diff --git a/tools/llvm-as/llvm-as.cpp b/tools/llvm-as/llvm-as.cpp
index 72e3297..79ece8f 100644
--- a/tools/llvm-as/llvm-as.cpp
+++ b/tools/llvm-as/llvm-as.cpp
@@ -21,6 +21,7 @@
 #include "llvm/Bitcode/ReaderWriter.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/Streams.h"
 #include "llvm/Support/SystemUtils.h"
 #include "llvm/Support/raw_ostream.h"
@@ -51,9 +52,11 @@
               cl::desc("Do not run verifier on input LLVM (dangerous!)"));
 
 int main(int argc, char **argv) {
-  llvm_shutdown_obj X;  // Call llvm_shutdown() on exit.
-  cl::ParseCommandLineOptions(argc, argv, "llvm .ll -> .bc assembler\n");
+  // Print a stack trace if we signal out.
   sys::PrintStackTraceOnErrorSignal();
+  PrettyStackTraceProgram X(argc, argv);
+  llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
+  cl::ParseCommandLineOptions(argc, argv, "llvm .ll -> .bc assembler\n");
 
   int exitCode = 0;
   std::ostream *Out = 0;