Recommit r80858 again (which has been backed out in r80871).

This time I did a self-hosted bootstrap on Linux x86-64,
with no problems. Let's see how darwin 64-bit self-hosting
goes. At the first sign of failure I'll back this out.

Maybe the valgrind bots give me a hint of what may be wrong
(it at all).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98957 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/IPO/PruneEH.cpp b/lib/Transforms/IPO/PruneEH.cpp
index 3ae771c..161246b 100644
--- a/lib/Transforms/IPO/PruneEH.cpp
+++ b/lib/Transforms/IPO/PruneEH.cpp
@@ -168,7 +168,7 @@
   for (Function::iterator BB = F->begin(), E = F->end(); BB != E; ++BB) {
     if (InvokeInst *II = dyn_cast<InvokeInst>(BB->getTerminator()))
       if (II->doesNotThrow()) {
-        SmallVector<Value*, 8> Args(II->op_begin()+3, II->op_end());
+        SmallVector<Value*, 8> Args(II->op_begin(), II->op_end() - 3);
         // Insert a call instruction before the invoke.
         CallInst *Call = CallInst::Create(II->getCalledValue(),
                                           Args.begin(), Args.end(), "", II);