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-rw-r--r--lib/Transforms/ObjCARC/ObjCARCOpts.cpp49
1 files changed, 25 insertions, 24 deletions
diff --git a/lib/Transforms/ObjCARC/ObjCARCOpts.cpp b/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
index eed3cb2..dd4dd50 100644
--- a/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
+++ b/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
@@ -24,7 +24,6 @@
///
//===----------------------------------------------------------------------===//
-#define DEBUG_TYPE "objc-arc-opts"
#include "ObjCARC.h"
#include "ARCRuntimeEntryPoints.h"
#include "DependencyAnalysis.h"
@@ -44,6 +43,8 @@
using namespace llvm;
using namespace llvm::objcarc;
+#define DEBUG_TYPE "objc-arc-opts"
+
/// \defgroup MiscUtils Miscellaneous utilities that are not ARC specific.
/// @{
@@ -156,7 +157,7 @@ static const Value *FindSingleUseIdentifiedObject(const Value *Arg) {
return FindSingleUseIdentifiedObject(
cast<CallInst>(Arg)->getArgOperand(0));
if (!IsObjCIdentifiedObject(Arg))
- return 0;
+ return nullptr;
return Arg;
}
@@ -165,12 +166,12 @@ static const Value *FindSingleUseIdentifiedObject(const Value *Arg) {
if (IsObjCIdentifiedObject(Arg)) {
for (const User *U : Arg->users())
if (!U->use_empty() || StripPointerCastsAndObjCCalls(U) != Arg)
- return 0;
+ return nullptr;
return Arg;
}
- return 0;
+ return nullptr;
}
/// This is a wrapper around getUnderlyingObjCPtr along the lines of
@@ -373,7 +374,7 @@ namespace {
bool CFGHazardAfflicted;
RRInfo() :
- KnownSafe(false), IsTailCallRelease(false), ReleaseMetadata(0),
+ KnownSafe(false), IsTailCallRelease(false), ReleaseMetadata(nullptr),
CFGHazardAfflicted(false) {}
void clear();
@@ -388,7 +389,7 @@ namespace {
void RRInfo::clear() {
KnownSafe = false;
IsTailCallRelease = false;
- ReleaseMetadata = 0;
+ ReleaseMetadata = nullptr;
Calls.clear();
ReverseInsertPts.clear();
CFGHazardAfflicted = false;
@@ -397,7 +398,7 @@ void RRInfo::clear() {
bool RRInfo::Merge(const RRInfo &Other) {
// Conservatively merge the ReleaseMetadata information.
if (ReleaseMetadata != Other.ReleaseMetadata)
- ReleaseMetadata = 0;
+ ReleaseMetadata = nullptr;
// Conservatively merge the boolean state.
KnownSafe &= Other.KnownSafe;
@@ -456,7 +457,7 @@ namespace {
}
bool IsTrackingImpreciseReleases() const {
- return RRI.ReleaseMetadata != 0;
+ return RRI.ReleaseMetadata != nullptr;
}
const MDNode *GetReleaseMetadata() const {
@@ -818,7 +819,7 @@ ARCAnnotationTargetIdentifier("objc-arc-annotation-target-identifier",
/// arc annotation processor tool. If the function is an
static MDString *AppendMDNodeToSourcePtr(unsigned NodeId,
Value *Ptr) {
- MDString *Hash = 0;
+ MDString *Hash = nullptr;
// If pointer is a result of an instruction and it does not have a source
// MDNode it, attach a new MDNode onto it. If pointer is a result of
@@ -880,7 +881,7 @@ static void AppendMDNodeToInstForPtr(unsigned NodeId,
MDString *PtrSourceMDNodeID,
Sequence OldSeq,
Sequence NewSeq) {
- MDNode *Node = 0;
+ MDNode *Node = nullptr;
Value *tmp[3] = {PtrSourceMDNodeID,
SequenceToMDString(Inst->getContext(),
OldSeq),
@@ -916,7 +917,7 @@ static void GenerateARCBBEntranceAnnotation(const char *Name, BasicBlock *BB,
Value *PtrName;
StringRef Tmp = Ptr->getName();
- if (0 == (PtrName = M->getGlobalVariable(Tmp, true))) {
+ if (nullptr == (PtrName = M->getGlobalVariable(Tmp, true))) {
Value *ActualPtrName = Builder.CreateGlobalStringPtr(Tmp,
Tmp + "_STR");
PtrName = new GlobalVariable(*M, I8X, true, GlobalVariable::InternalLinkage,
@@ -925,7 +926,7 @@ static void GenerateARCBBEntranceAnnotation(const char *Name, BasicBlock *BB,
Value *S;
std::string SeqStr = SequenceToString(Seq);
- if (0 == (S = M->getGlobalVariable(SeqStr, true))) {
+ if (nullptr == (S = M->getGlobalVariable(SeqStr, true))) {
Value *ActualPtrName = Builder.CreateGlobalStringPtr(SeqStr,
SeqStr + "_STR");
S = new GlobalVariable(*M, I8X, true, GlobalVariable::InternalLinkage,
@@ -959,7 +960,7 @@ static void GenerateARCBBTerminatorAnnotation(const char *Name, BasicBlock *BB,
Value *PtrName;
StringRef Tmp = Ptr->getName();
- if (0 == (PtrName = M->getGlobalVariable(Tmp, true))) {
+ if (nullptr == (PtrName = M->getGlobalVariable(Tmp, true))) {
Value *ActualPtrName = Builder.CreateGlobalStringPtr(Tmp,
Tmp + "_STR");
PtrName = new GlobalVariable(*M, I8X, true, GlobalVariable::InternalLinkage,
@@ -968,7 +969,7 @@ static void GenerateARCBBTerminatorAnnotation(const char *Name, BasicBlock *BB,
Value *S;
std::string SeqStr = SequenceToString(Seq);
- if (0 == (S = M->getGlobalVariable(SeqStr, true))) {
+ if (nullptr == (S = M->getGlobalVariable(SeqStr, true))) {
Value *ActualPtrName = Builder.CreateGlobalStringPtr(SeqStr,
SeqStr + "_STR");
S = new GlobalVariable(*M, I8X, true, GlobalVariable::InternalLinkage,
@@ -1718,7 +1719,7 @@ ObjCARCOpt::VisitInstructionBottomUp(Instruction *Inst,
BBState &MyStates) {
bool NestingDetected = false;
InstructionClass Class = GetInstructionClass(Inst);
- const Value *Arg = 0;
+ const Value *Arg = nullptr;
DEBUG(dbgs() << "Class: " << Class << "\n");
@@ -1974,7 +1975,7 @@ ObjCARCOpt::VisitInstructionTopDown(Instruction *Inst,
BBState &MyStates) {
bool NestingDetected = false;
InstructionClass Class = GetInstructionClass(Inst);
- const Value *Arg = 0;
+ const Value *Arg = nullptr;
switch (Class) {
case IC_RetainBlock:
@@ -2026,7 +2027,7 @@ ObjCARCOpt::VisitInstructionTopDown(Instruction *Inst,
switch (OldSeq) {
case S_Retain:
case S_CanRelease:
- if (OldSeq == S_Retain || ReleaseMetadata != 0)
+ if (OldSeq == S_Retain || ReleaseMetadata != nullptr)
S.ClearReverseInsertPts();
// FALL THROUGH
case S_Use:
@@ -2432,7 +2433,7 @@ ObjCARCOpt::ConnectTDBUTraversals(DenseMap<const BasicBlock *, BBState>
} else {
if (ReleasesToMove.ReleaseMetadata !=
NewRetainReleaseRRI.ReleaseMetadata)
- ReleasesToMove.ReleaseMetadata = 0;
+ ReleasesToMove.ReleaseMetadata = nullptr;
if (ReleasesToMove.IsTailCallRelease !=
NewRetainReleaseRRI.IsTailCallRelease)
ReleasesToMove.IsTailCallRelease = false;
@@ -2884,7 +2885,7 @@ FindPredecessorRetainWithSafePath(const Value *Arg, BasicBlock *BB,
FindDependencies(CanChangeRetainCount, Arg,
BB, Autorelease, DepInsts, Visited, PA);
if (DepInsts.size() != 1)
- return 0;
+ return nullptr;
CallInst *Retain =
dyn_cast_or_null<CallInst>(*DepInsts.begin());
@@ -2893,7 +2894,7 @@ FindPredecessorRetainWithSafePath(const Value *Arg, BasicBlock *BB,
if (!Retain ||
!IsRetain(GetBasicInstructionClass(Retain)) ||
GetObjCArg(Retain) != Arg) {
- return 0;
+ return nullptr;
}
return Retain;
@@ -2911,17 +2912,17 @@ FindPredecessorAutoreleaseWithSafePath(const Value *Arg, BasicBlock *BB,
FindDependencies(NeedsPositiveRetainCount, Arg,
BB, Ret, DepInsts, V, PA);
if (DepInsts.size() != 1)
- return 0;
+ return nullptr;
CallInst *Autorelease =
dyn_cast_or_null<CallInst>(*DepInsts.begin());
if (!Autorelease)
- return 0;
+ return nullptr;
InstructionClass AutoreleaseClass = GetBasicInstructionClass(Autorelease);
if (!IsAutorelease(AutoreleaseClass))
- return 0;
+ return nullptr;
if (GetObjCArg(Autorelease) != Arg)
- return 0;
+ return nullptr;
return Autorelease;
}
generated by cgit v1.1 at 2024-05-18 01:33:25 +0000