Use true/false instead of 1/0 (NFC)

Identified by modernize-use-bool-literals.

(cherry picked from commit 8afcfbf)
(cherry picked from commit 59679eeef2d471dc0c2bccb966aac5eae9195802)

Author: kazutakahirata

clang-tools-extra/clangd/refactor/Rename.cpp

@@ -906,7 +906,7 @@ llvm::Optional<std::vector<Range>> getMappedRanges(ArrayRef<Range> Indexed,
 
   std::vector<size_t> Best;
   size_t BestCost = std::numeric_limits<size_t>::max();
-  bool HasMultiple = 0;
+  bool HasMultiple = false;
   std::vector<size_t> ResultStorage;
   int Fuel = 10000;
   findNearMiss(ResultStorage, Indexed, Lexed, 0, Fuel,

lld/COFF/Writer.cpp

@@ -1240,7 +1240,7 @@ void Writer::mergeSections() {
     if (p.first == toName)
       continue;
     StringSet<> names;
-    while (1) {
+    while (true) {
       if (!names.insert(toName).second)
         fatal("/merge: cycle found for section '" + p.first + "'");
       auto i = config->merge.find(toName);

lld/ELF/Arch/X86_64.cpp

@@ -278,12 +278,12 @@ bool X86_64::deleteFallThruJmpInsn(InputSection &is, InputFile *file,
   const unsigned sizeOfJmpCCInsn = 6;
   // To flip, there must be atleast one JmpCC and one direct jmp.
   if (is.getSize() < sizeOfDirectJmpInsn + sizeOfJmpCCInsn)
-    return 0;
+    return false;
 
   unsigned rbIndex =
       getRelocationWithOffset(is, (is.getSize() - sizeOfDirectJmpInsn - 4));
   if (rbIndex == is.relocations.size())
-    return 0;
+    return false;
 
   Relocation &rB = is.relocations[rbIndex];
 

lld/MachO/Arch/ARM.cpp

@@ -116,7 +116,7 @@ void ARM::relocateOne(uint8_t *loc, const Reloc &r, uint64_t value,
         return;
       } else if (isBlx && !defined->thumb) {
         Bitfield::set<Cond>(base, 0xe); // unconditional BL
-        Bitfield::set<BitfieldFlag<24>>(base, 1);
+        Bitfield::set<BitfieldFlag<24>>(base, true);
         isBlx = false;
       }
     } else {

lld/MachO/InputSection.h

@@ -233,7 +233,9 @@ class WordLiteralInputSection final : public InputSection {
   bool isLive(uint64_t off) const override {
     return live[off >> power2LiteralSize];
   }
-  void markLive(uint64_t off) override { live[off >> power2LiteralSize] = 1; }
+  void markLive(uint64_t off) override {
+    live[off >> power2LiteralSize] = true;
+  }
 
   static bool classof(const InputSection *isec) {
     return isec->kind() == WordLiteralKind;

lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCTrampolineHandler.cpp

@@ -890,8 +890,8 @@ AppleObjCTrampolineHandler::GetStepThroughDispatchPlan(Thread &thread,
   ThreadPlanSP ret_plan_sp;
   lldb::addr_t curr_pc = thread.GetRegisterContext()->GetPC();
 
-  DispatchFunction vtable_dispatch
-      = {"vtable", 0, false, false, DispatchFunction::eFixUpFixed};
+  DispatchFunction vtable_dispatch = {"vtable", false, false, false,
+                                      DispatchFunction::eFixUpFixed};
 
   // First step is to look and see if we are in one of the known ObjC
   // dispatch functions.  We've already compiled a table of same, so

lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp

@@ -5209,7 +5209,7 @@ void ObjectFileMachO::GetAllArchSpecs(const llvm::MachO::mach_header &header,
           triple.setEnvironmentName(os_env.environment);
         add_triple(triple);
       }
-    } while (0);
+    } while (false);
     offset = cmd_offset + load_cmd.cmdsize;
   }
 

lldb/source/Symbol/TypeSystem.cpp

@@ -23,7 +23,7 @@ using namespace lldb;
 static const size_t g_num_small_bitvector_bits = 64 - 8;
 static_assert(eNumLanguageTypes < g_num_small_bitvector_bits,
               "Languages bit vector is no longer small on 64 bit systems");
-LanguageSet::LanguageSet() : bitvector(eNumLanguageTypes, 0) {}
+LanguageSet::LanguageSet() : bitvector(eNumLanguageTypes, false) {}
 
 llvm::Optional<LanguageType> LanguageSet::GetSingularLanguage() {
   if (bitvector.count() == 1)

lldb/source/Target/TraceInstructionDumper.cpp

@@ -149,7 +149,8 @@ static void DumpInstructionDisassembly(Stream &s, InstructionSymbolInfo &insn) {
     return;
   s.Printf("    ");
   insn.instruction->Dump(&s, /*show_address=*/false, /*show_bytes=*/false,
-                         /*max_opcode_byte_size=*/0, &insn.exe_ctx, &insn.sc,
+                         /*max_opcode_byte_size=*/false, &insn.exe_ctx,
+                         &insn.sc,
                          /*prev_sym_ctx=*/nullptr,
                          /*disassembly_addr_format=*/nullptr,
                          /*max_address_text_size=*/0);

polly/lib/Analysis/ScopDetection.cpp

@@ -1166,7 +1166,7 @@ bool ScopDetection::isValidAccess(Instruction *Inst, const SCEV *AF,
       // as invariant, we use fixed-point iteration method here i.e we iterate
       // over the alias set for arbitrary number of times until it is safe to
       // assume that all the invariant loads have been detected
-      while (1) {
+      while (true) {
         const unsigned int VariantSize = VariantLS.size(),
                            InvariantSize = InvariantLS.size();
 

polly/lib/CodeGen/PerfMonitor.cpp

@@ -103,7 +103,7 @@ void PerfMonitor::addGlobalVariables() {
   TryRegisterGlobal(M, "__polly_perf_cycles_total_start", Builder.getInt64(0),
                     &CyclesTotalStartPtr);
 
-  TryRegisterGlobal(M, "__polly_perf_initialized", Builder.getInt1(0),
+  TryRegisterGlobal(M, "__polly_perf_initialized", Builder.getInt1(false),
                     &AlreadyInitializedPtr);
 
   TryRegisterGlobal(M, "__polly_perf_cycles_in_scops", Builder.getInt64(0),