include <cstring>
@@ -1087,15 +1088,15 @@
// Organize the symbol table by type
typedef std::pair<const std::string*, const Value*> PlaneMapEntry;
- typedef std::vector<PlaneMapEntry> PlaneMapVector;
- typedef std::map<const Type*, PlaneMapVector > PlaneMap;
+ typedef SmallVector<PlaneMapEntry, 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));
- for (PlaneMap::const_iterator PI = Planes.begin(), PE = Planes.end();
+ for (PlaneMap::iterator PI = Planes.begin(), PE = Planes.end();
PI != PE; ++PI) {
PlaneMapVector::const_iterator I = PI->second.begin();
PlaneMapVector::const_iterator End = PI->second.end();
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