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tests/basic_malloc_free_perf.c libmalloc-283.40.1 libmalloc-792.1.1
--- libmalloc/libmalloc-283.40.1/tests/basic_malloc_free_perf.c
+++ libmalloc/libmalloc-792.1.1/tests/basic_malloc_free_perf.c
@@ -3,7 +3,7 @@
 //  libmalloc
 //
 //  Simple and repeatable performance tests for malloc/free, running tests
-// 	on the regular, Nanov1 and Nanov2 allocators.
+// 	on the regular and Nanov2 allocators.
 //
 #include <darwintest.h>
 #include <dispatch/dispatch.h>
@@ -12,6 +12,8 @@
 
 // This value is a guess that will be refined over time.
 #define PERFCHECK_THRESHOLD_PCT	10.0
+
+T_GLOBAL_META(T_META_TAG_VM_NOT_PREFERRED);
 
 static uint32_t
 ncpu(void)
@@ -69,7 +71,7 @@
 }
 
 // Test content. Each of the functions is called from six different test cases,
-// with singlethreaded true and false and MallocNanoZone set to 0, V1 and V2.
+// with singlethreaded true and false and MallocNanoZone set to 0 and V2.
 // The test content is biased towards the implementation of Nanov2.
 
 static void
@@ -174,10 +176,8 @@
 
 // The tests that follow are grouped as follows:
 // 	- single-thread non-Nano version
-//  - single-threaded NanoV1 version
 //	- single-threaded NanoV2 version
 // 	- parallel non-Nano version
-//  - parallel NanoV1 version
 //	- parallel NanoV2 version
 // Each group probably could be built with a macro, but that would be harder
 // to debug when there is a problem.
@@ -186,17 +186,17 @@
 #pragma mark 8-byte allocation/free
 
 T_DECL(basic_perf_serial_8_bytes, "Malloc/Free 8 bytes single-threaded",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
+	   T_META_TAG_PERF, T_META_TAG_XZONE, T_META_ALL_VALID_ARCHS(NO),
 	   T_META_LTEPHASE(LTE_POSTINIT), T_META_CHECK_LEAKS(false),
 	   T_META_ENVVAR("MallocNanoZone=0"))
 {
 	basic_perf_malloc_free_8_bytes(true);
 }
 
-T_DECL(basic_perf_serial_8_bytes_V1, "Malloc/Free 8 bytes single-threaded on V1",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
-	   T_META_LTEPHASE(LTE_POSTINIT), T_META_CHECK_LEAKS(false),
-	   T_META_ENVVAR("MallocNanoZone=V1"))
+T_DECL(basic_perf_serial_8_bytes_V2, "Malloc/Free 8 bytes single-threaded on V2",
+	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
+	   T_META_LTEPHASE(LTE_POSTINIT), T_META_CHECK_LEAKS(false),
+	   T_META_ENVVAR("MallocNanoZone=V2"))
 {
 #if CONFIG_NANOZONE
 	basic_perf_malloc_free_8_bytes(true);
@@ -205,36 +205,12 @@
 #endif // CONFIG_NANOZONE
 }
 
-T_DECL(basic_perf_serial_8_bytes_V2, "Malloc/Free 8 bytes single-threaded on V2",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
-	   T_META_LTEPHASE(LTE_POSTINIT), T_META_CHECK_LEAKS(false),
-	   T_META_ENVVAR("MallocNanoZone=V2"))
-{
-#if CONFIG_NANOZONE
-	basic_perf_malloc_free_8_bytes(true);
-#else // CONFIG_NANOZONE
-	T_SKIP("Nano allocator not configured");
-#endif // CONFIG_NANOZONE
-}
-
 T_DECL(basic_perf_parallel_8_bytes, "Malloc/Free 8 bytes parallel",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
+	   T_META_TAG_PERF, T_META_TAG_XZONE, T_META_ALL_VALID_ARCHS(NO),
 	   T_META_LTEPHASE(LTE_POSTINIT), T_META_CHECK_LEAKS(false),
 	   T_META_ENVVAR("MallocNanoZone=0"))
 {
 	basic_perf_malloc_free_8_bytes(false);
-}
-
-T_DECL(basic_perf_parallel_8_bytes_V1, "Malloc/Free 8 bytes parallel on V1",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
-	   T_META_LTEPHASE(LTE_POSTINIT), T_META_CHECK_LEAKS(false),
-	   T_META_ENVVAR("MallocNanoZone=V1"))
-{
-#if CONFIG_NANOZONE
-	basic_perf_malloc_free_8_bytes(false);
-#else // CONFIG_NANOZONE
-	T_SKIP("Nano allocator not configured");
-#endif // CONFIG_NANOZONE
 }
 
 T_DECL(basic_perf_parallel_8_bytes_V2, "Malloc/Free 8 bytes single-threaded on V2",
@@ -254,24 +230,11 @@
 
 T_DECL(basic_perf_serial_8_bytes_multi_block_default_scan_policy,
 	   "Malloc/Free 8 bytes single-threaded with block overflow, default scan policy",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
+	   T_META_TAG_PERF, T_META_TAG_XZONE, T_META_ALL_VALID_ARCHS(NO),
 	   T_META_LTEPHASE(LTE_POSTINIT), T_META_CHECK_LEAKS(false),
 	   T_META_ENVVAR("MallocNanoZone=0"))
 {
 	basic_perf_malloc_free_8_bytes_multi_block(true);
-}
-
-T_DECL(basic_perf_serial_8_bytes_multi_block_default_scan_policy_V1,
-	   	"Malloc/Free 8 bytes single-threaded with block overflow, default scan policy on V1",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
-	   T_META_LTEPHASE(LTE_POSTINIT), T_META_CHECK_LEAKS(false),
-	   T_META_ENVVAR("MallocNanoZone=V1"))
-{
-#if CONFIG_NANOZONE
-	basic_perf_malloc_free_8_bytes_multi_block(true);
-#else // CONFIG_NANOZONE
-	T_SKIP("Nano allocator not configured");
-#endif // CONFIG_NANOZONE
 }
 
 T_DECL(basic_perf_serial_8_bytes_multi_block_default_scan_policy_V2,
@@ -289,24 +252,11 @@
 
 T_DECL(basic_perf_parallel_8_bytes_multi_block_default_scan_policy,
 	   "Malloc/Free 8 bytes parallel with block overflow, default scan policy",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
+	   T_META_TAG_PERF, T_META_TAG_XZONE, T_META_ALL_VALID_ARCHS(NO),
 	   T_META_LTEPHASE(LTE_POSTINIT), T_META_CHECK_LEAKS(false),
 	   T_META_ENVVAR("MallocNanoZone=0"))
 {
 	basic_perf_malloc_free_8_bytes_multi_block(false);
-}
-
-T_DECL(basic_perf_parallel_8_bytes_multi_block_default_scan_policy_V1,
-	   	"Malloc/Free 8 bytes parallel with block overflow, default scan policy on V1",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
-	   T_META_LTEPHASE(LTE_POSTINIT), T_META_CHECK_LEAKS(false),
-	   T_META_ENVVAR("MallocNanoZone=V1"))
-{
-#if CONFIG_NANOZONE
-	basic_perf_malloc_free_8_bytes_multi_block(false);
-#else // CONFIG_NANOZONE
-	T_SKIP("Nano allocator not configured");
-#endif // CONFIG_NANOZONE
 }
 
 T_DECL(basic_perf_parallel_8_bytes_multi_block_default_scan_policy_V2,
@@ -359,24 +309,11 @@
 
 T_DECL(basic_perf_serial_different_size_classes,
 	   "Malloc/Free in different size classes single-threaded",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
+	   T_META_TAG_PERF, T_META_TAG_XZONE, T_META_ALL_VALID_ARCHS(NO),
 	   T_META_LTEPHASE(LTE_POSTINIT),
 	   T_META_ENVVAR("MallocNanoZone=0"))
 {
 	basic_perf_malloc_free_different_size_classes(false);
-}
-
-T_DECL(basic_perf_serial_different_size_classes_V1,
-	   "Malloc/Free in different size classes single-threaded on V1",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
-	   T_META_LTEPHASE(LTE_POSTINIT),
-	   T_META_ENVVAR("MallocNanoZone=V1"))
-{
-#if CONFIG_NANOZONE
-	basic_perf_malloc_free_different_size_classes(false);
-#else // CONFIG_NANOZONE
-	T_SKIP("Nano allocator not configured");
-#endif // CONFIG_NANOZONE
 }
 
 T_DECL(basic_perf_serial_different_size_classes_V2,
@@ -394,24 +331,11 @@
 
 T_DECL(basic_perf_parallel_different_size_classes,
 	   "Malloc/Free in different size classes parallel",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
+	   T_META_TAG_PERF, T_META_TAG_XZONE, T_META_ALL_VALID_ARCHS(NO),
 	   T_META_LTEPHASE(LTE_POSTINIT),
 	   T_META_ENVVAR("MallocNanoZone=0"))
 {
 	basic_perf_malloc_free_different_size_classes(false);
-}
-
-T_DECL(basic_perf_parallel_different_size_classes_V1,
-	   "Malloc/Free in different size classes parallel on V1",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
-	   T_META_LTEPHASE(LTE_POSTINIT),
-	   T_META_ENVVAR("MallocNanoZone=V1"))
-{
-#if CONFIG_NANOZONE
-	basic_perf_malloc_free_different_size_classes(false);
-#else // CONFIG_NANOZONE
-	T_SKIP("Nano allocator not configured");
-#endif // CONFIG_NANOZONE
 }
 
 T_DECL(basic_perf_parallel_different_size_classes_V2,
@@ -432,24 +356,11 @@
 
 T_DECL(basic_perf_serial_by_size_class,
 	   "Malloc/Free by size class single-threaded",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
+	   T_META_TAG_PERF, T_META_TAG_XZONE, T_META_ALL_VALID_ARCHS(NO),
 	   T_META_LTEPHASE(LTE_POSTINIT),
 	   T_META_ENVVAR("MallocNanoZone=0"))
 {
 	basic_perf_malloc_free_by_size_class(true);
-}
-
-T_DECL(basic_perf_serial_by_size_class_V1,
-	   "Malloc/Free by size class single-threaded on V1",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
-	   T_META_LTEPHASE(LTE_POSTINIT),
-	   T_META_ENVVAR("MallocNanoZone=V1"))
-{
-#if CONFIG_NANOZONE
-	basic_perf_malloc_free_by_size_class(true);
-#else // CONFIG_NANOZONE
-	T_SKIP("Nano allocator not configured");
-#endif // CONFIG_NANOZONE
 }
 
 T_DECL(basic_perf_serial_by_size_class_V2,
@@ -467,24 +378,11 @@
 
 T_DECL(basic_perf_parallel_by_size_class,
 	   "Malloc/Free by size class parallel",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
+	   T_META_TAG_PERF, T_META_TAG_XZONE, T_META_ALL_VALID_ARCHS(NO),
 	   T_META_LTEPHASE(LTE_POSTINIT),
 	   T_META_ENVVAR("MallocNanoZone=0"))
 {
 	basic_perf_malloc_free_by_size_class(false);
-}
-
-T_DECL(basic_perf_parallel_by_size_class_V1,
-	   "Malloc/Free by size class parallel on V1",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
-	   T_META_LTEPHASE(LTE_POSTINIT),
-	   T_META_ENVVAR("MallocNanoZone=V1"))
-{
-#if CONFIG_NANOZONE
-	basic_perf_malloc_free_by_size_class(false);
-#else // CONFIG_NANOZONE
-	T_SKIP("Nano allocator not configured");
-#endif // CONFIG_NANOZONE
 }
 
 T_DECL(basic_perf_parallel_by_size_class_V2,
@@ -505,24 +403,11 @@
 
 T_DECL(basic_perf_serial_by_size_class_offset,
 	   "Malloc/Free by size class with offset single-threaded",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
+	   T_META_TAG_PERF, T_META_TAG_XZONE, T_META_ALL_VALID_ARCHS(NO),
 	   T_META_LTEPHASE(LTE_POSTINIT),
 	   T_META_ENVVAR("MallocNanoZone=0"))
 {
 	basic_perf_malloc_free_by_size_class_offset(true);
-}
-
-T_DECL(basic_perf_serial_by_size_class_offset_V1,
-	   	"Malloc/Free by size class with offset single-threaded on V1",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
-	   T_META_LTEPHASE(LTE_POSTINIT),
-	   T_META_ENVVAR("MallocNanoZone=V1"))
-{
-#if CONFIG_NANOZONE
-	basic_perf_malloc_free_by_size_class_offset(true);
-#else // CONFIG_NANOZONE
-	T_SKIP("Nano allocator not configured");
-#endif // CONFIG_NANOZONE
 }
 
 T_DECL(basic_perf_serial_by_size_class_offset_V2,
@@ -540,24 +425,11 @@
 
 T_DECL(basic_perf_parallel_by_size_class_offset,
 	   "Malloc/Free by size class with offset parallel",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
-	   T_META_LTEPHASE(LTE_POSTINIT),
-	   T_META_ENVVAR("MallocNanoZone"))
+	   T_META_TAG_PERF, T_META_TAG_XZONE, T_META_ALL_VALID_ARCHS(NO),
+	   T_META_LTEPHASE(LTE_POSTINIT),
+	   T_META_ENVVAR("MallocNanoZone=0"))
 {
 	basic_perf_malloc_free_by_size_class_offset(false);
-}
-
-T_DECL(basic_perf_parallel_by_size_class_offset_V1,
-	   	"Malloc/Free by size class with offset parallel on V1",
-	   T_META_TAG_PERF, T_META_ALL_VALID_ARCHS(NO),
-	   T_META_LTEPHASE(LTE_POSTINIT),
-	   T_META_ENVVAR("MallocNanoZone=V1"))
-{
-#if CONFIG_NANOZONE
-	basic_perf_malloc_free_by_size_class_offset(false);
-#else // CONFIG_NANOZONE
-	T_SKIP("Nano allocator not configured");
-#endif // CONFIG_NANOZONE
 }
 
 T_DECL(basic_perf_parallel_by_size_class_offset_V2,