diff --git a/compiler-rt/test/lit.common.cfg.py b/compiler-rt/test/lit.common.cfg.py
--- a/compiler-rt/test/lit.common.cfg.py
+++ b/compiler-rt/test/lit.common.cfg.py
@@ -325,6 +325,69 @@
     ))
   )
 
+  # Create features comparing the target OS against those listed below.
+  # Versions listed here can in the following forms:
+  #
+  # 1) (<major>, <minor>)
+  # 2) (<major>, <minor>, <patch>)
+  #
+  # NOTE: For form 1) `<patch>` is inferred to be `0`.
+  os_versions_to_compare_with = {
+    'osx': [
+      (10,15)
+    ],
+    'ios': [
+      (13,0)
+    ],
+    'watchos': [
+      (6,0)
+    ],
+    'tvos': [
+      (13,0)
+    ]
+  }
+  canonical_platform_name = config.apple_platform
+  if canonical_platform_name.endswith('sim'):
+    canonical_platform_name = canonical_platform_name[:-3]
+  if canonical_platform_name in os_versions_to_compare_with:
+    for version_tuple in os_versions_to_compare_with[canonical_platform_name]:
+      version_triplet = version_tuple
+      if len(version_triplet) == 2:
+        version_triplet = (version_tuple[0], version_tuple[1], 0)
+      assert len(version_triplet) == 3
+      # >= feature
+      if apple_target_os_tuple >= version_triplet:
+        geq_feature = 'apple_{platform}_geq_{major}_{minor}_{patch}'.format(
+            platform=canonical_platform_name,
+            major=version_triplet[0],
+            minor=version_triplet[1],
+            patch=version_triplet[2])
+        config.available_features.add(geq_feature)
+      # > feature
+      if apple_target_os_tuple > version_triplet:
+        gt_feature = 'apple_{platform}_gt_{major}_{minor}_{patch}'.format(
+            platform=canonical_platform_name,
+            major=version_triplet[0],
+            minor=version_triplet[1],
+            patch=version_triplet[2])
+        config.available_features.add(gt_feature)
+      # <= feature
+      if apple_target_os_tuple <= version_triplet:
+        geq_feature = 'apple_{platform}_leq_{major}_{minor}_{patch}'.format(
+            platform=canonical_platform_name,
+            major=version_triplet[0],
+            minor=version_triplet[1],
+            patch=version_triplet[2])
+        config.available_features.add(geq_feature)
+      # < feature
+      if apple_target_os_tuple < version_triplet:
+        geq_feature = 'apple_{platform}_lt_{major}_{minor}_{patch}'.format(
+            platform=canonical_platform_name,
+            major=version_triplet[0],
+            minor=version_triplet[1],
+            patch=version_triplet[2])
+        config.available_features.add(geq_feature)
+
   # Detect x86_64h
   try:
     output = subprocess.check_output(["sysctl", "hw.cpusubtype"])