From c6389c10cc6634bec069fbd84f8213e7aaa8edd9 Mon Sep 17 00:00:00 2001
From: Reid Spencer <rspencer@reidspencer.com>
Date: Thu, 9 Nov 2006 01:47:04 +0000
Subject: [PATCH] Don't run bugpoint if we can't find a misoptimization.

llvm-svn: 31582
---
 llvm/utils/findmisopt | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/llvm/utils/findmisopt b/llvm/utils/findmisopt
index a6033ca88fa9..dc5648494573 100755
--- a/llvm/utils/findmisopt
+++ b/llvm/utils/findmisopt
@@ -122,9 +122,13 @@ while [ ! -z "$switches" ] ; do
   echo "Next Loop"
 done
 
-echo "Smallest Optimization list= $final"
+if [ "$final" == " $all_switches" ] ; then
+  echo "findmisopt: Can't find a set of optimizations that make it fail"
+  exit 0
+fi
+echo "Smallest Optimization list=$final"
 bpcmd="bugpoint -run-llc --output "$out" --input /dev/null $bcfile $final --args $args"
 
 echo "Running: $bpcmd"
 $bpcmd
-echo "Finished."
+echo "findmisopt finished."