X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FAnalysis.cpp;h=6ac5de2c61747da604d9151e9a1e634e32d4223a;hb=3bfc4d8e13edd83534b733f0f1de5b1d5f6bf828;hp=1600c67a7c62550c48363b688a504e827cd53590;hpb=9d6852cf98dd1e6a939b3469ea49ff7cbc15ad73;p=oota-llvm.git

diff --git a/lib/CodeGen/Analysis.cpp b/lib/CodeGen/Analysis.cpp
index 1600c67a7c6..6ac5de2c617 100644
--- a/lib/CodeGen/Analysis.cpp
+++ b/lib/CodeGen/Analysis.cpp
@@ -498,8 +498,7 @@ bool llvm::isInTailCallPosition(ImmutableCallSite CS,
   // chain interposes between I and the return.
   if (I->mayHaveSideEffects() || I->mayReadFromMemory() ||
       !isSafeToSpeculativelyExecute(I))
-    for (BasicBlock::const_iterator BBI = prior(prior(ExitBB->end())); ;
-         --BBI) {
+    for (BasicBlock::const_iterator BBI = std::prev(ExitBB->end(), 2);; --BBI) {
       if (&*BBI == I)
         break;
       // Debug info intrinsics do not get in the way of tail call optimization.