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Fix memcheck-found leaks: one false positive from using new[], and one true

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positive where pointers would be leaked on llvm_shutdown.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97759 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jeffrey Yasskin 2010-03-04 22:15:01 +00:00
parent b58a59b3c1
commit e8cfa63e4e
1 changed files with 28 additions and 9 deletions
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37
lib/CodeGen/PseudoSourceValue.cpp
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@ -18,19 +18,38 @@
#include "llvm/Support/ErrorHandling.h" #include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/ManagedStatic.h" #include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/raw_ostream.h" #include "llvm/Support/raw_ostream.h"
#include "llvm/System/Mutex.h"
#include <map> #include <map>
using namespace llvm; using namespace llvm;
static ManagedStatic<PseudoSourceValue[4]> PSVs; namespace {
struct PSVGlobalsTy {
// PseudoSourceValues are immutable so don't need locking.
const PseudoSourceValue PSVs[4];
sys::Mutex Lock; // Guards FSValues, but not the values inside it.
std::map<int, const PseudoSourceValue *> FSValues;
PSVGlobalsTy() : PSVs() {}
~PSVGlobalsTy() {
for (std::map<int, const PseudoSourceValue *>::iterator
I = FSValues.begin(), E = FSValues.end(); I != E; ++I) {
delete I->second;
}
}
};
static ManagedStatic<PSVGlobalsTy> PSVGlobals;
} // anonymous namespace
const PseudoSourceValue *PseudoSourceValue::getStack() const PseudoSourceValue *PseudoSourceValue::getStack()
{ return &(*PSVs)[0]; } { return &PSVGlobals->PSVs[0]; }
const PseudoSourceValue *PseudoSourceValue::getGOT() const PseudoSourceValue *PseudoSourceValue::getGOT()
{ return &(*PSVs)[1]; } { return &PSVGlobals->PSVs[1]; }
const PseudoSourceValue *PseudoSourceValue::getJumpTable() const PseudoSourceValue *PseudoSourceValue::getJumpTable()
{ return &(*PSVs)[2]; } { return &PSVGlobals->PSVs[2]; }
const PseudoSourceValue *PseudoSourceValue::getConstantPool() const PseudoSourceValue *PseudoSourceValue::getConstantPool()
{ return &(*PSVs)[3]; } { return &PSVGlobals->PSVs[3]; }
static const char *const PSVNames[] = { static const char *const PSVNames[] = {
"Stack", "Stack",
@ -48,13 +67,13 @@ PseudoSourceValue::PseudoSourceValue(enum ValueTy Subclass) :
Subclass) {} Subclass) {}
void PseudoSourceValue::printCustom(raw_ostream &O) const { void PseudoSourceValue::printCustom(raw_ostream &O) const {
O << PSVNames[this - *PSVs]; O << PSVNames[this - PSVGlobals->PSVs];
} }
static ManagedStatic<std::map<int, const PseudoSourceValue *> > FSValues;
const PseudoSourceValue *PseudoSourceValue::getFixedStack(int FI) { const PseudoSourceValue *PseudoSourceValue::getFixedStack(int FI) {
const PseudoSourceValue *&V = (*FSValues)[FI]; PSVGlobalsTy &PG = *PSVGlobals;
sys::ScopedLock locked(PG.Lock);
const PseudoSourceValue *&V = PG.FSValues[FI];
if (!V) if (!V)
V = new FixedStackPseudoSourceValue(FI); V = new FixedStackPseudoSourceValue(FI);
return V; return V;