--- libmalloc/libmalloc-374.100.5/tests/Makefile
+++ libmalloc/libmalloc-116.50.8/tests/Makefile
@@ -5,80 +5,66 @@
 
 include $(DEVELOPER_DIR)/AppleInternal/Makefiles/darwintest/Makefile.common
 
-TRACE_FILES := \
-	$(notdir $(wildcard $(SRCROOT)/../traces/*.mtrace))
+OTHER_CFLAGS += -DDARWINTEST
+MALLOCBENCH_SOURCE := $(wildcard MallocBench/*.cpp)
+CXX := $(shell $(XCRUN) -sdk "$(TARGETSDK)" -find clang++)
 
-# add trace files without the traces/ prefix, fex:
-#   exclude_this_file.mtrace
-EXCLUDED_TRACE_FILES :=
+$(OBJROOT)/MallocBench/%.o: MallocBench/%.cpp
+	@mkdir -p $(OBJROOT)/MallocBench
+	$(CXX) $(CFLAGS) -I$(SRCROOT)/MallocBench -std=gnu++11 -stdlib=libc++ -c -o $@ $<
 
-CUSTOM_TARGETS = \
-	MALLOC_BENCH
+single-%: $(addprefix $(OBJROOT)/, $(MALLOCBENCH_SOURCE:.cpp=.o))
+	$(CXX) -c -o $(OBJROOT)/MallocBench-$@.o \
+		-I$(SRCROOT)/MallocBench \
+		$(CFLAGS) \
+		-DBENCHMARK_NAME=\"$*\" \
+		-DPARALLEL=false \
+		$(SRCROOT)/MallocBench.cpp
+	$(CXX) -o $(SYMROOT)/$@ \
+		$(CFLAGS) \
+		$^ \
+		$(OBJROOT)/MallocBench-$@.o
+
+parallel-%: $(addprefix $(OBJROOT)/, $(MALLOCBENCH_SOURCE:.cpp=.o))
+	$(CXX) -c -o $(OBJROOT)/MallocBench-$@.o \
+		-I$(SRCROOT)/MallocBench \
+		$(CFLAGS) \
+		-DBENCHMARK_NAME=\"$*\" \
+		-DPARALLEL=true \
+		$(SRCROOT)/MallocBench.cpp
+	$(CXX) -o $(SYMROOT)/$@ \
+		$(CFLAGS) \
+		$^ \
+		$(OBJROOT)/MallocBench-$@.o
 
 OTHER_TEST_TARGETS = \
-	$(addprefix nano-trace-replay_, $(basename $(filter-out $(EXCLUDED_TRACE_FILES), $(TRACE_FILES)))) 
+	single-churn \
+	single-list_allocate \
+	single-tree_allocate \
+	single-tree_churn \
+	single-fragment \
+	single-fragment_iterate \
+	single-message_one \
+	single-message_many \
+	parallel-churn \
+	parallel-list_allocate \
+	parallel-tree_allocate \
+	parallel-tree_churn \
+	parallel-fragment \
+	parallel-fragment_iterate
 
-MALLOCBENCHTEST_DIR = $(SRCROOT)/MallocBenchTest
-BATS_PLISTS_EXTRACT = \
-	$(patsubst %,$(SYMROOT)/%.plist,$(OTHER_TEST_TARGETS))
+#	single-medium \
+#	single-big \
+#	parallel-medium \
+#	parallel-big
 
-EXCLUDED_SOURCES := \
-	nano_trace_replay.c
-CXX := $(shell $(XCRUN) -sdk "$(TARGETSDK)" -find clang++)
-
-WARNING_CFLAGS := -Wno-format-invalid-specifier -Wno-format-extra-args
-OTHER_CFLAGS += \
-	-DDARWINTEST \
-	-DOS_UNFAIR_LOCK_INLINE=1 \
-	-fno-builtin \
-	-lCrashReporterClient \
-	-I$(SDKROOT)/System/Library/Frameworks/System.framework/PrivateHeaders \
-	-I$(SRCROOT)/../private \
-	-I$(SRCROOT)/../include \
-	$(WARNING_CFLAGS)
-
-PRIVATE_FRAMEWORKS = $(SDKROOT)/System/Library/PrivateFrameworks
-PERFDATA_FRAMEWORK = perfdata
-
-nano-trace-replay_%: $(SRCROOT)/nano_trace_replay.c
-	$(CC) \
-		$(CFLAGS) $(DT_CFLAGS) $(OTHER_CFLAGS) \
-		$(LDFLAGS) $(DT_LDFLAGS) $(OTHER_LDFLAGS) \
-		-DTRACE_NAME="$(patsubst nano-trace-replay_%,%,$(notdir $@))" \
-		$(patsubst _Photos_puja,-DTEST_TIMEOUT=3000,$(findstring _Photos_puja,$(notdir $@))) \
-		-o $@ \
-		$(SRCROOT)/nano_trace_replay.c
-
-# For now, we only build and run MallocBench on iOS. macOS requires
-# us to adopt installAPI.
-LOWER_SDKROOT  = $(shell echo $(SDKROOT) | tr '[:upper:]' '[:lower:]')
-ifneq (, $(findstring iphoneos,$(LOWER_SDKROOT)))
-include MallocBenchTest/Makefile.malloc-bench
-BATS_PLISTS = $(BATS_PLISTS_EXTRACT) $(MALLOCBENCHTEST_DIR)/MallocBench.plist
+ifeq ($(Embedded),YES)
+EXCLUDED_SOURCES += asan
 else
-include MallocBenchTest/Makefile.dummy
-BATS_PLISTS = $(BATS_PLISTS_EXTRACT)
+CLANG_LIB_DIR := $(dir $(shell xcrun -f clang --sdk $(SDKROOT)))../lib
+ASAN_DYLIB_PATH := $(dir $(subst /BuildRoot,,$(shell find $(CLANG_LIB_DIR) -name libclang_rt.asan_osx_dynamic.dylib -perm -0111 | head -n 1)))
+asan: OTHER_CFLAGS += -fsanitize=address
+asan: OTHER_LDFLAGS += -Wl,-rpath -Wl,$(ASAN_DYLIB_PATH)
 endif
 
-BATS_PLISTS += $(PROJECT_DIR)/tests/xctests/BATS.plist
-
-$(BATS_PLISTS_EXTRACT): %.plist : %
-	$(EXTRACTMETA) extract -i /$(INSTALLPATH)/$(notdir $<) -b $(SYMROOT)/$(notdir $<) -o $@
-	@plutil -convert binary1 $@
-
-SANITIZER_DYLIB_PATH := /usr/appleinternal/lib/sanitizers/
-asan: OTHER_CFLAGS += -fsanitize=address
-asan: OTHER_LDFLAGS += -Wl,-rpath -Wl,$(SANITIZER_DYLIB_PATH)
-
-ifeq ($(Embedded),NO)
-tsan: CFLAGS := $(filter-out $(ARCH_FLAGS),$(CFLAGS)) -arch x86_64 -fsanitize=thread
-tsan: OTHER_LDFLAGS += -Wl,-rpath -Wl,$(SANITIZER_DYLIB_PATH)
-else
-EXCLUDED_SOURCES += tsan.c magazine_medium_test.c
-endif
-
-madvise: OTHER_CFLAGS += -I../src
-
-.DEFAULT_GOAL := all
-
 include $(DEVELOPER_DIR)/AppleInternal/Makefiles/darwintest/Makefile.targets