[llvm] Use llvm::iterator_range::empty (NFC)

llvm/lib/DebugInfo/DWARF/DWARFContext.cpp

@@ -2260,7 +2260,7 @@ class DWARFObjInMemory final : public DWARFObject {
           continue;
       }
 
-      if (Section.relocation_begin() == Section.relocation_end())
+      if (Section.relocations().empty())
         continue;
 
       // Symbol to [address, section index] cache mapping.

llvm/lib/ExecutionEngine/JITLink/MachO_arm64.cpp

@@ -261,7 +261,7 @@ class MachOLinkGraphBuilder_arm64 : public MachOLinkGraphBuilder {
 
       // Skip relocations virtual sections.
       if (S.isVirtual()) {
-        if (S.relocation_begin() != S.relocation_end())
+        if (!S.relocations().empty())
           return make_error<JITLinkError>("Virtual section contains "
                                           "relocations");
         continue;

llvm/lib/ExecutionEngine/JITLink/MachO_x86_64.cpp

@@ -236,7 +236,7 @@ class MachOLinkGraphBuilder_x86_64 : public MachOLinkGraphBuilder {
 
       // Skip relocations virtual sections.
       if (S.isVirtual()) {
-        if (S.relocation_begin() != S.relocation_end())
+        if (!S.relocations().empty())
           return make_error<JITLinkError>("Virtual section contains "
                                           "relocations");
         continue;

llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp

@@ -2822,7 +2822,7 @@ Error RuntimeDyldELF::finalizeLoad(const ObjectFile &Obj,
       // object's sections to GOTs.
       for (section_iterator SI = Obj.section_begin(), SE = Obj.section_end();
            SI != SE; ++SI) {
-        if (SI->relocation_begin() != SI->relocation_end()) {
+        if (!SI->relocations().empty()) {
           Expected<section_iterator> RelSecOrErr = SI->getRelocatedSection();
           if (!RelSecOrErr)
             return make_error<RuntimeDyldError>(

llvm/lib/SandboxIR/Value.cpp

@@ -22,7 +22,7 @@ Value::Value(ClassID SubclassID, llvm::Value *Val, Context &Ctx)
 
 Value::use_iterator Value::use_begin() {
   llvm::Use *LLVMUse = nullptr;
-  if (Val->use_begin() != Val->use_end())
+  if (!Val->uses().empty())
     LLVMUse = &*Val->use_begin();
   User *User = LLVMUse != nullptr ? cast_or_null<sandboxir::User>(Ctx.getValue(
                                         Val->use_begin()->getUser()))

llvm/lib/Target/DirectX/DXContainerGlobals.cpp

@@ -103,7 +103,7 @@ GlobalVariable *DXContainerGlobals::computeShaderHash(Module &M) {
   dxbc::ShaderHash HashData = {0, {0}};
   // The Hash's IncludesSource flag gets set whenever the hashed shader includes
   // debug information.
-  if (M.debug_compile_units_begin() != M.debug_compile_units_end())
+  if (!M.debug_compile_units().empty())
     HashData.Flags = static_cast<uint32_t>(dxbc::HashFlags::IncludesSource);
 
   memcpy(reinterpret_cast<void *>(&HashData.Digest), Result.data(), 16);

llvm/lib/Target/Hexagon/HexagonCommonGEP.cpp

@@ -330,7 +330,7 @@ bool HexagonCommonGEP::isHandledGepForm(GetElementPtrInst *GepI) {
   if (!GepI->getType()->isPointerTy())
     return false;
   // No GEPs without any indices.  (Is this possible?)
-  if (GepI->idx_begin() == GepI->idx_end())
+  if (GepI->indices().empty())
     return false;
   return true;
 }

llvm/lib/Transforms/Utils/PredicateInfo.cpp

@@ -721,7 +721,7 @@ PredicateInfo::~PredicateInfo() {
   CreatedDeclarations.clear();
 
   for (Function *F : FunctionPtrs) {
-    assert(F->user_begin() == F->user_end() &&
+    assert(F->users().empty() &&
            "PredicateInfo consumer did not remove all SSA copies.");
     F->eraseFromParent();
   }

llvm/tools/llvm-objdump/llvm-objdump.cpp

@@ -2736,7 +2736,7 @@ void Dumper::printRelocations() {
   for (const SectionRef &Section : ToolSectionFilter(O, &Ndx)) {
     if (O.isELF() && (ELFSectionRef(Section).getFlags() & ELF::SHF_ALLOC))
       continue;
-    if (Section.relocation_begin() == Section.relocation_end())
+    if (Section.relocations().empty())
       continue;
     Expected<section_iterator> SecOrErr = Section.getRelocatedSection();
     if (!SecOrErr)