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Provide guards for this shared structure. I'm not sure this actually needs

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to be shared, but how/where to privatize it is not immediately clear to me.

If any SelectionDAG experts see a better solution, please share!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74180 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson
2009-06-25 17:09:00 +00:00
parent a8dbf36f3f
commit b4459088d6
1 changed files with 8 additions and 3 deletions
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11
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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@@ -31,8 +31,10 @@
#include "llvm/Target/TargetInstrInfo.h" #include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetMachine.h" #include "llvm/Target/TargetMachine.h"
#include "llvm/Support/CommandLine.h" #include "llvm/Support/CommandLine.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MathExtras.h" #include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h" #include "llvm/Support/raw_ostream.h"
#include "llvm/System/Mutex.h"
#include "llvm/ADT/SetVector.h" #include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallPtrSet.h" #include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallSet.h" #include "llvm/ADT/SmallSet.h"
@@ -4977,14 +4979,17 @@ void SDNode::Profile(FoldingSetNodeID &ID) const {
AddNodeIDNode(ID, this); AddNodeIDNode(ID, this);
} }
static ManagedStatic<std::set<MVT, MVT::compareRawBits> > EVTs;
static MVT VTs[MVT::LAST_VALUETYPE];
static ManagedStatic<sys::SmartMutex<true> > VTMutex;
/// getValueTypeList - Return a pointer to the specified value type. /// getValueTypeList - Return a pointer to the specified value type.
/// ///
const MVT *SDNode::getValueTypeList(MVT VT) { const MVT *SDNode::getValueTypeList(MVT VT) {
sys::SmartScopedLock<true> Lock(&*VTMutex);
if (VT.isExtended()) { if (VT.isExtended()) {
static std::set<MVT, MVT::compareRawBits> EVTs; return &(*EVTs->insert(VT).first);
return &(*EVTs.insert(VT).first);
} else { } else {
static MVT VTs[MVT::LAST_VALUETYPE];
VTs[VT.getSimpleVT()] = VT; VTs[VT.getSimpleVT()] = VT;
return &VTs[VT.getSimpleVT()]; return &VTs[VT.getSimpleVT()];
} }