vendor/lldb/lldb-trunk-r291274

26 files changed, 120 insertions, 121 deletions

diff --git a/source/Core/DataEncoder.cpp b/source/Core/DataEncoder.cpp
index dd6adc0a8688..334043651576 100644
--- a/source/Core/DataEncoder.cpp
+++ b/source/Core/DataEncoder.cpp
@@ -258,8 +258,7 @@ uint32_t DataEncoder::PutMaxU64(uint32_t offset, uint32_t byte_size,
   case 8:
     return PutU64(offset, value);
   default:
-    assert(!"GetMax64 unhandled case!");
-    break;
+    llvm_unreachable("GetMax64 unhandled case!");
   }
   return UINT32_MAX;
 }
diff --git a/source/Core/ValueObjectMemory.cpp b/source/Core/ValueObjectMemory.cpp
index 86747b84522b..18f3c94c522b 100644
--- a/source/Core/ValueObjectMemory.cpp
+++ b/source/Core/ValueObjectMemory.cpp
@@ -165,8 +165,7 @@ bool ValueObjectMemory::UpdateValue() {
 
     switch (value_type) {
     default:
-      assert(!"Unhandled expression result value kind...");
-      break;
+      llvm_unreachable("Unhandled expression result value kind...");
 
     case Value::eValueTypeScalar:
       // The variable value is in the Scalar value inside the m_value.
diff --git a/source/Expression/IRInterpreter.cpp b/source/Expression/IRInterpreter.cpp
index ef96b85971be..e5705984eb87 100644
--- a/source/Expression/IRInterpreter.cpp
+++ b/source/Expression/IRInterpreter.cpp
@@ -1602,25 +1602,23 @@ bool IRInterpreter::Interpret(llvm::Module &module, llvm::Function &function,
           lldb::addr_t addr = tmp_op.ULongLong();
           size_t dataSize = 0;
 
-          if (execution_unit.GetAllocSize(addr, dataSize)) {
-            // Create the required buffer
-            rawArgs[i].size = dataSize;
-            rawArgs[i].data_ap.reset(new uint8_t[dataSize + 1]);
-
-            // Read string from host memory
-            execution_unit.ReadMemory(rawArgs[i].data_ap.get(), addr, dataSize,
-                                      error);
-            if (error.Fail()) {
-              assert(!"we have failed to read the string from memory");
-              return false;
-            }
-            // Add null terminator
-            rawArgs[i].data_ap[dataSize] = '\0';
-            rawArgs[i].type = lldb_private::ABI::CallArgument::HostPointer;
-          } else {
-            assert(!"unable to locate host data for transfer to device");
-            return false;
-          }
+          bool Success = execution_unit.GetAllocSize(addr, dataSize);
+          (void)Success;
+          assert(Success &&
+                 "unable to locate host data for transfer to device");
+          // Create the required buffer
+          rawArgs[i].size = dataSize;
+          rawArgs[i].data_ap.reset(new uint8_t[dataSize + 1]);
+
+          // Read string from host memory
+          execution_unit.ReadMemory(rawArgs[i].data_ap.get(), addr, dataSize,
+                                    error);
+          assert(!error.Fail() &&
+                 "we have failed to read the string from memory");
+
+          // Add null terminator
+          rawArgs[i].data_ap[dataSize] = '\0';
+          rawArgs[i].type = lldb_private::ABI::CallArgument::HostPointer;
         } else /* if ( arg_ty->isPointerTy() ) */
         {
           rawArgs[i].type = lldb_private::ABI::CallArgument::TargetValue;
diff --git a/source/Expression/IRMemoryMap.cpp b/source/Expression/IRMemoryMap.cpp
index 008838d5aab3..7b9d26667389 100644
--- a/source/Expression/IRMemoryMap.cpp
+++ b/source/Expression/IRMemoryMap.cpp
@@ -126,7 +126,7 @@ lldb::addr_t IRMemoryMap::FindSpace(size_t size) {
         err = process_sp->GetMemoryRegionInfo(
             region_info.GetRange().GetRangeEnd(), region_info);
         if (err.Fail()) {
-          lldbassert(!"GetMemoryRegionInfo() succeeded, then failed");
+          lldbassert(0 && "GetMemoryRegionInfo() succeeded, then failed");
           ret = LLDB_INVALID_ADDRESS;
           break;
         }
diff --git a/source/Host/common/Editline.cpp b/source/Host/common/Editline.cpp
index a600c61c8e6b..1c5c0ffe902b 100644
--- a/source/Host/common/Editline.cpp
+++ b/source/Host/common/Editline.cpp
@@ -526,17 +526,8 @@ int Editline::GetCharacter(EditLineCharType *c) {
     }
 
     if (read_count) {
-#if LLDB_EDITLINE_USE_WCHAR
-      // After the initial interruptible read, this is guaranteed not to block
-      ungetc(ch, m_input_file);
-      *c = fgetwc(m_input_file);
-      if (*c != WEOF)
-        return 1;
-#else
-      *c = ch;
-      if (ch != (char)EOF)
+      if (CompleteCharacter(ch, *c))
         return 1;
-#endif
     } else {
       switch (status) {
       case lldb::eConnectionStatusSuccess: // Success
@@ -1367,3 +1358,39 @@ void Editline::PrintAsync(Stream *stream, const char *s, size_t len) {
     MoveCursor(CursorLocation::BlockEnd, CursorLocation::EditingCursor);
   }
 }
+
+bool Editline::CompleteCharacter(char ch, EditLineCharType &out) {
+#if !LLDB_EDITLINE_USE_WCHAR
+  if (ch == (char)EOF)
+    return false;
+
+  out = ch;
+  return true;
+#else
+  std::codecvt_utf8<wchar_t> cvt;
+  llvm::SmallString<4> input;
+  for (;;) {
+    const char *from_next;
+    wchar_t *to_next;
+    std::mbstate_t state = std::mbstate_t();
+    input.push_back(ch);
+    switch (cvt.in(state, input.begin(), input.end(), from_next, &out, &out + 1,
+                   to_next)) {
+    case std::codecvt_base::ok:
+      return out != WEOF;
+
+    case std::codecvt_base::error:
+    case std::codecvt_base::noconv:
+      return false;
+
+    case std::codecvt_base::partial:
+      lldb::ConnectionStatus status;
+      size_t read_count = m_input_connection.Read(
+          &ch, 1, std::chrono::seconds(0), status, nullptr);
+      if (read_count == 0)
+        return false;
+      break;
+    }
+  }
+#endif
+}
diff --git a/source/Host/windows/EditLineWin.cpp b/source/Host/windows/EditLineWin.cpp
index 124104b00067..133cd6225467 100644
--- a/source/Host/windows/EditLineWin.cpp
+++ b/source/Host/windows/EditLineWin.cpp
@@ -13,6 +13,7 @@
 #include "lldb/Host/windows/windows.h"
 
 #include "lldb/Host/windows/editlinewin.h"
+#include "llvm/Support/ErrorHandling.h"
 #include <assert.h>
 #include <vector>
 
@@ -285,11 +286,10 @@ void el_end(EditLine *el) {
   // assert( !"Not implemented!" );
 }
 
-void el_reset(EditLine *) { assert(!"Not implemented!"); }
+void el_reset(EditLine *) { llvm_unreachable("Not implemented!"); }
 
 int el_getc(EditLine *, char *) {
-  assert(!"Not implemented!");
-  return 0;
+  llvm_unreachable("Not implemented!");
 }
 
 void el_push(EditLine *, const char *) {}
@@ -297,8 +297,7 @@ void el_push(EditLine *, const char *) {}
 void el_beep(EditLine *) { Beep(1000, 500); }
 
 int el_parse(EditLine *, int, const char **) {
-  assert(!"Not implemented!");
-  return 0;
+  llvm_unreachable("Not implemented!");
 }
 
 int el_get(EditLine *el, int code, ...) {
@@ -311,7 +310,7 @@ int el_get(EditLine *el, int code, ...) {
     *dout = clientData;
   } break;
   default:
-    assert(!"Not implemented!");
+    llvm_unreachable("Not implemented!");
   }
   return 0;
 }
@@ -322,7 +321,7 @@ int el_source(EditLine *el, const char *file) {
   return 0;
 }
 
-void el_resize(EditLine *) { assert(!"Not implemented!"); }
+void el_resize(EditLine *) { llvm_unreachable("Not implemented!"); }
 
 const LineInfo *el_line(EditLine *el) { return 0; }
 
@@ -331,7 +330,7 @@ int el_insertstr(EditLine *, const char *) {
   return 0;
 }
 
-void el_deletestr(EditLine *, int) { assert(!"Not implemented!"); }
+void el_deletestr(EditLine *, int) { llvm_unreachable("Not implemented!"); }
 
 History *history_init(void) {
   // return dummy handle
diff --git a/source/Interpreter/OptionValueProperties.cpp b/source/Interpreter/OptionValueProperties.cpp
index 9a621bea8355..7e4df3a3e1d2 100644
--- a/source/Interpreter/OptionValueProperties.cpp
+++ b/source/Interpreter/OptionValueProperties.cpp
@@ -584,8 +584,7 @@ Error OptionValueProperties::DumpPropertyValue(const ExecutionContext *exe_ctx,
 }
 
 lldb::OptionValueSP OptionValueProperties::DeepCopy() const {
-  assert(!"this shouldn't happen");
-  return lldb::OptionValueSP();
+  llvm_unreachable("this shouldn't happen");
 }
 
 const Property *OptionValueProperties::GetPropertyAtPath(
diff --git a/source/Plugins/ExpressionParser/Clang/ClangModulesDeclVendor.cpp b/source/Plugins/ExpressionParser/Clang/ClangModulesDeclVendor.cpp
index c542b36b674f..64b303c4f735 100644
--- a/source/Plugins/ExpressionParser/Clang/ClangModulesDeclVendor.cpp
+++ b/source/Plugins/ExpressionParser/Clang/ClangModulesDeclVendor.cpp
@@ -64,10 +64,10 @@ private:
 class ClangModulesDeclVendorImpl : public ClangModulesDeclVendor {
 public:
   ClangModulesDeclVendorImpl(
-      llvm::IntrusiveRefCntPtr<clang::DiagnosticsEngine> &diagnostics_engine,
-      llvm::IntrusiveRefCntPtr<clang::CompilerInvocation> &compiler_invocation,
-      std::unique_ptr<clang::CompilerInstance> &&compiler_instance,
-      std::unique_ptr<clang::Parser> &&parser);
+      llvm::IntrusiveRefCntPtr<clang::DiagnosticsEngine> diagnostics_engine,
+      std::shared_ptr<clang::CompilerInvocation> compiler_invocation,
+      std::unique_ptr<clang::CompilerInstance> compiler_instance,
+      std::unique_ptr<clang::Parser> parser);
 
   ~ClangModulesDeclVendorImpl() override = default;
 
@@ -96,7 +96,7 @@ private:
   bool m_enabled = false;
 
   llvm::IntrusiveRefCntPtr<clang::DiagnosticsEngine> m_diagnostics_engine;
-  llvm::IntrusiveRefCntPtr<clang::CompilerInvocation> m_compiler_invocation;
+  std::shared_ptr<clang::CompilerInvocation> m_compiler_invocation;
   std::unique_ptr<clang::CompilerInstance> m_compiler_instance;
   std::unique_ptr<clang::Parser> m_parser;
   size_t m_source_location_index =
@@ -157,14 +157,14 @@ ClangModulesDeclVendor::ClangModulesDeclVendor() {}
 ClangModulesDeclVendor::~ClangModulesDeclVendor() {}
 
 ClangModulesDeclVendorImpl::ClangModulesDeclVendorImpl(
-    llvm::IntrusiveRefCntPtr<clang::DiagnosticsEngine> &diagnostics_engine,
-    llvm::IntrusiveRefCntPtr<clang::CompilerInvocation> &compiler_invocation,
-    std::unique_ptr<clang::CompilerInstance> &&compiler_instance,
-    std::unique_ptr<clang::Parser> &&parser)
-    : ClangModulesDeclVendor(), m_diagnostics_engine(diagnostics_engine),
-      m_compiler_invocation(compiler_invocation),
+    llvm::IntrusiveRefCntPtr<clang::DiagnosticsEngine> diagnostics_engine,
+    std::shared_ptr<clang::CompilerInvocation> compiler_invocation,
+    std::unique_ptr<clang::CompilerInstance> compiler_instance,
+    std::unique_ptr<clang::Parser> parser)
+    : m_diagnostics_engine(std::move(diagnostics_engine)),
+      m_compiler_invocation(std::move(compiler_invocation)),
       m_compiler_instance(std::move(compiler_instance)),
-      m_parser(std::move(parser)), m_imported_modules() {}
+      m_parser(std::move(parser)) {}
 
 void ClangModulesDeclVendorImpl::ReportModuleExportsHelper(
     std::set<ClangModulesDeclVendor::ModuleID> &exports,
@@ -498,7 +498,7 @@ void ClangModulesDeclVendorImpl::ForEachMacro(
                       ti->getLocation(), &invalid);
 
               if (invalid) {
-                lldbassert(!"Unhandled token kind");
+                lldbassert(0 && "Unhandled token kind");
                 macro_expansion.append("<unknown literal value>");
               } else {
                 macro_expansion.append(
@@ -621,9 +621,9 @@ ClangModulesDeclVendor::Create(Target &target) {
     compiler_invocation_argument_cstrs.push_back(arg.c_str());
   }
 
-  llvm::IntrusiveRefCntPtr<clang::CompilerInvocation> invocation(
+  std::shared_ptr<clang::CompilerInvocation> invocation =
       clang::createInvocationFromCommandLine(compiler_invocation_argument_cstrs,
-                                             diagnostics_engine));
+                                             diagnostics_engine);
 
   if (!invocation)
     return nullptr;
@@ -640,7 +640,7 @@ ClangModulesDeclVendor::Create(Target &target) {
       new clang::CompilerInstance);
 
   instance->setDiagnostics(diagnostics_engine.get());
-  instance->setInvocation(invocation.get());
+  instance->setInvocation(invocation);
 
   std::unique_ptr<clang::FrontendAction> action(new clang::SyntaxOnlyAction);
 
@@ -674,6 +674,7 @@ ClangModulesDeclVendor::Create(Target &target) {
   while (!parser->ParseTopLevelDecl(parsed))
     ;
 
-  return new ClangModulesDeclVendorImpl(diagnostics_engine, invocation,
+  return new ClangModulesDeclVendorImpl(std::move(diagnostics_engine),
+                                        std::move(invocation),
                                         std::move(instance), std::move(parser));
 }
diff --git a/source/Plugins/LanguageRuntime/RenderScript/RenderScriptRuntime/RenderScriptx86ABIFixups.cpp b/source/Plugins/LanguageRuntime/RenderScript/RenderScriptRuntime/RenderScriptx86ABIFixups.cpp
index ba531b2e3f2d..aaca04582676 100644
--- a/source/Plugins/LanguageRuntime/RenderScript/RenderScriptRuntime/RenderScriptx86ABIFixups.cpp
+++ b/source/Plugins/LanguageRuntime/RenderScript/RenderScriptRuntime/RenderScriptx86ABIFixups.cpp
@@ -196,8 +196,8 @@ bool fixupX86StructRetCalls(llvm::Module &module) {
     llvm::AllocaInst *new_func_ptr =
         new llvm::AllocaInst(new_func_ptr_type, "new_func_ptr", call_inst);
     // store the new_func_cast to the newly allocated space
-    (void)new llvm::StoreInst(new_func_cast, new_func_ptr,
-                              "new_func_ptr_load_cast", call_inst);
+    (new llvm::StoreInst(new_func_cast, new_func_ptr, call_inst))
+        ->setName("new_func_ptr_load_cast");
     // load the new function address ready for a jump
     llvm::LoadInst *new_func_addr_load =
         new llvm::LoadInst(new_func_ptr, "load_func_pointer", call_inst);
diff --git a/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp b/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp
index dae33f6257d1..a757bba70d16 100644
--- a/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp
+++ b/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp
@@ -480,8 +480,7 @@ Error ProcessKDP::DoResume() {
 
     default:
       // The only valid thread resume states are listed above
-      assert(!"invalid thread resume state");
-      break;
+      llvm_unreachable("invalid thread resume state");
     }
   }
 
diff --git a/source/Plugins/Process/MacOSX-Kernel/ThreadKDP.cpp b/source/Plugins/Process/MacOSX-Kernel/ThreadKDP.cpp
index 273e1966f3fc..9f594f35d70d 100644
--- a/source/Plugins/Process/MacOSX-Kernel/ThreadKDP.cpp
+++ b/source/Plugins/Process/MacOSX-Kernel/ThreadKDP.cpp
@@ -116,8 +116,7 @@ ThreadKDP::CreateRegisterContextForFrame(StackFrame *frame) {
             new RegisterContextKDP_x86_64(*this, concrete_frame_idx));
         break;
       default:
-        assert(!"Add CPU type support in KDP");
-        break;
+        llvm_unreachable("Add CPU type support in KDP");
       }
     }
   } else {
diff --git a/source/Plugins/Process/POSIX/CrashReason.cpp b/source/Plugins/Process/POSIX/CrashReason.cpp
index debdd7808e63..77d6e287486c 100644
--- a/source/Plugins/Process/POSIX/CrashReason.cpp
+++ b/source/Plugins/Process/POSIX/CrashReason.cpp
@@ -21,6 +21,7 @@ void AppendFaultAddr(std::string &str, lldb::addr_t addr) {
   str += ss.str();
 }
 
+#if defined(si_lower) && defined(si_upper)
 void AppendBounds(std::string &str, lldb::addr_t lower_bound,
                   lldb::addr_t upper_bound, lldb::addr_t addr) {
   llvm::raw_string_ostream stream(str);
@@ -37,6 +38,7 @@ void AppendBounds(std::string &str, lldb::addr_t lower_bound,
   stream << ")";
   stream.flush();
 }
+#endif
 
 CrashReason GetCrashReasonForSIGSEGV(const siginfo_t &info) {
   assert(info.si_signo == SIGSEGV);
diff --git a/source/Plugins/Process/Utility/DynamicRegisterInfo.cpp b/source/Plugins/Process/Utility/DynamicRegisterInfo.cpp
index 7c8c26047f85..75f7251fb108 100644
--- a/source/Plugins/Process/Utility/DynamicRegisterInfo.cpp
+++ b/source/Plugins/Process/Utility/DynamicRegisterInfo.cpp
@@ -167,7 +167,7 @@ DynamicRegisterInfo::SetRegisterInfo(const StructuredData::Dictionary &dict,
                       reg_info.byte_offset =
                           containing_reg_info->byte_offset + msbyte;
                     } else {
-                      assert(!"Invalid byte order");
+                      llvm_unreachable("Invalid byte order");
                     }
                   } else {
                     if (msbit > max_bit)
diff --git a/source/Plugins/Process/Utility/RegisterContextLLDB.cpp b/source/Plugins/Process/Utility/RegisterContextLLDB.cpp
index 3c33ddb335d6..ba84c40e9767 100644
--- a/source/Plugins/Process/Utility/RegisterContextLLDB.cpp
+++ b/source/Plugins/Process/Utility/RegisterContextLLDB.cpp
@@ -1053,8 +1053,7 @@ bool RegisterContextLLDB::ReadRegisterValueFromRegisterLocation(
   case UnwindLLDB::RegisterLocation::eRegisterNotSaved:
     break;
   case UnwindLLDB::RegisterLocation::eRegisterSavedAtHostMemoryLocation:
-    assert("FIXME debugger inferior function call unwind");
-    break;
+    llvm_unreachable("FIXME debugger inferior function call unwind");
   case UnwindLLDB::RegisterLocation::eRegisterSavedAtMemoryLocation: {
     Error error(ReadRegisterValueFromMemory(
         reg_info, regloc.location.target_memory_location, reg_info->byte_size,
@@ -1062,8 +1061,7 @@ bool RegisterContextLLDB::ReadRegisterValueFromRegisterLocation(
     success = error.Success();
   } break;
   default:
-    assert("Unknown RegisterLocation type.");
-    break;
+    llvm_unreachable("Unknown RegisterLocation type.");
   }
   return success;
 }
@@ -1097,8 +1095,7 @@ bool RegisterContextLLDB::WriteRegisterValueToRegisterLocation(
   case UnwindLLDB::RegisterLocation::eRegisterNotSaved:
     break;
   case UnwindLLDB::RegisterLocation::eRegisterSavedAtHostMemoryLocation:
-    assert("FIXME debugger inferior function call unwind");
-    break;
+    llvm_unreachable("FIXME debugger inferior function call unwind");
   case UnwindLLDB::RegisterLocation::eRegisterSavedAtMemoryLocation: {
     Error error(WriteRegisterValueToMemory(
         reg_info, regloc.location.target_memory_location, reg_info->byte_size,
@@ -1106,8 +1103,7 @@ bool RegisterContextLLDB::WriteRegisterValueToRegisterLocation(
     success = error.Success();
   } break;
   default:
-    assert("Unknown RegisterLocation type.");
-    break;
+    llvm_unreachable("Unknown RegisterLocation type.");
   }
   return success;
 }
diff --git a/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp b/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
index f9bbaef60215..b70f0903dbd5 100644
--- a/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
+++ b/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
@@ -2599,10 +2599,7 @@ size_t GDBRemoteCommunicationClient::GetCurrentThreadIDs(
       thread_ids.push_back(1);
     }
   } else {
-#if defined(LLDB_CONFIGURATION_DEBUG)
-// assert(!"ProcessGDBRemote::UpdateThreadList() failed due to not getting the
-// sequence mutex");
-#else
+#if !defined(LLDB_CONFIGURATION_DEBUG)
     Log *log(ProcessGDBRemoteLog::GetLogIfAnyCategoryIsSet(GDBR_LOG_PROCESS |
                                                            GDBR_LOG_PACKETS));
     if (log)
@@ -3246,7 +3243,7 @@ GDBRemoteCommunicationClient::GetModulesInfo(
     JSONObject::SP module_sp = std::make_shared<JSONObject>();
     module_array_sp->AppendObject(module_sp);
     module_sp->SetObject(
-        "file", std::make_shared<JSONString>(module_file_spec.GetPath()));
+        "file", std::make_shared<JSONString>(module_file_spec.GetPath(false)));
     module_sp->SetObject("triple",
                          std::make_shared<JSONString>(triple.getTriple()));
   }
diff --git a/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp b/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
index 3747b2b86d52..357b48e53c48 100644
--- a/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
+++ b/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
@@ -1599,12 +1599,7 @@ StructuredData::ArraySP ScriptInterpreterPython::OSPlugin_ThreadsInfo(
 // as the underlying typedef for uint* types, size_t, off_t and other values
 // change.
 
-template <typename T> const char *GetPythonValueFormatString(T t) {
-  assert(!"Unhandled type passed to GetPythonValueFormatString(T), make a "
-          "specialization of GetPythonValueFormatString() to support this "
-          "type.");
-  return nullptr;
-}
+template <typename T> const char *GetPythonValueFormatString(T t);
 template <> const char *GetPythonValueFormatString(char *) { return "s"; }
 template <> const char *GetPythonValueFormatString(char) { return "b"; }
 template <> const char *GetPythonValueFormatString(unsigned char) {
diff --git a/source/Plugins/SymbolFile/DWARF/DWARFDebugRanges.cpp b/source/Plugins/SymbolFile/DWARF/DWARFDebugRanges.cpp
index 78fe571c50cf..ef3566855298 100644
--- a/source/Plugins/SymbolFile/DWARF/DWARFDebugRanges.cpp
+++ b/source/Plugins/SymbolFile/DWARF/DWARFDebugRanges.cpp
@@ -65,8 +65,7 @@ bool DWARFDebugRanges::Extract(SymbolFileDWARF *dwarf2Data,
       break;
 
     default:
-      assert(!"DWARFRangeList::Extract() unsupported address size.");
-      break;
+      llvm_unreachable("DWARFRangeList::Extract() unsupported address size.");
     }
 
     // Filter out empty ranges
diff --git a/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp b/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
index ad18c56b3300..39c52a8a5e57 100644
--- a/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
+++ b/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
@@ -734,12 +734,11 @@ int DWARFFormValue::Compare(const DWARFFormValue &a_value,
   }
 
   case DW_FORM_indirect:
-    assert(!"This shouldn't happen after the form has been extracted...");
-    break;
+    llvm_unreachable(
+        "This shouldn't happen after the form has been extracted...");
 
   default:
-    assert(!"Unhandled DW_FORM");
-    break;
+    llvm_unreachable("Unhandled DW_FORM");
   }
   return -1;
 }
diff --git a/source/Plugins/SymbolFile/DWARF/HashedNameToDIE.cpp b/source/Plugins/SymbolFile/DWARF/HashedNameToDIE.cpp
index afdb1d6afed3..cb1e5c185613 100644
--- a/source/Plugins/SymbolFile/DWARF/HashedNameToDIE.cpp
+++ b/source/Plugins/SymbolFile/DWARF/HashedNameToDIE.cpp
@@ -167,8 +167,7 @@ void DWARFMappedHash::Prologue::AppendAtom(AtomType type, dw_form_t form) {
   case DW_FORM_exprloc:
   case DW_FORM_flag_present:
   case DW_FORM_ref_sig8:
-    assert(!"Unhandled atom form");
-    break;
+    llvm_unreachable("Unhandled atom form");
 
   case DW_FORM_string:
   case DW_FORM_block:
diff --git a/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp b/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp
index 567ac88fdf07..16bb578e99c2 100644
--- a/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp
+++ b/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp
@@ -1253,8 +1253,7 @@ SymbolFileDWARFDebugMap::GetCompileUnit(SymbolFileDWARF *oso_dwarf) {
       }
     }
   }
-  assert(!"this shouldn't happen");
-  return lldb::CompUnitSP();
+  llvm_unreachable("this shouldn't happen");
 }
 
 SymbolFileDWARFDebugMap::CompileUnitInfo *
diff --git a/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.cpp b/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.cpp
index 0852f1922034..be770a38fba7 100644
--- a/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.cpp
+++ b/source/Plugins/UnwindAssembly/InstEmulation/UnwindAssemblyInstEmulation.cpp
@@ -442,15 +442,14 @@ size_t UnwindAssemblyInstEmulation::WriteMemory(
   case EmulateInstruction::eContextPushRegisterOnStack: {
     uint32_t reg_num = LLDB_INVALID_REGNUM;
     uint32_t generic_regnum = LLDB_INVALID_REGNUM;
-    if (context.info_type ==
-        EmulateInstruction::eInfoTypeRegisterToRegisterPlusOffset) {
-      const uint32_t unwind_reg_kind = m_unwind_plan_ptr->GetRegisterKind();
-      reg_num = context.info.RegisterToRegisterPlusOffset.data_reg
-                    .kinds[unwind_reg_kind];
-      generic_regnum = context.info.RegisterToRegisterPlusOffset.data_reg
-                           .kinds[eRegisterKindGeneric];
-    } else
-      assert(!"unhandled case, add code to handle this!");
+    assert(context.info_type ==
+               EmulateInstruction::eInfoTypeRegisterToRegisterPlusOffset &&
+           "unhandled case, add code to handle this!");
+    const uint32_t unwind_reg_kind = m_unwind_plan_ptr->GetRegisterKind();
+    reg_num = context.info.RegisterToRegisterPlusOffset.data_reg
+                  .kinds[unwind_reg_kind];
+    generic_regnum = context.info.RegisterToRegisterPlusOffset.data_reg
+                         .kinds[eRegisterKindGeneric];
 
     if (reg_num != LLDB_INVALID_REGNUM &&
         generic_regnum != LLDB_REGNUM_GENERIC_SP) {
diff --git a/source/Symbol/ClangASTContext.cpp b/source/Symbol/ClangASTContext.cpp
index caebd0ce8c6b..3c817a409b03 100644
--- a/source/Symbol/ClangASTContext.cpp
+++ b/source/Symbol/ClangASTContext.cpp
@@ -390,7 +390,7 @@ static void ParseLangArgs(LangOptions &Opts, InputKind IK, const char *triple) {
     case IK_AST:
     case IK_LLVM_IR:
     case IK_RenderScript:
-      assert(!"Invalid input kind!");
+      llvm_unreachable("Invalid input kind!");
     case IK_OpenCL:
       LangStd = LangStandard::lang_opencl;
       break;
@@ -2119,7 +2119,7 @@ CompilerType ClangASTContext::CreateStructForIdentifier(
   if (!type_name.IsEmpty() &&
       (type = GetTypeForIdentifier<clang::CXXRecordDecl>(type_name))
           .IsValid()) {
-    lldbassert("Trying to create a type for an existing name");
+    lldbassert(0 && "Trying to create a type for an existing name");
     return type;
   }
 
@@ -7568,8 +7568,7 @@ ClangASTContext::GetTemplateArgument(lldb::opaque_compiler_type_t type,
             return CompilerType();
 
           default:
-            assert(!"Unhandled clang::TemplateArgument::ArgKind");
-            break;
+            llvm_unreachable("Unhandled clang::TemplateArgument::ArgKind");
           }
         }
       }
diff --git a/source/Symbol/Type.cpp b/source/Symbol/Type.cpp
index 2374a6d2b202..2df193fa45e5 100644
--- a/source/Symbol/Type.cpp
+++ b/source/Symbol/Type.cpp
@@ -484,8 +484,7 @@ bool Type::ResolveClangType(ResolveState compiler_type_resolve_state) {
         break;
 
       default:
-        assert(!"Unhandled encoding_data_type.");
-        break;
+        llvm_unreachable("Unhandled encoding_data_type.");
       }
     } else {
       // We have no encoding type, return void?
@@ -529,8 +528,7 @@ bool Type::ResolveClangType(ResolveState compiler_type_resolve_state) {
         break;
 
       default:
-        assert(!"Unhandled encoding_data_type.");
-        break;
+        llvm_unreachable("Unhandled encoding_data_type.");
       }
     }
 
diff --git a/source/Target/ABI.cpp b/source/Target/ABI.cpp
index de4f685eb1c7..87363a3b8aeb 100644
--- a/source/Target/ABI.cpp
+++ b/source/Target/ABI.cpp
@@ -189,8 +189,7 @@ bool ABI::PrepareTrivialCall(Thread &thread, lldb::addr_t sp,
                              lldb::addr_t returnAddress, llvm::Type &returntype,
                              llvm::ArrayRef<ABI::CallArgument> args) const {
   // dummy prepare trivial call
-  assert(!"Should never get here!");
-  return false;
+  llvm_unreachable("Should never get here!");
 }
 
 bool ABI::GetFallbackRegisterLocation(
diff --git a/source/Target/Platform.cpp b/source/Target/Platform.cpp
index 43371ec23614..d8db53663f14 100644
--- a/source/Target/Platform.cpp
+++ b/source/Target/Platform.cpp
@@ -1876,9 +1876,8 @@ size_t Platform::GetSoftwareBreakpointTrapOpcode(Target &target,
   } break;
 
   default:
-    assert(
-        !"Unhandled architecture in Platform::GetSoftwareBreakpointTrapOpcode");
-    break;
+    llvm_unreachable(
+        "Unhandled architecture in Platform::GetSoftwareBreakpointTrapOpcode");
   }
 
   assert(bp_site);
diff --git a/source/Target/StackFrameList.cpp b/source/Target/StackFrameList.cpp
index 872e153ddb06..146b2b05dbd7 100644
--- a/source/Target/StackFrameList.cpp
+++ b/source/Target/StackFrameList.cpp
@@ -541,8 +541,7 @@ StackFrameSP StackFrameList::GetFrameAtIndex(uint32_t idx) {
     if (m_frames.empty()) {
       // Why do we have a thread with zero frames, that should not ever
       // happen...
-      if (m_thread.IsValid())
-        assert("A valid thread has no frames.");
+      assert(!m_thread.IsValid() && "A valid thread has no frames.");
     } else {
       ResetCurrentInlinedDepth();
       frame_sp = m_frames[original_idx];