If the pass changes _anything_ it must return true

llvm-svn: 7344
diff --git a/llvm/lib/Target/X86/InstSelectSimple.cpp b/llvm/lib/Target/X86/InstSelectSimple.cpp
index 1562c84..df911f6 100644
--- a/llvm/lib/Target/X86/InstSelectSimple.cpp
+++ b/llvm/lib/Target/X86/InstSelectSimple.cpp
@@ -85,7 +85,8 @@
       RegMap.clear();
       MBBMap.clear();
       F = 0;
-      return false;  // We never modify the LLVM itself.
+      // We always build a machine code representation for the function
+      return true;
     }
 
     virtual const char *getPassName() const {