X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FVMCore%2FAttributes.cpp;h=ff0cc9bf00e46029f62bc77b583b25c655555e37;hb=b0bc6c361da9009e8414efde317d9bbff755f6c0;hp=ff532642ab75894e7ca94d3a4dd88bf33290c5b0;hpb=1e480009662c4ec56e16fc5b44fb9affef98bcbc;p=oota-llvm.git diff --git a/lib/VMCore/Attributes.cpp b/lib/VMCore/Attributes.cpp index ff532642ab7..ff0cc9bf00e 100644 --- a/lib/VMCore/Attributes.cpp +++ b/lib/VMCore/Attributes.cpp @@ -1,4 +1,4 @@ -//===-- Attributes.cpp - Implement ParamAttrsList -------------------------===// +//===-- Attributes.cpp - Implement AttributesList -------------------------===// // // The LLVM Compiler Infrastructure // @@ -7,7 +7,7 @@ // //===----------------------------------------------------------------------===// // -// This file implements the ParamAttrsList class and ParamAttr utilities. +// This file implements the AttributesList class and Attribute utilities. // //===----------------------------------------------------------------------===// @@ -15,58 +15,87 @@ #include "llvm/Type.h" #include "llvm/ADT/StringExtras.h" #include "llvm/ADT/FoldingSet.h" -#include "llvm/Support/Streams.h" +#include "llvm/System/Atomic.h" +#include "llvm/System/Mutex.h" +#include "llvm/Support/Debug.h" #include "llvm/Support/ManagedStatic.h" +#include "llvm/Support/raw_ostream.h" using namespace llvm; //===----------------------------------------------------------------------===// -// ParamAttr Function Definitions +// Attribute Function Definitions //===----------------------------------------------------------------------===// -std::string ParamAttr::getAsString(Attributes Attrs) { +std::string Attribute::getAsString(Attributes Attrs) { std::string Result; - if (Attrs & ParamAttr::ZExt) + if (Attrs & Attribute::ZExt) Result += "zeroext "; - if (Attrs & ParamAttr::SExt) + if (Attrs & Attribute::SExt) Result += "signext "; - if (Attrs & ParamAttr::NoReturn) + if (Attrs & Attribute::NoReturn) Result += "noreturn "; - if (Attrs & ParamAttr::NoUnwind) + if (Attrs & Attribute::NoUnwind) Result += "nounwind "; - if (Attrs & ParamAttr::InReg) + if (Attrs & Attribute::InReg) Result += "inreg "; - if (Attrs & ParamAttr::NoAlias) + if (Attrs & Attribute::NoAlias) Result += "noalias "; - if (Attrs & ParamAttr::StructRet) - Result += "sret "; - if (Attrs & ParamAttr::ByVal) + if (Attrs & Attribute::NoCapture) + Result += "nocapture "; + if (Attrs & Attribute::StructRet) + Result += "sret "; + if (Attrs & Attribute::ByVal) Result += "byval "; - if (Attrs & ParamAttr::Nest) + if (Attrs & Attribute::Nest) Result += "nest "; - if (Attrs & ParamAttr::ReadNone) + if (Attrs & Attribute::ReadNone) Result += "readnone "; - if (Attrs & ParamAttr::ReadOnly) + if (Attrs & Attribute::ReadOnly) Result += "readonly "; - if (Attrs & ParamAttr::Alignment) { + if (Attrs & Attribute::OptimizeForSize) + 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::StackAlignment) { + Result += "alignstack("; + Result += utostr(Attribute::getStackAlignmentFromAttrs(Attrs)); + Result += ") "; + } + if (Attrs & Attribute::Alignment) { Result += "align "; - Result += utostr((Attrs & ParamAttr::Alignment) >> 16); + Result += utostr(Attribute::getAlignmentFromAttrs(Attrs)); Result += " "; } // Trim the trailing space. + assert(!Result.empty() && "Unknown attribute!"); Result.erase(Result.end()-1); return Result; } -Attributes ParamAttr::typeIncompatible(const Type *Ty) { +Attributes Attribute::typeIncompatible(const Type *Ty) { Attributes Incompatible = None; - if (!Ty->isInteger()) + if (!Ty->isIntegerTy()) // Attributes that only apply to integers. Incompatible |= SExt | ZExt; if (!isa(Ty)) // Attributes that only apply to pointers. - Incompatible |= ByVal | Nest | NoAlias | StructRet; + Incompatible |= ByVal | Nest | NoAlias | StructRet | NoCapture; return Incompatible; } @@ -77,27 +106,30 @@ Attributes ParamAttr::typeIncompatible(const Type *Ty) { namespace llvm { class AttributeListImpl : public FoldingSetNode { - unsigned RefCount; + sys::cas_flag RefCount; - // ParamAttrsList is uniqued, these should not be publicly available. + // AttributesList is uniqued, these should not be publicly available. void operator=(const AttributeListImpl &); // Do not implement AttributeListImpl(const AttributeListImpl &); // Do not implement ~AttributeListImpl(); // Private implementation public: - SmallVector Attrs; + SmallVector Attrs; - AttributeListImpl(const ParamAttrsWithIndex *Attr, unsigned NumAttrs) + AttributeListImpl(const AttributeWithIndex *Attr, unsigned NumAttrs) : Attrs(Attr, Attr+NumAttrs) { RefCount = 0; } - void AddRef() { ++RefCount; } - void DropRef() { if (--RefCount == 0) delete this; } + void AddRef() { sys::AtomicIncrement(&RefCount); } + void DropRef() { + sys::cas_flag old = sys::AtomicDecrement(&RefCount); + if (old == 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 ParamAttrsWithIndex *Attr, + static void Profile(FoldingSetNodeID &ID, const AttributeWithIndex *Attr, unsigned NumAttrs) { for (unsigned i = 0; i != NumAttrs; ++i) ID.AddInteger(uint64_t(Attr[i].Attrs) << 32 | unsigned(Attr[i].Index)); @@ -105,24 +137,26 @@ public: }; } -static ManagedStatic > ParamAttrsLists; +static ManagedStatic > ALMutex; +static ManagedStatic > AttributesLists; AttributeListImpl::~AttributeListImpl() { - ParamAttrsLists->RemoveNode(this); + sys::SmartScopedLock Lock(*ALMutex); + AttributesLists->RemoveNode(this); } -PAListPtr PAListPtr::get(const ParamAttrsWithIndex *Attrs, unsigned NumAttrs) { - // If there are no attributes then return a null ParamAttrsList pointer. +AttrListPtr AttrListPtr::get(const AttributeWithIndex *Attrs, unsigned NumAttrs) { + // If there are no attributes then return a null AttributesList pointer. if (NumAttrs == 0) - return PAListPtr(); + return AttrListPtr(); #ifndef NDEBUG for (unsigned i = 0; i != NumAttrs; ++i) { - assert(Attrs[i].Attrs != ParamAttr::None && - "Pointless parameter attribute!"); + assert(Attrs[i].Attrs != Attribute::None && + "Pointless attribute!"); assert((!i || Attrs[i-1].Index < Attrs[i].Index) && - "Misordered ParamAttrsList!"); + "Misordered AttributesList!"); } #endif @@ -130,79 +164,82 @@ PAListPtr PAListPtr::get(const ParamAttrsWithIndex *Attrs, unsigned NumAttrs) { FoldingSetNodeID ID; AttributeListImpl::Profile(ID, Attrs, NumAttrs); void *InsertPos; + + sys::SmartScopedLock Lock(*ALMutex); + AttributeListImpl *PAL = - ParamAttrsLists->FindNodeOrInsertPos(ID, InsertPos); + AttributesLists->FindNodeOrInsertPos(ID, InsertPos); // If we didn't find any existing attributes of the same shape then // create a new one and insert it. if (!PAL) { PAL = new AttributeListImpl(Attrs, NumAttrs); - ParamAttrsLists->InsertNode(PAL, InsertPos); + AttributesLists->InsertNode(PAL, InsertPos); } - // Return the ParamAttrsList that we found or created. - return PAListPtr(PAL); + // Return the AttributesList that we found or created. + return AttrListPtr(PAL); } //===----------------------------------------------------------------------===// -// PAListPtr Method Implementations +// AttrListPtr Method Implementations //===----------------------------------------------------------------------===// -PAListPtr::PAListPtr(AttributeListImpl *LI) : PAList(LI) { +AttrListPtr::AttrListPtr(AttributeListImpl *LI) : AttrList(LI) { if (LI) LI->AddRef(); } -PAListPtr::PAListPtr(const PAListPtr &P) : PAList(P.PAList) { - if (PAList) PAList->AddRef(); +AttrListPtr::AttrListPtr(const AttrListPtr &P) : AttrList(P.AttrList) { + if (AttrList) AttrList->AddRef(); } -const PAListPtr &PAListPtr::operator=(const PAListPtr &RHS) { - if (PAList == RHS.PAList) return *this; - if (PAList) PAList->DropRef(); - PAList = RHS.PAList; - if (PAList) PAList->AddRef(); +const AttrListPtr &AttrListPtr::operator=(const AttrListPtr &RHS) { + if (AttrList == RHS.AttrList) return *this; + if (AttrList) AttrList->DropRef(); + AttrList = RHS.AttrList; + if (AttrList) AttrList->AddRef(); return *this; } -PAListPtr::~PAListPtr() { - if (PAList) PAList->DropRef(); +AttrListPtr::~AttrListPtr() { + if (AttrList) AttrList->DropRef(); } /// getNumSlots - Return the number of slots used in this attribute list. /// This is the number of arguments that have an attribute set on them /// (including the function itself). -unsigned PAListPtr::getNumSlots() const { - return PAList ? PAList->Attrs.size() : 0; +unsigned AttrListPtr::getNumSlots() const { + return AttrList ? AttrList->Attrs.size() : 0; } -/// getSlot - Return the ParamAttrsWithIndex at the specified slot. This -/// holds a parameter number plus a set of attributes. -const ParamAttrsWithIndex &PAListPtr::getSlot(unsigned Slot) const { - assert(PAList && Slot < PAList->Attrs.size() && "Slot # out of range!"); - return PAList->Attrs[Slot]; +/// getSlot - Return the AttributeWithIndex at the specified slot. This +/// holds a number plus a set of attributes. +const AttributeWithIndex &AttrListPtr::getSlot(unsigned Slot) const { + assert(AttrList && Slot < AttrList->Attrs.size() && "Slot # out of range!"); + return AttrList->Attrs[Slot]; } -/// getParamAttrs - The parameter attributes for the specified parameter are -/// returned. Parameters for the result are denoted with Idx = 0. +/// getAttributes - The attributes for the specified index are +/// returned. Attributes for the result are denoted with Idx = 0. /// Function notes are denoted with idx = ~0. -Attributes PAListPtr::getParamAttrs(unsigned Idx) const { - if (PAList == 0) return ParamAttr::None; +Attributes AttrListPtr::getAttributes(unsigned Idx) const { + if (AttrList == 0) return Attribute::None; - const SmallVector &Attrs = PAList->Attrs; + const SmallVector &Attrs = AttrList->Attrs; for (unsigned i = 0, e = Attrs.size(); i != e && Attrs[i].Index <= Idx; ++i) if (Attrs[i].Index == Idx) return Attrs[i].Attrs; - return ParamAttr::None; + return Attribute::None; } /// hasAttrSomewhere - Return true if the specified attribute is set for at /// least one parameter or for the return value. -bool PAListPtr::hasAttrSomewhere(Attributes Attr) const { - if (PAList == 0) return false; +bool AttrListPtr::hasAttrSomewhere(Attributes Attr) const { + if (AttrList == 0) return false; - const SmallVector &Attrs = PAList->Attrs; + const SmallVector &Attrs = AttrList->Attrs; for (unsigned i = 0, e = Attrs.size(); i != e; ++i) if (Attrs[i].Attrs & Attr) return true; @@ -210,13 +247,13 @@ bool PAListPtr::hasAttrSomewhere(Attributes Attr) const { } -PAListPtr PAListPtr::addAttr(unsigned Idx, Attributes Attrs) const { - Attributes OldAttrs = getParamAttrs(Idx); +AttrListPtr AttrListPtr::addAttr(unsigned Idx, Attributes Attrs) const { + Attributes OldAttrs = getAttributes(Idx); #ifndef NDEBUG // FIXME it is not obvious how this should work for alignment. // For now, say we can't change a known alignment. - Attributes OldAlign = OldAttrs & ParamAttr::Alignment; - Attributes NewAlign = Attrs & ParamAttr::Alignment; + Attributes OldAlign = OldAttrs & Attribute::Alignment; + Attributes NewAlign = Attrs & Attribute::Alignment; assert((!OldAlign || !NewAlign || OldAlign == NewAlign) && "Attempt to change alignment!"); #endif @@ -225,11 +262,11 @@ PAListPtr PAListPtr::addAttr(unsigned Idx, Attributes Attrs) const { if (NewAttrs == OldAttrs) return *this; - SmallVector NewAttrList; - if (PAList == 0) - NewAttrList.push_back(ParamAttrsWithIndex::get(Idx, Attrs)); + SmallVector NewAttrList; + if (AttrList == 0) + NewAttrList.push_back(AttributeWithIndex::get(Idx, Attrs)); else { - const SmallVector &OldAttrList = PAList->Attrs; + const SmallVector &OldAttrList = AttrList->Attrs; unsigned i = 0, e = OldAttrList.size(); // Copy attributes for arguments before this one. for (; i != e && OldAttrList[i].Index < Idx; ++i) @@ -241,31 +278,31 @@ PAListPtr PAListPtr::addAttr(unsigned Idx, Attributes Attrs) const { ++i; } - NewAttrList.push_back(ParamAttrsWithIndex::get(Idx, Attrs)); + NewAttrList.push_back(AttributeWithIndex::get(Idx, Attrs)); // Copy attributes for arguments after this one. NewAttrList.insert(NewAttrList.end(), OldAttrList.begin()+i, OldAttrList.end()); } - return get(&NewAttrList[0], NewAttrList.size()); + return get(NewAttrList.data(), NewAttrList.size()); } -PAListPtr PAListPtr::removeAttr(unsigned Idx, Attributes Attrs) const { +AttrListPtr AttrListPtr::removeAttr(unsigned Idx, Attributes Attrs) const { #ifndef NDEBUG // FIXME it is not obvious how this should work for alignment. // For now, say we can't pass in alignment, which no current use does. - assert(!(Attrs & ParamAttr::Alignment) && "Attempt to exclude alignment!"); + assert(!(Attrs & Attribute::Alignment) && "Attempt to exclude alignment!"); #endif - if (PAList == 0) return PAListPtr(); + if (AttrList == 0) return AttrListPtr(); - Attributes OldAttrs = getParamAttrs(Idx); + Attributes OldAttrs = getAttributes(Idx); Attributes NewAttrs = OldAttrs & ~Attrs; if (NewAttrs == OldAttrs) return *this; - SmallVector NewAttrList; - const SmallVector &OldAttrList = PAList->Attrs; + SmallVector NewAttrList; + const SmallVector &OldAttrList = AttrList->Attrs; unsigned i = 0, e = OldAttrList.size(); // Copy attributes for arguments before this one. @@ -277,21 +314,21 @@ PAListPtr PAListPtr::removeAttr(unsigned Idx, Attributes Attrs) const { Attrs = OldAttrList[i].Attrs & ~Attrs; ++i; if (Attrs) // If any attributes left for this parameter, add them. - NewAttrList.push_back(ParamAttrsWithIndex::get(Idx, Attrs)); + NewAttrList.push_back(AttributeWithIndex::get(Idx, Attrs)); // Copy attributes for arguments after this one. NewAttrList.insert(NewAttrList.end(), OldAttrList.begin()+i, OldAttrList.end()); - return get(&NewAttrList[0], NewAttrList.size()); + return get(NewAttrList.data(), NewAttrList.size()); } -void PAListPtr::dump() const { - cerr << "PAL[ "; +void AttrListPtr::dump() const { + dbgs() << "PAL[ "; for (unsigned i = 0; i < getNumSlots(); ++i) { - const ParamAttrsWithIndex &PAWI = getSlot(i); - cerr << "{" << PAWI.Index << "," << PAWI.Attrs << "} "; + const AttributeWithIndex &PAWI = getSlot(i); + dbgs() << "{" << PAWI.Index << "," << PAWI.Attrs << "} "; } - cerr << "]\n"; + dbgs() << "]\n"; }