Move default to top of switch

[oota-llvm.git] / lib / VMCore / Attributes.cpp

diff --git a/lib/VMCore/Attributes.cpp b/lib/VMCore/Attributes.cpp
index dd47814d97ad971cecd4be5c751aa85870a93aaf..485be75d1b1274d5cbaee2015d5c7cc0419aaffc 100644 (file)
--- a/lib/VMCore/Attributes.cpp
+++ b/lib/VMCore/Attributes.cpp
@@ -15,8 +15,11 @@
 #include "llvm/Type.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/FoldingSet.h"
-#include "llvm/Support/Streams.h"
+#include "llvm/Support/Atomic.h"
+#include "llvm/Support/Mutex.h"
+#include "llvm/Support/Debug.h"
 #include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/raw_ostream.h"
 using namespace llvm;
 
 //===----------------------------------------------------------------------===//
@@ -33,6 +36,10 @@ std::string Attribute::getAsString(Attributes Attrs) {
     Result += "noreturn ";
   if (Attrs & Attribute::NoUnwind)
     Result += "nounwind ";
+  if (Attrs & Attribute::UWTable)
+    Result += "uwtable ";
+  if (Attrs & Attribute::ReturnsTwice)
+    Result += "returns_twice ";
   if (Attrs & Attribute::InReg)
     Result += "inreg ";
   if (Attrs & Attribute::NoAlias)
@@ -40,7 +47,7 @@ std::string Attribute::getAsString(Attributes Attrs) {
   if (Attrs & Attribute::NoCapture)
     Result += "nocapture ";
   if (Attrs & Attribute::StructRet)
-    Result += "sret ";  
+    Result += "sret ";
   if (Attrs & Attribute::ByVal)
     Result += "byval ";
   if (Attrs & Attribute::Nest)
@@ -53,15 +60,30 @@ std::string Attribute::getAsString(Attributes Attrs) {
     Result += "optsize ";
   if (Attrs & Attribute::NoInline)
     Result += "noinline ";
+  if (Attrs & Attribute::InlineHint)
+    Result += "inlinehint ";
   if (Attrs & Attribute::AlwaysInline)
     Result += "alwaysinline ";
   if (Attrs & Attribute::StackProtect)
     Result += "ssp ";
   if (Attrs & Attribute::StackProtectReq)
     Result += "sspreq ";
+  if (Attrs & Attribute::NoRedZone)
+    Result += "noredzone ";
+  if (Attrs & Attribute::NoImplicitFloat)
+    Result += "noimplicitfloat ";
+  if (Attrs & Attribute::Naked)
+    Result += "naked ";
+  if (Attrs & Attribute::NonLazyBind)
+    Result += "nonlazybind ";
+  if (Attrs & Attribute::StackAlignment) {
+    Result += "alignstack(";
+    Result += utostr(Attribute::getStackAlignmentFromAttrs(Attrs));
+    Result += ") ";
+  }
   if (Attrs & Attribute::Alignment) {
     Result += "align ";
-    Result += utostr(1ull << (((Attrs & Attribute::Alignment)>>16) - 1));
+    Result += utostr(Attribute::getAlignmentFromAttrs(Attrs));
     Result += " ";
   }
   // Trim the trailing space.
@@ -70,14 +92,14 @@ std::string Attribute::getAsString(Attributes Attrs) {
   return Result;
 }
 
-Attributes Attribute::typeIncompatible(const Type *Ty) {
+Attributes Attribute::typeIncompatible(Type *Ty) {
   Attributes Incompatible = None;
   
-  if (!Ty->isInteger())
+  if (!Ty->isIntegerTy())
     // Attributes that only apply to integers.
     Incompatible |= SExt | ZExt;
   
-  if (!isa<PointerType>(Ty))
+  if (!Ty->isPointerTy())
     // Attributes that only apply to pointers.
     Incompatible |= ByVal | Nest | NoAlias | StructRet | NoCapture;
   
@@ -89,8 +111,16 @@ Attributes Attribute::typeIncompatible(const Type *Ty) {
 //===----------------------------------------------------------------------===//
 
 namespace llvm {
+  class AttributeListImpl;
+}
+
+static ManagedStatic<FoldingSet<AttributeListImpl> > AttributesLists;
+
+namespace llvm {
+static ManagedStatic<sys::SmartMutex<true> > ALMutex;
+
 class AttributeListImpl : public FoldingSetNode {
-  unsigned RefCount;
+  sys::cas_flag RefCount;
   
   // AttributesList is uniqued, these should not be publicly available.
   void operator=(const AttributeListImpl &); // Do not implement
@@ -104,11 +134,21 @@ public:
     RefCount = 0;
   }
   
-  void AddRef() { ++RefCount; }
-  void DropRef() { if (--RefCount == 0) delete this; }
+  void AddRef() {
+    sys::SmartScopedLock<true> Lock(*ALMutex);
+    ++RefCount;
+  }
+  void DropRef() {
+    sys::SmartScopedLock<true> Lock(*ALMutex);
+    if (!AttributesLists.isConstructed())
+      return;
+    sys::cas_flag new_val = --RefCount;
+    if (new_val == 0)
+      delete this;
+  }
   
   void Profile(FoldingSetNodeID &ID) const {
-    Profile(ID, &Attrs[0], Attrs.size());
+    Profile(ID, Attrs.data(), Attrs.size());
   }
   static void Profile(FoldingSetNodeID &ID, const AttributeWithIndex *Attr,
                       unsigned NumAttrs) {
@@ -118,9 +158,8 @@ public:
 };
 }
 
-static ManagedStatic<FoldingSet<AttributeListImpl> > AttributesLists;
-
 AttributeListImpl::~AttributeListImpl() {
+  // NOTE: Lock must be acquired by caller.
   AttributesLists->RemoveNode(this);
 }
 
@@ -143,6 +182,9 @@ AttrListPtr AttrListPtr::get(const AttributeWithIndex *Attrs, unsigned NumAttrs)
   FoldingSetNodeID ID;
   AttributeListImpl::Profile(ID, Attrs, NumAttrs);
   void *InsertPos;
+  
+  sys::SmartScopedLock<true> Lock(*ALMutex);
+  
   AttributeListImpl *PAL =
     AttributesLists->FindNodeOrInsertPos(ID, InsertPos);
   
@@ -171,6 +213,7 @@ AttrListPtr::AttrListPtr(const AttrListPtr &P) : AttrList(P.AttrList) {
 }
 
 const AttrListPtr &AttrListPtr::operator=(const AttrListPtr &RHS) {
+  sys::SmartScopedLock<true> Lock(*ALMutex);
   if (AttrList == RHS.AttrList) return *this;
   if (AttrList) AttrList->DropRef();
   AttrList = RHS.AttrList;
@@ -261,7 +304,7 @@ AttrListPtr AttrListPtr::addAttr(unsigned Idx, Attributes Attrs) const {
                        OldAttrList.begin()+i, OldAttrList.end());
   }
   
-  return get(&NewAttrList[0], NewAttrList.size());
+  return get(NewAttrList.data(), NewAttrList.size());
 }
 
 AttrListPtr AttrListPtr::removeAttr(unsigned Idx, Attributes Attrs) const {
@@ -296,15 +339,15 @@ AttrListPtr AttrListPtr::removeAttr(unsigned Idx, Attributes Attrs) const {
   NewAttrList.insert(NewAttrList.end(), 
                      OldAttrList.begin()+i, OldAttrList.end());
   
-  return get(&NewAttrList[0], NewAttrList.size());
+  return get(NewAttrList.data(), NewAttrList.size());
 }
 
 void AttrListPtr::dump() const {
-  cerr << "PAL[ ";
+  dbgs() << "PAL[ ";
   for (unsigned i = 0; i < getNumSlots(); ++i) {
     const AttributeWithIndex &PAWI = getSlot(i);
-    cerr << "{" << PAWI.Index << "," << PAWI.Attrs << "} ";
+    dbgs() << "{" << PAWI.Index << "," << PAWI.Attrs << "} ";
   }
   
-  cerr << "]\n";
+  dbgs() << "]\n";
 }