From: Evan Cheng <evan.cheng@apple.com>
Date: Fri, 8 May 2009 09:35:53 +0000 (+0000)
Subject: Reverse branch condition only when there is a conditional branch.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=4b7f7a6e1f3eacf116472c1b0d0eaddf01fa4495;p=oota-llvm.git

Reverse branch condition only when there is a conditional branch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71214 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CodePlacementOpt.cpp b/lib/CodeGen/CodePlacementOpt.cpp
index f6a8421c434..4276651d3bc 100644
--- a/lib/CodeGen/CodePlacementOpt.cpp
+++ b/lib/CodeGen/CodePlacementOpt.cpp
@@ -211,7 +211,8 @@ bool CodePlacementOpt::OptimizeIntraLoopEdges() {
         } else if (!FBB && SSMBB == TBB && Cond.empty()) {
           TBB = 0;
           --Cost;
-        } else if (!TII->ReverseBranchCondition(Cond)) {
+        } else if (!Cond.empty() && !TII->ReverseBranchCondition(Cond)) {
+          assert(SSMBB == TBB);
           TBB = FBB;
           FBB = 0;
           --Cost;