diff --git a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
index f9da036..90f635c 100644
--- a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
+++ b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
@@ -1504,6 +1504,9 @@
     return;
   }
   case ARM::CONSTPOOL_ENTRY: {
+    if (Subtarget->genExecuteOnly())
+      llvm_unreachable("execute-only should not generate constant pools");
+
     /// CONSTPOOL_ENTRY - This instruction represents a floating constant pool
     /// in the function.  The first operand is the ID# for this instruction, the
     /// second is the index into the MachineConstantPool that this is, the third