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Delete User::dropHungOffUses and move it in to ~User which is the only caller. NFC.

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Now that the subclasses which care about hung off uses let ~User clean it up,
there's no need for a separate method.  Just inline it to ~User and delete it.

Reviewed by Duncan Exon Smith.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239491 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Pete Cooper 2015-06-10 22:38:38 +00:00
parent 0aae8ce09f
commit 0fa7dc6b36
3 changed files with 9 additions and 28 deletions
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5
include/llvm/IR/Instructions.h
View File

@ -2265,7 +2265,6 @@ public:
const Twine &NameStr, BasicBlock *InsertAtEnd) {
return new PHINode(Ty, NumReservedValues, NameStr, InsertAtEnd);
}
~PHINode() override;
/// Provide fast operand accessors
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
@ -2458,7 +2457,6 @@ public:
static LandingPadInst *Create(Type *RetTy, Value *PersonalityFn,
unsigned NumReservedClauses,
const Twine &NameStr, BasicBlock *InsertAtEnd);
~LandingPadInst() override;
/// Provide fast operand accessors
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
@ -2857,8 +2855,6 @@ public:
return new SwitchInst(Value, Default, NumCases, InsertAtEnd);
}
~SwitchInst() override;
/// Provide fast operand accessors
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
@ -3043,7 +3039,6 @@ public:
BasicBlock *InsertAtEnd) {
return new IndirectBrInst(Address, NumDests, InsertAtEnd);
}
~IndirectBrInst() override;
/// Provide fast operand accessors.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);

16
include/llvm/IR/User.h
View File

@ -58,14 +58,16 @@ protected:
/// \param IsPhi identifies callers which are phi nodes and which need
/// N BasicBlock* allocated along with N
Use *allocHungoffUses(unsigned N, bool IsPhi = false);
void dropHungoffUses() {
Use::zap(OperandList, OperandList + NumOperands, true);
OperandList = nullptr;
// Reset NumOperands so User::operator delete() does the right thing.
NumOperands = 0;
}
public:
~User() override { Use::zap(OperandList, OperandList + NumOperands); }
~User() override {
// drop the hung off uses.
Use::zap(OperandList, OperandList + NumOperands, HasHungOffUses);
if (HasHungOffUses) {
OperandList = nullptr;
// Reset NumOperands so User::operator delete() does the right thing.
NumOperands = 0;
}
}
/// \brief Free memory allocated for User and Use objects.
void operator delete(void *Usr);
/// \brief Placement delete - required by std, but never called.

16
lib/IR/Instructions.cpp
View File

@ -93,10 +93,6 @@ PHINode::PHINode(const PHINode &PN)
SubclassOptionalData = PN.SubclassOptionalData;
}
PHINode::~PHINode() {
dropHungoffUses();
}
// removeIncomingValue - Remove an incoming value. This is useful if a
// predecessor basic block is deleted.
Value *PHINode::removeIncomingValue(unsigned Idx, bool DeletePHIIfEmpty) {
@ -190,10 +186,6 @@ LandingPadInst::LandingPadInst(const LandingPadInst &LP)
setCleanup(LP.isCleanup());
}
LandingPadInst::~LandingPadInst() {
dropHungoffUses();
}
LandingPadInst *LandingPadInst::Create(Type *RetTy, Value *PersonalityFn,
unsigned NumReservedClauses,
const Twine &NameStr,
@ -3325,10 +3317,6 @@ SwitchInst::SwitchInst(const SwitchInst &SI)
SubclassOptionalData = SI.SubclassOptionalData;
}
SwitchInst::~SwitchInst() {
dropHungoffUses();
}
/// addCase - Add an entry to the switch instruction...
///
@ -3450,10 +3438,6 @@ IndirectBrInst::IndirectBrInst(const IndirectBrInst &IBI)
SubclassOptionalData = IBI.SubclassOptionalData;
}
IndirectBrInst::~IndirectBrInst() {
dropHungoffUses();
}
/// addDestination - Add a destination.
///
void IndirectBrInst::addDestination(BasicBlock *DestBB) {