Add support for unreachable

llvm-svn: 17056

2 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/ExecutionEngine/Interpreter/Execution.cpp b/llvm/lib/ExecutionEngine/Interpreter/Execution.cpp
index 589ac7f99dc..8616656360f 100644
--- a/llvm/lib/ExecutionEngine/Interpreter/Execution.cpp
+++ b/llvm/lib/ExecutionEngine/Interpreter/Execution.cpp
@@ -616,6 +616,11 @@ void Interpreter::visitUnwindInst(UnwindInst &I) {
   SwitchToNewBasicBlock(cast<InvokeInst>(Inst)->getUnwindDest(), InvokingSF);
 }
 
+void Interpreter::visitUnreachableInst(UnreachableInst &I) {
+  std::cerr << "ERROR: Program executed an 'unreachable' instruction!\n";
+  abort();
+}
+
 void Interpreter::visitBranchInst(BranchInst &I) {
   ExecutionContext &SF = ECStack.back();
   BasicBlock *Dest;
diff --git a/llvm/lib/ExecutionEngine/Interpreter/Interpreter.h b/llvm/lib/ExecutionEngine/Interpreter/Interpreter.h
index d6e590d7357..e146135cf5f 100644
--- a/llvm/lib/ExecutionEngine/Interpreter/Interpreter.h
+++ b/llvm/lib/ExecutionEngine/Interpreter/Interpreter.h
@@ -145,6 +145,7 @@ public:
   void visitCallInst(CallInst &I) { visitCallSite (CallSite (&I)); }
   void visitInvokeInst(InvokeInst &I) { visitCallSite (CallSite (&I)); }
   void visitUnwindInst(UnwindInst &I);
+  void visitUnreachableInst(UnreachableInst &I);
 
   void visitShl(ShiftInst &I);
   void visitShr(ShiftInst &I);