From: Chris Lattner <sabre@nondot.org>
Date: Fri, 28 Nov 2008 22:50:08 +0000 (+0000)
Subject: don't revisit instructions off the beginning of the block.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=5425f22fa3f8cbbcbc1a76fc7df2fa251cdc132d;p=oota-llvm.git

don't revisit instructions off the beginning of the block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60221 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/DeadStoreElimination.cpp b/lib/Transforms/Scalar/DeadStoreElimination.cpp
index b48bbeae66b..e6a05b7e90b 100644
--- a/lib/Transforms/Scalar/DeadStoreElimination.cpp
+++ b/lib/Transforms/Scalar/DeadStoreElimination.cpp
@@ -132,7 +132,8 @@ bool DSE::runOnBasicBlock(BasicBlock &BB) {
       
       // If we deleted a store, reinvestigate this instruction.
       if (deletedStore) {
-        --BBI;
+        if (!isa<TerminatorInst>(BB.begin()))
+          --BBI;
         continue;
       }
     }
@@ -160,7 +161,8 @@ bool DSE::runOnBasicBlock(BasicBlock &BB) {
              DT.dominates(dep, L))) {
           
           DeleteDeadInstruction(S);
-          --BBI;
+          if (!isa<TerminatorInst>(BB.begin()))
+            --BBI;
           NumFastStores++;
           MadeChange = true;
         } else