[C++] Use 'nullptr'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207083 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 22 insertions, 22 deletions

diff --git a/lib/ExecutionEngine/RuntimeDyld/GDBRegistrar.cpp b/lib/ExecutionEngine/RuntimeDyld/GDBRegistrar.cpp
index 1d0e9b3f92..8546571587 100644
--- a/lib/ExecutionEngine/RuntimeDyld/GDBRegistrar.cpp
+++ b/lib/ExecutionEngine/RuntimeDyld/GDBRegistrar.cpp
@@ -45,7 +45,7 @@ extern "C" {
   // We put information about the JITed function in this global, which the
   // debugger reads.  Make sure to specify the version statically, because the
   // debugger checks the version before we can set it during runtime.
-  struct jit_descriptor __jit_debug_descriptor = { 1, 0, 0, 0 };
+  struct jit_descriptor __jit_debug_descriptor = { 1, 0, nullptr, nullptr };
 
   // Debuggers puts a breakpoint in this function.
   LLVM_ATTRIBUTE_NOINLINE void __jit_debug_register_code() {
@@ -108,10 +108,10 @@ void NotifyDebugger(jit_code_entry* JITCodeEntry) {
   __jit_debug_descriptor.action_flag = JIT_REGISTER_FN;
 
   // Insert this entry at the head of the list.
-  JITCodeEntry->prev_entry = NULL;
+  JITCodeEntry->prev_entry = nullptr;
   jit_code_entry* NextEntry = __jit_debug_descriptor.first_entry;
   JITCodeEntry->next_entry = NextEntry;
-  if (NextEntry != NULL) {
+  if (NextEntry) {
     NextEntry->prev_entry = JITCodeEntry;
   }
   __jit_debug_descriptor.first_entry = JITCodeEntry;
@@ -142,11 +142,10 @@ void GDBJITRegistrar::registerObject(const ObjectBuffer &Object) {
          "Second attempt to perform debug registration.");
   jit_code_entry* JITCodeEntry = new jit_code_entry();
 
-  if (JITCodeEntry == 0) {
+  if (!JITCodeEntry) {
     llvm::report_fatal_error(
       "Allocation failed when registering a JIT entry!\n");
-  }
-  else {
+  } else {
     JITCodeEntry->symfile_addr = Buffer;
     JITCodeEntry->symfile_size = Size;
 
@@ -198,7 +197,7 @@ void GDBJITRegistrar::deregisterObjectInternal(
   }
 
   delete JITCodeEntry;
-  JITCodeEntry = NULL;
+  JITCodeEntry = nullptr;
 }
 
 llvm::ManagedStatic<GDBJITRegistrar> TheRegistrar;
diff --git a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
index 65b544dcaf..cc2f29d9df 100644
--- a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
+++ b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
@@ -106,7 +106,7 @@ ObjectImage *RuntimeDyldImpl::loadObject(ObjectImage *InputObject) {
 
   std::unique_ptr<ObjectImage> Obj(InputObject);
   if (!Obj)
-    return NULL;
+    return nullptr;
 
   // Save information about our target
   Arch = (Triple::ArchType)Obj->getArch();
@@ -426,7 +426,7 @@ unsigned RuntimeDyldImpl::emitSection(ObjectImage &Obj,
   uintptr_t Allocate;
   unsigned SectionID = Sections.size();
   uint8_t *Addr;
-  const char *pData = 0;
+  const char *pData = nullptr;
 
   // Some sections, such as debug info, don't need to be loaded for execution.
   // Leave those where they are.
@@ -467,7 +467,7 @@ unsigned RuntimeDyldImpl::emitSection(ObjectImage &Obj,
     // to handle later processing (and by 'handle' I mean don't do anything
     // with these sections).
     Allocate = 0;
-    Addr = 0;
+    Addr = nullptr;
     DEBUG(dbgs() << "emitSection SectionID: " << SectionID << " Name: " << Name
                  << " obj addr: " << format("%p", data.data()) << " new addr: 0"
                  << " DataSize: " << DataSize << " StubBufSize: " << StubBufSize
@@ -612,7 +612,7 @@ void RuntimeDyldImpl::resolveRelocationList(const RelocationList &Relocs,
   for (unsigned i = 0, e = Relocs.size(); i != e; ++i) {
     const RelocationEntry &RE = Relocs[i];
     // Ignore relocations for sections that were not loaded
-    if (Sections[RE.SectionID].Address == 0)
+    if (Sections[RE.SectionID].Address == nullptr)
       continue;
     resolveRelocation(RE, Value);
   }
@@ -677,7 +677,7 @@ RuntimeDyld::RuntimeDyld(RTDyldMemoryManager *mm) {
   // though the public class spawns a new 'impl' instance for each load,
   // they share a single memory manager.  This can become a problem when page
   // permissions are applied.
-  Dyld = 0;
+  Dyld = nullptr;
   MM = mm;
   ProcessAllSections = false;
 }
@@ -766,7 +766,7 @@ ObjectImage *RuntimeDyld::loadObject(ObjectBuffer *InputBuffer) {
 
 void *RuntimeDyld::getSymbolAddress(StringRef Name) {
   if (!Dyld)
-    return NULL;
+    return nullptr;
   return Dyld->getSymbolAddress(Name);
 }
 
diff --git a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
index 434a1adf4f..abe8b6c388 100644
--- a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
+++ b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
@@ -167,7 +167,7 @@ void RuntimeDyldELF::deregisterEHFrames() {
 ObjectImage *
 RuntimeDyldELF::createObjectImageFromFile(object::ObjectFile *ObjFile) {
   if (!ObjFile)
-    return NULL;
+    return nullptr;
 
   error_code ec;
   MemoryBuffer *Buffer =
@@ -176,19 +176,19 @@ RuntimeDyldELF::createObjectImageFromFile(object::ObjectFile *ObjFile) {
   if (ObjFile->getBytesInAddress() == 4 && ObjFile->isLittleEndian()) {
     DyldELFObject<ELFType<support::little, 2, false>> *Obj =
         new DyldELFObject<ELFType<support::little, 2, false>>(Buffer, ec);
-    return new ELFObjectImage<ELFType<support::little, 2, false>>(NULL, Obj);
+    return new ELFObjectImage<ELFType<support::little, 2, false>>(nullptr, Obj);
   } else if (ObjFile->getBytesInAddress() == 4 && !ObjFile->isLittleEndian()) {
     DyldELFObject<ELFType<support::big, 2, false>> *Obj =
         new DyldELFObject<ELFType<support::big, 2, false>>(Buffer, ec);
-    return new ELFObjectImage<ELFType<support::big, 2, false>>(NULL, Obj);
+    return new ELFObjectImage<ELFType<support::big, 2, false>>(nullptr, Obj);
   } else if (ObjFile->getBytesInAddress() == 8 && !ObjFile->isLittleEndian()) {
     DyldELFObject<ELFType<support::big, 2, true>> *Obj =
         new DyldELFObject<ELFType<support::big, 2, true>>(Buffer, ec);
-    return new ELFObjectImage<ELFType<support::big, 2, true>>(NULL, Obj);
+    return new ELFObjectImage<ELFType<support::big, 2, true>>(nullptr, Obj);
   } else if (ObjFile->getBytesInAddress() == 8 && ObjFile->isLittleEndian()) {
     DyldELFObject<ELFType<support::little, 2, true>> *Obj =
         new DyldELFObject<ELFType<support::little, 2, true>>(Buffer, ec);
-    return new ELFObjectImage<ELFType<support::little, 2, true>>(NULL, Obj);
+    return new ELFObjectImage<ELFType<support::little, 2, true>>(nullptr, Obj);
   } else
     llvm_unreachable("Unexpected ELF format");
 }
@@ -1152,7 +1152,7 @@ relocation_iterator RuntimeDyldELF::processRelocationRef(
       // Extra check to avoid relocation againt empty symbols (usually
       // the R_PPC64_TOC).
       if (SymType != SymbolRef::ST_Unknown && TargetName.empty())
-        Value.SymbolName = NULL;
+        Value.SymbolName = nullptr;
 
       if (Value.SymbolName)
         addRelocationForSymbol(RE, Value.SymbolName);
@@ -1284,7 +1284,8 @@ void RuntimeDyldELF::updateGOTEntries(StringRef Name, uint64_t Addr) {
   for (it = GOTs.begin(); it != end; ++it) {
     GOTRelocations &GOTEntries = it->second;
     for (int i = 0, e = GOTEntries.size(); i != e; ++i) {
-      if (GOTEntries[i].SymbolName != 0 && GOTEntries[i].SymbolName == Name) {
+      if (GOTEntries[i].SymbolName != nullptr &&
+          GOTEntries[i].SymbolName == Name) {
         GOTEntries[i].Offset = Addr;
       }
     }
@@ -1332,7 +1333,7 @@ uint64_t RuntimeDyldELF::findGOTEntry(uint64_t LoadAddress, uint64_t Offset) {
     // Find the matching entry in our vector.
     uint64_t SymbolOffset = 0;
     for (int i = 0, e = GOTEntries.size(); i != e; ++i) {
-      if (GOTEntries[i].SymbolName == 0) {
+      if (!GOTEntries[i].SymbolName) {
         if (getSectionLoadAddress(GOTEntries[i].SectionID) == LoadAddress &&
             GOTEntries[i].Offset == Offset) {
           GOTIndex = i;
diff --git a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.cpp b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.cpp
index 999e8f3261..d91c9bcd0e 100644
--- a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.cpp
+++ b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldMachO.cpp
@@ -67,7 +67,7 @@ void RuntimeDyldMachO::registerEHFrames() {
       continue;
     SectionEntry *Text = &Sections[SectionInfo.TextSID];
     SectionEntry *EHFrame = &Sections[SectionInfo.EHFrameSID];
-    SectionEntry *ExceptTab = NULL;
+    SectionEntry *ExceptTab = nullptr;
     if (SectionInfo.ExceptTabSID != RTDYLD_INVALID_SECTION_ID)
       ExceptTab = &Sections[SectionInfo.ExceptTabSID];