From da005e7d20ddd623ac6174955473d4df27b1b7d4 Mon Sep 17 00:00:00 2001
From: Bill Wendling <isanbard@gmail.com>
Date: Mon, 15 Aug 2011 18:22:49 +0000
Subject: [PATCH] The landingpad instruction isn't loop-invariant.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137628 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Analysis/LoopInfo.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/Analysis/LoopInfo.cpp b/lib/Analysis/LoopInfo.cpp
index 9a7c50d7fa4..36fd598d13c 100644
--- a/lib/Analysis/LoopInfo.cpp
+++ b/lib/Analysis/LoopInfo.cpp
@@ -99,6 +99,9 @@ bool Loop::makeLoopInvariant(Instruction *I, bool &Changed,
     return false;
   if (I->mayReadFromMemory())
     return false;
+  // The landingpad instruction is immobile.
+  if (isa<LandingPadInst>(I))
+    return false;
   // Determine the insertion point, unless one was given.
   if (!InsertPt) {
     BasicBlock *Preheader = getLoopPreheader();