diff --git a/llvm/lib/CodeGen/TargetInstrInfo.cpp b/llvm/lib/CodeGen/TargetInstrInfo.cpp
--- a/llvm/lib/CodeGen/TargetInstrInfo.cpp
+++ b/llvm/lib/CodeGen/TargetInstrInfo.cpp
@@ -1598,6 +1598,15 @@
     case TargetOpcode::LIFETIME_START:
     case TargetOpcode::LIFETIME_END:
       return outliner::InstrType::Invisible;
+    case TargetOpcode::PATCHABLE_FUNCTION_ENTER:
+    case TargetOpcode::PATCHABLE_RET:
+    case TargetOpcode::PATCHABLE_FUNCTION_EXIT:
+    case TargetOpcode::PATCHABLE_TAIL_CALL:
+    case TargetOpcode::PATCHABLE_EVENT_CALL:
+    case TargetOpcode::PATCHABLE_TYPED_EVENT_CALL:
+      // XRay pseudo-instructions can't safely be outlined, and
+      // shouldn't be either way due to their intended purpose.
+      return outliner::InstrType::Illegal;
     default:
       break;
   }
diff --git a/llvm/test/CodeGen/AArch64/machine-outliner-patchable-exit.mir b/llvm/test/CodeGen/AArch64/machine-outliner-patchable-exit.mir
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/AArch64/machine-outliner-patchable-exit.mir
@@ -0,0 +1,30 @@
+# RUN: llc -mtriple aarch64 -run-pass=machine-outliner -verify-machineinstrs %s -o - | FileCheck %s
+# CHECK-NOT: OUTLINED_FUNCTION
+
+...
+---
+name:            foo1
+tracksRegLiveness: true
+machineFunctionInfo:
+  hasRedZone:      false
+body:             |
+  bb.0:
+    liveins: $x0
+    $x0 = ADDXri $x0, 0, 0
+    PATCHABLE_FUNCTION_EXIT
+    RET_ReallyLR implicit $x0
+
+...
+---
+name:            foo2
+tracksRegLiveness: true
+machineFunctionInfo:
+  hasRedZone:      false
+body:             |
+  bb.0:
+    liveins: $x0
+    $x0 = ADDXri $x0, 0, 0
+    PATCHABLE_FUNCTION_EXIT
+    RET_ReallyLR implicit $x0
+
+...