Apply the patch requested in PR3846.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67364 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/PrologEpilogInserter.cpp b/lib/CodeGen/PrologEpilogInserter.cpp
index ab63f4933ffdaba07cfa7466e0e7fdcc6198031c..322c28bd4ddbfc0dc20a3f918d5e4374440eece6 100644 (file)
--- a/lib/CodeGen/PrologEpilogInserter.cpp
+++ b/lib/CodeGen/PrologEpilogInserter.cpp
@@ -574,7 +574,7 @@ void PEI::replaceFrameIndices(MachineFunction &Fn) {
           break;
         }
 
-      if (DoIncr) ++I;
+      if (DoIncr && I != BB->end()) ++I;
 
       // Update register states.
       if (RS && MI) RS->forward(MI);