diff --git a/benchmark/Android.bp b/benchmark/Android.bp
index 617f5b0..a7ca279 100644
--- a/benchmark/Android.bp
+++ b/benchmark/Android.bp
@@ -26,6 +26,7 @@
     shared_libs: [
         "libart",
         "libbacktrace",
+        "libbase",
         "libnativehelper",
     ],
     clang: true,
diff --git a/compiler/Android.bp b/compiler/Android.bp
index 09c53b6..f264d30 100644
--- a/compiler/Android.bp
+++ b/compiler/Android.bp
@@ -185,6 +185,7 @@
     },
     generated_sources: ["art_compiler_operator_srcs"],
     shared_libs: [
+        "libbase",
         "liblz4",
         "liblzma",
     ],
@@ -288,6 +289,7 @@
     shared_libs: [
         "libartd-compiler",
         "libart-runtime-gtest",
+        "libbase",
     ],
 }
 
diff --git a/compiler/driver/compiler_driver.cc b/compiler/driver/compiler_driver.cc
index adbf9fd..56a9962 100644
--- a/compiler/driver/compiler_driver.cc
+++ b/compiler/driver/compiler_driver.cc
@@ -595,9 +595,14 @@
               : optimizer::DexToDexCompilationLevel::kRequired);
     }
   } else if ((access_flags & kAccNative) != 0) {
-    // Are we extracting only and have support for generic JNI down calls?
-    if (!driver->GetCompilerOptions().IsJniCompilationEnabled() &&
-        InstructionSetHasGenericJniStub(driver->GetInstructionSet())) {
+    const InstructionSet instruction_set = driver->GetInstructionSet();
+    const bool use_generic_jni =
+        // Are we extracting only and have support for generic JNI down calls?
+        (!driver->GetCompilerOptions().IsJniCompilationEnabled() &&
+             InstructionSetHasGenericJniStub(instruction_set)) ||
+        // Always punt to generic JNI for MIPS because of no support for @CriticalNative. b/31743474
+        (instruction_set == kMips || instruction_set == kMips64);
+    if (use_generic_jni) {
       // Leaving this empty will trigger the generic JNI version
     } else {
       // Look-up the ArtMethod associated with this code_item (if any)
diff --git a/compiler/oat_writer.cc b/compiler/oat_writer.cc
index 9045817..c840a9e 100644
--- a/compiler/oat_writer.cc
+++ b/compiler/oat_writer.cc
@@ -966,7 +966,7 @@
           nullptr,
           invoke_type);
       if (method == nullptr) {
-        LOG(INTERNAL_FATAL) << "Unexpected failure to resolve a method: "
+        LOG(FATAL_WITHOUT_ABORT) << "Unexpected failure to resolve a method: "
             << PrettyMethod(it.GetMemberIndex(), *dex_file_, true);
         soa.Self()->AssertPendingException();
         mirror::Throwable* exc = soa.Self()->GetException();
diff --git a/compiler/optimizing/instruction_builder.cc b/compiler/optimizing/instruction_builder.cc
index 5a6a212..f7dc237 100644
--- a/compiler/optimizing/instruction_builder.cc
+++ b/compiler/optimizing/instruction_builder.cc
@@ -1815,7 +1815,20 @@
     case Instruction::MOVE_OBJECT:
     case Instruction::MOVE_OBJECT_16:
     case Instruction::MOVE_OBJECT_FROM16: {
-      HInstruction* value = LoadLocal(instruction.VRegB(), Primitive::kPrimNot);
+      // The verifier has no notion of a null type, so a move-object of constant 0
+      // will lead to the same constant 0 in the destination register. To mimic
+      // this behavior, we just pretend we haven't seen a type change (int to reference)
+      // for the 0 constant and phis. We rely on our type propagation to eventually get the
+      // types correct.
+      uint32_t reg_number = instruction.VRegB();
+      HInstruction* value = (*current_locals_)[reg_number];
+      if (value->IsIntConstant()) {
+        DCHECK_EQ(value->AsIntConstant()->GetValue(), 0);
+      } else if (value->IsPhi()) {
+        DCHECK(value->GetType() == Primitive::kPrimInt || value->GetType() == Primitive::kPrimNot);
+      } else {
+        value = LoadLocal(reg_number, Primitive::kPrimNot);
+      }
       UpdateLocal(instruction.VRegA(), value);
       break;
     }
diff --git a/compiler/optimizing/ssa_builder.cc b/compiler/optimizing/ssa_builder.cc
index f7dc112..03807ba 100644
--- a/compiler/optimizing/ssa_builder.cc
+++ b/compiler/optimizing/ssa_builder.cc
@@ -163,18 +163,12 @@
 // Replace inputs of `phi` to match its type. Return false if conflict is identified.
 bool SsaBuilder::TypeInputsOfPhi(HPhi* phi, ArenaVector<HPhi*>* worklist) {
   Primitive::Type common_type = phi->GetType();
-  if (common_type == Primitive::kPrimVoid || Primitive::IsIntegralType(common_type)) {
-    // Phi either contains only other untyped phis (common_type == kPrimVoid),
-    // or `common_type` is integral and we do not need to retype ambiguous inputs
-    // because they are always constructed with the integral type candidate.
+  if (Primitive::IsIntegralType(common_type)) {
+    // We do not need to retype ambiguous inputs because they are always constructed
+    // with the integral type candidate.
     if (kIsDebugBuild) {
       for (HInstruction* input : phi->GetInputs()) {
-        if (common_type == Primitive::kPrimVoid) {
-          DCHECK(input->IsPhi() && input->GetType() == Primitive::kPrimVoid);
-        } else {
-          DCHECK((input->IsPhi() && input->GetType() == Primitive::kPrimVoid) ||
-                 HPhi::ToPhiType(input->GetType()) == common_type);
-        }
+        DCHECK(HPhi::ToPhiType(input->GetType()) == common_type);
       }
     }
     // Inputs did not need to be replaced, hence no conflict. Report success.
diff --git a/dex2oat/Android.bp b/dex2oat/Android.bp
index 11c18b0..931bbd3 100644
--- a/dex2oat/Android.bp
+++ b/dex2oat/Android.bp
@@ -49,6 +49,7 @@
     shared_libs: [
         "libart",
         "libart-compiler",
+        "libbase",
         "libsigchain",
     ],
 }
@@ -62,6 +63,7 @@
     shared_libs: [
         "libartd",
         "libartd-compiler",
+        "libbase",
         "libsigchain",
     ],
 }
diff --git a/dex2oat/dex2oat.cc b/dex2oat/dex2oat.cc
index c422163..3b2715d 100644
--- a/dex2oat/dex2oat.cc
+++ b/dex2oat/dex2oat.cc
@@ -450,7 +450,11 @@
     //       it's rather easy to hang in unwinding.
     //       LogLine also avoids ART logging lock issues, as it's really only a wrapper around
     //       logcat logging or stderr output.
-    LogMessage::LogLine(__FILE__, __LINE__, LogSeverity::FATAL, message.c_str());
+    android::base::LogMessage::LogLine(__FILE__,
+                                       __LINE__,
+                                       android::base::LogId::DEFAULT,
+                                       LogSeverity::FATAL,
+                                       message.c_str());
     exit(1);
   }
 
diff --git a/dexdump/Android.bp b/dexdump/Android.bp
index 64f2299..3e589f7 100644
--- a/dexdump/Android.bp
+++ b/dexdump/Android.bp
@@ -22,7 +22,10 @@
         "dexdump.cc",
     ],
     cflags: ["-Wall"],
-    shared_libs: ["libart"],
+    shared_libs: [
+        "libart",
+        "libbase",
+    ],
 }
 
 art_cc_test {
diff --git a/dexlayout/Android.bp b/dexlayout/Android.bp
index c411572..296cdb6 100644
--- a/dexlayout/Android.bp
+++ b/dexlayout/Android.bp
@@ -22,7 +22,10 @@
         "dex_ir_builder.cc",
     ],
     cflags: ["-Wall"],
-    shared_libs: ["libart"],
+    shared_libs: [
+        "libart",
+        "libbase",
+    ],
 }
 
 art_cc_test {
diff --git a/imgdiag/Android.bp b/imgdiag/Android.bp
index 7837d66..eaeb78e 100644
--- a/imgdiag/Android.bp
+++ b/imgdiag/Android.bp
@@ -26,7 +26,10 @@
     // that the image it's analyzing be the same ISA as the runtime ISA.
     compile_multilib: "both",
 
-    shared_libs: ["libbacktrace"],
+    shared_libs: [
+        "libbacktrace",
+        "libbase",
+    ],
     target: {
         android: {
             shared_libs: ["libcutils"],
diff --git a/oatdump/Android.bp b/oatdump/Android.bp
index dd6331c..bbe6cc1 100644
--- a/oatdump/Android.bp
+++ b/oatdump/Android.bp
@@ -34,6 +34,7 @@
         "libart",
         "libart-compiler",
         "libart-disassembler",
+        "libbase",
     ],
 }
 
@@ -47,6 +48,7 @@
         "libartd",
         "libartd-compiler",
         "libartd-disassembler",
+        "libbase",
     ],
 }
 
diff --git a/patchoat/Android.bp b/patchoat/Android.bp
index 8d8d6d1..a78f97d 100644
--- a/patchoat/Android.bp
+++ b/patchoat/Android.bp
@@ -24,6 +24,9 @@
             compile_multilib: "prefer32",
         },
     },
+    shared_libs: [
+        "libbase",
+    ],
 }
 
 art_cc_binary {
diff --git a/profman/Android.bp b/profman/Android.bp
index 322dda2..2dcbaee 100644
--- a/profman/Android.bp
+++ b/profman/Android.bp
@@ -32,6 +32,10 @@
     include_dirs: [
         "art/cmdline",
     ],
+
+    shared_libs: [
+        "libbase",
+    ],
 }
 
 art_cc_binary {
diff --git a/runtime/Android.bp b/runtime/Android.bp
index ad953ea..fd9b5b9 100644
--- a/runtime/Android.bp
+++ b/runtime/Android.bp
@@ -470,6 +470,7 @@
     srcs: ["common_runtime_test.cc"],
     shared_libs: [
         "libartd",
+        "libbase",
     ],
 }
 
diff --git a/runtime/base/bit_utils.h b/runtime/base/bit_utils.h
index d2f0fdb..f0811b0 100644
--- a/runtime/base/bit_utils.h
+++ b/runtime/base/bit_utils.h
@@ -21,13 +21,8 @@
 #include <limits>
 #include <type_traits>
 
-// This header is used in the disassembler with libbase's logging. Only include ART logging
-// when no other logging macros are available. b/15436106, b/31338270
-#ifndef CHECK
-#include "base/logging.h"
-#endif
-
 #include "base/iteration_range.h"
+#include "base/logging.h"
 #include "base/stl_util.h"
 
 namespace art {
diff --git a/runtime/base/logging.cc b/runtime/base/logging.cc
index e00e62d..17873b5 100644
--- a/runtime/base/logging.cc
+++ b/runtime/base/logging.cc
@@ -28,6 +28,7 @@
 // Headers for LogMessage::LogLine.
 #ifdef ART_TARGET_ANDROID
 #include "cutils/log.h"
+#include <android/set_abort_message.h>
 #else
 #include <sys/types.h>
 #include <unistd.h>
@@ -39,24 +40,10 @@
 
 unsigned int gAborting = 0;
 
-static LogSeverity gMinimumLogSeverity = INFO;
 static std::unique_ptr<std::string> gCmdLine;
 static std::unique_ptr<std::string> gProgramInvocationName;
 static std::unique_ptr<std::string> gProgramInvocationShortName;
 
-// Print INTERNAL_FATAL messages directly instead of at destruction time. This only works on the
-// host right now: for the device, a stream buf collating output into lines and calling LogLine or
-// lower-level logging is necessary.
-#ifdef ART_TARGET_ANDROID
-static constexpr bool kPrintInternalFatalDirectly = false;
-#else
-static constexpr bool kPrintInternalFatalDirectly = !kIsTargetBuild;
-#endif
-
-static bool PrintDirectly(LogSeverity severity) {
-  return kPrintInternalFatalDirectly && severity == INTERNAL_FATAL;
-}
-
 const char* GetCmdLine() {
   return (gCmdLine.get() != nullptr) ? gCmdLine->c_str() : nullptr;
 }
@@ -70,6 +57,16 @@
                                                         : "art";
 }
 
+NO_RETURN
+static void RuntimeAborter(const char* abort_message) {
+#ifdef __ANDROID__
+  android_set_abort_message(abort_message);
+#else
+  UNUSED(abort_message);
+#endif
+  Runtime::Abort();
+}
+
 void InitLogging(char* argv[]) {
   if (gCmdLine.get() != nullptr) {
     return;
@@ -94,150 +91,14 @@
     // TODO: fall back to /proc/self/cmdline when argv is null on Linux.
     gCmdLine.reset(new std::string("<unset>"));
   }
-  const char* tags = getenv("ANDROID_LOG_TAGS");
-  if (tags == nullptr) {
-    return;
-  }
 
-  std::vector<std::string> specs;
-  Split(tags, ' ', &specs);
-  for (size_t i = 0; i < specs.size(); ++i) {
-    // "tag-pattern:[vdiwefs]"
-    std::string spec(specs[i]);
-    if (spec.size() == 3 && StartsWith(spec, "*:")) {
-      switch (spec[2]) {
-        case 'v':
-          gMinimumLogSeverity = VERBOSE;
-          continue;
-        case 'd':
-          gMinimumLogSeverity = DEBUG;
-          continue;
-        case 'i':
-          gMinimumLogSeverity = INFO;
-          continue;
-        case 'w':
-          gMinimumLogSeverity = WARNING;
-          continue;
-        case 'e':
-          gMinimumLogSeverity = ERROR;
-          continue;
-        case 'f':
-          gMinimumLogSeverity = FATAL;
-          continue;
-        // liblog will even suppress FATAL if you say 's' for silent, but that's crazy!
-        case 's':
-          gMinimumLogSeverity = FATAL;
-          continue;
-      }
-    }
-    LOG(FATAL) << "unsupported '" << spec << "' in ANDROID_LOG_TAGS (" << tags << ")";
-  }
-}
-
-// This indirection greatly reduces the stack impact of having
-// lots of checks/logging in a function.
-class LogMessageData {
- public:
-  LogMessageData(const char* file, unsigned int line, LogSeverity severity, int error)
-      : file_(GetFilenameBase(file)),
-        line_number_(line),
-        severity_(severity),
-        error_(error) {}
-
-  const char * GetFile() const {
-    return file_;
-  }
-
-  unsigned int GetLineNumber() const {
-    return line_number_;
-  }
-
-  LogSeverity GetSeverity() const {
-    return severity_;
-  }
-
-  int GetError() const {
-    return error_;
-  }
-
-  std::ostream& GetBuffer() {
-    return buffer_;
-  }
-
-  std::string ToString() const {
-    return buffer_.str();
-  }
-
- private:
-  std::ostringstream buffer_;
-  const char* const file_;
-  const unsigned int line_number_;
-  const LogSeverity severity_;
-  const int error_;
-
-  static const char* GetFilenameBase(const char* file) {
-    const char* last_slash = strrchr(file, '/');
-    return (last_slash == nullptr) ? file : last_slash + 1;
-  }
-
-  DISALLOW_COPY_AND_ASSIGN(LogMessageData);
-};
-
-
-LogMessage::LogMessage(const char* file, unsigned int line, LogSeverity severity, int error)
-  : data_(new LogMessageData(file, line, severity, error)) {
-  if (PrintDirectly(severity)) {
-    static constexpr char kLogCharacters[] = { 'V', 'D', 'I', 'W', 'E', 'F', 'F' };
-    static_assert(arraysize(kLogCharacters) == static_cast<size_t>(INTERNAL_FATAL) + 1,
-                  "Wrong character array size");
-    stream() << ProgramInvocationShortName() << " " << kLogCharacters[static_cast<size_t>(severity)]
-             << " " << getpid() << " " << ::art::GetTid() << " " << file << ":" <<  line << "]";
-  }
-}
-LogMessage::~LogMessage() {
-  if (PrintDirectly(data_->GetSeverity())) {
-    // Add newline at the end to match the not printing directly behavior.
-    std::cerr << '\n';
-  } else {
-    if (data_->GetSeverity() < gMinimumLogSeverity) {
-      return;  // No need to format something we're not going to output.
-    }
-
-    // Finish constructing the message.
-    if (data_->GetError() != -1) {
-      data_->GetBuffer() << ": " << strerror(data_->GetError());
-    }
-    std::string msg(data_->ToString());
-
-    // Do the actual logging with the lock held.
-    {
-      MutexLock mu(Thread::Current(), *Locks::logging_lock_);
-      if (msg.find('\n') == std::string::npos) {
-        LogLine(data_->GetFile(), data_->GetLineNumber(), data_->GetSeverity(), msg.c_str());
-      } else {
-        msg += '\n';
-        size_t i = 0;
-        while (i < msg.size()) {
-          size_t nl = msg.find('\n', i);
-          msg[nl] = '\0';
-          LogLine(data_->GetFile(), data_->GetLineNumber(), data_->GetSeverity(), &msg[i]);
-          i = nl + 1;
-        }
-      }
-    }
-  }
-
-  // Abort if necessary.
-  if (data_->GetSeverity() == FATAL) {
-    Runtime::Abort();
-  }
-}
-
-std::ostream& LogMessage::stream() {
-  if (PrintDirectly(data_->GetSeverity())) {
-    return std::cerr;
-  }
-  return data_->GetBuffer();
+#ifdef __ANDROID__
+#define INIT_LOGGING_DEFAULT_LOGGER android::base::LogdLogger()
+#else
+#define INIT_LOGGING_DEFAULT_LOGGER android::base::StderrLogger
+#endif
+  android::base::InitLogging(argv, INIT_LOGGING_DEFAULT_LOGGER, RuntimeAborter);
+#undef INIT_LOGGING_DEFAULT_LOGGER
 }
 
 #ifdef ART_TARGET_ANDROID
@@ -245,31 +106,14 @@
   ANDROID_LOG_VERBOSE, ANDROID_LOG_DEBUG, ANDROID_LOG_INFO, ANDROID_LOG_WARN,
   ANDROID_LOG_ERROR, ANDROID_LOG_FATAL, ANDROID_LOG_FATAL
 };
-static_assert(arraysize(kLogSeverityToAndroidLogPriority) == INTERNAL_FATAL + 1,
+static_assert(arraysize(kLogSeverityToAndroidLogPriority) == ::android::base::FATAL + 1,
               "Mismatch in size of kLogSeverityToAndroidLogPriority and values in LogSeverity");
 #endif
 
-void LogMessage::LogLine(const char* file, unsigned int line, LogSeverity log_severity,
-                         const char* message) {
-#ifdef ART_TARGET_ANDROID
-  const char* tag = ProgramInvocationShortName();
-  int priority = kLogSeverityToAndroidLogPriority[static_cast<size_t>(log_severity)];
-  if (priority == ANDROID_LOG_FATAL) {
-    LOG_PRI(priority, tag, "%s:%u] %s", file, line, message);
-  } else {
-    LOG_PRI(priority, tag, "%s", message);
-  }
-#else
-  static const char* log_characters = "VDIWEFF";
-  CHECK_EQ(strlen(log_characters), INTERNAL_FATAL + 1U);
-  char severity = log_characters[log_severity];
-  fprintf(stderr, "%s %c %5d %5d %s:%u] %s\n",
-          ProgramInvocationShortName(), severity, getpid(), ::art::GetTid(), file, line, message);
-#endif
-}
-
-void LogMessage::LogLineLowStack(const char* file, unsigned int line, LogSeverity log_severity,
-                                 const char* message) {
+void LogHelper::LogLineLowStack(const char* file,
+                                unsigned int line,
+                                LogSeverity log_severity,
+                                const char* message) {
 #ifdef ART_TARGET_ANDROID
   // Use android_writeLog() to avoid stack-based buffers used by android_printLog().
   const char* tag = ProgramInvocationShortName();
@@ -292,8 +136,9 @@
   }
 #else
   static constexpr char kLogCharacters[] = { 'V', 'D', 'I', 'W', 'E', 'F', 'F' };
-  static_assert(arraysize(kLogCharacters) == static_cast<size_t>(INTERNAL_FATAL) + 1,
-                "Wrong character array size");
+  static_assert(
+      arraysize(kLogCharacters) == static_cast<size_t>(::android::base::FATAL) + 1,
+      "Wrong character array size");
 
   const char* program_name = ProgramInvocationShortName();
   TEMP_FAILURE_RETRY(write(STDERR_FILENO, program_name, strlen(program_name)));
@@ -310,13 +155,4 @@
 #endif  // ART_TARGET_ANDROID
 }
 
-ScopedLogSeverity::ScopedLogSeverity(LogSeverity level) {
-  old_ = gMinimumLogSeverity;
-  gMinimumLogSeverity = level;
-}
-
-ScopedLogSeverity::~ScopedLogSeverity() {
-  gMinimumLogSeverity = old_;
-}
-
 }  // namespace art
diff --git a/runtime/base/logging.h b/runtime/base/logging.h
index 185aa0e..5f84204 100644
--- a/runtime/base/logging.h
+++ b/runtime/base/logging.h
@@ -18,20 +18,16 @@
 #define ART_RUNTIME_BASE_LOGGING_H_
 
 #include <ostream>
+#include <sstream>
 
+#include "android-base/logging.h"
 #include "base/macros.h"
 
 namespace art {
 
-enum LogSeverity {
-  VERBOSE,
-  DEBUG,
-  INFO,
-  WARNING,
-  ERROR,
-  FATAL,
-  INTERNAL_FATAL,  // For Runtime::Abort.
-};
+// Make libbase's LogSeverity more easily available.
+using ::android::base::LogSeverity;
+using ::android::base::ScopedLogSeverity;
 
 // The members of this struct are the valid arguments to VLOG and VLOG_IS_ON in code,
 // and the "-verbose:" command line argument.
@@ -89,172 +85,28 @@
 // hasn't been performed then just returns "art"
 extern const char* ProgramInvocationShortName();
 
-// Logs a message to logcat on Android otherwise to stderr. If the severity is FATAL it also causes
-// an abort. For example: LOG(FATAL) << "We didn't expect to reach here";
-#define LOG(severity) ::art::LogMessage(__FILE__, __LINE__, severity, -1).stream()
+class LogHelper {
+ public:
+  // A logging helper for logging a single line. Can be used with little stack.
+  static void LogLineLowStack(const char* file,
+                              unsigned int line,
+                              android::base::LogSeverity severity,
+                              const char* msg);
 
-// A variant of LOG that also logs the current errno value. To be used when library calls fail.
-#define PLOG(severity) ::art::LogMessage(__FILE__, __LINE__, severity, errno).stream()
-
-// Marker that code is yet to be implemented.
-#define UNIMPLEMENTED(level) LOG(level) << __PRETTY_FUNCTION__ << " unimplemented "
+ private:
+  DISALLOW_ALLOCATION();
+  DISALLOW_COPY_AND_ASSIGN(LogHelper);
+};
 
 // Is verbose logging enabled for the given module? Where the module is defined in LogVerbosity.
 #define VLOG_IS_ON(module) UNLIKELY(::art::gLogVerbosity.module)
 
 // Variant of LOG that logs when verbose logging is enabled for a module. For example,
 // VLOG(jni) << "A JNI operation was performed";
-#define VLOG(module) \
-  if (VLOG_IS_ON(module)) \
-    ::art::LogMessage(__FILE__, __LINE__, INFO, -1).stream()
+#define VLOG(module) if (VLOG_IS_ON(module)) LOG(INFO)
 
 // Return the stream associated with logging for the given module.
-#define VLOG_STREAM(module) ::art::LogMessage(__FILE__, __LINE__, INFO, -1).stream()
-
-// Check whether condition x holds and LOG(FATAL) if not. The value of the expression x is only
-// evaluated once. Extra logging can be appended using << after. For example,
-// CHECK(false == true) results in a log message of "Check failed: false == true".
-#define CHECK(x) \
-  if (UNLIKELY(!(x))) \
-    ::art::LogMessage(__FILE__, __LINE__, ::art::FATAL, -1).stream() \
-        << "Check failed: " #x << " "
-
-// Helper for CHECK_xx(x,y) macros.
-#define CHECK_OP(LHS, RHS, OP) \
-  for (auto _values = ::art::MakeEagerEvaluator(LHS, RHS); \
-       UNLIKELY(!(_values.lhs OP _values.rhs)); /* empty */) \
-    ::art::LogMessage(__FILE__, __LINE__, ::art::FATAL, -1).stream() \
-        << "Check failed: " << #LHS << " " << #OP << " " << #RHS \
-        << " (" #LHS "=" << _values.lhs << ", " #RHS "=" << _values.rhs << ") "
-
-
-// Check whether a condition holds between x and y, LOG(FATAL) if not. The value of the expressions
-// x and y is evaluated once. Extra logging can be appended using << after. For example,
-// CHECK_NE(0 == 1, false) results in "Check failed: false != false (0==1=false, false=false) ".
-#define CHECK_EQ(x, y) CHECK_OP(x, y, ==)
-#define CHECK_NE(x, y) CHECK_OP(x, y, !=)
-#define CHECK_LE(x, y) CHECK_OP(x, y, <=)
-#define CHECK_LT(x, y) CHECK_OP(x, y, <)
-#define CHECK_GE(x, y) CHECK_OP(x, y, >=)
-#define CHECK_GT(x, y) CHECK_OP(x, y, >)
-
-// Helper for CHECK_STRxx(s1,s2) macros.
-#define CHECK_STROP(s1, s2, sense) \
-  if (UNLIKELY((strcmp(s1, s2) == 0) != (sense))) \
-    LOG(::art::FATAL) << "Check failed: " \
-        << "\"" << (s1) << "\"" \
-        << ((sense) ? " == " : " != ") \
-        << "\"" << (s2) << "\""
-
-// Check for string (const char*) equality between s1 and s2, LOG(FATAL) if not.
-#define CHECK_STREQ(s1, s2) CHECK_STROP(s1, s2, true)
-#define CHECK_STRNE(s1, s2) CHECK_STROP(s1, s2, false)
-
-// Perform the pthread function call(args), LOG(FATAL) on error.
-#define CHECK_PTHREAD_CALL(call, args, what) \
-  do { \
-    int rc = call args; \
-    if (rc != 0) { \
-      errno = rc; \
-      PLOG(::art::FATAL) << # call << " failed for " << (what); \
-    } \
-  } while (false)
-
-
-// DCHECKs are debug variants of CHECKs only enabled in debug builds. Generally CHECK should be
-// used unless profiling identifies a CHECK as being in performance critical code.
-#if defined(NDEBUG)
-static constexpr bool kEnableDChecks = false;
-#else
-static constexpr bool kEnableDChecks = true;
-#endif
-
-#define DCHECK(x) if (::art::kEnableDChecks) CHECK(x)
-#define DCHECK_EQ(x, y) if (::art::kEnableDChecks) CHECK_EQ(x, y)
-#define DCHECK_NE(x, y) if (::art::kEnableDChecks) CHECK_NE(x, y)
-#define DCHECK_LE(x, y) if (::art::kEnableDChecks) CHECK_LE(x, y)
-#define DCHECK_LT(x, y) if (::art::kEnableDChecks) CHECK_LT(x, y)
-#define DCHECK_GE(x, y) if (::art::kEnableDChecks) CHECK_GE(x, y)
-#define DCHECK_GT(x, y) if (::art::kEnableDChecks) CHECK_GT(x, y)
-#define DCHECK_STREQ(s1, s2) if (::art::kEnableDChecks) CHECK_STREQ(s1, s2)
-#define DCHECK_STRNE(s1, s2) if (::art::kEnableDChecks) CHECK_STRNE(s1, s2)
-
-// Temporary class created to evaluate the LHS and RHS, used with MakeEagerEvaluator to infer the
-// types of LHS and RHS.
-template <typename LHS, typename RHS>
-struct EagerEvaluator {
-  constexpr EagerEvaluator(LHS l, RHS r) : lhs(l), rhs(r) { }
-  LHS lhs;
-  RHS rhs;
-};
-
-// Helper function for CHECK_xx.
-template <typename LHS, typename RHS>
-constexpr EagerEvaluator<LHS, RHS> MakeEagerEvaluator(LHS lhs, RHS rhs) {
-  return EagerEvaluator<LHS, RHS>(lhs, rhs);
-}
-
-// Explicitly instantiate EagerEvalue for pointers so that char*s aren't treated as strings. To
-// compare strings use CHECK_STREQ and CHECK_STRNE. We rely on signed/unsigned warnings to
-// protect you against combinations not explicitly listed below.
-#define EAGER_PTR_EVALUATOR(T1, T2) \
-  template <> struct EagerEvaluator<T1, T2> { \
-    EagerEvaluator(T1 l, T2 r) \
-        : lhs(reinterpret_cast<const void*>(l)), \
-          rhs(reinterpret_cast<const void*>(r)) { } \
-    const void* lhs; \
-    const void* rhs; \
-  }
-EAGER_PTR_EVALUATOR(const char*, const char*);
-EAGER_PTR_EVALUATOR(const char*, char*);
-EAGER_PTR_EVALUATOR(char*, const char*);
-EAGER_PTR_EVALUATOR(char*, char*);
-EAGER_PTR_EVALUATOR(const unsigned char*, const unsigned char*);
-EAGER_PTR_EVALUATOR(const unsigned char*, unsigned char*);
-EAGER_PTR_EVALUATOR(unsigned char*, const unsigned char*);
-EAGER_PTR_EVALUATOR(unsigned char*, unsigned char*);
-EAGER_PTR_EVALUATOR(const signed char*, const signed char*);
-EAGER_PTR_EVALUATOR(const signed char*, signed char*);
-EAGER_PTR_EVALUATOR(signed char*, const signed char*);
-EAGER_PTR_EVALUATOR(signed char*, signed char*);
-
-// Data for the log message, not stored in LogMessage to avoid increasing the stack size.
-class LogMessageData;
-
-// A LogMessage is a temporarily scoped object used by LOG and the unlikely part of a CHECK. The
-// destructor will abort if the severity is FATAL.
-class LogMessage {
- public:
-  LogMessage(const char* file, unsigned int line, LogSeverity severity, int error);
-
-  ~LogMessage();  // TODO: enable REQUIRES(!Locks::logging_lock_).
-
-  // Returns the stream associated with the message, the LogMessage performs output when it goes
-  // out of scope.
-  std::ostream& stream();
-
-  // The routine that performs the actual logging.
-  static void LogLine(const char* file, unsigned int line, LogSeverity severity, const char* msg);
-
-  // A variant of the above for use with little stack.
-  static void LogLineLowStack(const char* file, unsigned int line, LogSeverity severity,
-                              const char* msg);
-
- private:
-  const std::unique_ptr<LogMessageData> data_;
-
-  DISALLOW_COPY_AND_ASSIGN(LogMessage);
-};
-
-// Allows to temporarily change the minimum severity level for logging.
-class ScopedLogSeverity {
- public:
-  explicit ScopedLogSeverity(LogSeverity level);
-  ~ScopedLogSeverity();
-
- private:
-  LogSeverity old_;
-};
+#define VLOG_STREAM(module) LOG_STREAM(INFO)
 
 }  // namespace art
 
diff --git a/runtime/base/mutex.cc b/runtime/base/mutex.cc
index 43c38c4..9d56954 100644
--- a/runtime/base/mutex.cc
+++ b/runtime/base/mutex.cc
@@ -328,14 +328,20 @@
   bool shutting_down = IsShuttingDown();
 #if ART_USE_FUTEXES
   if (state_.LoadRelaxed() != 0) {
-    LOG(shutting_down ? WARNING : FATAL) << "destroying mutex with owner: " << exclusive_owner_;
+    LOG(shutting_down
+            ? ::android::base::WARNING
+            : ::android::base::FATAL) << "destroying mutex with owner: " << exclusive_owner_;
   } else {
     if (exclusive_owner_ != 0) {
-      LOG(shutting_down ? WARNING : FATAL) << "unexpectedly found an owner on unlocked mutex "
+      LOG(shutting_down
+              ? ::android::base::WARNING
+              : ::android::base::FATAL) << "unexpectedly found an owner on unlocked mutex "
                                            << name_;
     }
     if (num_contenders_.LoadSequentiallyConsistent() != 0) {
-      LOG(shutting_down ? WARNING : FATAL) << "unexpectedly found a contender on mutex " << name_;
+      LOG(shutting_down
+              ? ::android::base::WARNING
+              : ::android::base::FATAL) << "unexpectedly found a contender on mutex " << name_;
     }
   }
 #else
@@ -346,7 +352,9 @@
     errno = rc;
     // TODO: should we just not log at all if shutting down? this could be the logging mutex!
     MutexLock mu(Thread::Current(), *Locks::runtime_shutdown_lock_);
-    PLOG(shutting_down ? WARNING : FATAL) << "pthread_mutex_destroy failed for " << name_;
+    PLOG(shutting_down
+             ? ::android::base::WARNING
+             : ::android::base::FATAL) << "pthread_mutex_destroy failed for " << name_;
   }
 #endif
 }
@@ -480,9 +488,11 @@
         if (this != Locks::logging_lock_) {
           LOG(FATAL) << "Unexpected state_ in unlock " << cur_state << " for " << name_;
         } else {
-          LogMessage::LogLine(__FILE__, __LINE__, INTERNAL_FATAL,
-                              StringPrintf("Unexpected state_ %d in unlock for %s",
-                                           cur_state, name_).c_str());
+          LogHelper::LogLineLowStack(__FILE__,
+                                     __LINE__,
+                                     ::android::base::FATAL_WITHOUT_ABORT,
+                                     StringPrintf("Unexpected state_ %d in unlock for %s",
+                                                  cur_state, name_).c_str());
           _exit(1);
         }
       }
@@ -762,7 +772,10 @@
   if (num_waiters_!= 0) {
     Runtime* runtime = Runtime::Current();
     bool shutting_down = runtime == nullptr || runtime->IsShuttingDown(Thread::Current());
-    LOG(shutting_down ? WARNING : FATAL) << "ConditionVariable::~ConditionVariable for " << name_
+    LOG(shutting_down
+           ? ::android::base::WARNING
+           : ::android::base::FATAL)
+        << "ConditionVariable::~ConditionVariable for " << name_
         << " called with " << num_waiters_ << " waiters.";
   }
 #else
@@ -774,7 +787,9 @@
     MutexLock mu(Thread::Current(), *Locks::runtime_shutdown_lock_);
     Runtime* runtime = Runtime::Current();
     bool shutting_down = (runtime == nullptr) || runtime->IsShuttingDownLocked();
-    PLOG(shutting_down ? WARNING : FATAL) << "pthread_cond_destroy failed for " << name_;
+    PLOG(shutting_down
+             ? ::android::base::WARNING
+             : ::android::base::FATAL) << "pthread_cond_destroy failed for " << name_;
   }
 #endif
 }
diff --git a/runtime/base/stl_util.h b/runtime/base/stl_util.h
index a4cf249..a53dcea 100644
--- a/runtime/base/stl_util.h
+++ b/runtime/base/stl_util.h
@@ -20,11 +20,7 @@
 #include <algorithm>
 #include <sstream>
 
-// This header is used in the disassembler with libbase's logging. Only include ART logging
-// when no other logging macros are available. b/15436106, b/31338270
-#ifndef CHECK
 #include "base/logging.h"
-#endif
 
 namespace art {
 
diff --git a/runtime/base/unix_file/fd_file.cc b/runtime/base/unix_file/fd_file.cc
index 48e3ceb..4498198 100644
--- a/runtime/base/unix_file/fd_file.cc
+++ b/runtime/base/unix_file/fd_file.cc
@@ -64,16 +64,16 @@
 void FdFile::Destroy() {
   if (kCheckSafeUsage && (guard_state_ < GuardState::kNoCheck)) {
     if (guard_state_ < GuardState::kFlushed) {
-      LOG(::art::ERROR) << "File " << file_path_ << " wasn't explicitly flushed before destruction.";
+      LOG(ERROR) << "File " << file_path_ << " wasn't explicitly flushed before destruction.";
     }
     if (guard_state_ < GuardState::kClosed) {
-      LOG(::art::ERROR) << "File " << file_path_ << " wasn't explicitly closed before destruction.";
+      LOG(ERROR) << "File " << file_path_ << " wasn't explicitly closed before destruction.";
     }
     CHECK_GE(guard_state_, GuardState::kClosed);
   }
   if (auto_close_ && fd_ != -1) {
     if (Close() != 0) {
-      PLOG(::art::WARNING) << "Failed to close file " << file_path_;
+      PLOG(WARNING) << "Failed to close file " << file_path_;
     }
   }
 }
@@ -104,7 +104,7 @@
   if (kCheckSafeUsage) {
     if (guard_state_ < GuardState::kNoCheck) {
       if (warn_threshold < GuardState::kNoCheck && guard_state_ >= warn_threshold) {
-        LOG(::art::ERROR) << warning;
+        LOG(ERROR) << warning;
       }
       guard_state_ = target;
     }
@@ -117,7 +117,7 @@
       if (guard_state_ < target) {
         guard_state_ = target;
       } else if (target < guard_state_) {
-        LOG(::art::ERROR) << warning;
+        LOG(ERROR) << warning;
       }
     }
   }
@@ -350,13 +350,13 @@
   DCHECK(!read_only_mode_);
   int flush_result = TEMP_FAILURE_RETRY(Flush());
   if (flush_result != 0) {
-    LOG(::art::ERROR) << "CloseOrErase failed while flushing a file.";
+    LOG(ERROR) << "CloseOrErase failed while flushing a file.";
     Erase();
     return flush_result;
   }
   int close_result = TEMP_FAILURE_RETRY(Close());
   if (close_result != 0) {
-    LOG(::art::ERROR) << "CloseOrErase failed while closing a file.";
+    LOG(ERROR) << "CloseOrErase failed while closing a file.";
     Erase();
     return close_result;
   }
@@ -367,11 +367,11 @@
   DCHECK(!read_only_mode_);
   int flush_result = TEMP_FAILURE_RETRY(Flush());
   if (flush_result != 0) {
-    LOG(::art::ERROR) << "FlushClose failed while flushing a file.";
+    LOG(ERROR) << "FlushClose failed while flushing a file.";
   }
   int close_result = TEMP_FAILURE_RETRY(Close());
   if (close_result != 0) {
-    LOG(::art::ERROR) << "FlushClose failed while closing a file.";
+    LOG(ERROR) << "FlushClose failed while closing a file.";
   }
   return (flush_result != 0) ? flush_result : close_result;
 }
@@ -383,7 +383,7 @@
 bool FdFile::ClearContent() {
   DCHECK(!read_only_mode_);
   if (SetLength(0) < 0) {
-    PLOG(art::ERROR) << "Failed to reset the length";
+    PLOG(ERROR) << "Failed to reset the length";
     return false;
   }
   return ResetOffset();
@@ -393,7 +393,7 @@
   DCHECK(!read_only_mode_);
   off_t rc =  TEMP_FAILURE_RETRY(lseek(fd_, 0, SEEK_SET));
   if (rc == static_cast<off_t>(-1)) {
-    PLOG(art::ERROR) << "Failed to reset the offset";
+    PLOG(ERROR) << "Failed to reset the offset";
     return false;
   }
   return true;
diff --git a/runtime/check_jni.cc b/runtime/check_jni.cc
index 6683f13..a980535 100644
--- a/runtime/check_jni.cc
+++ b/runtime/check_jni.cc
@@ -275,7 +275,7 @@
       return false;
     }
     if (!Runtime::Current()->GetHeap()->IsValidObjectAddress(o)) {
-      Runtime::Current()->GetHeap()->DumpSpaces(LOG(ERROR));
+      Runtime::Current()->GetHeap()->DumpSpaces(LOG_STREAM(ERROR));
       AbortF("field operation on invalid %s: %p",
              ToStr<IndirectRefKind>(GetIndirectRefKind(java_object)).c_str(),
              java_object);
@@ -783,7 +783,7 @@
     }
 
     if (!Runtime::Current()->GetHeap()->IsValidObjectAddress(obj)) {
-      Runtime::Current()->GetHeap()->DumpSpaces(LOG(ERROR));
+      Runtime::Current()->GetHeap()->DumpSpaces(LOG_STREAM(ERROR));
       AbortF("%s is an invalid %s: %p (%p)",
              what, ToStr<IndirectRefKind>(GetIndirectRefKind(java_object)).c_str(),
              java_object, obj);
@@ -1109,7 +1109,7 @@
 
     mirror::Array* a = soa.Decode<mirror::Array*>(java_array);
     if (UNLIKELY(!Runtime::Current()->GetHeap()->IsValidObjectAddress(a))) {
-      Runtime::Current()->GetHeap()->DumpSpaces(LOG(ERROR));
+      Runtime::Current()->GetHeap()->DumpSpaces(LOG_STREAM(ERROR));
       AbortF("jarray is an invalid %s: %p (%p)",
              ToStr<IndirectRefKind>(GetIndirectRefKind(java_array)).c_str(),
              java_array, a);
@@ -1146,7 +1146,7 @@
     ArtField* f = soa.DecodeField(fid);
     // TODO: Better check here.
     if (!Runtime::Current()->GetHeap()->IsValidObjectAddress(f->GetDeclaringClass())) {
-      Runtime::Current()->GetHeap()->DumpSpaces(LOG(ERROR));
+      Runtime::Current()->GetHeap()->DumpSpaces(LOG_STREAM(ERROR));
       AbortF("invalid jfieldID: %p", fid);
       return nullptr;
     }
@@ -1162,7 +1162,7 @@
     ArtMethod* m = soa.DecodeMethod(mid);
     // TODO: Better check here.
     if (!Runtime::Current()->GetHeap()->IsValidObjectAddress(m->GetDeclaringClass())) {
-      Runtime::Current()->GetHeap()->DumpSpaces(LOG(ERROR));
+      Runtime::Current()->GetHeap()->DumpSpaces(LOG_STREAM(ERROR));
       AbortF("invalid jmethodID: %p", mid);
       return nullptr;
     }
diff --git a/runtime/class_linker.cc b/runtime/class_linker.cc
index 845e39a..678abe0 100644
--- a/runtime/class_linker.cc
+++ b/runtime/class_linker.cc
@@ -7920,7 +7920,7 @@
   explicit DumpClassVisitor(int flags) : flags_(flags) {}
 
   bool operator()(mirror::Class* klass) OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) {
-    klass->DumpClass(LOG(ERROR), flags_);
+    klass->DumpClass(LOG_STREAM(ERROR), flags_);
     return true;
   }
 
diff --git a/runtime/common_runtime_test.cc b/runtime/common_runtime_test.cc
index 8a48604..11722b2 100644
--- a/runtime/common_runtime_test.cc
+++ b/runtime/common_runtime_test.cc
@@ -58,7 +58,7 @@
   setenv("ANDROID_LOG_TAGS", "*:e", 1);
 
   art::InitLogging(argv);
-  LOG(::art::INFO) << "Running main() from common_runtime_test.cc...";
+  LOG(INFO) << "Running main() from common_runtime_test.cc...";
   testing::InitGoogleTest(&argc, argv);
   return RUN_ALL_TESTS();
 }
diff --git a/runtime/dex_file.cc b/runtime/dex_file.cc
index 409fbba..0af086c 100644
--- a/runtime/dex_file.cc
+++ b/runtime/dex_file.cc
@@ -323,7 +323,7 @@
   ScopedTrace trace("Dex file open from Zip Archive " + std::string(location));
   CHECK(!location.empty());
   std::unique_ptr<ZipEntry> zip_entry(zip_archive.Find(entry_name, error_msg));
-  if (zip_entry.get() == nullptr) {
+  if (zip_entry == nullptr) {
     *error_code = ZipOpenErrorCode::kEntryNotFound;
     return nullptr;
   }
@@ -333,7 +333,7 @@
     return nullptr;
   }
   std::unique_ptr<MemMap> map(zip_entry->ExtractToMemMap(location.c_str(), entry_name, error_msg));
-  if (map.get() == nullptr) {
+  if (map == nullptr) {
     *error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", entry_name, location.c_str(),
                               error_msg->c_str());
     *error_code = ZipOpenErrorCode::kExtractToMemoryError;
@@ -349,9 +349,15 @@
                                                  verify_checksum,
                                                  error_msg,
                                                  &verify_result);
-  if (dex_file != nullptr) {
-    dex_file->mem_map_.reset(map.release());
+  if (dex_file == nullptr) {
+    if (verify_result == VerifyResult::kVerifyNotAttempted) {
+      *error_code = ZipOpenErrorCode::kDexFileError;
+    } else {
+      *error_code = ZipOpenErrorCode::kVerifyError;
+    }
+    return nullptr;
   }
+  dex_file->mem_map_.reset(map.release());
   if (!dex_file->DisableWrite()) {
     *error_msg = StringPrintf("Failed to make dex file '%s' read only", location.c_str());
     *error_code = ZipOpenErrorCode::kMakeReadOnlyError;
@@ -440,6 +446,9 @@
                                              bool verify_checksum,
                                              std::string* error_msg,
                                              VerifyResult* verify_result) {
+  if (verify_result != nullptr) {
+    *verify_result = VerifyResult::kVerifyNotAttempted;
+  }
   std::unique_ptr<DexFile> dex_file(new DexFile(base,
                                                 size,
                                                 location,
diff --git a/runtime/dex_file.h b/runtime/dex_file.h
index 28aeb1e..29b8c3a 100644
--- a/runtime/dex_file.h
+++ b/runtime/dex_file.h
@@ -1049,6 +1049,7 @@
                                                               ZipOpenErrorCode* error_code);
 
   enum class VerifyResult {  // private
+    kVerifyNotAttempted,
     kVerifySucceeded,
     kVerifyFailed
   };
diff --git a/runtime/dex_file_test.cc b/runtime/dex_file_test.cc
index 3dffc40..8dd5f37 100644
--- a/runtime/dex_file_test.cc
+++ b/runtime/dex_file_test.cc
@@ -112,6 +112,55 @@
   "AGNsYXNzZXMuZGV4VVQFAANkDaFXdXgLAAEE5AMBAASIEwAAUEsFBgAAAAABAAEAUQAAAEUAAAAA"
   "AA==";
 
+static const char kRawZipClassesDexPresent[] =
+  "UEsDBBQAAAAIANVRN0ms99lIMQEAACACAAALABwAY2xhc3Nlcy5kZXhVVAkAAwFj5VcUY+VXdXgL"
+  "AAEE5AMBAASIEwAAS0mt4DIwtmDYYdV9csrcks83lpxZN2vD8f/1p1beWX3vabQCEwNDAQMDQ0WY"
+  "iRADFPQwMjBwMEDEWYB4AhADlTEsYEAAZiDeAcRApQwXgNgAyPgApJWAtBYQGwGxGxAHAnEIEEcA"
+  "cS4jRD0T1Fw2KM0ENZMVypZhRLIIqIMdag9CBMFnhtJ1jDA5RrBcMSPE7AIBkIl8UFGgP6Fu4IOa"
+  "wczAZpOZl1lix8Dm45uYmWfNIOSTlViWqJ+TmJeu75+UlZpcYs3ACZLSA4kzMIYxMIX5MAhHIykL"
+  "LinKzEu3ZmDJBSoDOZiPgRlMgv3T2MDygZGRs4OJB8n9MBoWzrAwmQD1Eyy8WZHCmg0pvBkVIGpA"
+  "Yc4oABEHhRuTAsRMUDwwQ9WAwoJBAaIGHE5Q9aB4BgBQSwECHgMUAAAACADVUTdJrPfZSDEBAAAg"
+  "AgAACwAYAAAAAAAAAAAAoIEAAAAAY2xhc3Nlcy5kZXhVVAUAAwFj5Vd1eAsAAQTkAwEABIgTAABQ"
+  "SwUGAAAAAAEAAQBRAAAAdgEAAAAA";
+
+static const char kRawZipClassesDexAbsent[] =
+  "UEsDBBQAAAAIANVRN0ms99lIMQEAACACAAAOABwAbm90Y2xhc3Nlcy5kZXhVVAkAAwFj5VcUY+VX"
+  "dXgLAAEE5AMBAASIEwAAS0mt4DIwtmDYYdV9csrcks83lpxZN2vD8f/1p1beWX3vabQCEwNDAQMD"
+  "Q0WYiRADFPQwMjBwMEDEWYB4AhADlTEsYEAAZiDeAcRApQwXgNgAyPgApJWAtBYQGwGxGxAHAnEI"
+  "EEcAcS4jRD0T1Fw2KM0ENZMVypZhRLIIqIMdag9CBMFnhtJ1jDA5RrBcMSPE7AIBkIl8UFGgP6Fu"
+  "4IOawczAZpOZl1lix8Dm45uYmWfNIOSTlViWqJ+TmJeu75+UlZpcYs3ACZLSA4kzMIYxMIX5MAhH"
+  "IykLLinKzEu3ZmDJBSoDOZiPgRlMgv3T2MDygZGRs4OJB8n9MBoWzrAwmQD1Eyy8WZHCmg0pvBkV"
+  "IGpAYc4oABEHhRuTAsRMUDwwQ9WAwoJBAaIGHE5Q9aB4BgBQSwECHgMUAAAACADVUTdJrPfZSDEB"
+  "AAAgAgAADgAYAAAAAAAAAAAAoIEAAAAAbm90Y2xhc3Nlcy5kZXhVVAUAAwFj5Vd1eAsAAQTkAwEA"
+  "BIgTAABQSwUGAAAAAAEAAQBUAAAAeQEAAAAA";
+
+static const char kRawZipThreeDexFiles[] =
+  "UEsDBBQAAAAIAP1WN0ms99lIMQEAACACAAAMABwAY2xhc3NlczIuZGV4VVQJAAOtbOVXrWzlV3V4"
+  "CwABBOQDAQAEiBMAAEtJreAyMLZg2GHVfXLK3JLPN5acWTdrw/H/9adW3ll972m0AhMDQwEDA0NF"
+  "mIkQAxT0MDIwcDBAxFmAeAIQA5UxLGBAAGYg3gHEQKUMF4DYAMj4AKSVgLQWEBsBsRsQBwJxCBBH"
+  "AHEuI0Q9E9RcNijNBDWTFcqWYUSyCKiDHWoPQgTBZ4bSdYwwOUawXDEjxOwCAZCJfFBRoD+hbuCD"
+  "msHMwGaTmZdZYsfA5uObmJlnzSDkk5VYlqifk5iXru+flJWaXGLNwAmS0gOJMzCGMTCF+TAIRyMp"
+  "Cy4pysxLt2ZgyQUqAzmYj4EZTIL909jA8oGRkbODiQfJ/TAaFs6wMJkA9RMsvFmRwpoNKbwZFSBq"
+  "QGHOKAARB4UbkwLETFA8MEPVgMKCQQGiBhxOUPWgeAYAUEsDBBQAAAAIAABXN0ms99lIMQEAACAC"
+  "AAAMABwAY2xhc3NlczMuZGV4VVQJAAOvbOVXr2zlV3V4CwABBOQDAQAEiBMAAEtJreAyMLZg2GHV"
+  "fXLK3JLPN5acWTdrw/H/9adW3ll972m0AhMDQwEDA0NFmIkQAxT0MDIwcDBAxFmAeAIQA5UxLGBA"
+  "AGYg3gHEQKUMF4DYAMj4AKSVgLQWEBsBsRsQBwJxCBBHAHEuI0Q9E9RcNijNBDWTFcqWYUSyCKiD"
+  "HWoPQgTBZ4bSdYwwOUawXDEjxOwCAZCJfFBRoD+hbuCDmsHMwGaTmZdZYsfA5uObmJlnzSDkk5VY"
+  "lqifk5iXru+flJWaXGLNwAmS0gOJMzCGMTCF+TAIRyMpCy4pysxLt2ZgyQUqAzmYj4EZTIL909jA"
+  "8oGRkbODiQfJ/TAaFs6wMJkA9RMsvFmRwpoNKbwZFSBqQGHOKAARB4UbkwLETFA8MEPVgMKCQQGi"
+  "BhxOUPWgeAYAUEsDBBQAAAAIANVRN0ms99lIMQEAACACAAALABwAY2xhc3Nlcy5kZXhVVAkAAwFj"
+  "5VetbOVXdXgLAAEE5AMBAASIEwAAS0mt4DIwtmDYYdV9csrcks83lpxZN2vD8f/1p1beWX3vabQC"
+  "EwNDAQMDQ0WYiRADFPQwMjBwMEDEWYB4AhADlTEsYEAAZiDeAcRApQwXgNgAyPgApJWAtBYQGwGx"
+  "GxAHAnEIEEcAcS4jRD0T1Fw2KM0ENZMVypZhRLIIqIMdag9CBMFnhtJ1jDA5RrBcMSPE7AIBkIl8"
+  "UFGgP6Fu4IOawczAZpOZl1lix8Dm45uYmWfNIOSTlViWqJ+TmJeu75+UlZpcYs3ACZLSA4kzMIYx"
+  "MIX5MAhHIykLLinKzEu3ZmDJBSoDOZiPgRlMgv3T2MDygZGRs4OJB8n9MBoWzrAwmQD1Eyy8WZHC"
+  "mg0pvBkVIGpAYc4oABEHhRuTAsRMUDwwQ9WAwoJBAaIGHE5Q9aB4BgBQSwECHgMUAAAACAD9VjdJ"
+  "rPfZSDEBAAAgAgAADAAYAAAAAAAAAAAAoIEAAAAAY2xhc3NlczIuZGV4VVQFAAOtbOVXdXgLAAEE"
+  "5AMBAASIEwAAUEsBAh4DFAAAAAgAAFc3Saz32UgxAQAAIAIAAAwAGAAAAAAAAAAAAKCBdwEAAGNs"
+  "YXNzZXMzLmRleFVUBQADr2zlV3V4CwABBOQDAQAEiBMAAFBLAQIeAxQAAAAIANVRN0ms99lIMQEA"
+  "ACACAAALABgAAAAAAAAAAACgge4CAABjbGFzc2VzLmRleFVUBQADAWPlV3V4CwABBOQDAQAEiBMA"
+  "AFBLBQYAAAAAAwADAPUAAABkBAAAAAA=";
+
 static void DecodeAndWriteDexFile(const char* base64, const char* location) {
   // decode base64
   CHECK(base64 != nullptr);
@@ -129,22 +178,36 @@
   }
 }
 
-static std::unique_ptr<const DexFile> OpenDexFileBase64(const char* base64,
-                                                        const char* location) {
+static bool OpenDexFilesBase64(const char* base64,
+                               const char* location,
+                               std::vector<std::unique_ptr<const DexFile>>* dex_files,
+                               std::string* error_msg) {
   DecodeAndWriteDexFile(base64, location);
 
-  // read dex file
+  // read dex file(s)
   ScopedObjectAccess soa(Thread::Current());
   static constexpr bool kVerifyChecksum = true;
-  std::string error_msg;
   std::vector<std::unique_ptr<const DexFile>> tmp;
-  bool success = DexFile::Open(location, location, kVerifyChecksum, &error_msg, &tmp);
+  bool success = DexFile::Open(location, location, kVerifyChecksum, error_msg, &tmp);
+  if (success) {
+    for (std::unique_ptr<const DexFile>& dex_file : tmp) {
+      EXPECT_EQ(PROT_READ, dex_file->GetPermissions());
+      EXPECT_TRUE(dex_file->IsReadOnly());
+    }
+    *dex_files = std::move(tmp);
+  }
+  return success;
+}
+
+static std::unique_ptr<const DexFile> OpenDexFileBase64(const char* base64,
+                                                        const char* location) {
+  // read dex files.
+  std::string error_msg;
+  std::vector<std::unique_ptr<const DexFile>> dex_files;
+  bool success = OpenDexFilesBase64(base64, location, &dex_files, &error_msg);
   CHECK(success) << error_msg;
-  EXPECT_EQ(1U, tmp.size());
-  std::unique_ptr<const DexFile> dex_file = std::move(tmp[0]);
-  EXPECT_EQ(PROT_READ, dex_file->GetPermissions());
-  EXPECT_TRUE(dex_file->IsReadOnly());
-  return dex_file;
+  EXPECT_EQ(1U, dex_files.size());
+  return std::move(dex_files[0]);
 }
 
 static std::unique_ptr<const DexFile> OpenDexFileInMemoryBase64(const char* base64,
@@ -456,4 +519,31 @@
   EXPECT_EQ(":classes8.dex", DexFile::GetMultiDexSuffix("/foo/bar/baz.jar:classes8.dex"));
 }
 
+TEST_F(DexFileTest, ZipOpenClassesPresent) {
+  ScratchFile tmp;
+  std::vector<std::unique_ptr<const DexFile>> dex_files;
+  std::string error_msg;
+  ASSERT_TRUE(OpenDexFilesBase64(kRawZipClassesDexPresent, tmp.GetFilename().c_str(), &dex_files,
+                                 &error_msg));
+  EXPECT_EQ(dex_files.size(), 1u);
+}
+
+TEST_F(DexFileTest, ZipOpenClassesAbsent) {
+  ScratchFile tmp;
+  std::vector<std::unique_ptr<const DexFile>> dex_files;
+  std::string error_msg;
+  ASSERT_FALSE(OpenDexFilesBase64(kRawZipClassesDexAbsent, tmp.GetFilename().c_str(), &dex_files,
+                                  &error_msg));
+  EXPECT_EQ(dex_files.size(), 0u);
+}
+
+TEST_F(DexFileTest, ZipOpenThreeDexFiles) {
+  ScratchFile tmp;
+  std::vector<std::unique_ptr<const DexFile>> dex_files;
+  std::string error_msg;
+  ASSERT_TRUE(OpenDexFilesBase64(kRawZipThreeDexFiles, tmp.GetFilename().c_str(), &dex_files,
+                                 &error_msg));
+  EXPECT_EQ(dex_files.size(), 3u);
+}
+
 }  // namespace art
diff --git a/runtime/entrypoints/quick/quick_deoptimization_entrypoints.cc b/runtime/entrypoints/quick/quick_deoptimization_entrypoints.cc
index 5b9d03b..343343f 100644
--- a/runtime/entrypoints/quick/quick_deoptimization_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_deoptimization_entrypoints.cc
@@ -36,7 +36,7 @@
       // specialized visitor that will show whether a method is Quick or Shadow.
     } else {
       LOG(INFO) << "Deopting:";
-      self->Dump(LOG(INFO));
+      self->Dump(LOG_STREAM(INFO));
     }
   }
 
diff --git a/runtime/fault_handler.cc b/runtime/fault_handler.cc
index f86921c..f9345b6 100644
--- a/runtime/fault_handler.cc
+++ b/runtime/fault_handler.cc
@@ -438,7 +438,7 @@
     // above.
     abort();
 #endif
-    self->DumpJavaStack(LOG(ERROR));
+    self->DumpJavaStack(LOG_STREAM(ERROR));
   }
 
   return false;  // Return false since we want to propagate the fault to the main signal handler.
diff --git a/runtime/gc/accounting/mod_union_table.cc b/runtime/gc/accounting/mod_union_table.cc
index 24a2c17..3b6750e 100644
--- a/runtime/gc/accounting/mod_union_table.cc
+++ b/runtime/gc/accounting/mod_union_table.cc
@@ -283,7 +283,7 @@
           << from_space->GetGcRetentionPolicy();
       LOG(INFO) << "ToSpace " << to_space->GetName() << " type "
           << to_space->GetGcRetentionPolicy();
-      heap->DumpSpaces(LOG(INFO));
+      heap->DumpSpaces(LOG_STREAM(INFO));
       LOG(FATAL) << "FATAL ERROR";
     }
   }
diff --git a/runtime/gc/allocator/dlmalloc.cc b/runtime/gc/allocator/dlmalloc.cc
index dc4e312..0c84224 100644
--- a/runtime/gc/allocator/dlmalloc.cc
+++ b/runtime/gc/allocator/dlmalloc.cc
@@ -37,6 +37,9 @@
 #pragma GCC diagnostic ignored "-Wempty-body"
 #pragma GCC diagnostic ignored "-Wstrict-aliasing"
 #include "../../../external/dlmalloc/malloc.c"
+// Note: malloc.c uses a DEBUG define to drive debug code. This interferes with the DEBUG severity
+//       of libbase, so undefine it now.
+#undef DEBUG
 #pragma GCC diagnostic pop
 
 static void* art_heap_morecore(void* m, intptr_t increment) {
@@ -44,11 +47,11 @@
 }
 
 static void art_heap_corruption(const char* function) {
-  LOG(::art::FATAL) << "Corrupt heap detected in: " << function;
+  LOG(FATAL) << "Corrupt heap detected in: " << function;
 }
 
 static void art_heap_usage_error(const char* function, void* p) {
-  LOG(::art::FATAL) << "Incorrect use of function '" << function << "' argument " << p
+  LOG(FATAL) << "Incorrect use of function '" << function << "' argument " << p
       << " not expected";
 }
 
@@ -69,7 +72,7 @@
     int rc = madvise(start, length, MADV_DONTNEED);
     if (UNLIKELY(rc != 0)) {
       errno = rc;
-      PLOG(::art::FATAL) << "madvise failed during heap trimming";
+      PLOG(FATAL) << "madvise failed during heap trimming";
     }
     size_t* reclaimed = reinterpret_cast<size_t*>(arg);
     *reclaimed += length;
diff --git a/runtime/gc/collector/concurrent_copying.cc b/runtime/gc/collector/concurrent_copying.cc
index 2750fea..ab8942a 100644
--- a/runtime/gc/collector/concurrent_copying.cc
+++ b/runtime/gc/collector/concurrent_copying.cc
@@ -430,7 +430,7 @@
   TimingLogger::ScopedTiming split("FlipThreadRoots", GetTimings());
   if (kVerboseMode) {
     LOG(INFO) << "time=" << region_space_->Time();
-    region_space_->DumpNonFreeRegions(LOG(INFO));
+    region_space_->DumpNonFreeRegions(LOG_STREAM(INFO));
   }
   Thread* self = Thread::Current();
   Locks::mutator_lock_->AssertNotHeld(self);
@@ -447,7 +447,7 @@
   QuasiAtomic::ThreadFenceForConstructor();
   if (kVerboseMode) {
     LOG(INFO) << "time=" << region_space_->Time();
-    region_space_->DumpNonFreeRegions(LOG(INFO));
+    region_space_->DumpNonFreeRegions(LOG_STREAM(INFO));
     LOG(INFO) << "GC end of FlipThreadRoots";
   }
 }
@@ -1622,7 +1622,7 @@
       if (obj != nullptr) {
         LogFromSpaceRefHolder(obj, offset);
       }
-      ref->GetLockWord(false).Dump(LOG(INTERNAL_FATAL));
+      ref->GetLockWord(false).Dump(LOG_STREAM(FATAL_WITHOUT_ABORT));
       CHECK(false) << "Found from-space ref " << ref << " " << PrettyTypeOf(ref);
     } else {
       AssertToSpaceInvariantInNonMovingSpace(obj, ref);
@@ -1645,13 +1645,13 @@
   template <class MirrorType>
   void VisitRoot(mirror::Object** root)
       REQUIRES_SHARED(Locks::mutator_lock_) {
-    LOG(INTERNAL_FATAL) << "root=" << root << " ref=" << *root;
+    LOG(FATAL_WITHOUT_ABORT) << "root=" << root << " ref=" << *root;
   }
 
   template <class MirrorType>
   void VisitRoot(mirror::CompressedReference<MirrorType>* root)
       REQUIRES_SHARED(Locks::mutator_lock_) {
-    LOG(INTERNAL_FATAL) << "root=" << root << " ref=" << root->AsMirrorPtr();
+    LOG(FATAL_WITHOUT_ABORT) << "root=" << root << " ref=" << root->AsMirrorPtr();
   }
 };
 
@@ -1670,19 +1670,19 @@
         // No info.
       } else if (gc_root_source->HasArtField()) {
         ArtField* field = gc_root_source->GetArtField();
-        LOG(INTERNAL_FATAL) << "gc root in field " << field << " " << PrettyField(field);
+        LOG(FATAL_WITHOUT_ABORT) << "gc root in field " << field << " " << PrettyField(field);
         RootPrinter root_printer;
         field->VisitRoots(root_printer);
       } else if (gc_root_source->HasArtMethod()) {
         ArtMethod* method = gc_root_source->GetArtMethod();
-        LOG(INTERNAL_FATAL) << "gc root in method " << method << " " << PrettyMethod(method);
+        LOG(FATAL_WITHOUT_ABORT) << "gc root in method " << method << " " << PrettyMethod(method);
         RootPrinter root_printer;
         method->VisitRoots(root_printer, kRuntimePointerSize);
       }
-      ref->GetLockWord(false).Dump(LOG(INTERNAL_FATAL));
-      region_space_->DumpNonFreeRegions(LOG(INTERNAL_FATAL));
-      PrintFileToLog("/proc/self/maps", LogSeverity::INTERNAL_FATAL);
-      MemMap::DumpMaps(LOG(INTERNAL_FATAL), true);
+      ref->GetLockWord(false).Dump(LOG_STREAM(FATAL_WITHOUT_ABORT));
+      region_space_->DumpNonFreeRegions(LOG_STREAM(FATAL_WITHOUT_ABORT));
+      PrintFileToLog("/proc/self/maps", LogSeverity::FATAL_WITHOUT_ABORT);
+      MemMap::DumpMaps(LOG_STREAM(FATAL_WITHOUT_ABORT), true);
       CHECK(false) << "Found from-space ref " << ref << " " << PrettyTypeOf(ref);
     } else {
       AssertToSpaceInvariantInNonMovingSpace(nullptr, ref);
diff --git a/runtime/gc/collector/mark_compact.cc b/runtime/gc/collector/mark_compact.cc
index d866106..6d2f009 100644
--- a/runtime/gc/collector/mark_compact.cc
+++ b/runtime/gc/collector/mark_compact.cc
@@ -139,7 +139,7 @@
           REQUIRES_SHARED(Locks::mutator_lock_) {
         // Marking a large object, make sure its aligned as a sanity check.
         if (!IsAligned<kPageSize>(ref)) {
-          Runtime::Current()->GetHeap()->DumpSpaces(LOG(ERROR));
+          Runtime::Current()->GetHeap()->DumpSpaces(LOG_STREAM(ERROR));
           LOG(FATAL) << ref;
         }
       };
diff --git a/runtime/gc/collector/mark_sweep.cc b/runtime/gc/collector/mark_sweep.cc
index cbc4dc1..ad3dd33 100644
--- a/runtime/gc/collector/mark_sweep.cc
+++ b/runtime/gc/collector/mark_sweep.cc
@@ -413,11 +413,11 @@
     if (UNLIKELY(obj == nullptr || !IsAligned<kPageSize>(obj) ||
                  (kIsDebugBuild && large_object_space != nullptr &&
                      !large_object_space->Contains(obj)))) {
-      LOG(INTERNAL_FATAL) << "Tried to mark " << obj << " not contained by any spaces";
+      LOG(FATAL_WITHOUT_ABORT) << "Tried to mark " << obj << " not contained by any spaces";
       if (holder_ != nullptr) {
         size_t holder_size = holder_->SizeOf();
         ArtField* field = holder_->FindFieldByOffset(offset_);
-        LOG(INTERNAL_FATAL) << "Field info: "
+        LOG(FATAL_WITHOUT_ABORT) << "Field info: "
                             << " holder=" << holder_
                             << " holder is "
                             << (mark_sweep_->GetHeap()->IsLiveObjectLocked(holder_)
@@ -440,13 +440,13 @@
         // Print the memory content of the holder.
         for (size_t i = 0; i < holder_size / sizeof(uint32_t); ++i) {
           uint32_t* p = reinterpret_cast<uint32_t*>(holder_);
-          LOG(INTERNAL_FATAL) << &p[i] << ": " << "holder+" << (i * sizeof(uint32_t)) << " = "
+          LOG(FATAL_WITHOUT_ABORT) << &p[i] << ": " << "holder+" << (i * sizeof(uint32_t)) << " = "
                               << std::hex << p[i];
         }
       }
-      PrintFileToLog("/proc/self/maps", LogSeverity::INTERNAL_FATAL);
-      MemMap::DumpMaps(LOG(INTERNAL_FATAL), true);
-      LOG(INTERNAL_FATAL) << "Attempting see if it's a bad thread root";
+      PrintFileToLog("/proc/self/maps", LogSeverity::FATAL_WITHOUT_ABORT);
+      MemMap::DumpMaps(LOG_STREAM(FATAL_WITHOUT_ABORT), true);
+      LOG(FATAL_WITHOUT_ABORT) << "Attempting see if it's a bad thread root";
       mark_sweep_->VerifySuspendedThreadRoots();
       LOG(FATAL) << "Can't mark invalid object";
     }
@@ -574,7 +574,7 @@
     if (heap->GetLiveBitmap()->GetContinuousSpaceBitmap(root) == nullptr) {
       space::LargeObjectSpace* large_object_space = heap->GetLargeObjectsSpace();
       if (large_object_space != nullptr && !large_object_space->Contains(root)) {
-        LOG(INTERNAL_FATAL) << "Found invalid root: " << root << " " << info;
+        LOG(FATAL_WITHOUT_ABORT) << "Found invalid root: " << root << " " << info;
       }
     }
   }
diff --git a/runtime/gc/collector/semi_space.cc b/runtime/gc/collector/semi_space.cc
index 47e6ca3..2e97172 100644
--- a/runtime/gc/collector/semi_space.cc
+++ b/runtime/gc/collector/semi_space.cc
@@ -296,7 +296,7 @@
       REQUIRES_SHARED(Locks::mutator_lock_) ALWAYS_INLINE {
     mirror::Object* ref = obj->GetFieldObject<mirror::Object>(offset);
     if (from_space_->HasAddress(ref)) {
-      Runtime::Current()->GetHeap()->DumpObject(LOG(INFO), obj);
+      Runtime::Current()->GetHeap()->DumpObject(LOG_STREAM(INFO), obj);
       LOG(FATAL) << ref << " found in from space";
     }
   }
diff --git a/runtime/gc/heap.cc b/runtime/gc/heap.cc
index 11d4af8..4e6dd2b 100644
--- a/runtime/gc/heap.cc
+++ b/runtime/gc/heap.cc
@@ -630,7 +630,7 @@
     bool no_gap = MemMap::CheckNoGaps(first_space->GetMemMap(), non_moving_space_->GetMemMap());
     if (!no_gap) {
       PrintFileToLog("/proc/self/maps", LogSeverity::ERROR);
-      MemMap::DumpMaps(LOG(ERROR), true);
+      MemMap::DumpMaps(LOG_STREAM(ERROR), true);
       LOG(FATAL) << "There's a gap between the image space and the non-moving space";
     }
   }
@@ -3157,14 +3157,14 @@
     // Dump mod-union tables.
     for (const auto& table_pair : mod_union_tables_) {
       accounting::ModUnionTable* mod_union_table = table_pair.second;
-      mod_union_table->Dump(LOG(ERROR) << mod_union_table->GetName() << ": ");
+      mod_union_table->Dump(LOG_STREAM(ERROR) << mod_union_table->GetName() << ": ");
     }
     // Dump remembered sets.
     for (const auto& table_pair : remembered_sets_) {
       accounting::RememberedSet* remembered_set = table_pair.second;
-      remembered_set->Dump(LOG(ERROR) << remembered_set->GetName() << ": ");
+      remembered_set->Dump(LOG_STREAM(ERROR) << remembered_set->GetName() << ": ");
     }
-    DumpSpaces(LOG(ERROR));
+    DumpSpaces(LOG_STREAM(ERROR));
   }
   return visitor.GetFailureCount();
 }
diff --git a/runtime/gc/reference_queue_test.cc b/runtime/gc/reference_queue_test.cc
index 35bf718..2a1635d 100644
--- a/runtime/gc/reference_queue_test.cc
+++ b/runtime/gc/reference_queue_test.cc
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include <sstream>
+
 #include "common_runtime_test.h"
 #include "reference_queue.h"
 #include "handle_scope-inl.h"
@@ -65,7 +67,9 @@
   StackHandleScope<20> hs(self);
   Mutex lock("Reference queue lock");
   ReferenceQueue queue(&lock);
-  queue.Dump(LOG(INFO));
+  std::ostringstream oss;
+  queue.Dump(oss);
+  LOG(INFO) << oss.str();
   auto weak_ref_class = hs.NewHandle(
       Runtime::Current()->GetClassLinker()->FindClass(self, "Ljava/lang/ref/WeakReference;",
                                                       ScopedNullHandle<mirror::ClassLoader>()));
@@ -78,10 +82,16 @@
   ASSERT_TRUE(ref1.Get() != nullptr);
   auto ref2(hs.NewHandle(finalizer_ref_class->AllocObject(self)->AsReference()));
   ASSERT_TRUE(ref2.Get() != nullptr);
+
   queue.EnqueueReference(ref1.Get());
-  queue.Dump(LOG(INFO));
+  oss.str("");
+  queue.Dump(oss);
+  LOG(INFO) << oss.str();
+
   queue.EnqueueReference(ref2.Get());
-  queue.Dump(LOG(INFO));
+  oss.str("");
+  queue.Dump(oss);
+  LOG(INFO) << oss.str();
 }
 
 }  // namespace gc
diff --git a/runtime/gc/space/image_space.cc b/runtime/gc/space/image_space.cc
index 9c91732..a40e408 100644
--- a/runtime/gc/space/image_space.cc
+++ b/runtime/gc/space/image_space.cc
@@ -728,7 +728,7 @@
 
     VLOG(image) << "ImageSpace::Init exiting " << *space.get();
     if (VLOG_IS_ON(image)) {
-      logger.Dump(LOG(INFO));
+      logger.Dump(LOG_STREAM(INFO));
     }
     return space;
   }
@@ -1298,7 +1298,7 @@
       }
     }
     if (VLOG_IS_ON(image)) {
-      logger.Dump(LOG(INFO));
+      logger.Dump(LOG_STREAM(INFO));
     }
     return true;
   }
diff --git a/runtime/gc/space/large_object_space.cc b/runtime/gc/space/large_object_space.cc
index 010f677..16d1f93 100644
--- a/runtime/gc/space/large_object_space.cc
+++ b/runtime/gc/space/large_object_space.cc
@@ -192,7 +192,7 @@
   auto it = large_objects_.find(ptr);
   if (UNLIKELY(it == large_objects_.end())) {
     ScopedObjectAccess soa(self);
-    Runtime::Current()->GetHeap()->DumpSpaces(LOG(INTERNAL_FATAL));
+    Runtime::Current()->GetHeap()->DumpSpaces(LOG_STREAM(FATAL_WITHOUT_ABORT));
     LOG(FATAL) << "Attempted to free large object " << ptr << " which was not live";
   }
   MemMap* mem_map = it->second.mem_map;
diff --git a/runtime/gc/space/large_object_space_test.cc b/runtime/gc/space/large_object_space_test.cc
index ad38724..2544914 100644
--- a/runtime/gc/space/large_object_space_test.cc
+++ b/runtime/gc/space/large_object_space_test.cc
@@ -98,7 +98,9 @@
       }
     }
     // Test that dump doesn't crash.
-    los->Dump(LOG(INFO));
+    std::ostringstream oss;
+    los->Dump(oss);
+    LOG(INFO) << oss.str();
 
     size_t bytes_allocated = 0, bytes_tl_bulk_allocated;
     // Checks that the coalescing works.
diff --git a/runtime/gc/space/region_space.cc b/runtime/gc/space/region_space.cc
index e24741a..23cae7c 100644
--- a/runtime/gc/space/region_space.cc
+++ b/runtime/gc/space/region_space.cc
@@ -38,7 +38,7 @@
   if (mem_map.get() == nullptr) {
     LOG(ERROR) << "Failed to allocate pages for alloc space (" << name << ") of size "
         << PrettySize(capacity) << " with message " << error_msg;
-    MemMap::DumpMaps(LOG(ERROR));
+    MemMap::DumpMaps(LOG_STREAM(ERROR));
     return nullptr;
   }
   return new RegionSpace(name, mem_map.release());
diff --git a/runtime/indirect_reference_table.cc b/runtime/indirect_reference_table.cc
index 4f81b59..1f39a1e 100644
--- a/runtime/indirect_reference_table.cc
+++ b/runtime/indirect_reference_table.cc
@@ -188,7 +188,7 @@
         ScopedObjectAccess soa(self);
         LOG(WARNING) << "Attempt to remove non-JNI local reference, dumping thread";
         if (kDumpStackOnNonLocalReference) {
-          self->Dump(LOG(WARNING));
+          self->Dump(LOG_STREAM(WARNING));
         }
       }
       return true;
diff --git a/runtime/interpreter/mterp/mterp.cc b/runtime/interpreter/mterp/mterp.cc
index a8c7d15..cf8d4bd 100644
--- a/runtime/interpreter/mterp/mterp.cc
+++ b/runtime/interpreter/mterp/mterp.cc
@@ -38,8 +38,8 @@
   int interp_size = (uintptr_t) artMterpAsmInstructionEnd -
                     (uintptr_t) artMterpAsmInstructionStart;
   if ((interp_size == 0) || (interp_size != (art::kNumPackedOpcodes * width))) {
-      LOG(art::FATAL) << "ERROR: unexpected asm interp size " << interp_size
-                      << "(did an instruction handler exceed " << width << " bytes?)";
+      LOG(FATAL) << "ERROR: unexpected asm interp size " << interp_size
+                 << "(did an instruction handler exceed " << width << " bytes?)";
   }
 }
 
diff --git a/runtime/interpreter/unstarted_runtime.cc b/runtime/interpreter/unstarted_runtime.cc
index d505aea..98e358b 100644
--- a/runtime/interpreter/unstarted_runtime.cc
+++ b/runtime/interpreter/unstarted_runtime.cc
@@ -858,7 +858,7 @@
       ArtMethod* init_method = h_real_to_string_class->FindDirectMethod(
           "<init>", "()V", cl->GetImagePointerSize());
       if (init_method == nullptr) {
-        h_real_to_string_class->DumpClass(LOG(FATAL), mirror::Class::kDumpClassFullDetail);
+        h_real_to_string_class->DumpClass(LOG_STREAM(FATAL), mirror::Class::kDumpClassFullDetail);
       } else {
         JValue invoke_result;
         EnterInterpreterFromInvoke(self, init_method, h_real_to_string_obj.Get(), nullptr,
diff --git a/runtime/jdwp/jdwp_socket.cc b/runtime/jdwp/jdwp_socket.cc
index 2507fe9..3be7fd6 100644
--- a/runtime/jdwp/jdwp_socket.cc
+++ b/runtime/jdwp/jdwp_socket.cc
@@ -121,7 +121,7 @@
 
   netState->listenSock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
   if (netState->listenSock < 0) {
-    PLOG(probe ? ERROR : FATAL) << "Socket create failed";
+    PLOG(probe ? ::android::base::ERROR : ::android::base::FATAL) << "Socket create failed";
     goto fail;
   }
 
@@ -129,7 +129,8 @@
   {
     int one = 1;
     if (setsockopt(netState->listenSock, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)) < 0) {
-      PLOG(probe ? ERROR : FATAL) << "setsockopt(SO_REUSEADDR) failed";
+      PLOG(probe ? ::android::base::ERROR : ::android::base::FATAL)
+          << "setsockopt(SO_REUSEADDR) failed";
       goto fail;
     }
   }
@@ -143,14 +144,15 @@
   inet_aton("127.0.0.1", &addr.addrInet.sin_addr);
 
   if (bind(netState->listenSock, &addr.addrPlain, sizeof(addr)) != 0) {
-    PLOG(probe ? ERROR : FATAL) << "Attempt to bind to port " << port << " failed";
+    PLOG(probe ? ::android::base::ERROR : ::android::base::FATAL)
+        << "Attempt to bind to port " << port << " failed";
     goto fail;
   }
 
   netState->listenPort = port;
 
   if (listen(netState->listenSock, 5) != 0) {
-    PLOG(probe ? ERROR : FATAL) << "Listen failed";
+    PLOG(probe ? ::android::base::ERROR : ::android::base::FATAL) << "Listen failed";
     goto fail;
   }
 
diff --git a/runtime/jit/jit.cc b/runtime/jit/jit.cc
index d984f45..afa52ca 100644
--- a/runtime/jit/jit.cc
+++ b/runtime/jit/jit.cc
@@ -337,7 +337,7 @@
 Jit::~Jit() {
   DCHECK(!profile_saver_options_.IsEnabled() || !ProfileSaver::IsStarted());
   if (dump_info_on_shutdown_) {
-    DumpInfo(LOG(INFO));
+    DumpInfo(LOG_STREAM(INFO));
   }
   DeleteThreadPool();
   if (jit_compiler_handle_ != nullptr) {
diff --git a/runtime/jit/profile_saver.cc b/runtime/jit/profile_saver.cc
index 42916c3..a4bc3fc 100644
--- a/runtime/jit/profile_saver.cc
+++ b/runtime/jit/profile_saver.cc
@@ -447,7 +447,7 @@
     }
     instance_->shutting_down_ = true;
     if (dump_info) {
-      instance_->DumpInfo(LOG(INFO));
+      instance_->DumpInfo(LOG_STREAM(INFO));
     }
   }
 
diff --git a/runtime/jni_env_ext-inl.h b/runtime/jni_env_ext-inl.h
index dc6a3e8..685b056 100644
--- a/runtime/jni_env_ext-inl.h
+++ b/runtime/jni_env_ext-inl.h
@@ -32,9 +32,10 @@
     if (check_jni) {
       size_t entry_count = locals.Capacity();
       if (entry_count > 16) {
-        locals.Dump(LOG(WARNING) << "Warning: more than 16 JNI local references: "
-            << entry_count << " (most recent was a " << PrettyTypeOf(obj) << ")\n");
-        // TODO: LOG(FATAL) in a later release?
+        locals.Dump(LOG_STREAM(WARNING) << "Warning: more than 16 JNI local references: "
+                                        << entry_count << " (most recent was a "
+                                        << PrettyTypeOf(obj) << ")\n");
+      // TODO: LOG(FATAL) in a later release?
       }
     }
   }
diff --git a/runtime/jni_internal.cc b/runtime/jni_internal.cc
index d9cb1c6..59b2b07 100644
--- a/runtime/jni_internal.cc
+++ b/runtime/jni_internal.cc
@@ -100,8 +100,9 @@
 static void ReportInvalidJNINativeMethod(const ScopedObjectAccess& soa, mirror::Class* c,
                                          const char* kind, jint idx, bool return_errors)
     REQUIRES_SHARED(Locks::mutator_lock_) {
-  LOG(return_errors ? ERROR : FATAL) << "Failed to register native method in "
-      << PrettyDescriptor(c) << " in " << c->GetDexCache()->GetLocation()->ToModifiedUtf8()
+  LOG(return_errors ? ::android::base::ERROR : ::android::base::FATAL)
+      << "Failed to register native method in " << PrettyDescriptor(c)
+      << " in " << c->GetDexCache()->GetLocation()->ToModifiedUtf8()
       << ": " << kind << " is null at index " << idx;
   soa.Self()->ThrowNewExceptionF("Ljava/lang/NoSuchMethodError;",
                                  "%s is null at index %d", kind, idx);
@@ -2226,16 +2227,20 @@
       }
 
       if (m == nullptr) {
-        LOG(return_errors ? ERROR : INTERNAL_FATAL) << "Failed to register native method "
+        c->DumpClass(
+            LOG_STREAM(return_errors
+                           ? ::android::base::ERROR
+                           : ::android::base::FATAL_WITHOUT_ABORT),
+            mirror::Class::kDumpClassFullDetail);
+        LOG(return_errors ? ::android::base::ERROR : ::android::base::FATAL)
+            << "Failed to register native method "
             << PrettyDescriptor(c) << "." << name << sig << " in "
             << c->GetDexCache()->GetLocation()->ToModifiedUtf8();
-        // Safe to pass in LOG(FATAL) since the log object aborts in destructor and only goes
-        // out of scope after the DumpClass is done executing.
-        c->DumpClass(LOG(return_errors ? ERROR : FATAL), mirror::Class::kDumpClassFullDetail);
         ThrowNoSuchMethodError(soa, c, name, sig, "static or non-static");
         return JNI_ERR;
       } else if (!m->IsNative()) {
-        LOG(return_errors ? ERROR : FATAL) << "Failed to register non-native method "
+        LOG(return_errors ? ::android::base::ERROR : ::android::base::FATAL)
+            << "Failed to register non-native method "
             << PrettyDescriptor(c) << "." << name << sig
             << " as native";
         ThrowNoSuchMethodError(soa, c, name, sig, "native");
@@ -2478,7 +2483,7 @@
       } else if (kWarnJniAbort && memcmp(array_data, elements, bytes) != 0) {
         // Warn if we have JNI_ABORT and the arrays don't match since this is usually an error.
         LOG(WARNING) << "Possible incorrect JNI_ABORT in Release*ArrayElements";
-        soa.Self()->DumpJavaStack(LOG(WARNING));
+        soa.Self()->DumpJavaStack(LOG_STREAM(WARNING));
       }
     }
     if (mode != JNI_COMMIT) {
@@ -3042,7 +3047,7 @@
     os << "JNIWeakGlobalRefType";
     return os;
   default:
-    LOG(::art::FATAL) << "jobjectRefType[" << static_cast<int>(rhs) << "]";
+    LOG(FATAL) << "jobjectRefType[" << static_cast<int>(rhs) << "]";
     UNREACHABLE();
   }
 }
diff --git a/runtime/mirror/class.cc b/runtime/mirror/class.cc
index f21baed..2e5f532 100644
--- a/runtime/mirror/class.cc
+++ b/runtime/mirror/class.cc
@@ -147,8 +147,8 @@
 
 void Class::SetClassSize(uint32_t new_class_size) {
   if (kIsDebugBuild && new_class_size < GetClassSize()) {
-    DumpClass(LOG(INTERNAL_FATAL), kDumpClassFullDetail);
-    LOG(INTERNAL_FATAL) << new_class_size << " vs " << GetClassSize();
+    DumpClass(LOG_STREAM(FATAL_WITHOUT_ABORT), kDumpClassFullDetail);
+    LOG(FATAL_WITHOUT_ABORT) << new_class_size << " vs " << GetClassSize();
     LOG(FATAL) << "class=" << PrettyTypeOf(this);
   }
   // Not called within a transaction.
diff --git a/runtime/monitor.cc b/runtime/monitor.cc
index 22cc197..49b83a7 100644
--- a/runtime/monitor.cc
+++ b/runtime/monitor.cc
@@ -457,7 +457,7 @@
   if (!Runtime::Current()->IsStarted() || VLOG_IS_ON(monitor)) {
     std::ostringstream ss;
     self->Dump(ss);
-    LOG(Runtime::Current()->IsStarted() ? INFO : ERROR)
+    LOG(Runtime::Current()->IsStarted() ? ::android::base::INFO : ::android::base::ERROR)
         << self->GetException()->Dump() << "\n" << ss.str();
   }
   va_end(args);
diff --git a/runtime/native/dalvik_system_VMDebug.cc b/runtime/native/dalvik_system_VMDebug.cc
index 8f108fa..f09c067 100644
--- a/runtime/native/dalvik_system_VMDebug.cc
+++ b/runtime/native/dalvik_system_VMDebug.cc
@@ -240,8 +240,8 @@
   ScopedObjectAccess soa(env);
   LOG(INFO) << "--- reference table dump ---";
 
-  soa.Env()->DumpReferenceTables(LOG(INFO));
-  soa.Vm()->DumpReferenceTables(LOG(INFO));
+  soa.Env()->DumpReferenceTables(LOG_STREAM(INFO));
+  soa.Vm()->DumpReferenceTables(LOG_STREAM(INFO));
 
   LOG(INFO) << "---";
 }
diff --git a/runtime/openjdkjvm/Android.bp b/runtime/openjdkjvm/Android.bp
index 5ed1615..37112b6 100644
--- a/runtime/openjdkjvm/Android.bp
+++ b/runtime/openjdkjvm/Android.bp
@@ -19,7 +19,10 @@
     host_supported: true,
     srcs: ["OpenjdkJvm.cc"],
     include_dirs: ["art/runtime"],
-    shared_libs: ["libnativehelper"],
+    shared_libs: [
+        "libbase",
+        "libnativehelper"
+    ],
 }
 
 art_cc_library {
diff --git a/runtime/openjdkjvm/OpenjdkJvm.cc b/runtime/openjdkjvm/OpenjdkJvm.cc
index 54ec5d3..4a62ecd 100644
--- a/runtime/openjdkjvm/OpenjdkJvm.cc
+++ b/runtime/openjdkjvm/OpenjdkJvm.cc
@@ -61,10 +61,10 @@
 #undef LOG_TAG
 #define LOG_TAG "artopenjdk"
 
-using art::WARNING;
-using art::INFO;
-using art::ERROR;
-using art::FATAL;
+using ::android::base::WARNING;
+using ::android::base::INFO;
+using ::android::base::ERROR;
+using ::android::base::FATAL;
 
 /* posix open() with extensions; used by e.g. ZipFile */
 JNIEXPORT jint JVM_Open(const char* fname, jint flags, jint mode) {
diff --git a/runtime/openjdkjvmti/Android.bp b/runtime/openjdkjvmti/Android.bp
index 08272fa..d7a6c0a 100644
--- a/runtime/openjdkjvmti/Android.bp
+++ b/runtime/openjdkjvmti/Android.bp
@@ -20,7 +20,10 @@
     srcs: ["OpenjdkJvmTi.cc",
            "transform.cc"],
     include_dirs: ["art/runtime"],
-    shared_libs: ["libnativehelper"],
+    shared_libs: [
+        "libbase",
+        "libnativehelper",
+    ],
 }
 
 art_cc_library {
diff --git a/runtime/openjdkjvmti/transform.cc b/runtime/openjdkjvmti/transform.cc
index a0d79f3..b5622b5 100644
--- a/runtime/openjdkjvmti/transform.cc
+++ b/runtime/openjdkjvmti/transform.cc
@@ -201,8 +201,8 @@
   art::Handle<art::mirror::Class> loader_class(hs.NewHandle(h_class_loader->GetClass()));
   // Check if loader is a BaseDexClassLoader
   if (!loader_class->IsSubClass(base_dex_loader_class.Get())) {
-    LOG(art::ERROR) << "The classloader is not a BaseDexClassLoader which is currently the only "
-                    << "supported class loader type!";
+    LOG(ERROR) << "The classloader is not a BaseDexClassLoader which is currently the only "
+               << "supported class loader type!";
     return false;
   }
   art::Handle<art::mirror::Object> path_list(
@@ -333,7 +333,7 @@
     // Find dalvik.system.DexFile that represents the dex file we are changing.
     if (!FindDalvikSystemDexFileAndLoaderForClass(klass, &dex_file_ptr, &class_loader_ptr)) {
       self->TransitionFromRunnableToSuspended(old_state);
-      LOG(art::ERROR) << "Could not find DexFile.";
+      LOG(ERROR) << "Could not find DexFile.";
       return ERR(INTERNAL);
     }
     art::Handle<art::mirror::Object> dex_file_obj(hs.NewHandle(dex_file_ptr));
diff --git a/runtime/quick_exception_handler.cc b/runtime/quick_exception_handler.cc
index b3f29c2..9056d96 100644
--- a/runtime/quick_exception_handler.cc
+++ b/runtime/quick_exception_handler.cc
@@ -145,7 +145,7 @@
   if (kDebugExceptionDelivery) {
     mirror::String* msg = exception->GetDetailMessage();
     std::string str_msg(msg != nullptr ? msg->ToModifiedUtf8() : "");
-    self_->DumpStack(LOG(INFO) << "Delivering exception: " << PrettyTypeOf(exception)
+    self_->DumpStack(LOG_STREAM(INFO) << "Delivering exception: " << PrettyTypeOf(exception)
                      << ": " << str_msg << "\n");
   }
   StackHandleScope<1> hs(self_);
@@ -218,7 +218,7 @@
   DCHECK(handler_method_ != nullptr && handler_method_header_->IsOptimized());
 
   if (kDebugExceptionDelivery) {
-    self_->DumpStack(LOG(INFO) << "Setting catch phis: ");
+    self_->DumpStack(LOG_STREAM(INFO) << "Setting catch phis: ");
   }
 
   const size_t number_of_vregs = handler_method_->GetCodeItem()->registers_size_;
@@ -520,7 +520,7 @@
 void QuickExceptionHandler::DeoptimizeStack() {
   DCHECK(is_deoptimization_);
   if (kDebugExceptionDelivery) {
-    self_->DumpStack(LOG(INFO) << "Deoptimizing: ");
+    self_->DumpStack(LOG_STREAM(INFO) << "Deoptimizing: ");
   }
 
   DeoptimizeStackVisitor visitor(self_, context_, this, false);
diff --git a/runtime/runtime.cc b/runtime/runtime.cc
index 2be3b52..5bb38f5 100644
--- a/runtime/runtime.cc
+++ b/runtime/runtime.cc
@@ -255,7 +255,7 @@
     // This can't be called from the Heap destructor below because it
     // could call RosAlloc::InspectAll() which needs the thread_list
     // to be still alive.
-    heap_->DumpGcPerformanceInfo(LOG(INFO));
+    heap_->DumpGcPerformanceInfo(LOG_STREAM(INFO));
   }
 
   Thread* self = Thread::Current();
@@ -433,14 +433,14 @@
   // Many people have difficulty distinguish aborts from crashes,
   // so be explicit.
   AbortState state;
-  LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state);
+  LOG(FATAL_WITHOUT_ABORT) << Dumpable<AbortState>(state);
 
   // Call the abort hook if we have one.
   if (Runtime::Current() != nullptr && Runtime::Current()->abort_ != nullptr) {
-    LOG(INTERNAL_FATAL) << "Calling abort hook...";
+    LOG(FATAL_WITHOUT_ABORT) << "Calling abort hook...";
     Runtime::Current()->abort_();
     // notreached
-    LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!";
+    LOG(FATAL_WITHOUT_ABORT) << "Unexpectedly returned from abort hook!";
   }
 
 #if defined(__GLIBC__)
diff --git a/runtime/runtime_android.cc b/runtime/runtime_android.cc
index 33600dd..aed6a2b 100644
--- a/runtime/runtime_android.cc
+++ b/runtime/runtime_android.cc
@@ -34,7 +34,10 @@
 void HandleUnexpectedSignal(int signal_number, siginfo_t* info, void* raw_context) {
   static bool handling_unexpected_signal = false;
   if (handling_unexpected_signal) {
-    LogMessage::LogLine(__FILE__, __LINE__, INTERNAL_FATAL, "HandleUnexpectedSignal reentered\n");
+    LogHelper::LogLineLowStack(__FILE__,
+                               __LINE__,
+                               ::android::base::FATAL_WITHOUT_ABORT,
+                               "HandleUnexpectedSignal reentered\n");
     _exit(1);
   }
   handling_unexpected_signal = true;
@@ -44,11 +47,11 @@
   Runtime* runtime = Runtime::Current();
   if (runtime != nullptr) {
     // Print this out first in case DumpObject faults.
-    LOG(INTERNAL_FATAL) << "Fault message: " << runtime->GetFaultMessage();
+    LOG(FATAL_WITHOUT_ABORT) << "Fault message: " << runtime->GetFaultMessage();
     gc::Heap* heap = runtime->GetHeap();
     if (kDumpHeapObjectOnSigsevg && heap != nullptr && info != nullptr) {
-      LOG(INTERNAL_FATAL) << "Dump heap object at fault address: ";
-      heap->DumpObject(LOG(INTERNAL_FATAL), reinterpret_cast<mirror::Object*>(info->si_addr));
+      LOG(FATAL_WITHOUT_ABORT) << "Dump heap object at fault address: ";
+      heap->DumpObject(LOG_STREAM(FATAL_WITHOUT_ABORT), reinterpret_cast<mirror::Object*>(info->si_addr));
     }
   }
   // Run the old signal handler.
diff --git a/runtime/runtime_linux.cc b/runtime/runtime_linux.cc
index 60ebabc..cee73e1 100644
--- a/runtime/runtime_linux.cc
+++ b/runtime/runtime_linux.cc
@@ -309,7 +309,10 @@
 void HandleUnexpectedSignal(int signal_number, siginfo_t* info, void* raw_context) {
   static bool handlingUnexpectedSignal = false;
   if (handlingUnexpectedSignal) {
-    LogMessage::LogLine(__FILE__, __LINE__, INTERNAL_FATAL, "HandleUnexpectedSignal reentered\n");
+    LogHelper::LogLineLowStack(__FILE__,
+                               __LINE__,
+                               ::android::base::FATAL_WITHOUT_ABORT,
+                               "HandleUnexpectedSignal reentered\n");
     if (IsTimeoutSignal(signal_number)) {
       // Ignore a recursive timeout.
       return;
@@ -334,7 +337,7 @@
   UContext thread_context(raw_context);
   Backtrace thread_backtrace(raw_context);
 
-  LOG(INTERNAL_FATAL) << "*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n"
+  LOG(FATAL_WITHOUT_ABORT) << "*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n"
                       << StringPrintf("Fatal signal %d (%s), code %d (%s)",
                                       signal_number, GetSignalName(signal_number),
                                       info->si_code,
@@ -346,7 +349,7 @@
                       << "Registers:\n" << Dumpable<UContext>(thread_context) << "\n"
                       << "Backtrace:\n" << Dumpable<Backtrace>(thread_backtrace);
   if (kIsDebugBuild && signal_number == SIGSEGV) {
-    PrintFileToLog("/proc/self/maps", LogSeverity::INTERNAL_FATAL);
+    PrintFileToLog("/proc/self/maps", LogSeverity::FATAL_WITHOUT_ABORT);
   }
   Runtime* runtime = Runtime::Current();
   if (runtime != nullptr) {
@@ -354,17 +357,17 @@
       // Special timeout signal. Try to dump all threads.
       // Note: Do not use DumpForSigQuit, as that might disable native unwind, but the native parts
       //       are of value here.
-      runtime->GetThreadList()->Dump(LOG(INTERNAL_FATAL), kDumpNativeStackOnTimeout);
+      runtime->GetThreadList()->Dump(LOG_STREAM(FATAL_WITHOUT_ABORT), kDumpNativeStackOnTimeout);
     }
     gc::Heap* heap = runtime->GetHeap();
-    LOG(INTERNAL_FATAL) << "Fault message: " << runtime->GetFaultMessage();
+    LOG(FATAL_WITHOUT_ABORT) << "Fault message: " << runtime->GetFaultMessage();
     if (kDumpHeapObjectOnSigsevg && heap != nullptr && info != nullptr) {
-      LOG(INTERNAL_FATAL) << "Dump heap object at fault address: ";
-      heap->DumpObject(LOG(INTERNAL_FATAL), reinterpret_cast<mirror::Object*>(info->si_addr));
+      LOG(FATAL_WITHOUT_ABORT) << "Dump heap object at fault address: ";
+      heap->DumpObject(LOG_STREAM(FATAL_WITHOUT_ABORT), reinterpret_cast<mirror::Object*>(info->si_addr));
     }
   }
   if (getenv("debug_db_uid") != nullptr || getenv("art_wait_for_gdb_on_crash") != nullptr) {
-    LOG(INTERNAL_FATAL) << "********************************************************\n"
+    LOG(FATAL_WITHOUT_ABORT) << "********************************************************\n"
                         << "* Process " << getpid() << " thread " << tid << " \"" << thread_name
                         << "\""
                         << " has been suspended while crashing.\n"
diff --git a/runtime/signal_catcher.cc b/runtime/signal_catcher.cc
index 6cb7950..848c0e3 100644
--- a/runtime/signal_catcher.cc
+++ b/runtime/signal_catcher.cc
@@ -172,7 +172,7 @@
     LOG(INFO) << *self << ": reacting to signal " << signal_number;
 
     // If anyone's holding locks (which might prevent us from getting back into state Runnable), say so...
-    Runtime::Current()->DumpLockHolders(LOG(INFO));
+    Runtime::Current()->DumpLockHolders(LOG_STREAM(INFO));
   }
 
   return signal_number;
diff --git a/runtime/thread.cc b/runtime/thread.cc
index 8940354..45a9be7 100644
--- a/runtime/thread.cc
+++ b/runtime/thread.cc
@@ -609,7 +609,7 @@
     }
 
     VLOG(threads) << "Creating native thread for " << thread_name;
-    self->Dump(LOG(INFO));
+    self->Dump(LOG_STREAM(INFO));
   }
 
   Runtime* runtime = Runtime::Current();
@@ -804,7 +804,7 @@
       VLOG(threads) << "Attaching unnamed thread.";
     }
     ScopedObjectAccess soa(self);
-    self->Dump(LOG(INFO));
+    self->Dump(LOG_STREAM(INFO));
   }
 
   {
@@ -911,8 +911,10 @@
     + 4 * KB;
   if (read_stack_size <= min_stack) {
     // Note, as we know the stack is small, avoid operations that could use a lot of stack.
-    LogMessage::LogLineLowStack(__PRETTY_FUNCTION__, __LINE__, ERROR,
-                                "Attempt to attach a thread with a too-small stack");
+    LogHelper::LogLineLowStack(__PRETTY_FUNCTION__,
+                               __LINE__,
+                               ::android::base::ERROR,
+                               "Attempt to attach a thread with a too-small stack");
     return false;
   }
 
@@ -2382,7 +2384,7 @@
     ThrowNewException("Ljava/lang/OutOfMemoryError;", msg);
     tls32_.throwing_OutOfMemoryError = false;
   } else {
-    Dump(LOG(WARNING));  // The pre-allocated OOME has no stack, so help out and log one.
+    Dump(LOG_STREAM(WARNING));  // The pre-allocated OOME has no stack, so help out and log one.
     SetException(Runtime::Current()->GetPreAllocatedOutOfMemoryError());
   }
 }
@@ -2775,16 +2777,16 @@
           bool failed = false;
           if (!space->GetLiveBitmap()->Test(klass)) {
             failed = true;
-            LOG(INTERNAL_FATAL) << "Unmarked object in image " << *space;
+            LOG(FATAL_WITHOUT_ABORT) << "Unmarked object in image " << *space;
           } else if (!heap->GetLiveBitmap()->Test(klass)) {
             failed = true;
-            LOG(INTERNAL_FATAL) << "Unmarked object in image through live bitmap " << *space;
+            LOG(FATAL_WITHOUT_ABORT) << "Unmarked object in image through live bitmap " << *space;
           }
           if (failed) {
-            GetThread()->Dump(LOG(INTERNAL_FATAL));
-            space->AsImageSpace()->DumpSections(LOG(INTERNAL_FATAL));
-            LOG(INTERNAL_FATAL) << "Method@" << method->GetDexMethodIndex() << ":" << method
-                                << " klass@" << klass;
+            GetThread()->Dump(LOG_STREAM(FATAL_WITHOUT_ABORT));
+            space->AsImageSpace()->DumpSections(LOG_STREAM(FATAL_WITHOUT_ABORT));
+            LOG(FATAL_WITHOUT_ABORT) << "Method@" << method->GetDexMethodIndex() << ":" << method
+                                     << " klass@" << klass;
             // Pretty info last in case it crashes.
             LOG(FATAL) << "Method " << PrettyMethod(method) << " klass " << PrettyClass(klass);
           }
@@ -2838,7 +2840,7 @@
           if (kIsDebugBuild && ref_addr == nullptr) {
             std::string thread_name;
             GetThread()->GetThreadName(thread_name);
-            LOG(INTERNAL_FATAL) << "On thread " << thread_name;
+            LOG(FATAL_WITHOUT_ABORT) << "On thread " << thread_name;
             DescribeStack(GetThread());
             LOG(FATAL) << "Found an unsaved callee-save register " << i << " (null GPRAddress) "
                        << "set in register_mask=" << register_mask << " at " << DescribeLocation();
@@ -2953,7 +2955,7 @@
     // However, we seem to have already extended to use the full stack.
     LOG(ERROR) << "Need to increase kStackOverflowReservedBytes (currently "
                << GetStackOverflowReservedBytes(kRuntimeISA) << ")?";
-    DumpStack(LOG(ERROR));
+    DumpStack(LOG_STREAM(ERROR));
     LOG(FATAL) << "Recursive stack overflow.";
   }
 
diff --git a/runtime/thread_list.cc b/runtime/thread_list.cc
index 5e6c8a4..03b03de 100644
--- a/runtime/thread_list.cc
+++ b/runtime/thread_list.cc
@@ -214,7 +214,7 @@
     bool timed_out = barrier_.Increment(self, threads_running_checkpoint, kDumpWaitTimeout);
     if (timed_out) {
       // Avoid a recursive abort.
-      LOG((kIsDebugBuild && (gAborting == 0)) ? FATAL : ERROR)
+      LOG((kIsDebugBuild && (gAborting == 0)) ? ::android::base::FATAL : ::android::base::ERROR)
           << "Unexpected time out during dump checkpoint.";
     }
   }
@@ -628,7 +628,8 @@
         // EAGAIN and EINTR both indicate a spurious failure, try again from the beginning.
         if ((errno != EAGAIN) && (errno != EINTR)) {
           if (errno == ETIMEDOUT) {
-            LOG(kIsDebugBuild ? FATAL : ERROR) << "Unexpected time out during suspend all.";
+            LOG(kIsDebugBuild ? ::android::base::FATAL : ::android::base::ERROR)
+                << "Unexpected time out during suspend all.";
           } else {
             PLOG(FATAL) << "futex wait failed for SuspendAllInternal()";
           }
@@ -775,7 +776,10 @@
           // ThreadList::WaitForOtherNonDaemonThreadsToExit.
           suspended_thread->ModifySuspendCount(soa.Self(), -1, nullptr, debug_suspension);
         }
-        ThreadSuspendByPeerWarning(self, WARNING, "No such thread for suspend", peer);
+        ThreadSuspendByPeerWarning(self,
+                                   ::android::base::WARNING,
+                                    "No such thread for suspend",
+                                    peer);
         return nullptr;
       }
       if (!Contains(thread)) {
@@ -822,7 +826,10 @@
         }
         const uint64_t total_delay = NanoTime() - start_time;
         if (total_delay >= MsToNs(kThreadSuspendTimeoutMs)) {
-          ThreadSuspendByPeerWarning(self, FATAL, "Thread suspension timed out", peer);
+          ThreadSuspendByPeerWarning(self,
+                                     ::android::base::FATAL,
+                                     "Thread suspension timed out",
+                                     peer);
           if (suspended_thread != nullptr) {
             CHECK_EQ(suspended_thread, thread);
             suspended_thread->ModifySuspendCount(soa.Self(), -1, nullptr, debug_suspension);
@@ -882,7 +889,9 @@
         CHECK(suspended_thread == nullptr) << "Suspended thread " << suspended_thread
             << " no longer in thread list";
         // There's a race in inflating a lock and the owner giving up ownership and then dying.
-        ThreadSuspendByThreadIdWarning(WARNING, "No such thread id for suspend", thread_id);
+        ThreadSuspendByThreadIdWarning(::android::base::WARNING,
+                                       "No such thread id for suspend",
+                                       thread_id);
         return nullptr;
       }
       VLOG(threads) << "SuspendThreadByThreadId found thread: " << *thread;
@@ -923,7 +932,9 @@
         }
         const uint64_t total_delay = NanoTime() - start_time;
         if (total_delay >= MsToNs(kThreadSuspendTimeoutMs)) {
-          ThreadSuspendByThreadIdWarning(WARNING, "Thread suspension timed out", thread_id);
+          ThreadSuspendByThreadIdWarning(::android::base::WARNING,
+                                         "Thread suspension timed out",
+                                         thread_id);
           if (suspended_thread != nullptr) {
             thread->ModifySuspendCount(soa.Self(), -1, nullptr, debug_suspension);
           }
diff --git a/runtime/verifier/method_verifier.cc b/runtime/verifier/method_verifier.cc
index abd741c..13ef043 100644
--- a/runtime/verifier/method_verifier.cc
+++ b/runtime/verifier/method_verifier.cc
@@ -434,14 +434,15 @@
             severity = LogSeverity::WARNING;
             break;
           case HardFailLogMode::kLogInternalFatal:
-            severity = LogSeverity::INTERNAL_FATAL;
+            severity = LogSeverity::FATAL_WITHOUT_ABORT;
             break;
           default:
             LOG(FATAL) << "Unsupported log-level " << static_cast<uint32_t>(log_level);
             UNREACHABLE();
         }
-        verifier.DumpFailures(LOG(severity) << "Verification error in "
-                                            << PrettyMethod(method_idx, *dex_file) << "\n");
+        verifier.DumpFailures(LOG_STREAM(severity) << "Verification error in "
+                                                   << PrettyMethod(method_idx, *dex_file)
+                                                   << "\n");
       }
       if (hard_failure_msg != nullptr) {
         CHECK(!verifier.failure_messages_.empty());
diff --git a/runtime/verifier/verifier_log_mode.h b/runtime/verifier/verifier_log_mode.h
index 3744b9b..e83d174 100644
--- a/runtime/verifier/verifier_log_mode.h
+++ b/runtime/verifier/verifier_log_mode.h
@@ -24,7 +24,7 @@
   kLogNone,                               // Don't log hard failures at all.
   kLogVerbose,                            // Log with severity VERBOSE.
   kLogWarning,                            // Log with severity WARNING.
-  kLogInternalFatal,                      // Log with severity INTERNAL_FATAL
+  kLogInternalFatal,                      // Log with severity FATAL_WITHOUT_ABORT
 };
 
 }  // namespace verifier
diff --git a/runtime/well_known_classes.cc b/runtime/well_known_classes.cc
index 16c7f77..eb5f68d 100644
--- a/runtime/well_known_classes.cc
+++ b/runtime/well_known_classes.cc
@@ -182,7 +182,7 @@
   if (fid == nullptr) {
     ScopedObjectAccess soa(env);
     if (soa.Self()->IsExceptionPending()) {
-      LOG(INTERNAL_FATAL) << soa.Self()->GetException()->Dump();
+      LOG(FATAL_WITHOUT_ABORT) << soa.Self()->GetException()->Dump();
     }
     std::ostringstream os;
     WellKnownClasses::ToClass(c)->DumpClass(os, mirror::Class::kDumpClassFullDetail);
@@ -199,7 +199,7 @@
   if (mid == nullptr) {
     ScopedObjectAccess soa(env);
     if (soa.Self()->IsExceptionPending()) {
-      LOG(INTERNAL_FATAL) << soa.Self()->GetException()->Dump();
+      LOG(FATAL_WITHOUT_ABORT) << soa.Self()->GetException()->Dump();
     }
     std::ostringstream os;
     WellKnownClasses::ToClass(c)->DumpClass(os, mirror::Class::kDumpClassFullDetail);
diff --git a/test/099-vmdebug/check b/test/099-vmdebug/check
index 57111bc..d124ce8 100755
--- a/test/099-vmdebug/check
+++ b/test/099-vmdebug/check
@@ -15,6 +15,6 @@
 # limitations under the License.
 
 # Strip the process pids and line numbers from exact error messages.
-sed -e '/^art E.*\] /d' "$2" > "$2.tmp"
+sed -e '/^dalvikvm\(\|32\|64\) E.*\] /d' "$2" > "$2.tmp"
 
 diff --strip-trailing-cr -q "$1" "$2.tmp" >/dev/null
diff --git a/test/119-noimage-patchoat/check b/test/119-noimage-patchoat/check
index 57111bc..d124ce8 100755
--- a/test/119-noimage-patchoat/check
+++ b/test/119-noimage-patchoat/check
@@ -15,6 +15,6 @@
 # limitations under the License.
 
 # Strip the process pids and line numbers from exact error messages.
-sed -e '/^art E.*\] /d' "$2" > "$2.tmp"
+sed -e '/^dalvikvm\(\|32\|64\) E.*\] /d' "$2" > "$2.tmp"
 
 diff --strip-trailing-cr -q "$1" "$2.tmp" >/dev/null
diff --git a/test/137-cfi/cfi.cc b/test/137-cfi/cfi.cc
index 9f1499e..113b35f 100644
--- a/test/137-cfi/cfi.cc
+++ b/test/137-cfi/cfi.cc
@@ -91,7 +91,7 @@
 static void MoreErrorInfo(pid_t pid, bool sig_quit_on_fail) {
   printf("Secondary pid is %d\n", pid);
 
-  PrintFileToLog(StringPrintf("/proc/%d/maps", pid), ERROR);
+  PrintFileToLog(StringPrintf("/proc/%d/maps", pid), ::android::base::ERROR);
 
   if (sig_quit_on_fail) {
     int res = kill(pid, SIGQUIT);
diff --git a/test/143-string-value/check b/test/143-string-value/check
index 92f6e90..2a3476c 100755
--- a/test/143-string-value/check
+++ b/test/143-string-value/check
@@ -15,6 +15,6 @@
 # limitations under the License.
 
 # Strip error log messages.
-sed -e '/^art E.*\] /d' "$2" > "$2.tmp"
+sed -e '/^dalvikvm\(\|32\|64\) E.*\] /d' "$2" > "$2.tmp"
 
 diff --strip-trailing-cr -q "$1" "$2.tmp" >/dev/null
diff --git a/test/149-suspend-all-stress/suspend_all.cc b/test/149-suspend-all-stress/suspend_all.cc
index dfd944a..c1c0ff9 100644
--- a/test/149-suspend-all-stress/suspend_all.cc
+++ b/test/149-suspend-all-stress/suspend_all.cc
@@ -42,14 +42,16 @@
         break;
       }
       case kOPDumpStack: {
-        Runtime::Current()->GetThreadList()->Dump(LOG(INFO));
+        Runtime::Current()->GetThreadList()->Dump(LOG_STREAM(INFO));
         usleep(500);
         break;
       }
       case kOPSuspendAllDumpStack: {
         // Not yet supported.
-        // ScopedSuspendAll ssa(__FUNCTION__);
-        // Runtime::Current()->GetThreadList()->Dump(LOG(INFO));
+        if ((false)) {
+          ScopedSuspendAll ssa(__FUNCTION__);
+          Runtime::Current()->GetThreadList()->Dump(LOG_STREAM(INFO));
+        }
         break;
       }
       case kOPNumber:
diff --git a/test/458-checker-instruct-simplification/src/Main.java b/test/458-checker-instruct-simplification/src/Main.java
index e71a0e1..40baa15 100644
--- a/test/458-checker-instruct-simplification/src/Main.java
+++ b/test/458-checker-instruct-simplification/src/Main.java
@@ -1202,6 +1202,10 @@
   /// CHECK-DAG:     <<NotArg:z\d+>>    BooleanNot [<<Arg>>]
   /// CHECK-DAG:                        Return [<<Arg>>]
 
+  /// CHECK-START: boolean Main.$noinline$NotNotBool(boolean) dead_code_elimination$final (after)
+  /// CHECK-DAG:     <<Arg:z\d+>>       ParameterValue
+  /// CHECK-DAG:                        Return [<<Arg>>]
+
   public static boolean NegateValue(boolean arg) {
     return !arg;
   }
diff --git a/test/800-smali/expected.txt b/test/800-smali/expected.txt
index 3bb3725..b8324e5 100644
--- a/test/800-smali/expected.txt
+++ b/test/800-smali/expected.txt
@@ -70,4 +70,5 @@
 b/29778499 (1)
 b/29778499 (2)
 b/30458218
+b/31313170
 Done!
diff --git a/test/800-smali/smali/b_31313170.smali b/test/800-smali/smali/b_31313170.smali
new file mode 100644
index 0000000..327942a
--- /dev/null
+++ b/test/800-smali/smali/b_31313170.smali
@@ -0,0 +1,22 @@
+.class public LB31313170;
+.super Ljava/lang/Object;
+
+
+.method public constructor <init>()V
+.registers 1
+       invoke-direct {p0}, Ljava/lang/Object;-><init>()V
+       return-void
+.end method
+
+.method public static run()I
+.registers 4
+       const/4 v0, 0
+       const/4 v1, 1
+       sget v2, LB31313170;->a:I
+       if-nez v2, :exit
+       move-object v1, v0
+       :exit
+       return v1
+.end method
+
+.field static public a:I
diff --git a/test/800-smali/src/Main.java b/test/800-smali/src/Main.java
index 34f2580..8d39f09 100644
--- a/test/800-smali/src/Main.java
+++ b/test/800-smali/src/Main.java
@@ -181,6 +181,7 @@
         testCases.add(new TestCase("b/29778499 (2)", "B29778499_2", "run", null,
                 new IncompatibleClassChangeError(), null));
         testCases.add(new TestCase("b/30458218", "B30458218", "run", null, null, null));
+        testCases.add(new TestCase("b/31313170", "B31313170", "run", null, null, 0));
     }
 
     public void runTests() {
@@ -228,7 +229,7 @@
                                                             tc.testName);
                 } else if (tc.expectedReturn == null && retValue != null) {
                     errorReturn = new IllegalStateException("Expected a null result in test " +
-                                                            tc.testName);
+                                                            tc.testName + " got " + retValue);
                 } else if (tc.expectedReturn != null &&
                            (retValue == null || !tc.expectedReturn.equals(retValue))) {
                     errorReturn = new IllegalStateException("Expected return " +
diff --git a/test/Android.bp b/test/Android.bp
index 2d61000..72dcbba 100644
--- a/test/Android.bp
+++ b/test/Android.bp
@@ -63,6 +63,7 @@
         "libvixld-arm64",
         "libart-gtest",
 
+        "libbase",
         "libicuuc",
         "libicui18n",
         "libnativehelper",
@@ -204,6 +205,7 @@
     ],
     shared_libs: [
         "libbacktrace",
+        "libbase",
         "libnativehelper",
     ],
     target: {
@@ -246,6 +248,7 @@
     ],
     shared_libs: [
         "libart",
+        "libbase",
         "libopenjdkjvmti",
     ],
 }
@@ -306,6 +309,7 @@
     ],
     shared_libs: [
         "libbacktrace",
+        "libbase",
         "libnativehelper",
     ],
     target: {
diff --git a/tools/jfuzz/README.md b/tools/jfuzz/README.md
index 3eb41cf..c107db1 100644
--- a/tools/jfuzz/README.md
+++ b/tools/jfuzz/README.md
@@ -62,6 +62,18 @@
     --report_script : path to script called for each divergence
     --jfuzz_arg     : argument for jfuzz
 
+How to start JFuzz nightly testing
+==================================
+
+    run_jfuzz_test_nightly.py
+                          [--num_proc NUM_PROC]
+
+where
+
+    --num_proc      : number of run_jfuzz_test.py instances to run (8 by default)
+
+Remaining arguments are passed to run\_jfuzz_test.py.
+
 How to start J/DexFuzz testing (multi-layered)
 ==============================================
 
diff --git a/tools/jfuzz/run_jfuzz_test_nightly.py b/tools/jfuzz/run_jfuzz_test_nightly.py
new file mode 100755
index 0000000..cd338fb
--- /dev/null
+++ b/tools/jfuzz/run_jfuzz_test_nightly.py
@@ -0,0 +1,65 @@
+#!/usr/bin/env python3.4
+#
+# Copyright (C) 2016 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import argparse
+import os
+import subprocess
+import sys
+
+from tempfile import TemporaryFile
+
+# Default arguments for run_jfuzz_test.py.
+DEFAULT_ARGS = ['--num_tests=20000']
+
+# run_jfuzz_test.py success string.
+SUCCESS_STRING = 'success (no divergences)'
+
+# Constant returned by string find() method when search fails.
+NOT_FOUND = -1
+
+def main(argv):
+  cwd = os.path.dirname(os.path.realpath(__file__))
+  cmd = [cwd + '/run_jfuzz_test.py'] + DEFAULT_ARGS
+  parser = argparse.ArgumentParser()
+  parser.add_argument('--num_proc', default=8,
+                      type=int, help='number of processes to run')
+  # Unknown arguments are passed to run_jfuzz_test.py.
+  (args, unknown_args) = parser.parse_known_args()
+  output_files = [TemporaryFile('wb+') for _ in range(args.num_proc)]
+  processes = []
+  for output_file in output_files:
+    processes.append(subprocess.Popen(cmd + unknown_args, stdout=output_file,
+                                      stderr=subprocess.STDOUT))
+  try:
+    # Wait for processes to terminate.
+    for proc in processes:
+      proc.wait()
+  except KeyboardInterrupt:
+    for proc in processes:
+      proc.kill()
+  # Output results.
+  for i, output_file in enumerate(output_files):
+    output_file.seek(0)
+    output_str = output_file.read().decode('ascii')
+    output_file.close()
+    print('Tester', i)
+    if output_str.find(SUCCESS_STRING) == NOT_FOUND:
+      print(output_str)
+    else:
+      print(SUCCESS_STRING)
+
+if __name__ == '__main__':
+  main(sys.argv)