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Type safety for Constants.cpp! Some of this is temporary, as I'm planning to push some of the R/W locking into FoldingSet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73624 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson
parent
52237119a9
commit
3e456abde2
@ -25,6 +25,8 @@
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/MathExtras.h"
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#include "llvm/Support/Threading.h"
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#include "llvm/System/RWMutex.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/SmallVector.h"
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#include <algorithm>
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@ -35,6 +37,8 @@ using namespace llvm;
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// Constant Class
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//===----------------------------------------------------------------------===//
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ManagedStatic<sys::RWMutex> ConstantsLock;
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void Constant::destroyConstantImpl() {
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// When a Constant is destroyed, there may be lingering
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// references to the constant by other constants in the constant pool. These
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@ -295,12 +299,30 @@ ConstantInt *ConstantInt::get(const APInt& V) {
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const IntegerType *ITy = IntegerType::get(V.getBitWidth());
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// get an existing value or the insertion position
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DenseMapAPIntKeyInfo::KeyTy Key(V, ITy);
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ConstantInt *&Slot = (*IntConstants)[Key];
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// if it exists, return it.
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if (Slot)
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if (llvm_is_multithreaded()) {
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ConstantsLock->reader_acquire();
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ConstantInt *&Slot = (*IntConstants)[Key];
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ConstantsLock->reader_release();
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if (!Slot) {
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ConstantsLock->writer_acquire();
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ConstantInt *&Slot = (*IntConstants)[Key];
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if (!Slot) {
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Slot = new ConstantInt(ITy, V);
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}
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ConstantsLock->writer_release();
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}
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return Slot;
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// otherwise create a new one, insert it, and return it.
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return Slot = new ConstantInt(ITy, V);
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} else {
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ConstantInt *&Slot = (*IntConstants)[Key];
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// if it exists, return it.
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if (Slot)
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return Slot;
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// otherwise create a new one, insert it, and return it.
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return Slot = new ConstantInt(ITy, V);
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}
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}
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Constant *ConstantInt::get(const Type *Ty, const APInt &V) {
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@ -392,24 +414,58 @@ static ManagedStatic<FPMapTy> FPConstants;
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ConstantFP *ConstantFP::get(const APFloat &V) {
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DenseMapAPFloatKeyInfo::KeyTy Key(V);
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ConstantFP *&Slot = (*FPConstants)[Key];
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if (Slot) return Slot;
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const Type *Ty;
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if (&V.getSemantics() == &APFloat::IEEEsingle)
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Ty = Type::FloatTy;
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else if (&V.getSemantics() == &APFloat::IEEEdouble)
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Ty = Type::DoubleTy;
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else if (&V.getSemantics() == &APFloat::x87DoubleExtended)
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Ty = Type::X86_FP80Ty;
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else if (&V.getSemantics() == &APFloat::IEEEquad)
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Ty = Type::FP128Ty;
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else {
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assert(&V.getSemantics() == &APFloat::PPCDoubleDouble&&"Unknown FP format");
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Ty = Type::PPC_FP128Ty;
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if (llvm_is_multithreaded()) {
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ConstantsLock->reader_acquire();
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ConstantFP *&Slot = (*FPConstants)[Key];
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ConstantsLock->reader_release();
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if (!Slot) {
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ConstantsLock->writer_acquire();
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Slot = (*FPConstants)[Key];
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if (!Slot) {
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const Type *Ty;
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if (&V.getSemantics() == &APFloat::IEEEsingle)
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Ty = Type::FloatTy;
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else if (&V.getSemantics() == &APFloat::IEEEdouble)
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Ty = Type::DoubleTy;
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else if (&V.getSemantics() == &APFloat::x87DoubleExtended)
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Ty = Type::X86_FP80Ty;
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else if (&V.getSemantics() == &APFloat::IEEEquad)
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Ty = Type::FP128Ty;
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else {
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assert(&V.getSemantics() == &APFloat::PPCDoubleDouble &&
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"Unknown FP format");
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Ty = Type::PPC_FP128Ty;
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}
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Slot = new ConstantFP(Ty, V);
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}
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ConstantsLock->writer_release();
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}
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return Slot;
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} else {
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ConstantFP *&Slot = (*FPConstants)[Key];
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if (Slot) return Slot;
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const Type *Ty;
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if (&V.getSemantics() == &APFloat::IEEEsingle)
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Ty = Type::FloatTy;
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else if (&V.getSemantics() == &APFloat::IEEEdouble)
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Ty = Type::DoubleTy;
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else if (&V.getSemantics() == &APFloat::x87DoubleExtended)
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Ty = Type::X86_FP80Ty;
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else if (&V.getSemantics() == &APFloat::IEEEquad)
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Ty = Type::FP128Ty;
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else {
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assert(&V.getSemantics() == &APFloat::PPCDoubleDouble &&
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"Unknown FP format");
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Ty = Type::PPC_FP128Ty;
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}
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return Slot = new ConstantFP(Ty, V);
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}
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return Slot = new ConstantFP(Ty, V);
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}
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/// get() - This returns a constant fp for the specified value in the
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@ -1346,13 +1402,19 @@ static char getValType(ConstantAggregateZero *CPZ) { return 0; }
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ConstantAggregateZero *ConstantAggregateZero::get(const Type *Ty) {
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assert((isa<StructType>(Ty) || isa<ArrayType>(Ty) || isa<VectorType>(Ty)) &&
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"Cannot create an aggregate zero of non-aggregate type!");
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return AggZeroConstants->getOrCreate(Ty, 0);
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ConstantAggregateZero* result = 0;
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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result = AggZeroConstants->getOrCreate(Ty, 0);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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return result;
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}
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/// destroyConstant - Remove the constant from the constant table...
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///
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void ConstantAggregateZero::destroyConstant() {
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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AggZeroConstants->remove(this);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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destroyConstantImpl();
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}
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@ -1389,21 +1451,30 @@ static ManagedStatic<ArrayConstantsTy> ArrayConstants;
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Constant *ConstantArray::get(const ArrayType *Ty,
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const std::vector<Constant*> &V) {
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// If this is an all-zero array, return a ConstantAggregateZero object
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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if (!V.empty()) {
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Constant *C = V[0];
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if (!C->isNullValue())
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if (!C->isNullValue()) {
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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return ArrayConstants->getOrCreate(Ty, V);
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}
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for (unsigned i = 1, e = V.size(); i != e; ++i)
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if (V[i] != C)
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if (V[i] != C) {
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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return ArrayConstants->getOrCreate(Ty, V);
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}
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}
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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return ConstantAggregateZero::get(Ty);
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}
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/// destroyConstant - Remove the constant from the constant table...
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///
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void ConstantArray::destroyConstant() {
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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ArrayConstants->remove(this);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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destroyConstantImpl();
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}
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@ -1512,9 +1583,14 @@ static std::vector<Constant*> getValType(ConstantStruct *CS) {
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Constant *ConstantStruct::get(const StructType *Ty,
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const std::vector<Constant*> &V) {
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// Create a ConstantAggregateZero value if all elements are zeros...
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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for (unsigned i = 0, e = V.size(); i != e; ++i)
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if (!V[i]->isNullValue())
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return StructConstants->getOrCreate(Ty, V);
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if (!V[i]->isNullValue()) {
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Constant* result = StructConstants->getOrCreate(Ty, V);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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return result;
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}
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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return ConstantAggregateZero::get(Ty);
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}
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@ -1530,7 +1606,9 @@ Constant *ConstantStruct::get(const std::vector<Constant*> &V, bool packed) {
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// destroyConstant - Remove the constant from the constant table...
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//
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void ConstantStruct::destroyConstant() {
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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StructConstants->remove(this);
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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destroyConstantImpl();
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}
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@ -1584,7 +1662,10 @@ Constant *ConstantVector::get(const VectorType *Ty,
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return ConstantAggregateZero::get(Ty);
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if (isUndef)
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return UndefValue::get(Ty);
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return VectorConstants->getOrCreate(Ty, V);
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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Constant* result = VectorConstants->getOrCreate(Ty, V);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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return result;
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}
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Constant *ConstantVector::get(const std::vector<Constant*> &V) {
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@ -1595,7 +1676,9 @@ Constant *ConstantVector::get(const std::vector<Constant*> &V) {
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// destroyConstant - Remove the constant from the constant table...
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//
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void ConstantVector::destroyConstant() {
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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VectorConstants->remove(this);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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destroyConstantImpl();
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}
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@ -1659,13 +1742,18 @@ static char getValType(ConstantPointerNull *) {
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ConstantPointerNull *ConstantPointerNull::get(const PointerType *Ty) {
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return NullPtrConstants->getOrCreate(Ty, 0);
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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ConstantPointerNull* result = NullPtrConstants->getOrCreate(Ty, 0);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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return result;
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}
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// destroyConstant - Remove the constant from the constant table...
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//
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void ConstantPointerNull::destroyConstant() {
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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NullPtrConstants->remove(this);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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destroyConstantImpl();
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}
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@ -1702,13 +1790,18 @@ static char getValType(UndefValue *) {
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UndefValue *UndefValue::get(const Type *Ty) {
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return UndefValueConstants->getOrCreate(Ty, 0);
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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UndefValue* result = UndefValueConstants->getOrCreate(Ty, 0);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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return result;
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}
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// destroyConstant - Remove the constant from the constant table.
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//
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void UndefValue::destroyConstant() {
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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UndefValueConstants->remove(this);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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destroyConstantImpl();
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}
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@ -1722,16 +1815,21 @@ MDString::MDString(const char *begin, const char *end)
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static ManagedStatic<StringMap<MDString*> > MDStringCache;
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MDString *MDString::get(const char *StrBegin, const char *StrEnd) {
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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StringMapEntry<MDString *> &Entry = MDStringCache->GetOrCreateValue(StrBegin,
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StrEnd);
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MDString *&S = Entry.getValue();
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if (!S) S = new MDString(Entry.getKeyData(),
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Entry.getKeyData() + Entry.getKeyLength());
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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return S;
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}
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void MDString::destroyConstant() {
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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MDStringCache->erase(MDStringCache->find(StrBegin, StrEnd));
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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destroyConstantImpl();
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}
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@ -1756,18 +1854,40 @@ MDNode *MDNode::get(Value*const* Vals, unsigned NumVals) {
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for (unsigned i = 0; i != NumVals; ++i)
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ID.AddPointer(Vals[i]);
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void *InsertPoint;
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if (MDNode *N = MDNodeSet->FindNodeOrInsertPos(ID, InsertPoint))
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if (llvm_is_multithreaded()) {
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ConstantsLock->reader_acquire();
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void *InsertPoint;
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MDNode *N = MDNodeSet->FindNodeOrInsertPos(ID, InsertPoint);
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ConstantsLock->reader_release();
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if (!N) {
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ConstantsLock->writer_acquire();
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N = MDNodeSet->FindNodeOrInsertPos(ID, InsertPoint);
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if (!N) {
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// InsertPoint will have been set by the FindNodeOrInsertPos call.
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MDNode *N = new(0) MDNode(Vals, NumVals);
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MDNodeSet->InsertNode(N, InsertPoint);
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}
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ConstantsLock->writer_release();
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}
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return N;
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} else {
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void *InsertPoint;
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if (MDNode *N = MDNodeSet->FindNodeOrInsertPos(ID, InsertPoint))
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return N;
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// InsertPoint will have been set by the FindNodeOrInsertPos call.
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MDNode *N = new(0) MDNode(Vals, NumVals);
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MDNodeSet->InsertNode(N, InsertPoint);
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return N;
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// InsertPoint will have been set by the FindNodeOrInsertPos call.
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MDNode *N = new(0) MDNode(Vals, NumVals);
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MDNodeSet->InsertNode(N, InsertPoint);
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return N;
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}
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}
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void MDNode::destroyConstant() {
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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MDNodeSet->RemoveNode(this);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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destroyConstantImpl();
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}
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@ -1934,7 +2054,11 @@ static inline Constant *getFoldedCast(
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// Look up the constant in the table first to ensure uniqueness
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std::vector<Constant*> argVec(1, C);
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ExprMapKeyType Key(opc, argVec);
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return ExprConstants->getOrCreate(Ty, Key);
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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Constant* result = ExprConstants->getOrCreate(Ty, Key);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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return result;
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}
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Constant *ConstantExpr::getCast(unsigned oc, Constant *C, const Type *Ty) {
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@ -2194,7 +2318,10 @@ Constant *ConstantExpr::getTy(const Type *ReqTy, unsigned Opcode,
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std::vector<Constant*> argVec(1, C1); argVec.push_back(C2);
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ExprMapKeyType Key(Opcode, argVec);
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return ExprConstants->getOrCreate(ReqTy, Key);
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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Constant* result = ExprConstants->getOrCreate(ReqTy, Key);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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return result;
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}
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Constant *ConstantExpr::getCompareTy(unsigned short predicate,
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@ -2305,7 +2432,10 @@ Constant *ConstantExpr::getSelectTy(const Type *ReqTy, Constant *C,
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argVec[1] = V1;
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argVec[2] = V2;
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ExprMapKeyType Key(Instruction::Select, argVec);
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return ExprConstants->getOrCreate(ReqTy, Key);
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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Constant* result = ExprConstants->getOrCreate(ReqTy, Key);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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return result;
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}
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Constant *ConstantExpr::getGetElementPtrTy(const Type *ReqTy, Constant *C,
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@ -2328,7 +2458,10 @@ Constant *ConstantExpr::getGetElementPtrTy(const Type *ReqTy, Constant *C,
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for (unsigned i = 0; i != NumIdx; ++i)
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ArgVec.push_back(cast<Constant>(Idxs[i]));
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const ExprMapKeyType Key(Instruction::GetElementPtr, ArgVec);
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return ExprConstants->getOrCreate(ReqTy, Key);
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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Constant *result = ExprConstants->getOrCreate(ReqTy, Key);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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return result;
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}
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Constant *ConstantExpr::getGetElementPtr(Constant *C, Value* const *Idxs,
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@ -2362,7 +2495,10 @@ ConstantExpr::getICmp(unsigned short pred, Constant* LHS, Constant* RHS) {
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ArgVec.push_back(RHS);
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// Get the key type with both the opcode and predicate
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const ExprMapKeyType Key(Instruction::ICmp, ArgVec, pred);
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return ExprConstants->getOrCreate(Type::Int1Ty, Key);
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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Constant* result = ExprConstants->getOrCreate(Type::Int1Ty, Key);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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return result;
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}
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Constant *
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@ -2379,7 +2515,10 @@ ConstantExpr::getFCmp(unsigned short pred, Constant* LHS, Constant* RHS) {
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ArgVec.push_back(RHS);
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// Get the key type with both the opcode and predicate
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const ExprMapKeyType Key(Instruction::FCmp, ArgVec, pred);
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return ExprConstants->getOrCreate(Type::Int1Ty, Key);
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
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Constant* result = ExprConstants->getOrCreate(Type::Int1Ty, Key);
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if (llvm_is_multithreaded()) ConstantsLock->writer_release();
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return result;
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}
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Constant *
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@ -2424,7 +2563,10 @@ ConstantExpr::getVICmp(unsigned short pred, Constant* LHS, Constant* RHS) {
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ArgVec.push_back(RHS);
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// Get the key type with both the opcode and predicate
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const ExprMapKeyType Key(Instruction::VICmp, ArgVec, pred);
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return ExprConstants->getOrCreate(LHS->getType(), Key);
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if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
|
||||
Constant* result = ExprConstants->getOrCreate(LHS->getType(), Key);
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_release();
|
||||
return result;
|
||||
}
|
||||
|
||||
Constant *
|
||||
@ -2471,7 +2613,10 @@ ConstantExpr::getVFCmp(unsigned short pred, Constant* LHS, Constant* RHS) {
|
||||
ArgVec.push_back(RHS);
|
||||
// Get the key type with both the opcode and predicate
|
||||
const ExprMapKeyType Key(Instruction::VFCmp, ArgVec, pred);
|
||||
return ExprConstants->getOrCreate(ResultTy, Key);
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
|
||||
Constant* result = ExprConstants->getOrCreate(ResultTy, Key);
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_release();
|
||||
return result;
|
||||
}
|
||||
|
||||
Constant *ConstantExpr::getExtractElementTy(const Type *ReqTy, Constant *Val,
|
||||
@ -2482,7 +2627,10 @@ Constant *ConstantExpr::getExtractElementTy(const Type *ReqTy, Constant *Val,
|
||||
std::vector<Constant*> ArgVec(1, Val);
|
||||
ArgVec.push_back(Idx);
|
||||
const ExprMapKeyType Key(Instruction::ExtractElement,ArgVec);
|
||||
return ExprConstants->getOrCreate(ReqTy, Key);
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
|
||||
Constant* result = ExprConstants->getOrCreate(ReqTy, Key);
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_release();
|
||||
return result;
|
||||
}
|
||||
|
||||
Constant *ConstantExpr::getExtractElement(Constant *Val, Constant *Idx) {
|
||||
@ -2503,7 +2651,10 @@ Constant *ConstantExpr::getInsertElementTy(const Type *ReqTy, Constant *Val,
|
||||
ArgVec.push_back(Elt);
|
||||
ArgVec.push_back(Idx);
|
||||
const ExprMapKeyType Key(Instruction::InsertElement,ArgVec);
|
||||
return ExprConstants->getOrCreate(ReqTy, Key);
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
|
||||
Constant* result = ExprConstants->getOrCreate(ReqTy, Key);
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_release();
|
||||
return result;
|
||||
}
|
||||
|
||||
Constant *ConstantExpr::getInsertElement(Constant *Val, Constant *Elt,
|
||||
@ -2526,7 +2677,10 @@ Constant *ConstantExpr::getShuffleVectorTy(const Type *ReqTy, Constant *V1,
|
||||
ArgVec.push_back(V2);
|
||||
ArgVec.push_back(Mask);
|
||||
const ExprMapKeyType Key(Instruction::ShuffleVector,ArgVec);
|
||||
return ExprConstants->getOrCreate(ReqTy, Key);
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
|
||||
Constant* result = ExprConstants->getOrCreate(ReqTy, Key);
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_release();
|
||||
return result;
|
||||
}
|
||||
|
||||
Constant *ConstantExpr::getShuffleVector(Constant *V1, Constant *V2,
|
||||
@ -2609,7 +2763,9 @@ Constant *ConstantExpr::getZeroValueForNegationExpr(const Type *Ty) {
|
||||
// destroyConstant - Remove the constant from the constant table...
|
||||
//
|
||||
void ConstantExpr::destroyConstant() {
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
|
||||
ExprConstants->remove(this);
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_release();
|
||||
destroyConstantImpl();
|
||||
}
|
||||
|
||||
@ -2673,6 +2829,7 @@ void ConstantArray::replaceUsesOfWithOnConstant(Value *From, Value *To,
|
||||
Replacement = ConstantAggregateZero::get(getType());
|
||||
} else {
|
||||
// Check to see if we have this array type already.
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
|
||||
bool Exists;
|
||||
ArrayConstantsTy::MapTy::iterator I =
|
||||
ArrayConstants->InsertOrGetItem(Lookup, Exists);
|
||||
@ -2698,8 +2855,10 @@ void ConstantArray::replaceUsesOfWithOnConstant(Value *From, Value *To,
|
||||
if (getOperand(i) == From)
|
||||
setOperand(i, ToC);
|
||||
}
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_release();
|
||||
return;
|
||||
}
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_release();
|
||||
}
|
||||
|
||||
// Otherwise, I do need to replace this with an existing value.
|
||||
@ -2748,6 +2907,7 @@ void ConstantStruct::replaceUsesOfWithOnConstant(Value *From, Value *To,
|
||||
Replacement = ConstantAggregateZero::get(getType());
|
||||
} else {
|
||||
// Check to see if we have this array type already.
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_acquire();
|
||||
bool Exists;
|
||||
StructConstantsTy::MapTy::iterator I =
|
||||
StructConstants->InsertOrGetItem(Lookup, Exists);
|
||||
@ -2763,8 +2923,10 @@ void ConstantStruct::replaceUsesOfWithOnConstant(Value *From, Value *To,
|
||||
|
||||
// Update to the new value.
|
||||
setOperand(OperandToUpdate, ToC);
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_release();
|
||||
return;
|
||||
}
|
||||
if (llvm_is_multithreaded()) ConstantsLock->writer_release();
|
||||
}
|
||||
|
||||
assert(Replacement != this && "I didn't contain From!");
|
||||
|
||||
Loading…
Reference in New Issue
Block a user